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SE540391C2 - Method and system for facilitating electric drive of a hybrid vehicle - Google Patents

Method and system for facilitating electric drive of a hybrid vehicle

Info

Publication number
SE540391C2
SE540391C2 SE1550610A SE1550610A SE540391C2 SE 540391 C2 SE540391 C2 SE 540391C2 SE 1550610 A SE1550610 A SE 1550610A SE 1550610 A SE1550610 A SE 1550610A SE 540391 C2 SE540391 C2 SE 540391C2
Authority
SE
Sweden
Prior art keywords
vehicle
air
suspension system
air suspension
compressed air
Prior art date
Application number
SE1550610A
Other languages
Swedish (sv)
Other versions
SE1550610A1 (en
Inventor
Jeddi Tehrani Hossein
Nordqvist Jesper
Original Assignee
Scania Cv Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Scania Cv Ab filed Critical Scania Cv Ab
Priority to SE1550610A priority Critical patent/SE540391C2/en
Priority to DE102016005109.4A priority patent/DE102016005109B4/en
Priority to BR102016009442A priority patent/BR102016009442A2/en
Publication of SE1550610A1 publication Critical patent/SE1550610A1/en
Publication of SE540391C2 publication Critical patent/SE540391C2/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
    • B60G17/052—Pneumatic spring characteristics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • B60G17/0152—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the action on a particular type of suspension unit
    • B60G17/0155—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the action on a particular type of suspension unit pneumatic unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • B60G17/0195—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the regulation being combined with other vehicle control systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
    • B60G17/052—Pneumatic spring characteristics
    • B60G17/0523—Regulating distributors or valves for pneumatic springs
    • B60G17/0525—Height adjusting or levelling valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K25/00—Auxiliary drives
    • B60K25/02—Auxiliary drives directly from an engine shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/38—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
    • B60K6/387—Actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/22—Conjoint control of vehicle sub-units of different type or different function including control of suspension systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/30—Conjoint control of vehicle sub-units of different type or different function including control of auxiliary equipment, e.g. air-conditioning compressors or oil pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
    • B60W20/15—Control strategies specially adapted for achieving a particular effect
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/15—Fluid spring
    • B60G2202/152—Pneumatic spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2300/00—Indexing codes relating to the type of vehicle
    • B60G2300/50—Electric vehicles; Hybrid vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/30—Propulsion unit conditions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/50—Pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/50—Pressure
    • B60G2400/51—Pressure in suspension unit
    • B60G2400/512—Pressure in suspension unit in spring
    • B60G2400/5122—Fluid spring
    • B60G2400/51222—Pneumatic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/20—Spring action or springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/20—Spring action or springs
    • B60G2500/205—Air-compressor operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • B60K2006/4825—Electric machine connected or connectable to gearbox input shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
    • B60T13/26—Compressed-air systems
    • B60T13/268—Compressed-air systems using accumulators or reservoirs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T2260/00—Interaction of vehicle brake system with other systems
    • B60T2260/06—Active Suspension System
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Automation & Control Theory (AREA)
  • Vehicle Body Suspensions (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)

Abstract

The present invention relates to a method for facilitating electric drive of a hybrid vehicle. The hybrid vehicle comprises an electric motor arrangement for driving the vehicle and a combustion engine for driving the vehicle and configured to operate a compressor for providing compressed air for an air processing system of said vehicle. The air processing system supplies compressed air to the air suspension system of said vehicle. The method comprises the step of controlling (S1) the operation of said air suspension system in order to save compressed air of the amount of compressed air available during drive of the vehicle solely by means of the electric motor arrangement, the combustion engine and thereby said compressor not being in operation.The present invention also relates to a system for facilitating electric drive of a hybrid vehicle. The present invention also relates to a vehicle. The present invention also relates to a computer program and a computer program product.

Description

METHOD AND SYSTEM FOR FACILITATING ELECTRIC DRIVE OF A HYBRID VEHICLE TECHNICAL FIELD The invention relates to a method for facilitating electric drive of a hybrid vehicle according to the preamble of claim 1. The invention also relates to a system for facilitating electric drive of a hybrid vehicle. The invention also relates to a vehicle. The invention in addition relates to a computer program and a computer program product.
BACKGROUND ART In order to reduce fuel consumption hybrid vehicles are used. A hybrid vehicle comprises an electric motor arrangement for driving the vehicle and a combustion engine for driving the vehicle. Such hybrid vehicles may also be provided with an air processing system for supplying compressed air to an air suspension system for air suspension and also to other systems including the brake system of the vehicle. The combustion engine is hereby configured to operate a compressor for providing compressed air for the air processing system. It is desirable to drive the vehicle solely by means of the electric motor as much as possible in order to facilitate energy efficient drive and also for silent drive of the vehicle. When the vehicle is driven solely by means of the electric motor the combustion engine and thereby said compressor are not in operation, whereby no compressed air is supplied to the air processing system. This limits the possibility of driving the vehicle solely by means of the electric motor, as a certain level of compressed air is needed for e.g. the brake system OBJECTS OF THE INVENTION An object of the present invention is to provide a method for facilitating electric drive of a hybrid vehicle which further reduces fuel consumption.
Another object of the present invention is to provide a system for facilitating electric drive of a hybrid vehicle which further reduces fuel consumption.
SUMMARY OF THE INVENTION These and other objects, apparent from the following description, are achieved by a method, a system, a vehicle, a computer program and a computer program product as set out in the appended independent claims. Preferred embodiments of the method and the system are defined in appended dependent claims.
Specifically an object of the invention is achieved by a method for facilitating electric drive of a hybrid vehicle. The hybrid vehicle comprises an electric motor arrangement for driving the vehicle and a combustion engine for driving the vehicle and configured to operate a compressor for providing compressed air for an air processing system of said vehicle. The air processing system supplies compressed air to the air suspension system of said vehicle. The method comprises the step of controlling the operation of said air suspension system in order to save compressed air of the amount of compressed air available during drive of the vehicle solely by means of the electric motor arrangement, the combustion engine and thereby said compressor not being in operation. By thus controlling the operation of said air suspension system in order to save compressed air the vehicle may be driven solely by means of the electric motor arrangement for a longer time, thus reducing fuel consumption and facilitating silent drive to a larger extent. Furthermore the method comprises the step of controlling the operation of said air suspension system and comprises the step of increasing an interval of allowable level changes controlled by the air suspension system and thereby impairing the damping efficiency of said air suspension system of the vehicle. Hereby drive solely by means of the electric motor arrangement may be increased and still maintaining a certain damping function by means of the air suspension system.
Specifically an object of the invention is achieved by a system for facilitating electric drive of a hybrid vehicle adapted to perform the methods as set out above.
The system according to the invention has the advantages according to the corresponding method claims.
BRIEF DESCRIPTION OF THE DRAWINGS For a better understanding of the present invention reference is made to the following detailed description when read in conjunction with the accompanying drawings, wherein like reference characters refer to like parts throughout the several views, and in which: Fig. 1 a schematically illustrates a side view of a hybrid vehicle according to the present invention; Fig. 1b schematically illustrates a detail of the hybrid vehicle in fig. 1a; Fig. 2 schematically illustrates a system for facilitating electric drive of a hybrid vehicle according to an embodiment of the present invention; Fig. 3 schematically illustrates a system for facilitating electric drive of a hybrid vehicle according to an embodiment of the present invention; Fig. 4 schematically illustrates a block diagram of a method for facilitating electric drive of a hybrid vehicle according to an embodiment of the present invention; and Fig. 5 schematically illustrates a computer according to an embodiment of the present invention.
DETAILED DESCRIPTION Hereinafter the term “link” refers to a communication link which may be a physical connector, such as an optoelectronic communication wire, or a nonphysical connector such as a wireless connection, for example a radio or microwave link.
Fig. 1a schematically illustrates a side view of a hybrid vehicle 1 according to the present invention. The exemplified vehicle 1 is a heavy vehicle in the shape of a truck. The vehicle according to the present invention could be any hybrid vehicle such as a bus or a car. The vehicle comprises a system for facilitating electric drive of the hybrid vehicle.
Fig. 1b schematically illustrates a detail A of the hybrid vehicle in fig. 1a. The detail A shows the front lower part of the hybrid vehicle 1 in order to illustrate the allowable level changes controlled by the air suspension system of the vehicle. The allowable level changes is controllable between a first allowable level change L1 where the damping efficiency is relatively high and a second allowable level change L2 being higher, i.e. allowing a greater level change, than the first allowable level change L1, and thus providing a relatively lower damping efficiency, i.e. an impaired damping efficiency compared to the first allowable level change L1. The first allowable level change L1 may thus consume more compressed air than the second allowable level change L2 for a given damping situation.
Fig. 2 schematically illustrates a system I for facilitating electric drive of a hybrid vehicle according to an embodiment of the present invention.
The system I comprises a powertrain of the hybrid vehicle. The powertrain comprises an electric motor arrangement 10 for driving the vehicle and a combustion engine 20 for driving the vehicle. The electric motor arrangement 10 comprises at least one electric motor and a generator. The powertrain further comprises power electronics 12 for the electric motor arrangement. The power electronics is configured to provide electric energy to the electric motor arrangement 10. The powertrain also comprises an energy source 14 which according to an embodiment comprises a battery unit. The energy source 14 is configured to supply energy to the electric motor arrangement 10 via the power electronics.
The powertrain comprises a transmission unit 30 connected to a drive axle X1 of the hybrid vehicle. The drive axle X1 is connected to ground engaging members which according to an embodiment are constituted by drive wheels.
The hybrid vehicle is driveable by means of the electric motor arrangement 10 and/or the combustion engine 20.
The electric motor arrangement 10 is connectable to the transmission unit 30 via coupling means 10a.
The combustion engine is connectable to the transmission unit 30 via coupling means 20a.
The system comprises an air processing system 40. The combustion engine 20 is configured to operate a compressor 50 for providing compressed air for the air processing system. The air processing system 40 is configured to supply compressed air to an air suspension system 42 for air suspension of the vehicle. The air processing system 40 is configured to supply compressed air to a brake system 44 of the vehicle.
The air suspension system 42 comprises according to an embodiment a set of bellows units arranged in connection to the respective wheels/wheel axles of the vehicle. The air suspension system 42 further comprises an air valve configuration connected to the set of bellows units and adapted to regulating the air pressure in the respective bellows units.
The respective bellows units are situated between the vehicle frame and the respective axles, making it possible for the vehicle body of the vehicle to be raised and lowered by regulation of air in bellows units.
The system comprises an electronic control unit 100. The electronic control unit 100 is arranged to control the operation of said air suspension system 42 in order to save compressed air of the amount of compressed air available during drive of the vehicle solely by means of the electric motor arrangement 10 when the combustion engine 20 and thereby said compressor 50 are not in operation.
According to an embodiment the electronic control unit 100 is arranged to control the operation of said air suspension system 42 by turning off the air suspension system in order to save compressed air of the amount of compressed air available during drive of the vehicle solely by means of the electric motor arrangement 10 when the combustion engine 20 and thereby said compressor 50 are not in operation. Hereby no air is consumed by means of the air suspension system thus facilitating longer drive solely by means of the electric motor arrangement.
According to an embodiment the electronic control unit 100 is arranged to control the operation of said air suspension system 42 by increasing an interval of allowable level changes controlled by the air suspension system and thereby impairing the damping efficiency of said air suspension system of the vehicle in order to save compressed air of the amount of compressed air available during drive of the vehicle solely by means of the electric motor arrangement 10 when the combustion engine 20 and thereby said compressor 50 are not in operation. Hereby drive solely by means of the electric motor arrangement may be increased and still maintaining a certain damping function by means of the air suspension system.
The electronic control unit 100 is operably connected to the air processing system 40 and receives information about amount of air available in the air processing system 40 from the air processing system, according to an embodiment by means of any suitable sensor means.
The electronic control unit 100 is operably connected to the air suspension system 42 and receives information about air pressure in the air suspension system 42 from the air suspension system 42, according to an embodiment by means of any suitable sensor means.
The electronic control unit 100 is operably connected to the combustion engine 20. The electronic control unit is arranged to deactivate operation of the combustion engine such that the vehicle is driven solely by means of the electric motor arrangement 10. The deactivation of the combustion engine 20 for drive solely by means of the electric motor arrangement is according to an embodiment automatic. The deactivation of the combustion engine 20 for drive solely by means of the electric motor arrangement is according to an embodiment manual, i.e. the operator deactivates the combustion engine for such drive via an actuator which according to an embodiment is connected to the electronic control unit 100.
The electronic control unit 100 is operably connected to the brake system 44 and receives information about air pressure in the brake system 44.
The electronic control unit is arranged to activate operation of the combustion engine such that the vehicle is driven solely by means of the combustion engine or with the combustion engine 20 in combination with the electric motor arrangement 10. The electronic control unit is arranged to activate operation of the combustion engine based on information about amount of compressed air available and/or based on air pressure in the air suspension system 42 and the brake system 44.
The electronic control unit 100 is operably connected to the coupling means 10a for activating and deactivating the electric motor arrangement.
The electronic control unit 100 is operably connected to the coupling means 20a for activating and deactivating the combustion engine. The coupling means 20a is according to an embodiment comprised in means for activating/deactivating operation of the combustion engine for driving the vehicle and operating the compressor 50.
Fig. 3 schematically illustrates a system II for facilitating electric drive of a hybrid vehicle according to an embodiment of the present invention.
The hybrid vehicle comprises an electric motor arrangement 10 for driving the vehicle and a combustion engine 20 for driving the vehicle and configured to operate a compressor 50 for providing compressed air for an air processing system 40 of said vehicle. The air processing system 40 is arranged to supply compressed air to the air suspension system 42 of said vehicle and to the brake system 44 of said vehicle.
The system II comprises means 200 for controlling the operation of said air suspension system 42. The means 200 for controlling the operation of said air suspension system 42 is comprised in or constitutes an electronic control unit 200. The electronic control unit 200 is arranged to control the operation of said air suspension system 42 in order to save compressed air of the amount of compressed air available during drive of the vehicle solely by means of the electric motor arrangement, the combustion engine and thereby said compressor not being in operation.
The means 200 for controlling the operation of said air suspension system 42, i.e. the electronic control unit 200, comprises means 202 for turning off the air suspension system. The means 202 for turning off the air suspension system 42 may comprise any suitable means configured to turn off the air suspension system 42. The means 202 for turning off the air suspension system 42 comprises means, such as pneumatic actuators, electric actuators or the like, for turning off valve units such that air is not allowed into or out of bellows.
The means 200 for controlling the operation of said air suspension system 42, i.e. the electronic control unit 200, comprises means 204 for increasing an interval of allowable level changes controlled by the air suspension system 42 and thereby impairing the damping efficiency of said air suspension system 42 of the vehicle.
The system II comprises means 210 for determining the amount of compressed air available. The means 210 for determining the amount of compressed air available comprises any suitable sensor unit for sensing the amount of compressed air available. The means 210 for determining the amount of compressed air available is according to an embodiment comprised in the air processing system 40. The means 210 is according to an embodiment arranged to determine the air pressure of the air processing system 40.
The system II comprises means 220 for determining the air pressure in the air suspension system 42. The means 220 for determining the air pressure in the air suspension system may comprise any suitable pressure sensor means for sensing the air pressure in the air suspension system 42, e.g. the air pressure in bellows units of the air suspension system. The means 220 for determining the air pressure in the air suspension system is according to an embodiment comprised in the air suspension system 42.
The system II comprises means 230 for determining the air pressure in the air brake system 44. The means 230 for determining the air pressure in the brake system may comprise any suitable pressure sensor means for sensing the air pressure in the brake system 44. The means 230 for determining the air pressure in the brake system 44 is according to an embodiment comprised in the brake system 44.
The system comprises means 240 for determining operation status of the combustion engine 20 so as to determine whether the combustion engine and thereby said compressor are not being in operation. Hereby is determined whether drive of the vehicle is solely by means of the electric motor arrangement. The means 240 for determining operation status is according to an embodiment arranged to determine operation status of the compressor 50. The means 240 may comprise any suitable sensor unit for sensing status of operation of the combustion engine and/or the compressor 50.
The system comprises means 250 for activating electric drive by means of said electric motor arrangement 10, said means 250 being configured to deactivating drive by means of the combustion engine 20.
The means 250 for activating electric drive comprises means 252 for automatically activating electric drive. The means 252 for automatically activating electric drive is configured to activate electric drive due to certain criteria such as a legal demand to drive the vehicle in silent mode, this being recognized by the vehicle by means of e.g. a GPS and map data of the route of the vehicle.
The means 250 for activating electric drive comprises means 254 for manually activating electric drive. Said means 254 for manually activating electric drive may comprise any suitable actuator available for the operator of the vehicle to activate electric drive.
The electronic control unit 200 is operably connected to the means 210 for determining the amount of compressed air available via a link 210a. The electronic control unit 200 is via the link 210a arranged to receive a signal from said means 210 representing data for amount of compressed air available. The data for amount of compressed air available during drive of the vehicle solely by means of the electric motor arrangement, where the combustion engine and thereby said compressor is not being in operation is hereby received.
The electronic control unit 200 is operably connected to the means 220 for determining the air pressure in the air suspension system 42 via a link 220a. The electronic control unit 200 is via the link 220a arranged to receive a signal from said means 220 representing data for air pressure in the air suspension system 42.
The electronic control unit 200 is operably connected to the means 230 for determining the air pressure in the brake system 44 via a link 230a. The electronic control unit 200 is via the link 230a arranged to receive a signal from said means 230 representing data for air pressure in the brake system 44.
The electronic control unit 200 is operably connected to the means 240 for determining operation status of the combustion engine 20 so as to determine whether the combustion engine and thereby said compressor are not being in operation via a link 240a. The electronic control unit 200 is via the link 240a arranged to receive a signal from said means 240 representing data for operation status of the combustion engine/compressor.
The electronic control unit 200 is operably connected to the means 250 for activating electric drive by means of said electric motor arrangement 10, said means 250 being configured to deactivating drive by means of the combustion engine 20 via a link 250a. The electronic control unit 200 is via the link 250a arranged to receive a signal from said means 250 representing data for activating electric drive and deactivating operation of the combustion engine and compressor.
The electronic control unit 200 is operably connected to the means 252 for automatically activating electric drive via a link 252a. The electronic control unit 200 is via the link 252a arranged to receive a signal from said means 252 representing data for automatically activating electric drive and deactivating operation of the combustion engine and compressor.
The electronic control unit 200 is operably connected to the means 254 for manually activating electric drive via a link 254a. The electronic control unit 200 is via the link 254a arranged to receive a signal from said means 254 representing data for manually activating electric drive and deactivating operation of the combustion engine and compressor.
The electronic control unit 200 is operably connected to the air suspension system 42 via a link 200a. The electronic control unit 200 is via the link 200a arranged to send a signal to the air suspension system representing data for controlling the operation of said air suspension system in order to save compressed air of the amount of compressed air available during drive of the vehicle solely by means of the electric motor arrangement, the combustion engine and thereby said compressor not being in operation.
The means 202 for turning off the air suspension system is operably connected to the air suspension system 42 via a link 202a. The means 202 is via the link 202a arranged to send a signal to the air suspension system representing data for turning off the air suspension system in order to save compressed air of the amount of compressed air available during drive of the vehicle solely by means of the electric motor arrangement.
The means 204 for increasing an interval of allowable level changes controlled by the air suspension system 42 and thereby impairing the damping efficiency of said air suspension system 42 of the vehicle is operably connected to the air suspension system 42 via a link 204a. The means 204 is via the link 204a arranged to send a signal to the air suspension system representing data for increasing an interval of allowable level changes controlled by the air suspension system 42 in order to save compressed air of the amount of compressed air available during drive of the vehicle solely by means of the electric motor arrangement.
The electronic control unit 200 is operably connected to the combustion engine 20 via a link 200b. The electronic control unit 200 is via the link 200b arranged to send a signal to the combustion engine 20 representing data for turning off the operation of the combustion engine 20.
The electronic control unit 200 is operably connected to the electric motor arrangement 10 via a link 200c. The electronic control unit 200 is via the link 200c arranged to send a signal to the electric motor arrangement 10 representing data for activating operation of the electric motor arrangement 10 for driving the vehicle solely by means of the electric motor arrangement.
Fig. 4 schematically illustrates a block diagram of a method for facilitating electric drive of a hybrid vehicle. The hybrid vehicle comprises an electric motor arrangement for driving the vehicle. The hybrid vehicle also comprises a combustion engine for driving the vehicle and configured to operate a compressor for providing compressed air for an air processing system of said vehicle. The air processing system is supplying compressed air to the air suspension system of said vehicle.
According to the embodiment the method for facilitating electric drive of a hybrid vehicle comprises a step S1. In this step the operation of said air suspension system is controlled in order to save compressed air of the amount of compressed air available during drive of the vehicle solely by means of the electric motor arrangement, the combustion engine and thereby said compressor not being in operation.
According to an embodiment of the method for facilitating electric drive of a hybrid vehicle the step S1 of controlling the operation of said air suspension system comprises the step of turning off the air suspension system.
According to an embodiment of the method for facilitating electric drive of a hybrid vehicle the step S1 of controlling the operation of said air suspension system comprises the step of increasing an interval of allowable level changes controlled by the air suspension system and thereby impairing the damping efficiency of said air suspension system of the vehicle.
With reference to figure 5, a diagram of an apparatus 500 is shown. The control units 100, 200 described with reference to fig. 2 and 3 may according to an embodiment comprise apparatus 500. Apparatus 500 comprises a non-volatile memory 520, a data processing device 510 and a read/write memory 550. Non-volatile memory 520 has a first memory portion 530 wherein a computer program, such as an operating system, is stored for controlling the function of apparatus 500. Further, apparatus 500 comprises a bus controller, a serial communication port, l/O-means, an A/D-converter, a time date entry and transmission unit, an event counter and an interrupt controller (not shown). Non-volatile memory 520 also has a second memory portion 540.
A computer program P is provided comprising routines for facilitating electric drive of a hybrid vehicle comprising an electric motor arrangement for driving the vehicle and a combustion engine for driving the vehicle and configured to operate a compressor for providing compressed air for an air processing system of said vehicle, said air processing system supplying compressed air to the air suspension system of said vehicle. The program P comprises routines for controlling the operation of said air suspension system in order to save compressed air of the amount of compressed air available during drive of the vehicle solely by means of the electric motor arrangement, the combustion engine and thereby said compressor not being in operation. The routines for controlling the operation of said air suspension system comprises routines for turning off the air suspension system. The routines for controlling the operation of said air suspension system comprises routines for increasing an interval of allowable level changes controlled by the air suspension system and thereby impairing the damping efficiency of said air suspension system of the vehicle. The computer program P may be stored in an executable manner or in a compressed condition in a separate memory 560 and/or in read/write memory 550.
When it is stated that data processing device 510 performs a certain function it should be understood that data processing device 510 performs a certain part of the program which is stored in separate memory 560, or a certain part of the program which is stored in read/write memory 550.
Data processing device 510 may communicate with a data communications port 599 by means of a data bus 515. Non-volatile memory 520 is adapted for communication with data processing device 510 via a data bus 512. Separate memory 560 is adapted for communication with data processing device 510 via a data bus 511. Read/write memory 550 is adapted for communication with data processing device 510 via a data bus 514. To the data communications port 599 e.g. the links connected to the control unit 100 may be connected.
When data is received on data port 599 it is temporarily stored in second memory portion 540. When the received input data has been temporarily stored, data processing device 510 is set up to perform execution of code in a manner described above. The signals received on data port 599 can be used by apparatus 500 for controlling the operation of said air suspension system in order to save compressed air of the amount of compressed air available during drive of the vehicle solely by means of the electric motor arrangement, the combustion engine and thereby said compressor not being in operation. The signals received on data port 599 used by apparatus 500 for controlling the operation of said air suspension system comprises turning off the air suspension system. The signals received on data port 599 used by apparatus 500 for controlling the operation of said air suspension system comprises increasing an interval of allowable level changes controlled by the air suspension system and thereby impairing the damping efficiency of said air suspension system of the vehicle.
Parts of the methods described herein can be performed by apparatus 500 by means of data processing device 510 running the program stored in separate memory 560 or read/write memory 550. When apparatus 500 runs the program, parts of the methods described herein are executed.
The foregoing description of the preferred embodiments of the present invention has been provided for the purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations will be apparent to practitioners skilled in the art. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, thereby enabling others skilled in the art to understand the invention for various embodiments and with the various modifications as are suited to the particular use contemplated.

Claims (5)

1. A method for facilitating electric drive of a hybrid vehicle (1) comprising an electric motor arrangement (10) for driving the vehicle and a combustion engine (20) for driving the vehicle and configured to operate a compressor (50) for providing compressed air for an air processing system (40) of said vehicle, said air processing system (40) supplying compressed air to the air suspension system (42) of said vehicle, characterized by the step of: - controlling the operation of said air suspension system (42) in order to save compressed air of the amount of compressed air available during drive of the vehicle solely by means of the electric motor arrangement (10), the combustion engine and thereby said compressor (50) not being in operation, wherein the step of controlling the operation of said air suspension system (42) comprises the step of increasing an interval (L1, L2) of allowable level changes controlled by the air suspension system (42) and thereby impairing the damping efficiency of said air suspension system (42) of the vehicle (1).
2. A system (I; II) for facilitating electric drive of a hybrid vehicle (1) comprising an electric motor arrangement (10) for driving the vehicle and a combustion engine (20) for driving the vehicle and configured to operate a compressor (50) for providing compressed air for an air processing system (40) of said vehicle, said air processing system (40) being arranged to supply compressed air to the air suspension system (42) of said vehicle, characterized by means (100; 200) for controlling the operation of said air suspension system (42) in order to save compressed air of the amount of compressed air available during drive of the vehicle solely by means of the electric motor arrangement (10), the combustion engine (20) and thereby said compressor (50) not being in operation, wherein the means (100; 200) for controlling the operation of said air suspension system (42) comprises means (204) for increasing an interval of allowable level changes (L1, L2) controlled by the air suspension system (42) and thereby impairing the damping efficiency of said air suspension system (42) of the vehicle.
3. A vehicle (1) comprising a system (I) according to claim 2.
4. A computer program (P) for facilitating electric drive of a hybrid vehicle, said computer program (P) comprising program code which, when run on an electronic control unit (100) or another computer (500) connected to the electronic control unit (100), causes the electronic control unit to perform the steps according to claim 1.
5. A computer program product comprising a digital storage medium storing the computer program according to claim 4.
SE1550610A 2015-05-12 2015-05-12 Method and system for facilitating electric drive of a hybrid vehicle SE540391C2 (en)

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SE1550610A SE540391C2 (en) 2015-05-12 2015-05-12 Method and system for facilitating electric drive of a hybrid vehicle
DE102016005109.4A DE102016005109B4 (en) 2015-05-12 2016-04-21 METHOD AND SYSTEM FOR SUPPORTING THE ELECTRIC DRIVE OF A HYBRID VEHICLE
BR102016009442A BR102016009442A2 (en) 2015-05-12 2016-04-28 method and system to facilitate electric drive of a hybrid vehicle

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Application Number Priority Date Filing Date Title
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DE102009035398A1 (en) 2009-07-30 2011-02-03 Wabco Gmbh Power train-arrangement for e.g. hybrid commercial vehicle, has power train-electric motor for driving compressed air-compressor and auxiliary power train, where force flux flows from motor into power train or compressed air-compressor
US8626367B2 (en) 2010-02-24 2014-01-07 GM Global Technology Operations LLC Method for operating a hybrid vehicle

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