WO2001044637A2 - Verfahren zur ansteuerung einer kraftstoffpumpe - Google Patents
Verfahren zur ansteuerung einer kraftstoffpumpe Download PDFInfo
- Publication number
- WO2001044637A2 WO2001044637A2 PCT/DE2000/004332 DE0004332W WO0144637A2 WO 2001044637 A2 WO2001044637 A2 WO 2001044637A2 DE 0004332 W DE0004332 W DE 0004332W WO 0144637 A2 WO0144637 A2 WO 0144637A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fuel
- fuel pump
- controlling
- internal combustion
- combustion engine
- Prior art date
Links
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
- F02D41/02—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
- 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
- F02D41/042—Introducing corrections for particular operating conditions for stopping the engine
Definitions
- the invention relates to a method for controlling a fuel pump in an internal combustion engine according to the preamble of the main claim.
- the fuel is usually delivered using an electric fuel pump.
- the electric fuel pump is controlled or supplied with voltage with the aid of the control unit of the internal combustion engine.
- the fuel pump runs as long as the control unit detects that the start switch is actuated. If the internal combustion engine has started, the pump remains switched on, but the control unit recognizes that the internal combustion engine has not yet been started up or that an inadmissible operating state exists, a safety circuit is activated which prevents the delivery of fuel when the ignition is switched on and the internal combustion engine is stopped. This ensures that, for example, the delivery of fuel is quickly stopped after an accident. Since it is necessary for a sufficient fuel pressure to be immediately available when the internal combustion engine is started, there are fuel supply systems in which the fuel pump is advanced, the fuel pump being supplied with voltage before the internal combustion engine starts up. Such one
- Fuel supply system with flow is described, for example, in the publication EP 0 679 220 B1.
- This known fuel supply system carries out a preliminary run of the fuel pump, in which a distinction is also made as to whether the expected start of the internal combustion engine is a regular start or a start with fuel fill, for example a first start or a start after a long shutdown of the internal combustion engine or after a repair in the fuel supply system. If it is recognized that there is a refill, the duration of the advance of the fuel pump is extended compared to a normal start.
- the activation time of the electric fuel pump is selected as a criterion for the amount of fuel to be delivered. The longer this activation time, the more fuel is delivered in the lead of the fuel pump.
- the method according to the invention for controlling a fuel pump has the advantage over the known method that the fuel volume serves as a relevant criterion for the fuel pump control.
- the fuel volume serves as a relevant criterion for the fuel pump control.
- the amount of fuel to be delivered in advance is regulated as a function of time criteria, a further improvement in accuracy can be achieved while ensuring that not too much fuel is delivered.
- a volume is specified for specifying the required amount of fuel.
- the amount of fuel that is required in normal fuel pump flow to build up pressure before starting is significantly less than in conventional systems. If the after-running of the internal combustion engine is terminated regularly, the control unit still carries out all the necessary tasks correctly, and advantageously only a small amount of fuel has to be delivered before the next start to build up pressure alone. If the stop time is known and plausible to the second, the fuel volume delivered will be before next start determined as a function of the shutdown time. In this way, the decrease in pressure in the fuel supply system can advantageously be taken into account during a shutdown phase in the fuel pump advance. By taking the shutdown time into account, the pump flow can advantageously be matched even more precisely to the needs of the system.
- the actual delivery rate of the pump can be calculated depending on the supply voltage and the back pressure if necessary.
- the required quantity or quantity of fuel or fuel mass is used as the relevant quantity for determining the control signals for the fuel pump instead of the volume.
- 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.
- a fuel supply system is already known from EP 0 679 220 B1.
- FIG. 2 shows an exemplary embodiment of a method according to the invention for controlling a fuel pump, which can run in a fuel supply system according to FIG. 1. description
- the invention is explained using an exemplary embodiment which relates to a fuel supply system in an internal combustion engine.
- the invention can be extended for each control method for a pump with the aid of a microprocessor or a control device, provided that the microprocessor controls the pump to deliver a quantity of liquid in such a way that the volume to be delivered is taken into account in the control and control is volume-dependent.
- FIG. 1 schematically shows the components of a fuel supply system of an internal combustion engine that are required to explain the method for controlling a fuel pump that runs in FIG.
- the control device for example the control device of a motor vehicle, is designated by 10. This
- Control device 10 comprises at least one microprocessor which emits the control signals for the fuel pump 11.
- the fuel pump 11 is an electric fuel pump and the electric fuel pump is controlled with the aid of the electric fuel pump relay 12, one connection of which is connected to the battery voltage terminal B +.
- the battery voltage UB + is at the voltage connection of the electric fuel pump.
- the fuel supply system 19 is only shown schematically.
- the control device 10 is supplied with the information supplied by sensors or other measuring means 13 to 18.
- sensors or other measuring means 13 to 18 The following are specified as sensors or measuring means, but not necessarily all of them are present: on Throttle valve sensor 13, which measures the angle of the throttle valve as ⁇ DK, a speed sensor 14, which determines the speed n, an engine temperature sensor 17 and an output air temperature 18 and any other sensor 15 and a voltmeter 16, which measures the voltage at the
- Terminal 15 measures and thus recognizes whether the ignition switch Z is open or closed.
- the data determined by the sensors or the voltmeter are fed to the control device 10 and evaluated in the latter for controlling or regulating the internal combustion engine, for example the ignition and / or injection. Control signals are emitted via output A.
- the control device 10 supplies control signals for the electric fuel pump relay 12 at an output B as a function of supplied information or recognized operating parameters, which relay connects or disconnects the electric fuel pump 11 to the voltage UB +.
- the necessary time measurements also take place, which are required when the control signals for the electric fuel pump are formed.
- the method according to the invention for controlling a fuel pump, in particular during the fuel pump advance, is shown in detail in FIG. 2.
- the purpose of the fuel pump advance is to ensure that sufficient fuel is available for the injection in good time, regardless of whether it is a first start or a further start.
- step SO the ignition is switched on, that is Operation of terminal Kl.15 checked. "Ignition on” can be verified, for example, by checking the door contact or another characteristic event. If it was recognized in step S1 that the ignition was not switched on, the program is ended with step 2a. If it was recognized in step S1 that the Ignition is switched on, it is first queried in step S2 whether the fuel pump is already running on the basis of criteria that require continuous operation of the pump, that is to say whether the criterion B-Ekpd (condition of electric fuel pump in
- Such a criterion is e.g. that the drive shaft of the internal combustion engine or the motor is already rotating.
- step S1 continuous operation remains activated until it is recognized in step S1 that the ignition is no longer activated. If, on the other hand, it is recognized in step S2 that there is no continuous operation of the electric fuel pump, a check is carried out in step S3 as to whether a fuel pump advance is requested and permitted before the engine is started in order to build up the desired fuel pressure (electric fuel pump advance condition fulfilled). If this is not the case, step S1 again asks whether the ignition is switched on. It could also be assumed that the fuel pump is already running in continuous operation and the method would then continue with step S2.
- the following variables can serve as criteria for the requirement of a fuel pump feed (condition of electric fuel pump feed fulfilled):
- Control unit of the internal combustion engine usually in any case and can therefore be processed without further effort.
- step S4 If it is recognized in step S3 that it is necessary to advance the fuel pump, it is checked in step S4 whether this is an initial filling, i.e. to fill up after emptying the
- Initial filling can also be triggered by a workshop tester. If it is recognized that this is an initial filling, the value for the maximum quantity of fuel to be conveyed is loaded with the corresponding target value VKSTEBF in step S5 as the target fuel volume vkstsol that has to be delivered.
- step S6 checks whether the exact shutdown time or the exact shutdown time of the internal combustion engine is known. Then, if the shutdown time is known to the second, in step S7 the
- the necessary delivery volume can be determined from the compressibility of the fuel and the expansion of the fuel supply system (Rail volume) can be determined, which can also be taken into account if the parking time is known.
- step S6 If it is recognized in step S6 that the exact shutdown time is not known and the pressure is also not exactly known, the fuel volume to be delivered can also be determined from the compressibility and the expansion of the rail volume, it then being assumed that the system filled, but is depressurized (ambient pressure). In step S8, what is to be funded in advance is then
- the fuel pump can be controlled to fill the fuel using a so-called workshop tester. This is possible at any time if the ignition is switched on (terminal 15 on) and the fuel pump 11 is not already running due to other requirements, that is, if the fuel pump 11 is not already in continuous operation.
- the maximum fuel quantity vkstsol to be pumped then becomes the value as in step S5
- VKSTEBF set. This value results from the volume of the fuel rail minus the delivery volume for a normal pump flow. Even with the initial start, a normal pump flow runs immediately when the ignition is switched on.
- step S9 The above-mentioned steps in the flow chart according to FIG. 2 each lead to a target fuel volume that is to be conveyed in the fuel pump flow so that an optimal commissioning of the internal combustion engine is guaranteed in accordance with the present conditions.
- the check as to whether the delivered fuel volume VKST is still smaller than the target value vkstsol takes place in step S9. If this is not the case, step S1 is started again and a check is carried out to determine whether the ignition is switched on. Alternatively, step S2 could also be continued and checked whether the fuel pump 11 is already running in continuous operation.
- step S9 If it is recognized in step S9 that the delivered volume vkst is smaller than the target volume vkstsol, the system switches to
- the amount of fuel vkst already required is determined in a first approach using a simple model from a constant assumed delivery rate.
- the model can be expanded to include the most important influencing factor, battery voltage, in terms of pump speed and modeled or measured system pressure.
- the amount of fuel delivered could be determined from the electrical fuel pump output with a corresponding effort or measured with the aid of a sensor.
- the fuel volume is used as a relevant criterion for the fuel pump control.
- volume values of the exemplary embodiment according to FIG. 2 can then simply be replaced by corresponding mass or quantity values.
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)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001545703A JP2003517135A (ja) | 1999-12-18 | 2000-12-05 | 燃料ポンプの制御のための方法 |
EP00993427A EP1242730A2 (de) | 1999-12-18 | 2000-12-05 | Verfahren zur ansteuerung einer kraftstoffpumpe |
KR1020027007737A KR20020072552A (ko) | 1999-12-18 | 2000-12-05 | 연료 펌프 제어 방법 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19961298A DE19961298A1 (de) | 1999-12-18 | 1999-12-18 | Verfahren zur Ansteuerung einer Kraftstoffpumpe |
DE19961298.6 | 1999-12-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2001044637A2 true WO2001044637A2 (de) | 2001-06-21 |
WO2001044637A3 WO2001044637A3 (de) | 2002-05-10 |
Family
ID=7933312
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2000/004332 WO2001044637A2 (de) | 1999-12-18 | 2000-12-05 | Verfahren zur ansteuerung einer kraftstoffpumpe |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1242730A2 (de) |
JP (1) | JP2003517135A (de) |
KR (1) | KR20020072552A (de) |
CN (1) | CN1434899A (de) |
DE (1) | DE19961298A1 (de) |
WO (1) | WO2001044637A2 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2864163A1 (fr) * | 2003-12-18 | 2005-06-24 | Renault Sas | Procede d'amorcage d'une pompe a carburant |
WO2007116304A1 (en) * | 2006-04-12 | 2007-10-18 | Toyota Jidosha Kabushiki Kaisha | Start-up control device and start-up control method for internal combustion engine |
WO2011128163A1 (de) * | 2010-04-16 | 2011-10-20 | Robert Bosch Gmbh | Pumpenanordnung |
WO2011131485A1 (de) * | 2010-04-21 | 2011-10-27 | Robert Bosch Gmbh | Verfahren zum betreiben einer kraftstofffördereinrichtung |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10148646A1 (de) * | 2001-10-02 | 2003-04-10 | Bosch Gmbh Robert | Brennkraftmaschinensteuerung sowie Verfahren zum Betrieb einer Brennkraftmaschinensteuerung |
DE10151513A1 (de) | 2001-10-18 | 2003-05-22 | Bosch Gmbh Robert | Verfahren, Computerprogramm, Steuer- und Regelgerät zum Betreiben einer Brennkraftmaschine, sowie Brennkraftmaschine |
DE10160311C2 (de) * | 2001-12-07 | 2003-11-20 | Bosch Gmbh Robert | Verfahren, Computerprogramm, Steuer- und Regelgerät zum Betreiben einer Brennkraftmaschine sowie Brennkraftmaschine |
JP4046056B2 (ja) * | 2003-09-22 | 2008-02-13 | いすゞ自動車株式会社 | ディーゼルエンジン |
DE102007011018A1 (de) * | 2007-03-07 | 2008-09-11 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Verfahren zum Betreiben einer Kraftstoffpumpe |
CN102116206B (zh) * | 2009-12-31 | 2013-09-11 | 十堰科纳汽车电器有限公司 | 一种油泵控制器及其控制方法 |
CN102797576A (zh) * | 2012-08-09 | 2012-11-28 | 中国南方航空工业(集团)有限公司 | 一种活塞发动机的起动注油控制方法及装置 |
CN104514651B (zh) * | 2013-09-29 | 2018-05-11 | 联合汽车电子有限公司 | 多挡位燃油泵控制***及其实现方法 |
US9835102B2 (en) | 2014-11-14 | 2017-12-05 | Hyundai Motor Company | Method for controlling vehicle fuel pump |
US9683511B2 (en) * | 2015-05-14 | 2017-06-20 | Ford Global Technologies, Llc | Method and system for supplying fuel to an engine |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0679220B1 (de) | 1993-10-21 | 1998-06-10 | Robert Bosch Gmbh | Verfahren zur befüllung des kraftstoffversorgungssystems bei einer brennkraftmaschine |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT380540B (de) * | 1982-02-12 | 1986-06-10 | Steyr Daimler Puch Ag | Kraftstoffeinspritzanlage fuer eine elektrische, ein startschloss umfassende anlasseinrichtung aufweisende kraftfahrzeug-dieselmotoren |
JP2845005B2 (ja) * | 1992-02-07 | 1999-01-13 | トヨタ自動車株式会社 | 燃料ポンプの制御装置 |
FR2711734B1 (fr) * | 1993-10-29 | 1995-11-24 | Renault | Procédé de commande d'une pompe à carburant de moteur à combustion interne. |
DE4401083A1 (de) * | 1994-01-15 | 1995-07-20 | Daimler Benz Ag | Für eine Brennkraftmaschine vorgesehene Kraftstoffeinspritzanlage |
DE4443879B4 (de) * | 1994-12-09 | 2006-12-14 | Robert Bosch Gmbh | Einrichtung und Verfahren zur Kraftstoffversorgung bei einer Brennkraftmaschine |
-
1999
- 1999-12-18 DE DE19961298A patent/DE19961298A1/de not_active Withdrawn
-
2000
- 2000-12-05 EP EP00993427A patent/EP1242730A2/de not_active Withdrawn
- 2000-12-05 JP JP2001545703A patent/JP2003517135A/ja active Pending
- 2000-12-05 KR KR1020027007737A patent/KR20020072552A/ko not_active Application Discontinuation
- 2000-12-05 WO PCT/DE2000/004332 patent/WO2001044637A2/de not_active Application Discontinuation
- 2000-12-05 CN CN00819079A patent/CN1434899A/zh active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0679220B1 (de) | 1993-10-21 | 1998-06-10 | Robert Bosch Gmbh | Verfahren zur befüllung des kraftstoffversorgungssystems bei einer brennkraftmaschine |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2864163A1 (fr) * | 2003-12-18 | 2005-06-24 | Renault Sas | Procede d'amorcage d'une pompe a carburant |
WO2007116304A1 (en) * | 2006-04-12 | 2007-10-18 | Toyota Jidosha Kabushiki Kaisha | Start-up control device and start-up control method for internal combustion engine |
US7934490B2 (en) | 2006-04-12 | 2011-05-03 | Toyota Jidosha Kabushiki Kaisha | Start-up control device and start-up control method for internal combustion engine |
WO2011128163A1 (de) * | 2010-04-16 | 2011-10-20 | Robert Bosch Gmbh | Pumpenanordnung |
WO2011131485A1 (de) * | 2010-04-21 | 2011-10-27 | Robert Bosch Gmbh | Verfahren zum betreiben einer kraftstofffördereinrichtung |
Also Published As
Publication number | Publication date |
---|---|
KR20020072552A (ko) | 2002-09-16 |
EP1242730A2 (de) | 2002-09-25 |
CN1434899A (zh) | 2003-08-06 |
DE19961298A1 (de) | 2001-06-21 |
JP2003517135A (ja) | 2003-05-20 |
WO2001044637A3 (de) | 2002-05-10 |
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