EP1013914A1 - Krafstoffeinspritzanlage für eine Brennkraftmaschine - Google Patents
Krafstoffeinspritzanlage für eine Brennkraftmaschine Download PDFInfo
- Publication number
- EP1013914A1 EP1013914A1 EP99403253A EP99403253A EP1013914A1 EP 1013914 A1 EP1013914 A1 EP 1013914A1 EP 99403253 A EP99403253 A EP 99403253A EP 99403253 A EP99403253 A EP 99403253A EP 1013914 A1 EP1013914 A1 EP 1013914A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- engine
- pressure
- fuel
- injectors
- control means
- 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.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
- F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2250/00—Engine control related to specific problems or objectives
- F02D2250/31—Control of the fuel pressure
Definitions
- the present invention relates to a circuit fuel supply for a combustion engine internal.
- the invention applies to direct injection engines.
- Power circuits usually encountered in internal combustion engines of motor vehicles include a high pump pressure, a rail of injectors which is supplied with fuel through the high pressure pump and means for controlling the operation of the injectors, the control means now closed the injectors during a fraction of the engine start-up phase and allowing the injectors to open when the pressure in the injector manifold has reached a threshold value predetermined, the control means comprising means which reconstitute the value of the pressure at from an operating model incorporating engine operating parameters.
- the pressure in fuel inside the fuel system can be low due to prolonged shutdown or because it has been intentionally made weak to avoid leakage to injectors when stopped.
- the injectors send fuel into engine cylinders under the form a regular spray pattern.
- the injection is all the better as the fuel admitted in the injectors is high pressure.
- the object of the present invention is to remedy the aforementioned disadvantages in providing a circuit power supply which allows to establish, from the start, a optimal fuel pressure in the injectors when operation of these.
- a circuit of the aforementioned type is essentially characterized in that the threshold value is determined and modulated by the control means as a function of parameters engine operation such as temperature.
- the invention further relates to a motor for motor vehicle comprising a power supply circuit fuel as defined above and a starter whose features allow the engine to be driven at a sufficient speed to reach the value of fuel threshold pressure in a time interval reduced.
- the time interval is significantly less than or equal to one second
- the power circuit 1 shown in Figure 1 is intended to supply fuel to a combustion engine internal of a motor vehicle.
- This power circuit includes a high pressure injection pump 2 and a ramp 4 downstream of which are injectors 5.
- the pump 2 is supplied with fuel from a tank (not shown) by an inlet duct 3 in the direction of arrow F.
- Ramp 4 is supplied with high fuel pressure by an outlet pipe 6 connecting the pump 2 to the rail 4.
- the injectors 5 spray the fuel at the inside of engine cylinders (not shown) under the jet shape 8.
- injectors 5 are controlled by control means 7. These control means also control the high pressure pump operation 2.
- the high pressure injection pump 2 is by example a pump whose speed of rotation is linked to that of the engine with which it is associated.
- a starter known per se (not shown) drives the engine: the rotation speed of the pump is proportional to the speed of rotation of the engine.
- the fuel pressure delivered by the pump is then insufficient for proper functioning of the injectors 5.
- FIG. 2 shows that, during the engine starting phase, an operator actuates the starter at an instant t 1 , which drives the engine at a speed R d .
- the control means 7 keep the injectors 5 closed so that the injection of fuel into these injectors is prohibited.
- the fuel pressure delivered by this pump then increases continuously from time t 1 to time t 2 . This increase is relatively slow due to the phenomena of elasticity of the circuit and compressibility of the fuel.
- the pressure reaches a threshold value P s . This threshold value is considered sufficient to obtain good spraying of the fuel by the injectors 5.
- the control means 7 then authorize the opening of the injectors 5 at this instant t 2 .
- the injectors 5 are kept closed for a fraction of the start-up phase corresponding to the start of this phase.
- the good quality of the spray jet obtained by the present invention allows proper engine operation from the start, which reduces pollutant emissions.
- control means 7 comprise means for measuring, such as a sensor, the fuel pressure delivered into the rail 4 as well as means for comparison making it possible to compare the measured value with the threshold value stored in the control means 7.
- the measurement means reconstitute the pressure value from an operating model stored in the control means, this model incorporating engine operating parameters.
- the measuring means can be associated with the sensor.
- the threshold value at time t 2 is determined and modulated by the control means 7 as a function of other engine parameters such as, for example, the engine temperature.
- the engine has a positive ignition, it may also be advantageous not to order ignition as long as the injectors 5 are kept closed by the control means 7.
- the threshold pressure is generally reached in three or four engine revolutions.
- the starter used has mechanical characteristics making it possible to obtain the instant t 2 after a very short period, typically of the order of one second. .
- threshold pressure can still be determined either directly at the exit of high pressure pump, either at the injectors.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Fuel-Injection Apparatus (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9816446A FR2787832B1 (fr) | 1998-12-24 | 1998-12-24 | Circuit d'alimentation en carburant d'un moteur a combustion interne |
FR9816446 | 1998-12-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1013914A1 true EP1013914A1 (de) | 2000-06-28 |
EP1013914B1 EP1013914B1 (de) | 2003-07-09 |
Family
ID=9534510
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19990403253 Expired - Lifetime EP1013914B1 (de) | 1998-12-24 | 1999-12-22 | Krafstoffeinspritzanlage für eine Brennkraftmaschine |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1013914B1 (de) |
DE (1) | DE69909418T2 (de) |
ES (1) | ES2203035T3 (de) |
FR (1) | FR2787832B1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1321654A3 (de) * | 2001-12-18 | 2004-04-07 | Toyota Jidosha Kabushiki Kaisha | Hochdruckkraftstoffversorgungssystem für Brennkraftmaschine und Steuerungsmethode dafür |
EP2133540A1 (de) * | 2007-03-05 | 2009-12-16 | Yanmar Co., Ltd. | Kraftstoffeinspritzsteuervorrichtung für dieselmotor |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2991389A1 (fr) * | 2012-06-05 | 2013-12-06 | Peugeot Citroen Automobiles Sa | Procede de commande d'un moteur a combustion interne |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3304605A1 (de) * | 1982-02-12 | 1983-08-25 | Steyr Daimler Puch Ag | Kraftstoff-einspritzanlage fuer eine elektrische, ein startschloss umfassende anlasseinrichtung aufweisende kraftfahrzeug-dieselmotoren |
US4487188A (en) * | 1981-11-25 | 1984-12-11 | Nissan Motor Company, Limited | Fuel system for internal combustion engine |
JPS61207833A (ja) * | 1985-03-12 | 1986-09-16 | Yanmar Diesel Engine Co Ltd | 内燃機関の起動制御装置 |
JPH05302537A (ja) * | 1992-04-24 | 1993-11-16 | Nippondenso Co Ltd | コモンレール式燃料噴射装置 |
EP0779424A2 (de) * | 1995-12-15 | 1997-06-18 | NGK Spark Plug Co. Ltd. | Verfahren zur Steuerung des Anlassens einer Brennkraftmaschine und Vorrichtung zum Durchführen dieses Verfahrens |
JPH09222037A (ja) * | 1996-02-19 | 1997-08-26 | Nissan Motor Co Ltd | 筒内直接噴射式内燃機関の制御装置 |
-
1998
- 1998-12-24 FR FR9816446A patent/FR2787832B1/fr not_active Expired - Lifetime
-
1999
- 1999-12-22 ES ES99403253T patent/ES2203035T3/es not_active Expired - Lifetime
- 1999-12-22 DE DE1999609418 patent/DE69909418T2/de not_active Expired - Lifetime
- 1999-12-22 EP EP19990403253 patent/EP1013914B1/de not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4487188A (en) * | 1981-11-25 | 1984-12-11 | Nissan Motor Company, Limited | Fuel system for internal combustion engine |
DE3304605A1 (de) * | 1982-02-12 | 1983-08-25 | Steyr Daimler Puch Ag | Kraftstoff-einspritzanlage fuer eine elektrische, ein startschloss umfassende anlasseinrichtung aufweisende kraftfahrzeug-dieselmotoren |
JPS61207833A (ja) * | 1985-03-12 | 1986-09-16 | Yanmar Diesel Engine Co Ltd | 内燃機関の起動制御装置 |
JPH05302537A (ja) * | 1992-04-24 | 1993-11-16 | Nippondenso Co Ltd | コモンレール式燃料噴射装置 |
EP0779424A2 (de) * | 1995-12-15 | 1997-06-18 | NGK Spark Plug Co. Ltd. | Verfahren zur Steuerung des Anlassens einer Brennkraftmaschine und Vorrichtung zum Durchführen dieses Verfahrens |
JPH09222037A (ja) * | 1996-02-19 | 1997-08-26 | Nissan Motor Co Ltd | 筒内直接噴射式内燃機関の制御装置 |
Non-Patent Citations (3)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 011, no. 044 (M - 560) 10 February 1987 (1987-02-10) * |
PATENT ABSTRACTS OF JAPAN vol. 018, no. 104 (M - 1563) 21 February 1994 (1994-02-21) * |
PATENT ABSTRACTS OF JAPAN vol. 097, no. 012 25 December 1997 (1997-12-25) * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1321654A3 (de) * | 2001-12-18 | 2004-04-07 | Toyota Jidosha Kabushiki Kaisha | Hochdruckkraftstoffversorgungssystem für Brennkraftmaschine und Steuerungsmethode dafür |
US6761151B2 (en) | 2001-12-18 | 2004-07-13 | Toyota Jidosha Kabushiki Kaisha | High-pressure fuel supply system of an internal combustion engine and control method thereof |
EP2133540A1 (de) * | 2007-03-05 | 2009-12-16 | Yanmar Co., Ltd. | Kraftstoffeinspritzsteuervorrichtung für dieselmotor |
EP2133540A4 (de) * | 2007-03-05 | 2013-08-07 | Yanmar Co Ltd | Kraftstoffeinspritzsteuervorrichtung für dieselmotor |
Also Published As
Publication number | Publication date |
---|---|
EP1013914B1 (de) | 2003-07-09 |
DE69909418T2 (de) | 2004-04-22 |
DE69909418D1 (de) | 2003-08-14 |
ES2203035T3 (es) | 2004-04-01 |
FR2787832B1 (fr) | 2001-02-23 |
FR2787832A1 (fr) | 2000-06-30 |
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