Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02D—CONTROLLING COMBUSTION ENGINES
  • F02D33/00—Controlling delivery of fuel or combustion-air, not otherwise provided for
  • F02D33/003—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge
  • F02D33/006—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge depending on engine operating conditions, e.g. start, stop or ambient conditions
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
  • F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
  • F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
  • F02M31/04—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture
  • F02M31/10—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture by hot liquids, e.g. lubricants or cooling water
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
  • F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
  • F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
  • F02M31/12—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating electrically
  • F02M31/125—Fuel
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
  • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
  • F02M37/0047—Layout or arrangement of systems for feeding fuel
  • F02M37/0064—Layout or arrangement of systems for feeding fuel for engines being fed with multiple fuels or fuels having special properties, e.g. bio-fuels; varying the fuel composition
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
  • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
  • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
  • F02M37/0023—Valves in the fuel supply and return system
  • F02M37/0035—Thermo sensitive valves
• • 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
  • Y02T10/10—Internal combustion engine [ICE] based vehicles
  • Y02T10/12—Improving ICE efficiencies

Definitions

• the invention relates to a device for the treatment of viscous fuels for with a.
• Coolant-cooled internal combustion engines of vehicles provided with a battery, which has a cavity in the fuel feed line to the engine, through which the fuel can flow, which can be thermally connected to the coolant circuit via a heat exchanger surface and in which an electrical heating device is arranged.
• Viscous fuels ' can be used for normal internal combustion engines, e.g. B. work with diesel oil can not be used easily. Due to their high viscosity, it is not possible to supply the fuels in sufficient quantities to the cylinders and to distribute them there sufficiently finely, for. B. by an injector. For this reason, many fuels that would appear suitable per se can be used to operate
• the object of the invention is to provide a device of the type mentioned at the outset, with which viscous fuels can be treated independently of external power sources without complicated actuations in such a way that they are suitable for driving internal combustion engines for motor vehicles.
• the solution according to the invention is that the device is designed in particular for vegetable oil, that the electric heating device can be fed by the vehicle battery and is thermostatically or time-controlled, and that the device can be operated automatically.
• the device according to the invention is intended to heat the fuel before it is fed to the internal combustion engine, which lowers its viscosity to such an extent that it can be used without problems in commercially available internal combustion engines, in particular diesel engines.
• the fuel is heated by the coolant circuit via the heat exchanger surface.
• the temperature of the coolant in the warm operating condition is approximately 70 ° to 90 ° C, which means optimal heating for the vegetable oil.
• an electrical heating device is arranged in the cavity. Before the engine is started, the vegetable oil in the cavity is brought to the required temperature with this heating device.
• the device has the advantage that it can be installed inexpensively and simply in the fuel feed line of an internal combustion engine. It has no moving parts and no expensive individual parts.
• a particularly inexpensive, simple, yet reliable embodiment is characterized in that the heating device is a glow plug. Such glow plugs are commercially available for diesel engines that have to be preheated.
• the heat exchanger surface is expediently a pipe coil which extends into the cavity and through which the cooling liquid flows.
• the device is controlled by a thermostat.
• a thermostat e.g. B. be provided that the heater is turned off as soon as the fuel reaches a predetermined temperature.
• the coolant can also be thermostatically controlled. If too much coolant flows through the heat exchanger while the coolant is still cold, the vegetable oil would be cooled again.
• the thermostat control of the cooling system of the internal combustion engine could be used, which only sends coolant through the radiator when the coolant has reached a certain temperature. If the heat exchanger of the device according to the invention is then connected in parallel to the cooler, coolant would only then be sent through the heat exchanger. Since this is then at a sufficient temperature, it could no longer cool the fuel down, but would warm it up.
• the heat exchanger of the device according to the invention could also be connected to the engine cooling circuit.
• the inflow to the heat exchanger could also be controlled by a thermostat and only then cooling Let the liquid flow through the heat exchanger when the coolant has reached the required temperature.
• the electric heating device is time-controlled. You could e.g. B. provide that the fuel located in the cavity is heated for 30 s, after which the electric heating device is switched off.
• the device can be associated with a starting delay. This means that the process of starting the engine is only possible or takes place automatically after the heating device has heated the fuel for a sufficient time. You could e.g. B. provide an automatic that the heater is operated for a certain time when the starter switch is operated and only then is the starter for the engine automatically started without further action by the operator.
• the coolant cannot heat the fuel.
• the coolant since the coolant has reached the sufficient temperature after a driving distance of approximately 5 to 10 km at the latest, it is only necessary to dimension the cavity so that its volume corresponds to the fuel consumption of a driving distance of approximately 5 to 10 km. In this case, after a one-off sufficiently heated heating material is available through the electric heating device until the heating effect of the coolant begins.
• This cavity is expediently thermally insulated so that it does not give off any heat to the outside at low outside temperatures.
• the heating device does not heat the fuel directly. Rather, it is arranged in an oil-filled chamber which has heat-conducting walls and extends into the cavity. In this way, the fuel is heated indirectly.
• the advantage here is that the heating device does not cool down immediately if the current with which it is heated is switched off for a shorter or longer time.
• FIG. 1 shows a first embodiment of the invention
• Fig. 2 shows a second embodiment of the invention
• FIG. 3 shows a special holding arrangement for the device according to the invention.
• the device according to the invention has a container 1 with a cavity 2-. This is inserted into the fuel line 3. The fuel flows through line 4 into the container and leaves it through line 5. In the cavity 2 there is also a pipe coils 6 arranged, which is flowed through by the coolant of an internal combustion engine, not shown. A glow plug is shown at 7, which can be supplied with current from the battery (not shown) via line 8.
• the heating device in the form of the glow plug 7 is at the top, and the fuel also flows into the cavity 2 at the top.
• the glow plug 7 is arranged at the bottom and the fuel flows in at the bottom, since the warm fuel flows upwards and is conducted to the engine. As a result of the warm fuel flowing upwards, it is also better mixed in the cavity 2.
• FIG. 2 shows a larger cavity 2, as z. B. would be used for trucks.
• two glow plugs 7 are used.
• FIG. 3 differs from that of FIG. 1 by the other type of control.
• the operation of the internal combustion engine is initiated by a push button switch 11, the switching signal of which is sent to a central control unit 12, which then immediately via a
• Switching unit. 13 supplies the glow plug 7 with current from the battery 14. After a desired temperature of the fuel in the cavity 2 is determined by a thermal sensor 15, the switching unit 13 switches off the current to the glow plug 7. Immediately afterwards or after a predetermined time interval after the button 11 has been actuated, the zen trale control unit 12, the starter of the engine, which is indicated at 1.
• the temperature of the incoming cooling water is monitored by a thermal sensor 17. As long as this temperature has not reached a certain predetermined value, a valve 18 remains closed.
• the thermal sensor 17 and the valve 18 are also connected to the central control unit 12.
• the device is provided with thermal insulation, which is indicated at 19 in FIG. 2.
• a further embodiment is indicated by dashed lines in FIG. 3.
• the glow plug 7 projects. not directly into the fuel, which is located in the cavity 2, but protrudes into a chamber 20 shown in broken lines, which is filled with oil.
• This chamber 20 has good heat-conducting walls. If the glow plug 7 is switched on, it first heats the oil in the chamber 20. The fuel is then heated indirectly when it flows past the walls of the chamber 20. The advantage is that the glow plug 7 does not cool down immediately when the current with which it is fed is switched off. The heating by the glow plug 7 is thereby made more uniform.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Air-Conditioning For Vehicles (AREA)
• Lubrication Of Internal Combustion Engines (AREA)
• Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
• Output Control And Ontrol Of Special Type Engine (AREA)
• Lubricants (AREA)

Priority Applications (1)

Applications Claiming Priority (4)

Publications (1)

Family

ID=8176476

Family Applications (2)

Family Applications Before (1)

Country Status (7)

Families Citing this family (9)

Family Cites Families (7)

• 2001
  • 2001-02-13 ES ES01103353T patent/ES2204768T3/es not_active Expired - Lifetime
  • 2001-02-13 EP EP01103353A patent/EP1233171B1/fr not_active Expired - Lifetime
  • 2001-02-13 AT AT01103353T patent/ATE246768T1/de not_active IP Right Cessation
  • 2001-02-13 DE DE50100463T patent/DE50100463D1/de not_active Expired - Fee Related
  • 2001-02-13 PT PT01103353T patent/PT1233171E/pt unknown
  • 2001-02-13 DK DK01103353T patent/DK1233171T3/da active
• 2002
  • 2002-02-13 EP EP02719819A patent/EP1362178A1/fr not_active Withdrawn
  • 2002-02-13 WO PCT/EP2002/001488 patent/WO2002064967A1/fr not_active Ceased

Non-Patent Citations (1)

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