EP0679220A1 - Verfahren zur befüllung des kraftstoffversorgungssystems bei einer brennkraftmaschine - Google Patents
Verfahren zur befüllung des kraftstoffversorgungssystems bei einer brennkraftmaschineInfo
- Publication number
- EP0679220A1 EP0679220A1 EP94928299A EP94928299A EP0679220A1 EP 0679220 A1 EP0679220 A1 EP 0679220A1 EP 94928299 A EP94928299 A EP 94928299A EP 94928299 A EP94928299 A EP 94928299A EP 0679220 A1 EP0679220 A1 EP 0679220A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- control
- filling
- combustion engine
- fuel pump
- 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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000000446 fuel Substances 0.000 claims abstract description 53
- 230000007704 transition Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract 1
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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 according to the preamble of the main claim.
- the electric fuel pump is usually controlled using the kilfe of the control unit.
- the fuel pump runs as long as the control unit detects that the start switch is actuated. If the engine has started, the pump remains switched on.
- a safety circuit prevents fuel being pumped when the ignition is switched on and the engine is not running, for example after an accident.
- the fuel circuit of the internal combustion engine After a repair or after installing an injection system in a motor vehicle, the fuel circuit of the internal combustion engine must be refilled. This filling should take place without starting the internal combustion engine in order to prevent catalytic converter damage from lean combustion at the start of the internal combustion engine running.
- prolonged operation of the fuel pump without starting the internal combustion engine or running internal combustion engine should be avoided, so that in the event of an accident the escape of large amounts of fuel, for example from burst fuel lines, is avoided, such operation must be prevented.
- such an operating restriction is selected so that accidents, for example due to unconnected fuel lines after repairs to the fuel circuit, are prevented when the ignition is switched on.
- the object of the invention is to implement these two contradictory requirements of a desired long pump lead time for filling the circuit and a short pump lead time in normal operation, without requiring complex intervention in the control system of the internal combustion engine.
- the inventive method with the features of claim 1 has the advantage that a reliable filling of the fuel circuit of the internal combustion engine is achieved without the need to start the internal combustion engine. It is further ensured that a short lead time of the fuel pump is obtained when the internal combustion engine starts normally, and at the same time it is ensured that fuel delivery is stopped quickly in the event of an accident, so that an unwanted leakage of fuel is avoided.
- control device which controls the electric fuel pump, recognizes from measured variables such as the speed of the internal combustion engine, throttle valve angle, position of the ignition switch, whether there is a normal start or whether the fuel supply system of the internal combustion engine is to be filled.
- a query is made as to whether the engine and outlet air temperatures are approximately the same and in a certain range (e.g. 20 ... 30 ° C).
- control device advantageously realizes either a normal electric fuel pump control or a time control of the electric fuel pump.
- This time control can be terminated by the control unit in a particularly advantageous manner when predeterminable conditions occur, and a transition to normal electric fuel pump control can take place.
- FIG. 1 shows a rough overview of the fuel supply system of an internal combustion engine, including the means essential to the invention for detecting operating states.
- FIG. 2 shows a voltage-time diagram for various signals. Description of the embodiment
- control device for example the control device of a motor vehicle, is designated by 10.
- This control unit 10 also controls the electric fuel pump 11, this control being carried out with the aid of the electric fuel pump relay 12, one connection of which is connected to the battery voltage terminal B +.
- a throttle valve sensor 13 which measures the angle of the throttle valve ⁇ DK
- a speed sensor 14 an additional engine temperature sensor 17 and an output air temperature sensor 13
- any other sensor 15 and a voltmeter 16 which measures the voltage at terminal Kl.15 and thus detects whether the Zür.cschalter Z is open or closed.
- the data determined by the sensors or the voltmeter are fed to the control unit 10 and evaluated therein for the control or regulation of the internal combustion engine, for example the ignition or injection, the signals are output by the control unit 10 at the output A. Furthermore, the control unit 10 supplies control signals for the relay 12 at an output B as a function of the information supplied or the operating parameters detected, which relay energizes or disconnects the electric fuel pump 11.
- the signals which are essential for understanding the invention are plotted in FIG. These signals are voltage curves over time t.
- the signal at the terminal is shown in detail Kl.15, which is a measure of whether the ignition switch is on or off. This signal is denoted by S1.
- S2 denotes the output signal of the throttle valve sensor 13. It is low if the throttle valve angle ⁇ DK is below a limit angle and high if it is above it.
- the speed signal S3 is low until the start of the internal combustion engine at the time ts and the signal S4, which represents the control signal for the electric fuel pump 12, which is output by the control unit 10, is low when the electric fuel pump is switched off and high when the fuel pump is switched on.
- the signal curves shown in FIG. 2 result when the control unit has recognized that the system is being filled with fuel.
- the electric fuel pump time control then runs first, which takes place between t1 and t3 in the example according to FIG. 2.
- the transition to normal EKP control then takes place, the individual transition criteria being described in more detail below.
- tl denotes the beginning of the deflection of the throttle valve.
- the ignition switch Z is closed at the time t2, and at the same time the electric fuel pump relay 12 is closed for the first time.
- engine temperature TMCT can be set approximately equal to the intake air temperature TANS. There must still be an initial start detection and then voltage applied to terminal Kl.15. It only runs if all of these conditions are met
- a further criterion for the start of the time control can be that it is recognized whether the throttle valve angle becomes zero after a predeterminable period of time after the fuel pump advance.
- a refinement of this procedure can be achieved in that the driver has to completely close the throttle valve and then open it again after the first pump advance so that a filling request is recognized.
- the signal curve of S2 then resulting is indicated by dashed lines, the time period during which the throttle valve is closed is denoted by ⁇ t4.
- Noise from the fuel pump makes it easy for the mechanic to assign the throttle valve movement in the workshop or on the floor. Under certain conditions, e.g. when the engine speed becomes greater than zero, when the throttle valve angle becomes less than 80 ° or when the voltage at terminal 15 drops, i.e. when the ignition switch Z is opened, the transition to normal electric fuel pump control or switch-off takes place the EKP.
- the signals S1 or S2 can possibly go low prematurely, this leads to the termination of the EKP time control, the signal curves are shown in dashed lines, the associated termination conditions denoted Ab1 or Ab2.
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)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4335891 | 1993-10-21 | ||
DE4335891A DE4335891A1 (de) | 1993-10-21 | 1993-10-21 | Verfahren zur Befüllung des Kraftstoffversorgungssystems bei einer Brennkraftmaschine |
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 true EP0679220A1 (de) | 1995-11-02 |
EP0679220B1 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 |
---|---|---|---|---|
EP1143141A1 (de) | 2000-04-07 | 2001-10-10 | Robert Bosch Gmbh | Verfahren zur Ansteuerung einer Kraftstoffpumpe |
US8155861B2 (en) | 2007-10-22 | 2012-04-10 | Robert Bosch Gmbh | Method for controlling a fuel supply system of an internal combustion engine |
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 |
DE19961298A1 (de) | 1999-12-18 | 2001-06-21 | 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 WO PCT/DE1994/001194 patent/WO1995011378A1/de active IP Right Grant
- 1994-10-12 CN CN94190759A patent/CN1048538C/zh not_active Expired - Fee Related
- 1994-10-12 JP JP7511168A patent/JPH08505201A/ja active Pending
- 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 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 US US08/446,681 patent/US5513614A/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9511378A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1143141A1 (de) | 2000-04-07 | 2001-10-10 | Robert Bosch Gmbh | Verfahren zur Ansteuerung einer Kraftstoffpumpe |
US8155861B2 (en) | 2007-10-22 | 2012-04-10 | Robert Bosch Gmbh | Method for controlling a fuel supply system of an internal combustion engine |
Also Published As
Publication number | Publication date |
---|---|
DE59406217D1 (de) | 1998-07-16 |
DE4335891A1 (de) | 1995-04-27 |
EP0679220B1 (de) | 1998-06-10 |
JPH08505201A (ja) | 1996-06-04 |
WO1995011378A1 (de) | 1995-04-27 |
BR9405645A (pt) | 1999-09-08 |
KR950704604A (ko) | 1995-11-20 |
KR100340824B1 (ko) | 2002-12-16 |
CN1048538C (zh) | 2000-01-19 |
RU2138665C1 (ru) | 1999-09-27 |
CN1115186A (zh) | 1996-01-17 |
US5513614A (en) | 1996-05-07 |
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