EP0651152B1 - Procédé de commande d'une pompe à carburant de moteur à combustion interne - Google Patents
Procédé de commande d'une pompe à carburant de moteur à combustion interne Download PDFInfo
- Publication number
- EP0651152B1 EP0651152B1 EP94402379A EP94402379A EP0651152B1 EP 0651152 B1 EP0651152 B1 EP 0651152B1 EP 94402379 A EP94402379 A EP 94402379A EP 94402379 A EP94402379 A EP 94402379A EP 0651152 B1 EP0651152 B1 EP 0651152B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel pump
- time delay
- fuel
- delay period
- controlling
- 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
- 239000000446 fuel Substances 0.000 title claims description 75
- 238000000034 method Methods 0.000 title claims description 32
- 230000008569 process Effects 0.000 title claims description 25
- 238000002485 combustion reaction Methods 0.000 title claims description 9
- 230000001960 triggered effect Effects 0.000 claims description 3
- 230000000454 anti-cipatory effect Effects 0.000 claims 1
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 239000007858 starting material Substances 0.000 description 6
- 238000013475 authorization Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- F02D41/30—Controlling fuel injection
- F02D41/3082—Control of electrical fuel pumps
-
- 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
- F02M37/04—Feeding by means of driven pumps
- F02M37/08—Feeding by means of driven pumps electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0602—Fuel pressure
Definitions
- the present invention relates to a method control for driving the pump fuel from an internal combustion engine fitted including a motor vehicle.
- the current the invention relates more particularly to a method control intended to favor the setting under engine fuel system pressure before startup of the latter.
- Such a process is known from US-A-5,175,663.
- the supply circuit of a internal combustion conventionally includes a fuel supply system under pressure from a storage tank to the electro-injectors controlled by an electronic system of engine control which determines the amount of fuel to be injected according to the conditions of engine operation.
- injectors are supplied with fuel under a constant pressure, the amount of fuel injected then being determined by the duration opening times or injection times.
- the fuel system is therefore equipped an electric pump that delivers fuel to a given pressure whatever the regime of engine operation.
- the implementation of this pump is directly controlled by the electronic engine control system which determines the operating range of the so as to avoid any risk of accidental leakage of the fuel.
- the pump is only activated after starter drive and it is stopped as soon as the engine stops.
- This timeout is traditionally constant for a given motor and is relatively brief in the order of a few seconds, for security issues. Now it turns out that such timing is insufficient to ensure the setting fuel system pressure in certain circumstances and in particular when the fuel system is empty, which is the case at get out of the production lines.
- the object of the present invention is therefore to remove this drawback of the prior art by proposing a method of controlling the pump fuel from an internal combustion engine according to which the delay time is adapted in forecast of engine requirements.
- the method according to the invention is more particularly intended to control a pump fuel fitted to the fuel system with a motor vehicle internal combustion engine, the fuel pump being of the drive type electric and being controlled by the engine control.
- this control process consists of activate the fuel pump early when powering up the system engine control electronics for a period predetermined time delay.
- control method of the fuel pump is characterized in that the length of the delay period is adjusted according to predetermined criteria.
- the delay period is adjusted according to operating criteria predetermined motor values.
- the delay period is not adjusted only subject to a protocol authorization triggered by an operator.
- the delay period is adjusted according to fuel pressure prevailing in the fuel system.
- the delay period cannot take only two values, a first value normally used each time the power is turned on electronic engine control system, and a second value used only when predetermined circumstances, the first period time delay then being significantly longer shorter than the second delay period.
- the second timeout period or long time delay is more particularly intended to be used when the fuel is empty.
- the long time delay is more especially intended to be used before the engine does not start for the first time.
- the long time delay is used after the engine control system has detected the sending by an operator of a predetermined signal and on condition that the engine is never previously worked.
- the predetermined signal is defined by the foot-to-bottom position of the pedal accelerator.
- the engine is considered to have operated when it reached a speed of predetermined rotation.
- the fuel injection system for a internal combustion engine shown in figure 1 conventionally comprises a circuit 10 for supplying the fuel under pressure from the fuel tank fuel 4 to the electro-injectors 9.
- the electro-injectors 9 are controlled by a system engine control electronics 3 which determines the opening times of the different injectors and therefore the amount of fuel injected.
- the fuel supply system 10 includes a driven pump 5 electrically. Inside the pump 5, a safety valve prevents overpressure and outlet, a non-return valve prevents defusing from the circuit to the engine stop. Pump 5 sends fuel through a filter 6 and then into the injection rail 7 which communicates with the different injectors. Differential pressure injection, between the fuel supply circuit and the intake manifold is maintained constant, whatever the flow rate of the injectors 9, by the pressure regulator 8 which monitors the return flow to tank 4, fuel in excess.
- the engine control system 3 includes conventionally a calculator comprising a unit central or CPU, a random access memory or RAM, a ROM or ROM, converters analog-digital and different interfaces inputs and outputs.
- Engine control system 3 receives different input signals characteristic of the engine operation: load, speed, water temperature, manifold pressure, etc. performs operations and in turn generates output signals to organs directly controlled including injectors fuel 9 and fuel pump 5.
- the engine control system 3 therefore comprises, according to figure 2, an output 22 comprising a controlled switch such as a transistor 23, controlling the energization of a relay 24 connected to the + terminal of the battery vehicle through a connecting line 25 cooperating with a keyless contactor operated by the key to contact the vehicle (+ APC), to avoid any inadvertent starting of the fuel pump.
- a controlled switch such as a transistor 23
- controlling the energization of a relay 24 connected to the + terminal of the battery vehicle through a connecting line 25 cooperating with a keyless contactor operated by the key to contact the vehicle (+ APC), to avoid any inadvertent starting of the fuel pump.
- the triggering of relay 24 then operates the closure of line 28 directly connecting the battery (VBD) at fuel pump 3 and therefore the training of the latter.
- control system motor 3 controls the actuation of the fuel 5 in advance for a period called time delay, as soon as the ignition is on.
- the contact is determined either directly by recognizing the key transition "off” - “on” key or directly by placing motor control system voltage 3.
- the process of the fuel pump according to the invention therefore consists in adjusting this delay according to certain criteria predetermined.
- Figure 3 shows schematically an algorithm to adapt the timing when the engine is started for the first time while the vehicle it equips leaves the chain of mounting.
- control system motor has two timeout values predetermined: a Tl value of around 30 s only intended for the first start-up so that allow the pressurization of the fuel initially empty and a Tc value approx. 1 s for subsequent starts.
- timeout value long Tl by motor control system 3 is then determined by the combination of two criteria distinct: the absence of any functioning engine and recognition of a particular signal voluntarily caused by a operator and which is recognized by the engine control when it is switched on, by example the accelerator pedal in foot position background. This signal is identified either directly at from a potentiometer linked to the pedal acceleration, either indirectly from the full throttle position.
- the combination of the two criteria allows to use the long delay Tl with the maximum security.
- the time delay Tl is not triggered only by special manipulation defining an authorization protocol, which eliminates the risks of unexpected triggering which could lead to a long dry rotation of the fuel pump.
- the user vehicle cannot re-create the conditions for starting the long delay.
- the process consists first of all to come read the contents of a memory box FLAGDEM specific for computer 3 (memory not volatile EEPROM) which characterizes the fact that the engine has already run or not.
- This box memory initially at "0", is set to "1" as soon as the engine worked.
- To determine that the engine worked we can take for example as a criterion, the fact that it has turned above a given rotation speed (1000rpm), we assign the code "1" to this box.
- the strategy recognition of engine operation and update of the content of the FLAGDEM register is classic and was not figured.
- Reading the contents of the FLAGDEM register determines the timeout value. If the content is "1", then we systematically use the short time delay Tc. The transistor 23 is therefore closed for a period equal to Tc.
- the system of engine control then waits for the authorization protocol, so it waits for a given period of time receiving a predetermined signal, for example positioning full foot of the accelerator pedal.
- a predetermined signal for example positioning full foot of the accelerator pedal.
- PAPF position full load
- the method according to the invention therefore makes it possible to simple way, by simple modification of the program control unit 3 and without any specific device is required, use a Tl delay adapted to the first start, this which reduces the time of the first bet en route and therefore avoid overheating of the starter and battery wear. Once the vehicle started, the timer resumes Tc value which ensures operation especially on the engine.
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)
- High-Pressure Fuel Injection Pump Control (AREA)
Description
Claims (10)
- Procédé de commande d'une pompe à carburant (5) équipant le circuit de carburant (10) d'un moteur à combustion interne (1) de véhicule automobile, la pompe à carburant (5) étant du type à entraínement électrique et étant pilotée par le système de contrôle moteur (3), consistant à actionner la pompe à carburant (5) de façon anticipée lors de la mise sous tension du système électronique de contrôle moteur (3) pendant une période de temporisation prédéterminée (T), caractérisé en ce que la durée de la période de temporisation est ajustée en fonction de critères prédéterminés (PAPF).
- Procédé de commande d'une pompe à carburant (5) selon la revendication 1, caractérisé en ce que ladite période de temporisation (T) est ajustée suivant des critères de fonctionnement prédéterminés du moteur (1).
- Procédé de commande d'une pompe à carburant (5) selon la revendication 2, caractérisé en ce que ladite période de temporisation (T) n'est ajustée que sous réserve d'un protocole d'autorisation (PAPF) déclenché par un opérateur.
- Procédé de commande d'une pompe à carburant (5) selon la revendication 2, caractérisé en ce que ladite période de temporisation (T) est ajustée en fonction de la pression du carburant régnant dans le circuit de carburant.
- Procédé de commande d'une pompe à carburant (5) selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la période de temporisation (T) peut prendre deux valeurs, une première valeur (Tc) utilisée normalement à chaque mise sous tension du système électronique de contrôle moteur (3), et une seconde valeur (Tl) utilisée seulement lors de circonstances prédéterminées, la première période de temporisation (Tc) étant sensiblement plus courte que la seconde période de temporisation (Tl).
- Procédé de commande d'une pompe à carburant (5) selon la revendication 5, caractérisé en ce que la seconde période de temporisation (Tl) est plus particulièrement destinée à être utilisée lorsque le conduit de carburant (10) est vide.
- Procédé de commande d'une pompe à carburant (5) selon la revendication 6, caractérisé en ce que la seconde période de temporisation (Tl) est plus particulièrement destinée à être utilisée avant que le moteur (1) n'effectue son premier démarrage.
- Procédé de commande d'une pompe à carburant (5) selon la revendication 7, caractérisé en ce que ladite seconde période de temporisation (Tl) est utilisée après que le système de contrôle moteur (3) ait détecté l'envoi par un opérateur d'un signal prédéterminé (PAPF) et à la condition que le moteur (1) n'est jamais fonctionné auparavant.
- Procédé de commande d'une pompe à carburant (5) selon la revendication 8, caractérisé en ce que ledit signal prédéterminé est défini par la position pied à fond de la pédale d'accélérateur.
- Procédé de commande d'une pompe à carburant (5) selon l'une quelconque des revendications 8 à 9, caractérisé en ce que le moteur est considéré comme ayant fonctionné lorsqu'il a atteint une vitesse de rotation prédéterminée.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9312924A FR2711734B1 (fr) | 1993-10-29 | 1993-10-29 | Procédé de commande d'une pompe à carburant de moteur à combustion interne. |
FR9312924 | 1993-10-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0651152A1 EP0651152A1 (fr) | 1995-05-03 |
EP0651152B1 true EP0651152B1 (fr) | 1998-02-25 |
Family
ID=9452349
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94402379A Expired - Lifetime EP0651152B1 (fr) | 1993-10-29 | 1994-10-21 | Procédé de commande d'une pompe à carburant de moteur à combustion interne |
Country Status (6)
Country | Link |
---|---|
US (1) | US5572964A (fr) |
EP (1) | EP0651152B1 (fr) |
JP (1) | JPH07166992A (fr) |
DE (1) | DE69408625T2 (fr) |
ES (1) | ES2113064T3 (fr) |
FR (1) | FR2711734B1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19818421A1 (de) * | 1998-04-24 | 1999-10-28 | Bosch Gmbh Robert | Kraftstoffversorgungsanlage einer Brennkraftmaschine |
DE10214204A1 (de) * | 2002-03-28 | 2003-10-23 | Siemens Ag | Verfahren zum Verbessern des Wiederstartens einer Brennkraftmaschine mit Hochdruck-Speichereinspritzsystem |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AUPN139995A0 (en) * | 1995-02-27 | 1995-03-16 | Orbital Engine Company (Australia) Proprietary Limited | Improvements relating to internal combustion engines |
US6152107A (en) * | 1998-08-24 | 2000-11-28 | Caterpillar Inc. | Device for controlling fuel injection in cold engine temperatures |
DE19910331A1 (de) * | 1999-03-09 | 2000-09-14 | Bayerische Motoren Werke Ag | Verfahren zur Erstbefüllung eines Kraftstoffsystems |
DE19950232A1 (de) * | 1999-10-19 | 2001-04-26 | Bosch Gmbh Robert | Verfahren zur Kraftstoff-Erstbefüllung eines Kraftstoffversorgungssystems einer Brennkraftmaschine |
DE19961298A1 (de) * | 1999-12-18 | 2001-06-21 | Bosch Gmbh Robert | Verfahren zur Ansteuerung einer Kraftstoffpumpe |
DE10014550B4 (de) * | 2000-03-23 | 2005-05-19 | Daimlerchrysler Ag | Vorrichtung zur Steuerung einer Kraftstoffpumpe |
DE10017426A1 (de) * | 2000-04-07 | 2001-10-11 | Bosch Gmbh Robert | Verfahren zur Ansteuerung einer Kraftstoffpumpe |
DE10108181A1 (de) * | 2001-02-21 | 2002-08-29 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Korrektur eines Temperatursignals |
KR20020095663A (ko) * | 2001-06-15 | 2002-12-28 | 현대자동차주식회사 | 자동차 엔진의 최초 시동시 연료펌프 제어방법 |
DE10151513A1 (de) * | 2001-10-18 | 2003-05-22 | Bosch Gmbh Robert | Verfahren, Computerprogramm, Steuer- und Regelgerät zum Betreiben einer Brennkraftmaschine, sowie Brennkraftmaschine |
US7318414B2 (en) * | 2002-05-10 | 2008-01-15 | Tmc Company | Constant-speed multi-pressure fuel injection system for improved dynamic range in internal combustion engine |
US6908289B2 (en) * | 2002-05-31 | 2005-06-21 | Hydro-Aire, Inc. | Fuel pump with automatic shutoff |
DE10301236B4 (de) * | 2003-01-15 | 2017-08-17 | Robert Bosch Gmbh | Verfahren zum Starten einer Brennkraftmaschine, insbesondere einer Brennkraftmaschine mit Direkteinspritzung |
JP4045594B2 (ja) * | 2003-04-08 | 2008-02-13 | 株式会社デンソー | 蓄圧式燃料噴射装置 |
FR2864163B1 (fr) | 2003-12-18 | 2006-02-10 | Renault Sas | Procede d'amorcage d'une pompe a carburant |
KR100633885B1 (ko) * | 2004-03-05 | 2006-10-16 | 현대자동차주식회사 | 차량용 엔진의 실화방지 방법 |
DE102004024518A1 (de) * | 2004-05-18 | 2005-12-15 | Adam Opel Ag | Erststart eines Ottomotors mit Saugrohreinspritzung in einem Fahrzeug mit einem nicht entlüfteten Kraftstoffeinspritzsystem |
US7093576B2 (en) * | 2004-06-15 | 2006-08-22 | Ford Global Technologies, Llc | System and method to prime an electronic returnless fuel system during an engine start |
DE102005053406A1 (de) * | 2005-11-09 | 2007-05-10 | Robert Bosch Gmbh | Verfahren zur Erkennung eines drucklosen Kraftstoffsystems |
TW200839095A (en) * | 2006-12-01 | 2008-10-01 | Bajaj Auto Ltd | Method and control unit for controlling an engine pump |
US8151767B2 (en) * | 2007-08-08 | 2012-04-10 | Ford Global Technologies, Llc | Fuel control for direct injection fuel system |
CN101196151B (zh) * | 2007-09-29 | 2010-12-08 | 温州华润电机有限公司 | 带干簧油位传感器的燃油泵总成 |
US7832375B2 (en) * | 2008-11-06 | 2010-11-16 | Ford Global Technologies, Llc | Addressing fuel pressure uncertainty during startup of a direct injection engine |
JP5455548B2 (ja) * | 2009-10-20 | 2014-03-26 | 三菱重工業株式会社 | サブエンジン式冷凍装置のエンジン始動方法および装置 |
US9228516B2 (en) * | 2012-09-04 | 2016-01-05 | GM Global Technology Operations LLC | Fuel pump prime activated by door sensor |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1543434A (fr) * | 1967-09-13 | 1968-10-25 | Peugeot | Dispositif d'alimentation en carburant d'un moteur à injection |
FR2119239A5 (fr) * | 1970-12-24 | 1972-08-04 | Sopromi Soc Proc Modern Inject | |
GB1591783A (en) * | 1977-07-08 | 1981-06-24 | Allied Chem | Fuel injection system with means to inhibit injection below a determined pressure |
JPS58204957A (ja) * | 1982-05-25 | 1983-11-29 | Toyota Motor Corp | 電動式燃料ポンプの駆動制御装置 |
US5074272A (en) * | 1986-08-13 | 1991-12-24 | Ashland Oil, Inc. | Process and apparatus for reducing port fuel injector deposits |
JPH0778383B2 (ja) * | 1988-10-17 | 1995-08-23 | 日野自動車工業株式会社 | ディーゼルエンジンの燃料系統自動エア抜き装置 |
US5175663A (en) * | 1989-10-17 | 1992-12-29 | Jidosha Kiki Co., Ltd. | Fuel pump controller |
DE4016055A1 (de) * | 1990-05-18 | 1991-11-21 | Bosch Gmbh Robert | Kraftstoffversorgungssystem fuer eine brennkraftmaschine |
DE4136833A1 (de) * | 1991-11-08 | 1993-05-13 | Bayerische Motoren Werke Ag | Anordnung zur kraftstoff-versorgung einer brennkraftmaschine |
DE4229540C2 (de) * | 1992-09-04 | 2002-03-14 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine |
JPH06129322A (ja) * | 1992-10-15 | 1994-05-10 | Fuji Heavy Ind Ltd | 高圧噴射式エンジンの燃料圧力制御方法 |
JP2853504B2 (ja) * | 1993-03-16 | 1999-02-03 | 日産自動車株式会社 | 内燃機関の燃料噴射装置 |
-
1993
- 1993-10-29 FR FR9312924A patent/FR2711734B1/fr not_active Expired - Fee Related
-
1994
- 1994-10-21 ES ES94402379T patent/ES2113064T3/es not_active Expired - Lifetime
- 1994-10-21 EP EP94402379A patent/EP0651152B1/fr not_active Expired - Lifetime
- 1994-10-21 DE DE69408625T patent/DE69408625T2/de not_active Expired - Fee Related
- 1994-10-28 JP JP6265270A patent/JPH07166992A/ja active Pending
- 1994-10-31 US US08/332,407 patent/US5572964A/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19818421A1 (de) * | 1998-04-24 | 1999-10-28 | Bosch Gmbh Robert | Kraftstoffversorgungsanlage einer Brennkraftmaschine |
DE19818421B4 (de) * | 1998-04-24 | 2017-04-06 | Robert Bosch Gmbh | Kraftstoffversorgungsanlage einer Brennkraftmaschine |
DE10214204A1 (de) * | 2002-03-28 | 2003-10-23 | Siemens Ag | Verfahren zum Verbessern des Wiederstartens einer Brennkraftmaschine mit Hochdruck-Speichereinspritzsystem |
Also Published As
Publication number | Publication date |
---|---|
JPH07166992A (ja) | 1995-06-27 |
DE69408625D1 (de) | 1998-04-02 |
US5572964A (en) | 1996-11-12 |
EP0651152A1 (fr) | 1995-05-03 |
DE69408625T2 (de) | 1998-10-01 |
FR2711734A1 (fr) | 1995-05-05 |
ES2113064T3 (es) | 1998-04-16 |
FR2711734B1 (fr) | 1995-11-24 |
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