[go: up one dir, main page]

WO2008012005A1 - Moteur à combustion interne à allumage commandé pour carburants gazeux, et procédé de fonctionnement d'un tel moteur à combustion interne - Google Patents

Moteur à combustion interne à allumage commandé pour carburants gazeux, et procédé de fonctionnement d'un tel moteur à combustion interne Download PDF

Info

Publication number
WO2008012005A1
WO2008012005A1 PCT/EP2007/006310 EP2007006310W WO2008012005A1 WO 2008012005 A1 WO2008012005 A1 WO 2008012005A1 EP 2007006310 W EP2007006310 W EP 2007006310W WO 2008012005 A1 WO2008012005 A1 WO 2008012005A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
internal combustion
combustion engine
gaseous fuel
fuel
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/EP2007/006310
Other languages
German (de)
English (en)
Inventor
Martin Bechtold
Frank Jacobi
Martin Matt
Jörg SIEVERT
Klaus Wunderlich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler AG
Daimler AG
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 DaimlerChrysler AG, Daimler AG filed Critical DaimlerChrysler AG
Publication of WO2008012005A1 publication Critical patent/WO2008012005A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • F01N3/2033—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using a fuel burner or introducing fuel into exhaust duct
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/30—Arrangements for supply of additional air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/36—Arrangements for supply of additional fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/02—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with gaseous fuels
    • F02D19/021—Control of components of the fuel supply system
    • F02D19/023—Control of components of the fuel supply system to adjust the fuel mass or volume flow
    • 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
    • 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
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

Definitions

  • the invention relates to a foreign-fired internal combustion engine for gaseous fuels with the features of the preamble of claim 1 and a method for operating a foreign-fired internal combustion engine for gaseous fuels with the features of the preamble of claim. 7
  • German Offenlegungsschrift DE 102 49 274 A1 discloses a gas-fueled internal combustion engine in which a gas-air mixture is introduced into the exhaust system upstream of the catalytic converter for the purpose of rapid heating of the catalytic converter. From an air filter, air is pumped into the exhaust system by a secondary air pump. In order to improve afterburning of the exhaust gas and heating of the catalyst, gaseous fuel is supplied to the air from the secondary air pump from a gas tank via a gas valve. With the method shown, it is not possible to achieve an accurate metering of the gaseous fuel in order to produce a good fuel gas and a good mixing with the air. Depending on the operating point, different pressures prevail in the exhaust system, as a result of which different amounts of air are pumped through the secondary air pump into the exhaust system. The Problem of this device is therefore in the exact mixing of the amount of fuel to the amount of secondary air.
  • the object of the invention is in contrast to provide a foreign-fired internal combustion engine for gaseous fuels available, in addition to the heating of a catalyst during cold start air and gaseous fuel is introduced in the correct mixing ratio in the exhaust system.
  • Another object of the invention is to provide a method of operating such an internal combustion engine.
  • the inventive, externally ignited internal combustion engine for gaseous fuels has a mixing device for mixing air and gaseous fuel.
  • the mixer provides a mixture of air and gaseous fuel in a particular ratio.
  • the additional fuel gas necessary for a post-reaction is therefore not achieved by enrichment of the mixture in the cylinder, but is blown together with the secondary air into the exhaust system upstream of the catalyst. Since the injected air volume fluctuates and depends on the exhaust backpressure, it is essential for a good afterburning to be able to regulate the amount of fuel supplied as well. This is done by means of a mixing device with which a certain ratio of supplied air and additionally injected gaseous fuel is adjustable.
  • the ratio of the supplied air and the gaseous fuel to each other is fixed in the mixing device or controllable in a more complex design by a control unit depending on the operating point of the internal combustion engine.
  • the mixing device is constructed so that at least one check valve and a pressure control valve are provided.
  • the air from the secondary air pump can be attributed to the gaseous fuel.
  • the mixing device is constructed so that in each case at least one check valve and a pressure regulating valve are provided for the air and the gaseous fuel.
  • the pressure control valves in the air or fuel line are arranged within the mixing device and are regulated by the respective other gas flow so that a predetermined ratio of the two gases is maintained.
  • Any type of mixing device that adjusts a predetermined ratio of the two gases is usable, but a simple and less susceptible structure is preferable. With such a mixing device, a fuel-air mixture in the correct mixing ratio is injected into the exhaust system at each exhaust back pressure.
  • the inventive method for operating an externally ignited, operated with gaseous fuel internal combustion engine is characterized in that for the rapid heating of an exhaust gas treatment device, air and gaseous fuel is fed into an exhaust system upstream of an exhaust aftertreatment device.
  • the exhaust aftertreatment device is designed for example as a 3-way catalyst.
  • the air and the gaseous fuel burn in an exothermic reaction and heat the catalyst at the start of the engine quickly to its operating temperature.
  • the amount of fuel is metered independently of the exhaust back pressure depending on the amount of air and / or the air pressure. As a result, both a lack of air and an excess of air in the fuel gas for afterburning avoided.
  • the air and the gaseous fuel are mixed in the mixing device.
  • the catalyst can be heated in order to achieve the highest possible pollutant conversion in the catalyst.
  • a further embodiment of the method according to the invention is set in lean operation of the internal combustion engine in the mixing device rich fuel-air mixture and added to the exhaust gas.
  • Internal combustion engines with gaseous fuel, such as natural gas can be operated with a lean mixture in certain operating ranges without combustion incidents occurring.
  • a rich fuel-air mixture is adjusted in the mixing device.
  • a late ignition timing is set at stoichiometric operation of the internal combustion engine, in order thereby to delay the combustion.
  • a stoichiometric fuel-air mixture is adjusted by the mixing device and added to the exhaust gas upstream of the catalyst.
  • the ratio between the amount of air and the amount of gaseous fuel is regulated in the mixing device with pressure regulating valves connected in cross. In this way, a correct ratio between the amount of air and the amount of gaseous fuel is always set at different pressures in the exhaust system.
  • Fig. 1 is a schematic representation of
  • FIG. 2 Internal combustion engine and Fig. 2 is a schematic representation of the mixing device.
  • Fig. 1 is a schematic representation of an internal combustion engine 1 for gaseous fuels, such as natural gas, shown.
  • gaseous fuels such as natural gas
  • CNG Compressed Natural Gas
  • the gaseous fuel is hereinafter referred to as fuel gas.
  • the internal combustion engine 1 consists of a motor housing 2 with a cylinder head, not shown, which is shown in four-cylinder in-line construction. However, other cylinder numbers and arrangements are also conceivable.
  • a throttle valve 3 and an intake system 4 are arranged on the internal combustion engine 1. The intake air flows through an air filter 5 and the throttle valve 3 in the intake system 4 and is passed over four individual intake 6 in the cylinder head.
  • an exhaust system 7 is provided on the internal combustion engine 1, which collects the exhaust gases from the internal combustion engine 1 in an exhaust manifold 8 and from there an exhaust aftertreatment system 9, such as a catalyst, passes. From there, the cleaned exhaust gases leave the exhaust system 7 into the environment via a silencer (not shown).
  • an air line 10, a secondary air pump 11, a mixing device 12 and a plurality of secondary air lines 13 are arranged in the immediate vicinity of the internal combustion engine 1.
  • the mixing device 12 the air with fuel gas from a fuel gas tank 14 is intensively mixed and then close to several, in particular four secondary air lines 13 of the exhaust system 7 close the internal combustion engine 1 is supplied.
  • each secondary air line 13 is connected to a single exhaust manifold pipe 15 upstream of a collection point 16.
  • a central introduction of the secondary air can be provided in a manifold of the exhaust system 7. This fuel gas-air mixture reacts exothermally or burns due to the hot exhaust gas in the exhaust system 7 and brings in this way the exhaust system 7 downstream catalyst 9 quickly to its operating temperature.
  • a rich fuel-air mixture that is, a mixture with lack of air, blown into the exhaust system 7 for afterburning, so as to exothermic reaction by afterburning obtained, which heats the catalyst 9.
  • the secondary air pump 11 is usually designed as a simple, electrically or mechanically driven pump, which is not readjusted to pressure fluctuations on the pressure side, but is controlled only to an operating state or standstill. A fluctuating back pressure on the pressure side can not be compensated by such a pump, which means that at different pressures in the exhaust system 7 different amounts of air are pumped through the secondary air pump 11.
  • a mixing device 12 is provided in order to avoid an expensive air mass meter for detecting the secondary air quantity or secondary air mass.
  • the mixing device 12 Due to the pressure conditions in the air supply via the secondary air pump and the fuel gas supply, the mixing device 12 always sets a predetermined ratio of air quantity to gas quantity. 2, a possible embodiment of such a mixing device 12 is shown schematically.
  • the mixing device 12 has a first supply line 17 for air from the secondary air pump 11 and a second supply line 18 for the fuel gas from the fuel gas tank 14 and for the fuel gas-air mixture formed later a leading-off line 19 to the four secondary air lines 13.
  • both supply lines 17, 18, the air or the fuel gas flows in each case to a pressure regulating valve 20; 21, whose control pressure from the other medium via a connection 22; 23 from a check valve 24; 25 is formed.
  • the pressure control valves 20, 21 are each connected in cross with the check valves 24, 25.
  • the air is pumped by the secondary air pump 11 via the first supply line 17 into the first pressure regulating valve 20. From there, the air flows through the first check valve 24 into the mixing chamber 26.
  • the fuel gas flows from the fuel gas tank 14 via the second supply line 18 in the second pressure control valve 21. The fuel gas is in the fuel gas tank 14 under high, but filling-dependent pressure and therefore does not need to be pumped become. From the second pressure control valve 21, the fuel via the second check valve 25 also flows into the mixing chamber 26. In the mixing chamber 26 in the mixing device 12 fuel gas and air is mixed, so that a fuel gas-air mixture is formed, which leaves the mixing device 12 and on the away Line 19 continues to flow into the four secondary air lines 13 or via a central introduction, not shown, in the exhaust system 7.
  • connection 22, 23 are the pressure control valves 20, 21 with the check valves 24, 25 of the other medium in such a cross in combination that at any time a predetermined mixing ratio between air and fuel gas is adjusted. This happens independently of the pressure in the exhaust system 7 and the dependent pressure that the secondary air pump 11 generates.
  • mixing device 12 there are also other types and designs of the mixing device 12 as the shown possible. However, it is necessary that the mixing ratio between air and fuel gas in the mixing device 12 can be set independently of the exhaust gas back pressure in the exhaust system 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

Les moteurs à combustion interne à allumage commandé pour carburants gazeux font partie de l'état de la technique, de même que les catalyseurs de post-traitement des gaz d'échappement qui subissent un chauffage rapide au cours de la phase de chauffe du moteur à combustion interne par post-combustion de carburant dans le système d'échappement. L'invention a pour objet un moteur à combustion interne (1) à allumage commandé qui fonctionne avec du carburant gazeux, et comprend un système d'échappement (7) doté d'un dispositif de post-traitement des gaz d'échappement (9), un mélange d'air et de carburant gazeux destiné à une post-combustion pouvant être introduit en amont du dispositif de post-traitement des gaz d'échappement (9) pour augmenter la température des gaz d'échappement. Selon l'invention, l'air provient d'une pompe à air secondaire (11) et le carburant gazeux provient d'un réservoir à carburant gazeux (14). Un dispositif de mélange (12) est utilisé pour mélanger l'air et le carburant gazeux et fournir une mélange d'air et de carburant gazeux selon des proportions déterminées. L'invention s'applique aux moteurs à combustion interne à allumage commandé pour carburant gazeux.
PCT/EP2007/006310 2006-07-28 2007-07-17 Moteur à combustion interne à allumage commandé pour carburants gazeux, et procédé de fonctionnement d'un tel moteur à combustion interne Ceased WO2008012005A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006035077A DE102006035077A1 (de) 2006-07-28 2006-07-28 Fremdgezündete Brennkraftmaschine für gasförmige Kraftstoffe und Verfahren zum Betrieb der Brennkraftmaschine
DE102006035077.4 2006-07-28

Publications (1)

Publication Number Publication Date
WO2008012005A1 true WO2008012005A1 (fr) 2008-01-31

Family

ID=38537845

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/006310 Ceased WO2008012005A1 (fr) 2006-07-28 2007-07-17 Moteur à combustion interne à allumage commandé pour carburants gazeux, et procédé de fonctionnement d'un tel moteur à combustion interne

Country Status (2)

Country Link
DE (1) DE102006035077A1 (fr)
WO (1) WO2008012005A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010088438A3 (fr) * 2009-02-02 2010-10-28 Borgwarner Inc. Dispositif d'entraînement

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103711617B (zh) * 2013-06-04 2016-07-06 黎云辉 用于内燃机的节油装置
DE102015200090B4 (de) 2015-01-07 2021-09-30 Volkswagen Aktiengesellschaft Sekundärluftsystem und Verfahren zur Prüfung der Funktionsfähigkeit des Sekundärluftsystems
DE102022212891A1 (de) 2022-11-30 2024-06-06 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10249274A1 (de) * 2002-10-23 2004-05-13 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Verfahren zum Betrieb einer mit Gas betriebenen Verbrennungskraftmaschine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10249274A1 (de) * 2002-10-23 2004-05-13 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Verfahren zum Betrieb einer mit Gas betriebenen Verbrennungskraftmaschine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010088438A3 (fr) * 2009-02-02 2010-10-28 Borgwarner Inc. Dispositif d'entraînement
CN102282352B (zh) * 2009-02-02 2014-08-20 博格华纳公司 驱动装置
US8887699B2 (en) 2009-02-02 2014-11-18 Borgwarner Inc. Drive device

Also Published As

Publication number Publication date
DE102006035077A1 (de) 2008-01-31

Similar Documents

Publication Publication Date Title
DE2907934C2 (de) Mehrzylindrige Brennkraftmaschine, insbesondere für Kraftfahrzeuge
EP0599060A1 (fr) Brûleur de dépollution ou de purification d'un moteur à combustion interne
DE102019101576A1 (de) Vorrichtung und Verfahren zur Abgasnachbehandlung eines Verbrennungsmotors
WO2014072040A1 (fr) Moteur à gaz suralimenté par un mélange et procédé de compensation d'écarts de coefficient de rendement dans un moteur à gaz suralimenté par un mélange
EP3680461A1 (fr) Système d'air de régénération pour un système de traitement des gaz d'échappement d'un moteur à combustion interne et procédé de traitement des gaz d'échappement
EP2948655A1 (fr) Procédé permettant de faire fonctionner un dispositif d'entraînement et dispositif d'entraînement correspondant
DE102019121428A1 (de) Verfahren zum Aufheizen eines Katalysators und Abgasnachbehandlungssystem
EP1807612A1 (fr) Dispositif et procede de production d'un agent de fonctionnement d'un vehicule automobile
DE102017209693A1 (de) Verfahren zum Regenerieren eines Partikelfilters in der Abgasanlage eines Verbrennungsmotors sowie Verbrennungsmotor
WO2008012005A1 (fr) Moteur à combustion interne à allumage commandé pour carburants gazeux, et procédé de fonctionnement d'un tel moteur à combustion interne
DE102013210116B3 (de) Brennkraftmaschine und Verfahren zum Betreiben einer Brennkraftmaschine
EP1180586B1 (fr) Moteur à combustion interne multicylindres comportant un dispositif pour chauffer un catalyseur
DE102015220408A1 (de) Verfahren und Vorrichtung zur Beheizung eines Katalysators
DE102019134859A1 (de) Sekundärluftsystem und Abgasanlage mit einem solchen Sekundärluftsystem
EP3770386B1 (fr) Système de post-traitement des gaz d'échappement et procédé de post-traitement des gaz d'échappement d'un moteur à combustion interne
DE102018111738A1 (de) Verfahren zur Reduzierung der Partikelemissionen bei einem Kaltstart eines Verbrennungsmotors
DE4440833A1 (de) Katalysator-Anordnung zur Reduktion von Stickoxiden in sauerstoffhaltigen Abgasen einer Brennkraftmaschine, insbesondere Dieselmotor
DE102013200621B4 (de) Verfahren und Vorrichtung zur Erhöhung der Temperatur einer Abgasreinigungsanlage
DE69722260T2 (de) Vorrichtung und verfahren zum reduzieren der abgasemissionen in systemen mit katalytischen konvertern
DE102021107433A1 (de) Verbrennungsmotor sowie Verfahren zum Betreiben eines Verbrennungsmotors
DE102017101610A1 (de) Verfahren zur Reduzierung der Kaltstart-Emissionen bei einem fremdgezündeten Verbrennungsmotor
DE10315476B4 (de) Verfahren zum Aufheizen von Abgasnachbehandlungssystemen
DE19812829B4 (de) Verfahren für die Regelung einer Brennkraftmaschine mit innerer Verbrennung
DE102022108338B3 (de) Brennkraftmaschine und zugehöriges Betriebsverfahren
DE102004019831A1 (de) Verfahren zum Betreiben einer Brennkraftmaschine eines Fahrzeuges, insbesondere eines Kraftfahrzeuges

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07786110

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

NENP Non-entry into the national phase

Ref country code: RU

122 Ep: pct application non-entry in european phase

Ref document number: 07786110

Country of ref document: EP

Kind code of ref document: A1