EP0679220B1 - Verfahren zur befüllung des kraftstoffversorgungssystems bei einer brennkraftmaschine - Google Patents
Verfahren zur befüllung des kraftstoffversorgungssystems bei einer brennkraftmaschine Download PDFInfo
- Publication number
- EP0679220B1 EP0679220B1 EP94928299A EP94928299A EP0679220B1 EP 0679220 B1 EP0679220 B1 EP 0679220B1 EP 94928299 A EP94928299 A EP 94928299A EP 94928299 A EP94928299 A EP 94928299A EP 0679220 B1 EP0679220 B1 EP 0679220B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filling
- fuel pump
- recognized
- combustion engine
- internal combustion
- 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
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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
-
- 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
- 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
- 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
- F02M2037/085—Electric circuits therefor
Definitions
- the invention is based on a method for filling the fuel supply system in an internal combustion engine of the type of the main claim.
- the electric fuel pump In fuel supply systems of internal combustion engines, the electric fuel pump usually with the help of the control unit controlled. When starting, the fuel pump runs as long as that Control unit recognizes that the start switch is actuated. Is the Engine started, the pump remains switched on. A safety circuit avoids fuel delivery when the engine is on Ignition and engine stopped, for example after an accident.
- the fuel circuit of the internal combustion engine be refilled. This filling should start without the Internal combustion engine take care of catalyst damage due to lean combustion to prevent at the beginning of the run of the internal combustion engine.
- the object of the invention is to contradict these two per se Requirements for an intentional long pump lead time for circuit filling and a short pump lead time in normal operation to realize without a complex intervention in the Control system of the internal combustion engine is required.
- the inventive method with the features of claim 1 the advantage that a reliable filling of the fuel circuit the internal combustion engine is achieved without a start Internal combustion engine is required. It is also ensured that with a normal start of the engine a short Lead time of the fuel pump is obtained and at the same time ensures that fuel is delivered quickly in the event of an accident is stopped so that unwanted fuel leakage is avoided becomes.
- Control of the electric fuel pump performs, as defined in claim 1, from the measured Sizes: engine speed, throttle valve angle, Position of the ignition switch detects whether a normal start is present or the fuel supply system is filled Internal combustion engine should take place.
- control device In dependence on this detection is advantageously from the control device either a normal electric fuel pump control realized or a time control of the electric fuel pump. This timing can be particularly advantageous aborted by the control unit if specified conditions occur and there can be a transition to normal electric fuel pump control respectively.
- FIG. 1 shows one rough overview of the fuel supply system of an internal combustion engine including the means essential to the invention Acquisition of operating conditions.
- Figure 2 is a voltage-time diagram shown for different signals.
- FIG. 1 are the components necessary to explain the invention of a fuel supply system of an internal combustion engine shown schematically.
- 10 is the control device, for example, the control unit of a motor vehicle.
- This control unit 10 also controls the Electric fuel pump 11, this control using the Electro fuel pump relay 12, one of which is connected the battery voltage terminal B + is connected.
- the control unit uses sensors or other measuring equipment supplied information supplied. As sensors or measuring devices, but not necessarily all of them are given: A throttle valve sensor 13, the angle of the throttle valve ⁇ DK measures a speed sensor 14, additionally an engine temperature sensor 17 and an outlet air temperature sensor 18, any other Sensor 15 and a voltmeter 16, the voltage at the terminal K1.15 measures and thus recognizes whether the ignition switch Z is open or closed is.
- control unit 10 The data determined by the sensors or the voltmeter are supplied to the control unit 10 and in it for control or Regulation of the internal combustion engine, for example the ignition or Injection evaluated, the signals from the control unit 10 on Output A delivered. Control unit 10 also delivers on one Output B depending on the information supplied or recognized Operating parameters control signals for the relay 12, the the electric fuel pump 11 energizes or from this separates.
- FIG. 2 are the signals necessary for understanding the invention are essential. These signals are voltage profiles over time t.
- the signal at the terminal is shown in detail K1.15, which is a measure of whether the ignition switch is on or off is. This signal is designated S1.
- S2 denotes that Throttle position sensor output signal 13. It is low when the Throttle valve angle ⁇ DK is below a limit angle and high if he is above it.
- the speed signal S3 is low until the engine starts at time ts and signal S4, which is the drive signal for the Electric fuel pump 12, which is output by the control unit 10, is low with the electric fuel pump and off high when the fuel pump is switched on.
- Another criterion for the start of time control can be found in it lie that it is recognized whether the throttle valve angle is equal to zero is after a predeterminable period of time after the fuel pump advance.
- This procedure can be refined by that the driver has the throttle valve after the first pump advance once completely close and open again, so that a filling request is recognized.
- the resulting signal curve from S2 is indicated by dashed lines, the period of time during which the throttle valve is closed, is denoted by ⁇ t4.
- control unit recognizes that no filling is required is, but that normal operation should not take place EKP time control initiated, but normal operation is running from which a pump flow for a period of approx. expires a second, but the next activation of the EKP only after detected speed increase at t3.
- the signals S1 or S2 can possibly go low early, this leads to the termination of the EKP time control, the signal profiles are shown in dashed lines, the associated termination conditions with Ab1 and Ab2 respectively.
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)
- Combined Controls Of Internal Combustion Engines (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Description
Claims (10)
- Verfahren zur Befüllung des Kraftstoffversorgungssystems bei einer Brennkraftmaschine mit einer Kraftstoffpumpe, die mittels einer Steuereinrichtung betrieben wird und mit Mitteln zur Erfassung von Betriebszuständen der Brennkraftmaschine, die entsprechende Ausgangssignale abgeben, insbesondere bezüglich der Stellung der Drosselklappen, des Zündschalters oder der Drehzahl, dadurch gekennzeichnet, daß bei der Ansteuerung der Kraftstoffpumpe unterschieden wird zwischen Normalstart und Befüllung des Kraftstoffversorgungssystems, wobei die Unterscheidung von der Steuereinrichtung in Abhängigkeit von den erfaßten Betriebszuständen erfolgt und Befüllung erkannt wird, wenn wenigstens folgende Bedingungen erfüllt sind: die Drehzahl ist Null, der Drosselklappenwinkel ist größer als ein vorgebbarer Wert bevor der Zündschalter geschlossen wird und es wird auf Urstart erkannt.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Steuereinrichtung das Steuergerät der Brennkraftmaschine ist.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Drosselklappenwinkel und die Stellung des Zündschaltes durch Überprüfung, ob die zugehörigen Signale high oder low sind, erkannt wird.
- Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß weitere Betriebsparameter die Motor- und/oder die Lufttemperatur sind.
- Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß die Motor- und/oder die Lufttemperatur in einem definierten Bereich liegen müssen, um eine gewünschte Befüllung des Systems mit Kraftstoff zu erkennen.
- Verfahren nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß bei der Erkennung des Urstarts der Verlauf der Ausgangssignale der Mittel zur Erfassung der Stellung der Drosselklappe und des Zündschalters über der Zeit ausgewertet wird.
- Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß bei erkanntem Befüllungswunsch eine Elektrokraftstoffpumpenzeitsteuerung aktiviert wird, die vor dem Start der Brennkraftmaschine die Kraftstoffpumpe für eine vorgebbare Zeitspanne zusätzlich ansteuert.
- Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß bei Erkennung, daß die Drehzahl größer Null wird vom Steuergerät ein Übergang in die normale Elektrokraftstoffpumpenansteuerung eingeleitet wird.
- Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß das Steuergerät bei Erkennung, daß die Spannung UK1.15 an der Klemme K1.15, die dem Zündschalter zugeordnet ist, low wird oder daß der Drosselklappenwinkel αDK kleiner als ein vorgebbarer Schwellwert wird, vom Steuergerät SG die Elektrokraftstoffpumpen Zeitsteuerung beendet wird.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß nach einmal erkannter Systembefüllung eine weitere Systembefüllung unterbunden wird, so daß keine weitere Elektrokraftstoffpumpen Zeitsteuerung aktiviert wird.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4335891A DE4335891A1 (de) | 1993-10-21 | 1993-10-21 | Verfahren zur Befüllung des Kraftstoffversorgungssystems bei einer Brennkraftmaschine |
DE4335891 | 1993-10-21 | ||
PCT/DE1994/001194 WO1995011378A1 (de) | 1993-10-21 | 1994-10-12 | Verfahren zur befüllung des kraftstoffversorgungssystems bei einer brennkraftmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0679220A1 EP0679220A1 (de) | 1995-11-02 |
EP0679220B1 true EP0679220B1 (de) | 1998-06-10 |
Family
ID=6500655
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94928299A Expired - Lifetime EP0679220B1 (de) | 1993-10-21 | 1994-10-12 | Verfahren zur befüllung des kraftstoffversorgungssystems bei einer brennkraftmaschine |
Country Status (9)
Country | Link |
---|---|
US (1) | US5513614A (de) |
EP (1) | EP0679220B1 (de) |
JP (1) | JPH08505201A (de) |
KR (1) | KR100340824B1 (de) |
CN (1) | CN1048538C (de) |
BR (1) | BR9405645A (de) |
DE (2) | DE4335891A1 (de) |
RU (1) | RU2138665C1 (de) |
WO (1) | WO1995011378A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001044637A2 (de) | 1999-12-18 | 2001-06-21 | Robert Bosch Gmbh | Verfahren zur ansteuerung einer kraftstoffpumpe |
DE102007050304A1 (de) | 2007-10-22 | 2009-04-23 | Robert Bosch Gmbh | Verfahren zur Steuerung eines Kraftstoffversorgungssystems einer Brennkraftmaschine |
Families Citing this family (14)
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 |
JPH109075A (ja) * | 1996-06-20 | 1998-01-13 | Hitachi Ltd | 燃料供給装置及びこれを用いた内燃機関及び自動車 |
DE19644497B4 (de) * | 1996-10-25 | 2005-09-08 | Robert Bosch Gmbh | Verfahren zur Steuerung einer Brennkraftmaschine mit einer Kraftstoffpumpe |
DE19801187B4 (de) * | 1998-01-15 | 2007-07-12 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine |
DE19946792A1 (de) * | 1998-09-29 | 2000-05-04 | Bosch Gmbh Robert | Verfahren zur Ansteuerung einer Kraftstoffpumpe |
DE10017426A1 (de) | 2000-04-07 | 2001-10-11 | Bosch Gmbh Robert | Verfahren zur Ansteuerung einer Kraftstoffpumpe |
US6950702B2 (en) * | 2002-07-15 | 2005-09-27 | Cardiac Pacemakers, Inc. | Use of curvature based features for beat detection |
US6817343B1 (en) * | 2003-04-23 | 2004-11-16 | Caterpillar Inc. | Electronic control system for fuel system priming |
JP4506527B2 (ja) * | 2005-03-18 | 2010-07-21 | トヨタ自動車株式会社 | 内燃機関の制御装置 |
US7509945B2 (en) * | 2006-03-15 | 2009-03-31 | Chrysler Llc | Fuel pump speed control system |
JP4297129B2 (ja) | 2006-04-12 | 2009-07-15 | トヨタ自動車株式会社 | 内燃機関の始動制御装置 |
JP4179333B2 (ja) | 2006-04-12 | 2008-11-12 | トヨタ自動車株式会社 | 内燃機関の始動制御装置 |
DE102006029633B4 (de) * | 2006-06-28 | 2019-05-09 | Robert Bosch Gmbh | Verfahren zum Betreiben eines Kraftstoffsystems einer Brennkraftmaschine |
DE102008016396B4 (de) * | 2008-03-29 | 2017-11-23 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Verfahren und Steuergerät zur Steuerung eines Erststarts eines Verbrennungsmotors |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2119239A5 (de) * | 1970-12-24 | 1972-08-04 | Sopromi Soc Proc Modern Inject | |
JPS56124636A (en) * | 1980-03-05 | 1981-09-30 | Hitachi Ltd | Controlling method of start of engine at low temperature |
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 |
JPS6114440A (ja) * | 1984-06-29 | 1986-01-22 | Fujitsu Ten Ltd | 電子制御燃料噴射装置 |
US5044344A (en) * | 1989-10-16 | 1991-09-03 | Walbro Corporation | Pressure-responsive fuel delivery system |
US5175663A (en) * | 1989-10-17 | 1992-12-29 | Jidosha Kiki Co., Ltd. | Fuel pump controller |
US5179922A (en) * | 1990-11-15 | 1993-01-19 | Proprietary Technology, Inc. | Apparatus for determining change of fuel flow |
JP2520145Y2 (ja) * | 1991-02-20 | 1996-12-11 | 自動車機器株式会社 | 燃料ポンプ制御回路 |
JP2586428B2 (ja) * | 1991-04-24 | 1997-02-26 | 株式会社デンソー | 燃料ポンプの制御装置 |
DE4133558A1 (de) * | 1991-10-10 | 1993-04-15 | Bosch Gmbh Robert | Steuersystem fuer die elektrische kraftstoffpumpe einer brennkraftmaschine |
US5179920A (en) * | 1992-03-12 | 1993-01-19 | Navistar International Transportation Corp. | Circuit for automatic shut-down of electronically controlled diesel engine |
US5291578A (en) * | 1992-06-15 | 1994-03-01 | First Switch, Inc. | Apparatus for controlling a vehicle fuel pump |
-
1993
- 1993-10-21 DE DE4335891A patent/DE4335891A1/de not_active Withdrawn
-
1994
- 1994-10-12 US US08/446,681 patent/US5513614A/en not_active Expired - Fee Related
- 1994-10-12 RU RU95112531/06A patent/RU2138665C1/ru not_active IP Right Cessation
- 1994-10-12 BR BR9405645-5A patent/BR9405645A/pt not_active IP Right Cessation
- 1994-10-12 WO PCT/DE1994/001194 patent/WO1995011378A1/de active IP Right Grant
- 1994-10-12 JP JP7511168A patent/JPH08505201A/ja active Pending
- 1994-10-12 EP EP94928299A patent/EP0679220B1/de not_active Expired - Lifetime
- 1994-10-12 KR KR1019950702545A patent/KR100340824B1/ko not_active IP Right Cessation
- 1994-10-12 DE DE59406217T patent/DE59406217D1/de not_active Expired - Fee Related
- 1994-10-12 CN CN94190759A patent/CN1048538C/zh not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001044637A2 (de) | 1999-12-18 | 2001-06-21 | Robert Bosch Gmbh | Verfahren zur ansteuerung einer kraftstoffpumpe |
DE102007050304A1 (de) | 2007-10-22 | 2009-04-23 | Robert Bosch Gmbh | Verfahren zur Steuerung eines Kraftstoffversorgungssystems einer Brennkraftmaschine |
Also Published As
Publication number | Publication date |
---|---|
KR950704604A (ko) | 1995-11-20 |
EP0679220A1 (de) | 1995-11-02 |
US5513614A (en) | 1996-05-07 |
WO1995011378A1 (de) | 1995-04-27 |
CN1115186A (zh) | 1996-01-17 |
BR9405645A (pt) | 1999-09-08 |
RU2138665C1 (ru) | 1999-09-27 |
JPH08505201A (ja) | 1996-06-04 |
CN1048538C (zh) | 2000-01-19 |
DE4335891A1 (de) | 1995-04-27 |
DE59406217D1 (de) | 1998-07-16 |
KR100340824B1 (ko) | 2002-12-16 |
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