EP1143141A1 - Verfahren zur Ansteuerung einer Kraftstoffpumpe - Google Patents
Verfahren zur Ansteuerung einer Kraftstoffpumpe Download PDFInfo
- Publication number
- EP1143141A1 EP1143141A1 EP01102207A EP01102207A EP1143141A1 EP 1143141 A1 EP1143141 A1 EP 1143141A1 EP 01102207 A EP01102207 A EP 01102207A EP 01102207 A EP01102207 A EP 01102207A EP 1143141 A1 EP1143141 A1 EP 1143141A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel pump
- starter
- fuel
- controlling
- pressure
- 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
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N99/00—Subject matter not provided for in other groups of this subclass
-
- 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
- F02D41/065—Introducing corrections for particular operating conditions for engine starting or warming up for starting at hot start or restart
-
- 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
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N11/0814—Circuits or control means specially adapted for starting of engines comprising means for controlling automatic idle-start-stop
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N2300/00—Control related aspects of engine starting
- F02N2300/20—Control related aspects of engine starting characterised by the control method
- F02N2300/2011—Control involving a delay; Control involving a waiting period before engine stop or engine start
Definitions
- the invention is based on a control method a fuel pump in an internal combustion engine according to the Genus of the main claim.
- the fuel is usually using a promoted electric fuel pump.
- the electric fuel pump comes with automatic start Driven by the control unit of the internal combustion engine or supplied with voltage.
- This quick control should ensure that there is enough pressure as soon as possible is built up in the fuel supply system so that fully functional during the start-up process Injections can be made.
- a fuel supply system with a lead in the Fuel pump is described, for example, in EP 0 679 220 B1.
- this well-known Fuel supply system will advance the duration of the Fuel pump made dependent on whether it is expected start of the internal combustion engine by one regular start or a start with Fuel filling, for example a start after an internal combustion engine that has been parked for a long time. If it is a restart, the lead time is Fuel pump extended.
- the method according to the invention for controlling a pump for example an electric fuel pump in the Fuel supply system of an internal combustion engine with the Features of claim 1 has the advantage that the pump is activated very early and reliably, even before the starter is actuated.
- the start condition, which causes the pump to switch on is clear and known before the starter turns and does not have to go out Consequences of the start can be determined and since the Pump before the starting current of the starter or starter caused voltage drop activated is, this can immediately with significantly higher delivery work.
- The can be particularly advantageous control of the electric fuel pump according to the invention an internal combustion engine with automatic start (control of the Starter using a control unit).
- the Delay in the energization of the starter is in advantageously depending on what already exists Fuel pressure, from the downtime of the Internal combustion engine or depending on whether previously a regular operation of the internal combustion engine and thus the Electric fuel pump has changed.
- An extension to this can be the delay in switching on of the starter or starter if the desired fuel pressure in the system not pending.
- the fuel pressure can either be a measured value or it will be used to estimate the other criteria such as the expected pressure Stop time of the EKP used.
- FIG. 1 shows a rough overview of the Fuel supply system of an internal combustion engine or an internal combustion engine including the means essential to the invention for detecting Operating states.
- a fuel supply system is known in principle from EP 0 679 220 B1.
- Figures 2 and 3 are two embodiments for inventive method for controlling a pump, inspesonders an electric fuel pump at a Internal combustion engine shown in a Fuel supply system according to Figure 1 can run.
- the invention is based on two Exemplary embodiments explained, which refer to a Fuel supply system with an internal combustion engine Obtain automatic start. In general, the invention however for each activation procedure for a pump with the help a microprocessor or a control device expand.
- FIG. 1 are those used to explain the in Figures 2 and 3 shown methods for controlling a Fuel pump components required Fuel supply system of an internal combustion engine shown schematically.
- 10 denotes the Control device, for example the control unit of a Motor vehicle.
- the control device 10 comprises at least one Microprocessor, which the control signals for the Dispenses fuel pump 11.
- the fuel pump 11 is there an electric fuel pump and driving the Electric fuel pump is made using the Electric fuel pump relay 12, one connection with the battery voltage terminal B + is connected.
- At closed current path of the electric fuel pump relay 12 is the battery voltage UB + at the voltage connection of the Fuel pump.
- the control device 10 are those of sensors or other measuring devices 13 to 18 information provided fed. As sensors or measuring devices, but not all must be present, are given: On Throttle valve sensor 13, a speed sensor 14, a Engine temperature sensor 17 and an air temperature sensor 18 and any other sensor 15 and one Voltage sensor 16, the voltage at the terminal Kl.15 measures and thus recognizes whether the start switch or Ignition switch Z is open or closed.
- the determined by the sensors or the voltmeter Data are supplied to the control device 10 and in this to control or regulate the internal combustion engine evaluated. Control signals are sent via output A submitted. Via output B, depending on supplied information or recognized operating parameters Control signals for the electric fuel pump relay 12 issued, via which the electric fuel pump 11 with Voltage is supplied. Time evaluations required run in the control device 10.
- the Fuel supply system is only shown schematically and provided with the reference number 19.
- step S1 The ignition is turned on in step S1 for example by checking the voltage at the terminal Kl.15 recognized. It is then initially in step S2 queried whether the fuel pump due to predetermined Criteria that require continuous operation of the pump already running. Such a criterion is, for example, that the engine turns. Is recognized that the pump is already running in continuous operation, step S1, that is Query ignition on repeated. In contrast, in step S2 not recognized that the pump is already in continuous operation, a query is made in step S3 as to whether the driver wants to start, whether there is a start request.
- step S2 If there is no start request, step S2 repeated. On the other hand, is the condition for one Start request is met, the fuel pump in the Step S4 activated immediately.
- the driver request that a Engine start is also used to control the Starter is used, however, in step S5 asked whether the starting delay for the starter has expired. This start-up delay for the starter is chosen so that the driver does not regard it as annoying is felt.
- the query S5 can therefore take some time to be won with the then already running Fuel pump the desired fuel system pressure build up. If it is recognized in step S5 that the Switch-on delay has expired, in step S6 Starter activated, i.e. powered.
- the Fuel pump (s) only through this once per driving cycle Condition is activated.
- the Fuel pump will also include all of the components above that Electric fuel pump relays are supplied with voltage, already supplied with voltage at this early stage because this time is before the time that the Starting the starter starts, the starting current is the Fuel pump and any other components Vehicle electrical system at a different, especially earlier point in time load than the much higher starting current of the Starter. Due to the temporal separation of these currents the maximum voltage drop is reduced.
- FIG. 3 shows a second method according to the invention shown, in the steps S1 to S6 following the example Figure 2 correspond and therefore no longer described here become.
- step S5 it is not only checked that whether the switch-on delay has expired, but alternatively, you can also query whether the System pressure has already been reached.
- step S5 will delay the Activation of the starter only triggered if certain conditions are met, which in step S8 be queried.
- step S8 can take place after the Detection ignition on in step S7 the shutdown time Electric fuel pump and / or the system pressure, i.e. the im Prevailing fuel system when switching on Fuel pressure determined.
- Determining the downtime can be carried out by the control unit, for example.
- the system pressure can be determined using an im Fuel supply system used pressure sensor respectively. The use of an observer for Pressure estimation would be conceivable.
- step S8 checks whether conditions exist that a Justify start-up delay for starter. To it is checked whether the shutdown time of the Electric fuel pump was longer than a selectable one Threshold and / or it is checked whether the system pressure has an acceptable value. If these conditions are not satisfied, it is checked with step S5 whether the Switch-on delay has already expired. Are against it meets the conditions of step S8, the starter becomes activated immediately.
- Fuel pre-pressure can either be a measured one Fuel pressure, for example in a BDE low pressure system be used or there will be others Criteria such as the shutdown time of the Electric fuel pump used for pressure estimation.
- the electric fuel pump can be switched off Fuel pressure can be concluded when the pressure drop is known as a system parameter when the engine is at a standstill.
- the switch-off time of the Electric fuel pump equal to the engine shutdown time or vehicle set. Each time the pump is activated the pump shutdown time restarted (a reset made) and when the electric fuel pump is inactive, time is running out counted. This will be in the case where the driver is not starts immediately after the signal terminal 15 and the Electric fuel pump flow runs regularly, the renewed Switch-off time of the EKP recorded after the pump flow.
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 (9)
- Verfahren zur Ansteuerung einer Pumpe, insbesondere einer elektrischen Kraftstoffpumpe bei einer Brennkraftmaschine, die mittels einer Ansteuereinrichtung betrieben wird, wobei die Ansteuereinrichtung auch mit dem Anlasser bzw. Starter in Verbindung steht, der eine rotierende Welle der Brennkraftmaschine im Startfall antreibt, dadurch gekennzeichnet, dass die Ansteuerung der Kraftstoffpumpe und damit ihre Stromversorgung unmittelbar nach Betätigen des Zündschalters bzw. Startschalters erfolgt und der Starter unter vorgebbaren Voraussetzungen erst nach einer vorgebbaren Verzögerungszeit angesteuert wird.
- Verfahren zur Ansteuerung einer Kraftstoffpumpe nach Anspruch 1, dadurch gekennzeichnet, dass die vorgebbaren Voraussetzungen von der Abstellzeit der Kraftstoffpumpe und/oder vom Kraftstoffdruck im System abhängen.
- Verfahren zur Ansteuerung einer Kraftstoffpumpe nach Anspruch 2, dadurch gekennzeichnet, dass keine Verzögerungszeit für die Ansteuerung des Anlassers berücksichtigt wird, sofern die letzte Abstellzeit der Kraftstoffpumpe länger war als ein Schwellwert und/oder falls der Kraftstoffdruck im System höher ist als ein weiterer Schwellwert.
- Verfahren zur Ansteuerung einer Kraftstoffpumpe nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass die vorgebbare Verzögerungszeit vom Druck im Kraftstoffversorgungssystem und/ oder von der Temperatur und/oder vom Starter und/oder vom Fahrerwunsch abhängt.
- Verfahren zur Ansteuerung einer Kraftstoffpumpe nach Anspruch 4, dadurch gekennzeichnet, dass der Kraftstoffdruck im System mittels eines Sensors gemessen oder durch Auswertung vorgebbarer Kriterien abgeschätzt wird.
- Verfahren zur Ansteuerung einer Kraftstoffpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass zur Abschätzung des Kraftstoffdrucks im System die Abstellzeit der Kraftstoffpumpe berücksichtigt wird.
- Verfahren zur Ansteuerung einer Kraftstoffpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, das zur Erkennung der Betätigung des Zündschalters das Signal von Klemme Kl.15 ausgewertet wird und die Erkennung der Betätigung des Starters in Abhängigkeit vom Signal an Klemme Kl.50 erfolgt.
- Verfahren zur Ansteuerung einer Kraftstoffpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Verzögerungszeit nur einmal pro Fahrzyklus aktiviert wird.
- Verfahren zur Ansteuerung einer Kraftstoffpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Ansteuereinrichtung das Motorsteuergerät ist, in dem die erforderlichen Berechnungen, Zeitmessungen und Signalauswertungen ablaufen und das die erforderlichen Ansteuersignale abgibt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10017426 | 2000-04-07 | ||
DE2000117426 DE10017426A1 (de) | 2000-04-07 | 2000-04-07 | Verfahren zur Ansteuerung einer Kraftstoffpumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1143141A1 true EP1143141A1 (de) | 2001-10-10 |
EP1143141B1 EP1143141B1 (de) | 2006-01-11 |
Family
ID=7637989
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20010102207 Expired - Lifetime EP1143141B1 (de) | 2000-04-07 | 2001-01-31 | Verfahren zur Ansteuerung einer Kraftstoffpumpe |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1143141B1 (de) |
DE (2) | DE10017426A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005000612A1 (de) * | 2005-01-03 | 2006-07-13 | Robert Bosch Gmbh | Verfahren zum Start einer Brennkraftmaschine |
WO2011088957A1 (de) * | 2010-01-22 | 2011-07-28 | Robert Bosch Gmbh | Kraftstoffeinspritzsystem und verfahren zum steuern einer kraftstoffpumpe |
Families Citing this family (2)
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 |
JP4320630B2 (ja) * | 2004-10-22 | 2009-08-26 | 株式会社デンソー | エンジン制御システム |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55114874A (en) * | 1979-02-26 | 1980-09-04 | Nissan Motor Co Ltd | Drive controller of fuel pump for internal combustion engine |
US4329951A (en) * | 1979-04-21 | 1982-05-18 | Lucas Industries Limited | Fuel injection system |
US5327872A (en) * | 1992-10-15 | 1994-07-12 | Fuji Jukogyo Kabushiki Kaisha | Fuel pressure control method for high pressure direct fuel injection engine |
EP0679220A1 (de) | 1993-10-21 | 1995-11-02 | Robert Bosch Gmbh | Verfahren zur befüllung des kraftstoffversorgungssystems bei einer brennkraftmaschine |
US5572964A (en) * | 1993-10-29 | 1996-11-12 | Regie Nationale Des Usines Renault | Control process for an internal combustion engine fuel pump |
-
2000
- 2000-04-07 DE DE2000117426 patent/DE10017426A1/de not_active Withdrawn
-
2001
- 2001-01-31 DE DE50108645T patent/DE50108645D1/de not_active Expired - Lifetime
- 2001-01-31 EP EP20010102207 patent/EP1143141B1/de not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55114874A (en) * | 1979-02-26 | 1980-09-04 | Nissan Motor Co Ltd | Drive controller of fuel pump for internal combustion engine |
US4329951A (en) * | 1979-04-21 | 1982-05-18 | Lucas Industries Limited | Fuel injection system |
US5327872A (en) * | 1992-10-15 | 1994-07-12 | Fuji Jukogyo Kabushiki Kaisha | Fuel pressure control method for high pressure direct fuel injection engine |
EP0679220A1 (de) | 1993-10-21 | 1995-11-02 | Robert Bosch Gmbh | Verfahren zur befüllung des kraftstoffversorgungssystems bei einer brennkraftmaschine |
US5572964A (en) * | 1993-10-29 | 1996-11-12 | Regie Nationale Des Usines Renault | Control process for an internal combustion engine fuel pump |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 004, no. 167 (M - 042) 19 November 1980 (1980-11-19) * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005000612A1 (de) * | 2005-01-03 | 2006-07-13 | Robert Bosch Gmbh | Verfahren zum Start einer Brennkraftmaschine |
WO2011088957A1 (de) * | 2010-01-22 | 2011-07-28 | Robert Bosch Gmbh | Kraftstoffeinspritzsystem und verfahren zum steuern einer kraftstoffpumpe |
Also Published As
Publication number | Publication date |
---|---|
DE50108645D1 (de) | 2006-04-06 |
DE10017426A1 (de) | 2001-10-11 |
EP1143141B1 (de) | 2006-01-11 |
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