EP1242730A2 - Method for controlling a fuel pump - Google Patents
Method for controlling a fuel pumpInfo
- Publication number
- EP1242730A2 EP1242730A2 EP00993427A EP00993427A EP1242730A2 EP 1242730 A2 EP1242730 A2 EP 1242730A2 EP 00993427 A EP00993427 A EP 00993427A EP 00993427 A EP00993427 A EP 00993427A EP 1242730 A2 EP1242730 A2 EP 1242730A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- fuel pump
- controlling
- internal combustion
- combustion engine
- 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.)
- Withdrawn
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.
- a volume is specified for specifying the required amount of fuel.
- 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.
- 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.
- 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.
- 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 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
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19961298 | 1999-12-18 | ||
DE19961298A DE19961298A1 (en) | 1999-12-18 | 1999-12-18 | Method for controlling a fuel pump |
PCT/DE2000/004332 WO2001044637A2 (en) | 1999-12-18 | 2000-12-05 | Method for controlling a fuel pump |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1242730A2 true EP1242730A2 (en) | 2002-09-25 |
Family
ID=7933312
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00993427A Withdrawn EP1242730A2 (en) | 1999-12-18 | 2000-12-05 | Method for controlling a fuel pump |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1242730A2 (en) |
JP (1) | JP2003517135A (en) |
KR (1) | KR20020072552A (en) |
CN (1) | CN1434899A (en) |
DE (1) | DE19961298A1 (en) |
WO (1) | WO2001044637A2 (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10148646A1 (en) * | 2001-10-02 | 2003-04-10 | Bosch Gmbh Robert | Internal combustion engine controller has switch that drives fuel pump independently of main processor during main processor initializing process |
DE10151513A1 (en) | 2001-10-18 | 2003-05-22 | Bosch Gmbh Robert | Method, computer program, control and regulating device for operating an internal combustion engine, and internal combustion engine |
DE10160311C2 (en) * | 2001-12-07 | 2003-11-20 | Bosch Gmbh Robert | Method, computer program, control and regulating device for operating an internal combustion engine and internal combustion engine |
JP4046056B2 (en) * | 2003-09-22 | 2008-02-13 | いすゞ自動車株式会社 | diesel engine |
FR2864163B1 (en) * | 2003-12-18 | 2006-02-10 | Renault Sas | METHOD FOR STARTING A FUEL PUMP |
JP4297129B2 (en) | 2006-04-12 | 2009-07-15 | トヨタ自動車株式会社 | Start control device for internal combustion engine |
DE102007011018A1 (en) * | 2007-03-07 | 2008-09-11 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Method for operating a fuel pump |
CN102116206B (en) * | 2009-12-31 | 2013-09-11 | 十堰科纳汽车电器有限公司 | Oil pump controller and control method thereof |
DE102010027839A1 (en) * | 2010-04-16 | 2011-10-20 | Robert Bosch Gmbh | pump assembly |
DE102010028010A1 (en) * | 2010-04-21 | 2011-10-27 | Robert Bosch Gmbh | Method for operating a fuel delivery device |
CN102797576A (en) * | 2012-08-09 | 2012-11-28 | 中国南方航空工业(集团)有限公司 | Method and device for controlling oil filling during startup of piston engine |
CN104514651B (en) * | 2013-09-29 | 2018-05-11 | 联合汽车电子有限公司 | More gear fuel oil pump control systems and its implementation method |
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 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT380540B (en) * | 1982-02-12 | 1986-06-10 | Steyr Daimler Puch Ag | FUEL INJECTION SYSTEM FOR AN ELECTRICAL ENGINE, INCLUDING A STARTER LOCK, WITH DIESEL ENGINES |
JP2845005B2 (en) * | 1992-02-07 | 1999-01-13 | トヨタ自動車株式会社 | Fuel pump control device |
DE4335891A1 (en) | 1993-10-21 | 1995-04-27 | Bosch Gmbh Robert | Method for filling the fuel supply system in an internal combustion engine |
FR2711734B1 (en) * | 1993-10-29 | 1995-11-24 | Renault | Method of controlling an internal combustion engine fuel pump. |
DE4401083A1 (en) * | 1994-01-15 | 1995-07-20 | Daimler Benz Ag | Fuel injection unit for IC engine |
DE4443879B4 (en) * | 1994-12-09 | 2006-12-14 | Robert Bosch Gmbh | Device and method for supplying fuel to an internal combustion engine |
-
1999
- 1999-12-18 DE DE19961298A patent/DE19961298A1/en not_active Withdrawn
-
2000
- 2000-12-05 KR KR1020027007737A patent/KR20020072552A/en not_active Application Discontinuation
- 2000-12-05 CN CN00819079A patent/CN1434899A/en active Pending
- 2000-12-05 JP JP2001545703A patent/JP2003517135A/en active Pending
- 2000-12-05 EP EP00993427A patent/EP1242730A2/en not_active Withdrawn
- 2000-12-05 WO PCT/DE2000/004332 patent/WO2001044637A2/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO0144637A2 * |
Also Published As
Publication number | Publication date |
---|---|
DE19961298A1 (en) | 2001-06-21 |
CN1434899A (en) | 2003-08-06 |
JP2003517135A (en) | 2003-05-20 |
WO2001044637A2 (en) | 2001-06-21 |
WO2001044637A3 (en) | 2002-05-10 |
KR20020072552A (en) | 2002-09-16 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: SAMENFINK, WOLFGANG Inventor name: GRASS, GERD Inventor name: WEISS, RUEDIGER |
|
17P | Request for examination filed |
Effective date: 20021111 |
|
RBV | Designated contracting states (corrected) |
Designated state(s): BE DE ES FR GB IT |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20040701 |