WO2003006814A1 - Systeme d'entrainement de vehicule automobile comprenant un moteur a combustion interne - Google Patents

Systeme d'entrainement de vehicule automobile comprenant un moteur a combustion interne Download PDF

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Publication number
WO2003006814A1
WO2003006814A1 PCT/EP2002/007401 EP0207401W WO03006814A1 WO 2003006814 A1 WO2003006814 A1 WO 2003006814A1 EP 0207401 W EP0207401 W EP 0207401W WO 03006814 A1 WO03006814 A1 WO 03006814A1
Authority
WO
WIPO (PCT)
Prior art keywords
exhaust gas
fuel cell
combustion engine
internal combustion
motor vehicle
Prior art date
Application number
PCT/EP2002/007401
Other languages
German (de)
English (en)
Inventor
René Henrik Elias VAN DOORN
Jens Arik Almkermann
Michael Kah
Original Assignee
Audi 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 Audi Ag filed Critical Audi Ag
Publication of WO2003006814A1 publication Critical patent/WO2003006814A1/fr

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Classifications

    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/0406—Layout of the intake air cooling or coolant circuit
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/02—EGR systems specially adapted for supercharged engines
    • F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
    • F02M26/05—High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/23—Layout, e.g. schematics

Definitions

  • the invention relates to a motor vehicle drive system with an internal combustion engine, according to the preamble of claim 1.
  • a motor vehicle drive system with the features of claim 1 is proposed, which is characterized in that an exhaust gas-producing fuel cell device is provided which is operatively connected to an at least partial supply of the fuel cell exhaust gas to the internal combustion engine.
  • an exhaust gas-producing fuel cell device is provided which is operatively connected to an at least partial supply of the fuel cell exhaust gas to the internal combustion engine.
  • the fuel cell exhaust gas can also be supplied to an unrestricted intake air (charge air) and mixed with the same. Since the need for recirculating internal combustion engine exhaust gas to be recirculated with a supplementary supply of fuel cell exhaust gas is correspondingly reduced, a correspondingly lower throttling of the intake air is also advantageously required. Due to the throttling-related efficiency losses, a higher overall efficiency in the motor vehicle drive system can advantageously be achieved by supplying the fuel cell exhaust gas than with an exclusive conventional internal combustion engine exhaust gas recirculation.
  • the fuel cell device is advantageously connected to an exhaust gas recirculation device. Since the fuel cell exhaust gas is fed into the internal combustion engine in particular in combination with the conventional fuel cell exhaust gas recirculation, it is advantageous to use the exhaust gas recirculation device at least partially to supply the fuel exhaust gas into the internal combustion engine.
  • the fuel cell device has a membrane fuel cell and a fuel reformer.
  • a fuel cell device When using such a fuel cell device, it is advantageously not necessary to store and carry an additional, special fuel in the motor vehicle.
  • the fuel cell device contains a high-temperature solid oxide fuel cell. This type of fuel cell facility allows direct hydrocarbon power generation.
  • the internal combustion engine can be a gasoline engine or a diesel engine, especially with direct injection.
  • an advantageous supply of the fuel cell exhaust gas is possible in the operating map areas which are more extensive than in the conventional internal combustion engine exhaust gas recirculation.
  • a diesel engine with direct Injection results disadvantageously with an increase in the charge gas temperature due to a high internal combustion engine exhaust gas recirculation, a corresponding increase in soot emissions. This effect is known as so-called "NO x soot scissors". To limit this negative effect, a compromise with regard to the regulation of the intake air volume flow is necessary.
  • this compromise can also be made more favorable, since the chemical composition of the fuel cell exhaust gas contributes to effective NO x reduction, but the relatively low operating temperatures of the fuel cell exhaust gas, which is lower than 150 ° C. in a membrane fuel cell, are one in comparison to one purely conventional internal combustion engine exhaust gas recirculation has a lower tendency to undesired soot formation in the internal combustion engine exhaust gas.
  • the exhaust gas recirculation device advantageously has a mixing chamber for at least partially combining a charge air stream, an internal combustion engine exhaust gas stream and a fuel cell exhaust gas stream to form an exhaust gas / air mixture that can be fed into the internal combustion engine.
  • a mixing chamber for at least partially combining a charge air stream, an internal combustion engine exhaust gas stream and a fuel cell exhaust gas stream to form an exhaust gas / air mixture that can be fed into the internal combustion engine.
  • the respective composition of the resulting exhaust gas / air mixture can advantageously be determined using a suitable measuring device.
  • the composition of the exhaust gas / air mixture can preferably be set in an automated manner, in particular by means of at least one valve. This enables an operationally adapted and flexible setting of an internal combustion engine exhaust gas recirculation and / or a fuel cell exhaust gas supply into the internal combustion engine.
  • the fuel cell device is connected on the exhaust gas side to an intermediate reactor unit for generating hydrogen peroxide or OH radicals from the fuel cell exhaust gas.
  • an intermediate reactor unit for generating hydrogen peroxide or OH radicals from the fuel cell exhaust gas.
  • Hydrogen peroxide or OH radicals are generated in a chemical process, for example by means of catalytically assisted dehydrogenation of water or by synthesis from the residual hydrogen and atmospheric oxygen contained in the fuel cell exhaust gas. Free OH radicals are of particular importance for a desired soot oxidation and thus allow an advantageous reduction in particle emissions to be avoided in principle with the internal combustion engine exhaust gas.
  • the hydrogen peroxide formed dissociates almost completely in the combustion chamber to form free OH radicals, so that it achieves the advantageous effect of a desired soot reduction.
  • reduction in internal combustion engine exhaust can contribute.
  • lower particle emissions in the internal combustion engine exhaust gas allow the use of higher recirculation rates (up to 50%), so that advantageously a further reduction in NO x emissions in the internal combustion engine exhaust gas can be achieved.
  • the exhaust gas recirculation device preferably contains a charge air supply system that can be adjusted, in particular in an automated manner, for independently setting the charge air pressure and / or the recirculation rate of the internal combustion engine exhaust gas.
  • a charge air supply system that can be adjusted, in particular in an automated manner, for independently setting the charge air pressure and / or the recirculation rate of the internal combustion engine exhaust gas.
  • the use of such a charge air supply system is particularly useful in the case of direct-injection diesel engines.
  • the charge air supply system is advantageously designed such that a variable change in the turbine geometry of a supercharger is possible. If, in addition to the charge air pressure, the pressure drop across an internal combustion engine exhaust gas recirculation valve also changes when the supercharger is adjusted, this simultaneously leads to a corresponding variation in the recirculation rate of the internal combustion engine exhaust gas.
  • the fuel cell exhaust gas feed rate can also be set independently of the internal combustion engine exhaust gas recirculation.
  • the fuel cell device is advantageously an energy auxiliary device.
  • Such an energy auxiliary device serves in particular to cover an ever increasing demand for electrical power and thus a corresponding provision of electrical energy in a motor vehicle.
  • Such fuel cell auxiliary devices consist of a fuel cell unit and a fuel processing unit. Since by means of a fuel cell auxiliary device a more efficient generation of electricity is possible compared to an alternator driven by the internal combustion engine, its use is particularly suitable, for example, in upper class vehicles which have a relatively high number of electrical consumers.
  • a central control unit is advantageously provided for the automated setting of the composition of the exhaust gas / air mixture and / or the volume flow of the exhaust gas / air mixture to be fed into the internal combustion engine as a function of operating data of the internal combustion engine and / or the fuel cell device.
  • Such a central control unit can be used to provide flexible and economical fuel Cell exhaust gas supply and / or internal combustion engine exhaust gas recirculation into the internal combustion engine.
  • the figure shows a motor vehicle drive system, generally designated 10, in a schematic representation.
  • the drive system 10 includes an internal combustion engine 12, which may be a direct injection gasoline engine or a direct injection diesel engine. Furthermore, an exhaust gas recirculation device 14 is provided, by means of which the internal combustion engine exhaust gas can be at least partially recycled into the internal combustion engine 12.
  • the exhaust gas recirculation device 14 contains an exhaust manifold 18, which is connected to a line 22 for returning the internal combustion engine exhaust gas, which leads to a mixing chamber 42.
  • An internal combustion engine exhaust gas cooler 24 and an internal combustion engine exhaust gas valve 26 are integrated in the line 22.
  • Internal combustion engine exhaust gas not to be returned to the internal combustion engine 12 is fed through the line 20 to a turbocharger 28 which, in a manner known per se, feeds charge air into the mixing chamber 42 by means of a line 30 with the interposition of an intercooler 32.
  • the mixing chamber 42 is connected to a fuel cell device 16 by means of a line 36 such that the fuel cell exhaust gas can be fed into the mixing chamber 42.
  • the line 36 leads on the exhaust gas side from the fuel cell device 16 to an H 2 O 2 catalytic converter 34, from there to a fuel cell exhaust gas valve 38 and finally to the mixing chamber 42.
  • the mixing chamber 42 serves to at least partially combine the charge air flow (line 30 ) and / or the internal combustion engine exhaust gas flow (line 22) and / or the fuel cell exhaust gas flow (line 36) to form an exhaust gas / air mixture that can be fed into the internal combustion engine 12 by means of a line 40 leading from the mixing chamber 42 into the internal combustion engine 12 ( intake port).
  • a central control unit 44 is provided, which is operatively connected to the fuel cell exhaust valve 38 and the combustion engine exhaust valve 26 by means of control lines 48 in order to carry out an operationally advantageous and automated adjustment of the fuel cell exhaust gas supply and the internal combustion engine exhaust gas return to the internal combustion engine 12.
  • the central control unit 44 receives suitable operating data of the motor vehicle. If necessary, the turbocharger 28 can also be variably adjustable by means of the central control unit 44.
  • the motor vehicle drive system 10 thus permits an efficient and flexible fuel cell exhaust gas supply and / or internal combustion engine exhaust gas recirculation into the internal combustion engine 12 in order to achieve a desired reduction in NO x emissions when operating the motor vehicle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Abstract

Le système d'entraînement de véhicule automobile (10) de l'invention présente un moteur à combustion interne (12). Selon l'invention, un système de piles à combustible (16) produisant des gaz d'échappement, est relié d'un point de vue fonctionnel au moteur à combustion interne (12) afin de permettre une alimentation au moins partielle dudit moteur en gaz d'échappement de piles à combustible.
PCT/EP2002/007401 2001-07-13 2002-07-04 Systeme d'entrainement de vehicule automobile comprenant un moteur a combustion interne WO2003006814A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10133390.0 2001-07-13
DE10133390A DE10133390C2 (de) 2001-07-13 2001-07-13 Kraftfahrzeug-Antriebssystem mit einem Verbrennungsmotor

Publications (1)

Publication Number Publication Date
WO2003006814A1 true WO2003006814A1 (fr) 2003-01-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/007401 WO2003006814A1 (fr) 2001-07-13 2002-07-04 Systeme d'entrainement de vehicule automobile comprenant un moteur a combustion interne

Country Status (2)

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DE (1) DE10133390C2 (fr)
WO (1) WO2003006814A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2861220A1 (fr) * 2003-10-16 2005-04-22 Renault Sa Dispositif et procede de prechauffage d'un systeme pile a combustible

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040177607A1 (en) * 2003-03-11 2004-09-16 Toyota Jidosha Kabushiki Kaisha Internal combustion engine with a fuel cell in an exhaust system
DE102004054482A1 (de) * 2004-11-11 2006-05-18 Bayerische Motoren Werke Ag In einem Kraftfahrzeug mit Verbrennungsmotor als Stromerzeuger eingesetztes Brennstoffzellensystem
DE102005061574B4 (de) * 2005-12-22 2015-03-05 Airbus Operations Gmbh Hybridsystem von Brennstoffzelle und Verbrennungsmotor

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3241536A (en) * 1964-11-27 1966-03-22 James P Malone Anti-smog means
US3664134A (en) * 1970-08-10 1972-05-23 Whole Earth Corp The Combustion system
JPS59213940A (ja) * 1983-05-20 1984-12-03 Nissan Motor Co Ltd 改質ガスエンジン
US4716859A (en) * 1985-05-08 1988-01-05 Volkswagen Ag Process for treatment of liquids consisting primarily of methanol
US5293857A (en) * 1990-11-02 1994-03-15 Stanley Meyer Hydrogen gas fuel and management system for an internal combustion engine utilizing hydrogen gas fuel
EP1030395A2 (fr) * 1999-02-01 2000-08-23 Delphi Technologies, Inc. Système de production d'énergie utilisant une pile à combustible à oxyde solide à l'échappement d'un moteur

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4399884B2 (ja) * 1999-02-22 2010-01-20 アイシン精機株式会社 燃料電池システム
DE19928102B4 (de) * 1999-06-19 2005-06-02 Daimlerchrysler Ag Fahrzeug mit einem Antriebs-Verbrennungsmotor und mit einem Brennstoffzellensystem zur Stromversorgung elektrischer Verbraucher des Fahrzeugs und Verfahren zum Betrieb eines derartigen Fahrzeugs

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3241536A (en) * 1964-11-27 1966-03-22 James P Malone Anti-smog means
US3664134A (en) * 1970-08-10 1972-05-23 Whole Earth Corp The Combustion system
JPS59213940A (ja) * 1983-05-20 1984-12-03 Nissan Motor Co Ltd 改質ガスエンジン
US4716859A (en) * 1985-05-08 1988-01-05 Volkswagen Ag Process for treatment of liquids consisting primarily of methanol
US5293857A (en) * 1990-11-02 1994-03-15 Stanley Meyer Hydrogen gas fuel and management system for an internal combustion engine utilizing hydrogen gas fuel
EP1030395A2 (fr) * 1999-02-01 2000-08-23 Delphi Technologies, Inc. Système de production d'énergie utilisant une pile à combustible à oxyde solide à l'échappement d'un moteur

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 009, no. 087 (M - 372) 17 April 1985 (1985-04-17) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2861220A1 (fr) * 2003-10-16 2005-04-22 Renault Sa Dispositif et procede de prechauffage d'un systeme pile a combustible

Also Published As

Publication number Publication date
DE10133390A1 (de) 2003-01-30
DE10133390C2 (de) 2003-06-18

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