EP0775822B1 - Procédé et dispositif d'aide au démarrage à froid de véhicules automobiles - Google Patents
Procédé et dispositif d'aide au démarrage à froid de véhicules automobiles Download PDFInfo
- Publication number
- EP0775822B1 EP0775822B1 EP96402432A EP96402432A EP0775822B1 EP 0775822 B1 EP0775822 B1 EP 0775822B1 EP 96402432 A EP96402432 A EP 96402432A EP 96402432 A EP96402432 A EP 96402432A EP 0775822 B1 EP0775822 B1 EP 0775822B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- engine
- burner
- fact
- catalyst
- exchanger
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N19/00—Starting aids for combustion engines, not otherwise provided for
- F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
- F02N19/04—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines
- F02N19/10—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines by heating of engine coolants
Definitions
- the present invention relates to the field of cold starting of vehicles automobiles having an internal combustion engine.
- patent FR 2 706 184 describes a such a fuel vaporization device.
- One known way is to cover the catalyst with a layer intended to lower the temperature at which the catalyst begins to be active.
- Another solution may consist in injecting additional air, by upstream of the catalyst which thus receives additional energy and heats up more quickly.
- the heating of the intake air is carried out by another circuit separate from the main engine circuit which results in a complication of the device.
- the present invention overcomes in particular the problems of the art previous stated above.
- the present invention provides a method for improving both the consumption and anti-pollution of cold engines.
- One of the advantages of the present invention is to provide a means of heating whose consumption can be compensated in order not to degrade the thermal and economic balance.
- the subject of the present invention is a method of starting assistance with cold for motor vehicles with internal combustion engine comprising a catalyst placed in the engine exhaust line consisting of using a burner and a gas-liquid exchanger integrated into the coolant circuit, said burner being used to directly heat the exhaust gases, the catalyst and exchanger integrated in the cooling circuit, characterized in that we use the calories from said burner and conveyed by the liquid cooling to heat the air admitted to the engine and then to heat the oil of the engine, the metallic mass of the engine and the air for heating the passenger compartment.
- the method is used for a determined period, basically when the engine is cold.
- the method according to the invention can be used for a period determined based on engine speed and load.
- the burner is supplied with the same fuel as the engine.
- the catalyst can be placed between the burner and the heat exchanger.
- the heat exchanger can be arranged between the burner and the catalyst.
- the present invention further relates to a starting aid device for cold of motor vehicles with internal combustion engine comprising a catalyst placed in the engine exhaust line and a fluid circuit cooling, said device comprising a burner and a gas-liquid exchanger integrated in the coolant circuit, said burner being placed in such a way that it directly heats the exhaust gases, the catalyst and the gas-liquid exchanger integrated in the cooling circuit, characterized by which it also includes means for transferring calories conveyed by the coolant to the engine intake air and then to the engine oil, the metallic earth of the engine and the air for heating the passenger compartment of the vehicle.
- the burner is supplied with the same fuel as the engine.
- the burner is put into operation for a fixed period, mainly when the engine is cold.
- the burner is put into operation for a fixed duration, depending on the engine speed and load.
- This figure shows schematically an internal combustion engine 1 and the associated cooling circuit 7.
- the coolant circulates thanks to a pump 2 through several elements for heat exchange: in addition to the metallic mass of the engine 1 itself, the water exchanges calories with the oil via an oil-water exchanger 3, with the intake air via an air-water exchanger 11, and with the passenger compartment via a air heater 4.
- a thermostat 9 also makes it possible to regulate the flow of circulating water in a radiator 10 and the oil-water exchanger 3.
- At least one burner 5 is placed on the circuit cooling so that it can heat a gas-liquid exchanger 6 integrated in the cooling circuit 7 of the engine 1.
- the exchanger 6 is arranged on the exhaust 8, so that the combustion gases from the burner 5 pass through the exchanger 6 then are evacuated with the exhaust gases which they heat. So the combustion gases from the burner 5 can be used to heat a catalyst (not referenced) placed in the exhaust 8. Once the catalyst is primed, the gases are converted by it.
- part of the heat from the combustion gases of the burner 5 is thus captured by the coolant which, via the usual organs of the cooling circuit 7, will transfer this heat to the oil (via the exchanger 3), to the intake air, to the passenger compartment (via the air heater 4) and to earth metallic motor 1.
- the catalyst (not referenced) can be placed in front of the exchanger 6 integrated in the cooling circuit 7.
- the operating time of the burner 5 will naturally depend on the outside temperature, but also of the speed and the load imposed on the engine 1. In all cases, only the first minutes of starting must be assisted in this way, a compromise must be sought in order not to increase the overconsumption.
- the engine is considered to be cold when the cooling system temperature is less than about 50 ° C.
- One or more temperature sensors will be provided on the engine, associated with a burner control element in order to activate it beyond a certain temperature.
- the essential advantage of the device lies in the improvement of the depollution, carried out globally by accelerated heating of all parts of the engine, in particular that of the air admitted for better carburetion, and exhaust catalyst for faster priming.
- the heating of the passenger compartment can be secured at a level sufficient to not require any other additional means of heating.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
- Air-Conditioning For Vehicles (AREA)
Description
Claims (10)
- Procédé d'aide au démarrage à froid pour des véhicules automobiles à moteur à combustion interne comprenant un catalyseur placé dans la ligne d'échappement du moteur consistant à utiliser un brûleur et un échangeur gaz-liquide intégré au circuit de liquide de refroidissement, ledit brûleur étant utilisé pour chauffer directement les gaz d'échappement, le catalyseur et l'échangeur intégré au circuit de refroidissement, caractérisé en ce qu'on utilise les calories issues dudit brûleur et véhiculées par le liquide de refroidissement pour chauffer l'air admis dans le moteur puis pour chauffer l'huile du moteur, la masse métallique du moteur et l'air pour le chauffage de l'habitacle.
- Procédé selon la revendication 1, caractérisé en ce qu'il est utilisé pendant une durée déterminée, essentiellement lorsque le moteur est froid.
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il est utilisé pendant une durée déterminée en fonction du régime et de la charge du moteur (1).
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le brûleur (5) est alimenté par le même carburant que le moteur (1).
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit catalyseur est disposé entre le brûleur (5) et l'échangeur (6).
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'échangeur (6) est disposé entre ledit brûleur (5) et ledit catalyseur.
- Dispositif d'aide au démarrage à froid de véhicules automobiles à moteur (1) à combustion interne comprenant un catalyseur placé dans la ligne d'échappement du moteur et un circuit de liquide de refroidissement, ledit dispositif comportant un brûleur (5) et un échangeur gaz-liquide (6) intégré au circuit de liquide de refroidissement, ledit brûleur étant placé de tel façon qu'il chauffe directement les gaz d'échappement, le catalyseur et l'échangeur gaz-liquide (6) intégré dans le circuit de refroidissement, caractérisé en ce qu'il comporte également des moyens permettant de transférer les calories véhiculées par le liquide de refroidissement à l'air d'admission du moteur puis à l'huile du moteur, à la masse métallique du moteur et à l'air pour le chauffage de l'habitacle du véhicule.
- Dispositif selon la revendication 7, caractérisé en ce que le brûleur (5) est alimenté par le même carburant que le moteur (1).
- Dispositif selon l'une quelconque des revendications 7 à 8, caractérisé en ce que le brûleur (5) est mis en fonctionnement pendant une durée déterminée, essentiellement lorsque le moteur est froid.
- Dispositif selon l'une quelconque des revendications 7 à 9, caractérisé en ce que le brûleur (5) est mis en fonctionnement pendant une durée déterminée, en fonction du régime et de la charge du moteur.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9514062 | 1995-11-23 | ||
FR9514062A FR2741675B1 (fr) | 1995-11-23 | 1995-11-23 | Procede et dispositif d'aide au demarrage a froid de vehicules automobiles |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0775822A1 EP0775822A1 (fr) | 1997-05-28 |
EP0775822B1 true EP0775822B1 (fr) | 2003-01-02 |
Family
ID=9484945
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96402432A Expired - Lifetime EP0775822B1 (fr) | 1995-11-23 | 1996-11-14 | Procédé et dispositif d'aide au démarrage à froid de véhicules automobiles |
Country Status (4)
Country | Link |
---|---|
US (1) | US6047676A (fr) |
EP (1) | EP0775822B1 (fr) |
DE (1) | DE69625578D1 (fr) |
FR (1) | FR2741675B1 (fr) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2766763B1 (fr) | 1997-08-04 | 1999-09-03 | Inst Francais Du Petrole | Procede et systeme de chauffage de l'habitacle et/ou du moteur d'un vehicule automobile |
JPH11117739A (ja) * | 1997-10-09 | 1999-04-27 | Toyota Motor Corp | 内燃機関の冷却水循環装置 |
JP3695187B2 (ja) * | 1998-01-21 | 2005-09-14 | トヨタ自動車株式会社 | 内燃機関用燃焼式ヒータ |
GB2338056B (en) * | 1998-04-14 | 2002-08-28 | Gec Alsthom Diesels Ltd | Fluid circuit arrangement |
JP3514119B2 (ja) * | 1998-06-18 | 2004-03-31 | トヨタ自動車株式会社 | 燃焼式ヒータを有する内燃機関 |
WO2002103198A1 (fr) * | 2001-06-19 | 2002-12-27 | Microcoating Technologies, Inc. | Gestion thermique de moteurs |
US8118239B2 (en) * | 2004-05-18 | 2012-02-21 | International Thermal Investments Ltd. | Potable water heater |
US20070256797A1 (en) * | 2006-05-04 | 2007-11-08 | Steve Orton | Roll-up door system |
CN102359429A (zh) * | 2011-11-01 | 2012-02-22 | 徐州万邦道路工程装备服务股份公司 | 一种发动机低温冷启动系统 |
CN106194493A (zh) * | 2016-08-05 | 2016-12-07 | 上海交通大学 | 一种发动机排气能量回收的综合热管理系统 |
US10982629B2 (en) * | 2019-01-30 | 2021-04-20 | Volvo Car Corporation | Vehicle intake air heater |
CN111765029B (zh) * | 2020-05-25 | 2022-02-15 | 中国第一汽车股份有限公司 | 一种冷却液预热和余热回收装置及车辆 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3341097A1 (de) * | 1983-11-12 | 1985-05-23 | Volkswagenwerk Ag, 3180 Wolfsburg | Brennkraftmaschine fuer fahrzeuge, insbesondere personenkraftfahrzeuge |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3732796A (en) * | 1970-07-09 | 1973-05-15 | Thomson Csf | Line tracing systems using laser energy for exposing photo-sensitive substrates |
DE3144349A1 (de) * | 1981-11-07 | 1983-05-19 | Bayerische Motoren Werke AG, 8000 München | Diesel-brennkraftmaschine mit russabbrenn-vorrichtung |
US4448157A (en) * | 1982-03-08 | 1984-05-15 | Eckstein Robert J | Auxiliary power unit for vehicles |
US4513911A (en) * | 1983-07-05 | 1985-04-30 | Sanchez Francis F | Auxiliary vehicle space heater |
EP0197823A1 (fr) * | 1985-03-20 | 1986-10-15 | Valeo | Echangeur de chaleur pour véhicule automobile en particulier du type à gaz d'échappement |
US4685292A (en) * | 1985-09-09 | 1987-08-11 | Zwick Energy Research Organization, Inc. | Exhaust cooling system for internal combustion engine |
US4777796A (en) * | 1987-03-09 | 1988-10-18 | Teledyne Industries, Inc. | Heat recovery muffler system |
US4781242A (en) * | 1987-03-09 | 1988-11-01 | Volvo Flygmotor A.B. | Exhaust heat recovery system for compartment heating |
DE3730598A1 (de) * | 1987-09-11 | 1989-03-23 | Eberspaecher J | Waermetraegerkreislauf fuer eine fahrzeugheizung mit einem motorunabhaengigen heizgeraet |
DE3914834A1 (de) * | 1989-05-05 | 1990-11-08 | Webasto Ag Fahrzeugtechnik | Heizgeraet |
WO1991013247A1 (fr) * | 1990-02-27 | 1991-09-05 | Orbital Engine Company (Australia) Pty Limited | Reglage d'emission de gaz d'echappement |
DE4026595A1 (de) * | 1990-08-23 | 1992-02-27 | Man Nutzfahrzeuge Ag | Fahrgastraumheizung fuer fahrzeuge |
DE4132439A1 (de) | 1991-09-28 | 1993-04-01 | Behr Gmbh & Co | Abgaskatalysator |
DE4139600A1 (de) * | 1991-11-30 | 1993-06-03 | Emitec Emissionstechnologie | Verfahren zum beheizen eines abgaskatalysators und abgasanlage eines verbrennungsmotors |
US5205250A (en) * | 1991-12-06 | 1993-04-27 | Herbert Easterly | Fuel preheating system |
DE4208621A1 (de) * | 1992-03-18 | 1993-09-23 | Bayerische Motoren Werke Ag | Abgasanlage einer ein kraftfahrzeug antreibenden brennkraftmaschine |
FR2706184B1 (fr) | 1993-06-07 | 1995-07-21 | Inst Francais Du Petrole | Dispositif de vaporisation de carburant dans un conduit d'admission d'un moteur à combustion interne. |
DE4340613A1 (de) | 1993-11-29 | 1995-06-01 | Bayerische Motoren Werke Ag | Mehrflutige Brennkraftmaschinen-Abgasanlage mit einem Brenner |
-
1995
- 1995-11-23 FR FR9514062A patent/FR2741675B1/fr not_active Expired - Fee Related
-
1996
- 1996-11-14 EP EP96402432A patent/EP0775822B1/fr not_active Expired - Lifetime
- 1996-11-14 DE DE69625578T patent/DE69625578D1/de not_active Expired - Fee Related
- 1996-11-18 US US08/751,734 patent/US6047676A/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3341097A1 (de) * | 1983-11-12 | 1985-05-23 | Volkswagenwerk Ag, 3180 Wolfsburg | Brennkraftmaschine fuer fahrzeuge, insbesondere personenkraftfahrzeuge |
Also Published As
Publication number | Publication date |
---|---|
US6047676A (en) | 2000-04-11 |
FR2741675A1 (fr) | 1997-05-30 |
FR2741675B1 (fr) | 1998-01-02 |
DE69625578D1 (de) | 2003-02-06 |
EP0775822A1 (fr) | 1997-05-28 |
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