EP1154142A2 - Verfahren und Vorrichtung zur Steuerung der Kraftstoffeinspritzung - Google Patents
Verfahren und Vorrichtung zur Steuerung der Kraftstoffeinspritzung Download PDFInfo
- Publication number
- EP1154142A2 EP1154142A2 EP01107985A EP01107985A EP1154142A2 EP 1154142 A2 EP1154142 A2 EP 1154142A2 EP 01107985 A EP01107985 A EP 01107985A EP 01107985 A EP01107985 A EP 01107985A EP 1154142 A2 EP1154142 A2 EP 1154142A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- internal combustion
- combustion engine
- fuel
- solenoid valve
- speed
- 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
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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
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/3809—Common rail control systems
- F02D41/3836—Controlling the fuel pressure
-
- 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
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
-
- 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
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
- F02D2041/2003—Output circuits, e.g. for controlling currents in command coils using means for creating a boost voltage, i.e. generation or use of a voltage higher than the battery voltage, e.g. to speed up injector opening
- F02D2041/2006—Output circuits, e.g. for controlling currents in command coils using means for creating a boost voltage, i.e. generation or use of a voltage higher than the battery voltage, e.g. to speed up injector opening by using a boost capacitor
-
- 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
- F02D2200/50—Input parameters for engine control said parameters being related to the vehicle or its components
- F02D2200/503—Battery correction, i.e. corrections as a function of the state of the battery, its output or its type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2250/00—Engine control related to specific problems or objectives
- F02D2250/31—Control of the fuel pressure
Definitions
- the invention relates to a method for control of fuel injection into an internal combustion engine according to the preamble of claim 1 and a Device for controlling fuel injection in an internal combustion engine according to the preamble of claim 7.
- a method and device for control of fuel injection into an internal combustion engine are known.
- the fuel injection takes place by means of at least one solenoid valve that Controllable by a control unit via an output stage is.
- an energy supply device in particular the on-board battery of a motor vehicle is provided.
- the energy supply can be via an electrical Charge storage element.
- the solenoid valve is preferably powered alternately from the energy supply device and the element.
- the element that as Capacitor can exist, is via the electromagnetic Solenoid valve consumers again loaded.
- the control of the solenoid valve during the opening time depends on at least an operating parameter. This can, for example the speed of the internal combustion engine.
- a disadvantage of the known method or in the known device is that it is in certain operating situations of the internal combustion engine to an uncontrolled fuel injection can come, causing the internal combustion engine could be damaged.
- the invention draws is particularly characterized by the fact that depending at least one operating parameter of the internal combustion engine the fuel supply pressure below one predeterminable operating value is reduced.
- Recharging the electric charge storing Element is done by driving the electromagnetic Consumer of the solenoid valve, however, the charging current is selected so that the solenoid valve does not open yet.
- the charging current is selected so that the solenoid valve does not open yet.
- the fuel supply pressure below the specifiable Operating value is reduced. That is, the fuel supply pressure is reduced below a value that for the working point or the Operating situation of the internal combustion engine actually would be necessary.
- the charging current for the element is set or selected in this way that it is within the permissible evaluation range of the Control unit of the fuel injection is located.
- An embodiment is particularly preferred, where the operating parameter for the reduction the fuel supply pressure the voltage level the energy supply device.
- the maximum permissible charging current is set. Nevertheless, by reducing the fuel supply pressure prevents the solenoid valve opens uncontrolled when reloading the element.
- One embodiment is particularly preferred, in addition to the evaluation of the voltage level the energy supply facility of the Fuel supply pressure depending on the Engine speed is reduced. Especially at low engine speeds can therefore the fuel supply pressure be increased, reloading the item plays a subordinate role as a very fast reloading is not absolutely necessary is. The charging current can thus be reduced, so that the necessary for the start of the internal combustion engine Fuel supply pressure provided can be.
- the opening control duration of the solenoid valve By the shortened opening control duration of the solenoid valve To realize the opening period in particular depending on the speed of the internal combustion engine set. At very high speeds is the time window for fuel injection dimensioned relatively short because of the high speed the crankshaft of the internal combustion engine Piston position where fuel is injected can only be available for a short period of time. With the limitation of the amount of fuel respectively the opening drive duration is thus prevents fuel against the cylinder wall splashes and therefore no longer burn cleanly could lead to engine damage.
- the Fuel quantity depending on the reduced Fuel supply pressure and the speed of the Internal combustion engine set.
- the amount of fuel the voltage level of the energy supply device and the speed of the internal combustion engine to limit.
- the following is purely exemplary of one Internal combustion engine with four cylinders. Of course, lower or higher numbers of cylinders possible. Every cylinder is at least assigned a solenoid valve.
- the internal combustion engine is in particular self-igniting, whereby the fuel supply preferably by means of so-called common rail technology can be done.
- Figure 1 shows a device 1 for controlling the fuel injection into an internal combustion engine, not shown here.
- the device 1 comprises a control unit 2, which controls a power output stage 3, which in each case switches the consumer current I V (FIG. 2) from electromagnetic consumers 4 from solenoid valves 5.
- the solenoid valves 5 are used to inject fuel into the cylinders of the internal combustion engine.
- a pump 6 For fuel supply and fuel delivery a pump 6 is provided, which consists of a Fuel tank 7 in a common supply line 8 promotes to which each of the solenoid valves 5th connected.
- a Pressure setting means 9 provided in the supply line 8 can be arranged and over the Control unit 2 according to the desired fuel supply pressure controllable and adjustable is.
- the pressure setting means 9 can for example, a pressure reducer or Act pressure relief device. Alternatively or in addition, the pump power can also vary become.
- the electromagnetic consumers 4 are on the one hand via an energy supply device 10 supplyable, in particular the on-board battery of the Motor vehicle is. Also, the electromagnetic ones Consumer 4 through an electric charge storing element 11 available, in particular is designed as a capacitor 12. The energy supply the electromagnetic consumer 4 is preferably carried out alternately from the energy supply device 10 and the electric charge storage element 11.
- the element 11 is charged via the charging circuit 13 via the electromagnetic consumers 4.
- the electromagnetic consumer 4 is charged with a charging current I L (FIG. 2) which is below a maximum permissible opening current at which the solenoid valve 5 would open and inject fuel into the combustion chamber of the internal combustion engine.
- a control cycle for one of the electromagnetic consumers 4 during an injection process is described below with reference to FIG. 2.
- the electromagnetic consumer 4 is supplied with electrical energy from the element 11.
- the voltage U C of the capacitor 12 is significantly higher than the voltage U BAT of the energy supply device 10 and can be, for example, 70 volts.
- This high voltage U C results in a large and rapid current change during the switch-on phase E, in which the consumer current I V increases to the tightening value I A in order to be able to open the solenoid valve 5 quickly.
- the energy supply to the consumer takes place via the energy supply device 10.
- the consumer current I V is reduced during the tightening phase A by opening and closing the output stage 3 and raised again to the value I A , that is to say regulated.
- a first quick-extinguishing phase S is activated, in which the consumer current I V is reduced to the holding value I H.
- the rapid extinguishing phase S the energy stored in the electromagnetic consumer 4 is fed back into the element 11.
- the rapid extinguishing phase S is followed by a holding phase H, during which the consumer current I V is essentially kept constant at the holding value I H by switching the output stage 3 on and off.
- the output stage 3 is blocked.
- a subsequent second quick-extinguishing phase S substantially reduces the consumer current I V to zero.
- the energy stored in the consumer 4 is in turn stored back in the element 11.
- the element 11 does not have the same state of charge as at the start of the switch-on phase E. It may therefore be necessary to fully charge element 11 again.
- the consumer 4 is charged with a charging current I L during a charging phase L, which, however, is selected such that the solenoid valve 5 does not open.
- the charging current I L is switched on and off during the charging phase L until the desired state of charge of the element 11 is reached, that is to say the desired capacitor voltage U C is present.
- the charging phase L must be selected to be sufficiently short so that the element 11 can emit sufficient electrical charge when another consumer 4 is actuated .
- an attempt will therefore be made to select the charging current I L as high as possible.
- the voltage level of the energy supply device 10 has dropped below its target value, the current rise takes place more slowly during the charging phase L. The loading time would increase.
- a very high charging current I V is selected at the same time in order to require as few charging sub-cycles Z as possible during the charging phase L, there is a risk that the solenoid valve 5 will open, although no fuel injection should take place. To prevent this, it is now advantageously provided to reduce the fuel supply pressure in the supply line 8.
- the device 1 has a first evaluation device 14, to which the speed n and the magnitude of the voltage U BAT of the energy supply device 10 are supplied as input variables.
- the speed signal n can also reproduce the speed of the internal combustion engine averaged over a time interval.
- the first evaluation device 14 selects from a characteristic field the value for the fuel supply pressure, to which the pressure setting means can be used to reduce.
- the pressure setting means 9 is controlled accordingly via the control unit 2 in order to be able to set the reduced fuel supply pressure in the supply line 8.
- a second evaluation device 15 determines the maximum permissible opening control duration for the solenoid valve 5 from a characteristic field as a function of the rotational speed n of the internal combustion engine and the voltage level U BAT of the energy supply device 10. This prevents fuel from being injected into the internal combustion engine beyond a predetermined crankshaft rotation angle.
- the control unit 2 thus limits the opening duration of the solenoid valve 5 as a function of the value determined by the second evaluation device 15. This means that the duration of the tightening phase A and the holding phase H for this operating situation of the internal combustion engine are limited to a maximum permissible value.
- the holding and / or tightening phase can therefore be shorter than that shown in the diagram in FIG. 2.
- the first and second evaluation devices 14 and 15 recognize this.
- the control unit 2 is thus again informed that normal operating conditions or parameters are present and the fuel supply pressure has returned to the setpoint for the Working point or load state of the internal combustion engine can be raised and the opening duration limitation of the solenoid valve 5 can be canceled again.
- the target fuel supply pressure in the supply line 8 can thus be set again by correspondingly controlling the pressure setting means 9.
- the exemplary embodiment according to FIG. 3 of a device 1 differs from the exemplary embodiment according to FIG. 1 only in that the second evaluation device 15 now has the speed n of the internal combustion engine and the fuel supply pressure in line 8 as input parameters.
- a size converter can be provided for this, which converts the mechanical variable "pressure" into a corresponding electrical variable.
- the quantity limitation in the fuel injection is now controlled as a function of the engine speed n and the fuel supply pressure. When the voltage U BAT of the energy supply device 10 is low, the fuel supply pressure in the supply line 8 is reduced.
- the second evaluation circuit 15 selects the maximum possible opening time of the solenoid valve 5 from the characteristic curve field depending on this pressure and the speed n and communicates this value to the control device 2, so that a maximum possible opening time of the solenoid valve 5 is not exceeded.
- the fuel quantity limitation is also achieved.
- the second evaluation device 15 can additionally have an evaluation input for the battery voltage U BAT .
- the first evaluation device 14 controls the second evaluation device 15 accordingly.
- the first evaluation device 14 could output a reset signal to the second evaluation unit 15 (shown in dashed lines) so that the latter cancels the fuel quantity limitation, that is to say the limited opening control duration of the solenoid valve 5.
- the Control unit 2 If the fuel supply pressure is as above mentioned- reduced, this is considered an error by the Control unit 2 recognized. A corresponding message or display to the user of the motor vehicle can be spent.
- the error detection is also necessary because of the reduced Fuel supply pressure, the exhaust behavior, in particular the exhaust gas composition, the internal combustion engine can be changed.
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)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
- Figur 1
- ein erstes Ausführungsbeispiel einer Vorrichtung zur Steuerung der Kraftstoffeinspritzung,
- Figur 2
- über der Zeit den Verbraucherstrom eines elektromagnetischen Verbrauchers und
- Figur 3
- ein zweites Ausführungsbeispiel einer Vorrichtung zur Steuerung der Kraftstoffeinspritzung.
Claims (11)
- Verfahren zur Steuerung der Kraftstoffeinspritzung in eine Brennkraftmaschine mittels zumindest eines Magnetventils, das aus einer Energieversorgungseinrichtung und einem elektrische Ladung speichernden Element versorgbar ist, das über den elektromagnetischen Verbraucher des Magnetventils nachladbar ist, wobei zumindest ein Betriebsparameter der Brennkraftmaschine erfasst wird, dadurch gekennzeichnet, dass in Abhängigkeit des zumindest einen Betriebsparameters der Brennkraftmaschine der Kraftstoffversorgungsdruck unter einen vorgebbaren Betriebswert reduziert wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der Kraftstoffversorgungsdruck in Abhängigkeit der Spannungshöhe (UBAT) der Energieversorgungseinrichtung (10) und vorzugsweise der Drehzahl (n) der Brennkraftmaschine reduziert wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Kraftstoffmenge bei der Kraftstoffeinspritzung in Abhängigkeit eines Betriebsparameters der Brennkraftmaschine gegenüber einer der aktuellen Betriebssituation der Brennkraftmaschine zugeordneten Soll-Kraftstoffmenge reduziert wird.
- Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass die Kraftstoffmenge in Abhängigkeit der Drehzahl (n) der Brennkraftmaschine und vorzugsweise des reduzierten Kraftstoffversorgungsdruckes begrenzt wird.
- Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass die Kraftstoffmenge in Abhängigkeit der Spannungshöhe (UBAT) der Energieversorgungseinrichtung (10) und vorzugsweise der Drehzahl (n) der Brennkraftmaschine begrenzt wird.
- Verfahren nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, dass die Begrenzung der Kraftstoffmenge über eine verkürzte Öffnungs-Ansteuerdauer des Magnetventils (5) erreicht wird.
- Vorrichtung zur Steuerung der Kraftstoffeinspritzung in eine Brennkraftmaschine mittels zumindest eines Magnetventils, das aus einer Energieversorgungseinrichtung und einem elektrische Ladung speichernden Element versorgbar ist, wobei das Element über den Verbraucher nachladbar ist, mit einer Einrichtung zur Erfassung zumindest eines Betriebsparameters der Brennkraftmaschine, gekennzeichnet durch Mittel (2,9,14) zur Reduzierung des Kraftstoffversorgungsdruckes unter einen vorgebbaren Betriebswert in Abhängigkeit des Betriebsparameters.
- Vorrichtung nach Anspruch 7, gekennzeichnet durch eine erste Auswerteeinrichtung (14) für die der Spannungshöhe (UBAT) der Energieversorgungseinrichtung (10) und vorzugsweise für die Drehzahl (n) der Brennkraftmaschine
- Vorrichtung nach Anspruch 7, gekennzeichnet durch Mittel (2,3,15) für die Begrenzung der Kraftstoffmenge in Abhängigkeit des Betriebsparameters.
- Vorrichtung nach Anspruch 9, gekennzeichnet durch eine zweite Auswerteeinrichtung (15) für die Drehzahl (n) der Brennkraftmaschine und vorzugsweise die Spannungshöhe (UBAT) der Energieversorgungseinrichtung (10).
- Vorrichtung nach Anspruch 9, gekennzeichnet durch eine zweite Auswerteeinrichtung (15) für die Drehzahl (n) der Brennkraftmaschine und des Kraftstoffversorgungsdruckes.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10022953 | 2000-05-11 | ||
DE10022953A DE10022953A1 (de) | 2000-05-11 | 2000-05-11 | Verfahren und Vorrichtung zur Steuerung der Kraftstoffeinspritzung |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1154142A2 true EP1154142A2 (de) | 2001-11-14 |
EP1154142A3 EP1154142A3 (de) | 2003-04-23 |
EP1154142B1 EP1154142B1 (de) | 2005-06-01 |
Family
ID=7641568
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01107985A Expired - Lifetime EP1154142B1 (de) | 2000-05-11 | 2001-03-29 | Verfahren und Vorrichtung zur Steuerung der Kraftstoffeinspritzung |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1154142B1 (de) |
JP (1) | JP2002004923A (de) |
KR (1) | KR100771290B1 (de) |
DE (2) | DE10022953A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013007560A1 (de) * | 2011-07-08 | 2013-01-17 | Robert Bosch Gmbh | Verfahren zum ansteuern eines elektromagnetischen verbrauchers |
CN115405433A (zh) * | 2022-09-29 | 2022-11-29 | 潍柴动力股份有限公司 | 一种发动机供油压力的控制方法、装置、设备及介质 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10140157B4 (de) * | 2001-08-16 | 2010-07-22 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Ansteuern eines Magnetventils |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3643154A1 (de) * | 1985-12-18 | 1987-06-25 | Toyota Motor Co Ltd | Ansaugluft-steuervorrichtung fuer eine brennkraftmaschine |
DE3901660A1 (de) * | 1988-01-25 | 1989-08-03 | Mitsubishi Electric Corp | Steuervorrichtung fuer eine kraftstoffeinspritzung |
DE19539071A1 (de) * | 1995-03-02 | 1996-09-05 | Bosch Gmbh Robert | Vorrichtung zur Ansteuerung wenigstens eines elektromagnetischen Verbrauchers |
US5797372A (en) * | 1996-04-10 | 1998-08-25 | Toyota Jidosha Kabushiki Kaisha | Fuel supplying apparatus for internal combustion engine |
DE19731102A1 (de) * | 1997-07-19 | 1999-01-21 | Bosch Gmbh Robert | System zum Betreiben eines Kraftstoffversorgungssystems für eine Brennkraftmaschine insbesondere eines Kraftfahrzeugs |
DE19746980A1 (de) * | 1997-10-24 | 1999-04-29 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Ansteuerung wenigstens eines elektromagnetischen Verbrauchers |
DE19813138A1 (de) * | 1998-03-25 | 1999-09-30 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Ansteuerung eines elektromagnetischen Verbrauchers |
DE19853823A1 (de) * | 1998-11-21 | 2000-05-25 | Bosch Gmbh Robert | Verfahren zum Betreiben einer Brennkraftmaschine insbesondere eines Kraftfahrzeugs |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996027198A1 (de) * | 1995-03-02 | 1996-09-06 | Robert Bosch Gmbh | Vorrichtung zur ansteuerung wenigstens eines elektromagnetischen verbrauchers |
DE19536109A1 (de) * | 1995-09-28 | 1997-04-03 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Überwachung eines Kraftstoffzumeßsystems |
-
2000
- 2000-05-11 DE DE10022953A patent/DE10022953A1/de not_active Withdrawn
-
2001
- 2001-03-29 DE DE50106367T patent/DE50106367D1/de not_active Expired - Lifetime
- 2001-03-29 EP EP01107985A patent/EP1154142B1/de not_active Expired - Lifetime
- 2001-05-09 JP JP2001139159A patent/JP2002004923A/ja active Pending
- 2001-05-11 KR KR1020010025674A patent/KR100771290B1/ko not_active IP Right Cessation
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3643154A1 (de) * | 1985-12-18 | 1987-06-25 | Toyota Motor Co Ltd | Ansaugluft-steuervorrichtung fuer eine brennkraftmaschine |
DE3901660A1 (de) * | 1988-01-25 | 1989-08-03 | Mitsubishi Electric Corp | Steuervorrichtung fuer eine kraftstoffeinspritzung |
DE19539071A1 (de) * | 1995-03-02 | 1996-09-05 | Bosch Gmbh Robert | Vorrichtung zur Ansteuerung wenigstens eines elektromagnetischen Verbrauchers |
US5797372A (en) * | 1996-04-10 | 1998-08-25 | Toyota Jidosha Kabushiki Kaisha | Fuel supplying apparatus for internal combustion engine |
DE19731102A1 (de) * | 1997-07-19 | 1999-01-21 | Bosch Gmbh Robert | System zum Betreiben eines Kraftstoffversorgungssystems für eine Brennkraftmaschine insbesondere eines Kraftfahrzeugs |
DE19746980A1 (de) * | 1997-10-24 | 1999-04-29 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Ansteuerung wenigstens eines elektromagnetischen Verbrauchers |
DE19813138A1 (de) * | 1998-03-25 | 1999-09-30 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Ansteuerung eines elektromagnetischen Verbrauchers |
DE19853823A1 (de) * | 1998-11-21 | 2000-05-25 | Bosch Gmbh Robert | Verfahren zum Betreiben einer Brennkraftmaschine insbesondere eines Kraftfahrzeugs |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013007560A1 (de) * | 2011-07-08 | 2013-01-17 | Robert Bosch Gmbh | Verfahren zum ansteuern eines elektromagnetischen verbrauchers |
CN115405433A (zh) * | 2022-09-29 | 2022-11-29 | 潍柴动力股份有限公司 | 一种发动机供油压力的控制方法、装置、设备及介质 |
CN115405433B (zh) * | 2022-09-29 | 2023-11-17 | 潍柴动力股份有限公司 | 一种发动机供油压力的控制方法、装置、设备及介质 |
Also Published As
Publication number | Publication date |
---|---|
DE50106367D1 (de) | 2005-07-07 |
KR100771290B1 (ko) | 2007-10-29 |
EP1154142B1 (de) | 2005-06-01 |
DE10022953A1 (de) | 2001-11-15 |
EP1154142A3 (de) | 2003-04-23 |
KR20010104663A (ko) | 2001-11-26 |
JP2002004923A (ja) | 2002-01-09 |
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