WO2010118819A1 - Procédé destiné à réduire la pression de carburant dans un système d'alimentation en carburant sans reflux - Google Patents

Procédé destiné à réduire la pression de carburant dans un système d'alimentation en carburant sans reflux Download PDF

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Publication number
WO2010118819A1
WO2010118819A1 PCT/EP2010/001948 EP2010001948W WO2010118819A1 WO 2010118819 A1 WO2010118819 A1 WO 2010118819A1 EP 2010001948 W EP2010001948 W EP 2010001948W WO 2010118819 A1 WO2010118819 A1 WO 2010118819A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuel
supply system
fuel supply
internal combustion
combustion engine
Prior art date
Application number
PCT/EP2010/001948
Other languages
German (de)
English (en)
Inventor
Matthias Herger
Thomas Fahl
Original Assignee
Bayerische Motoren Werke Aktiengesellschaft
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bayerische Motoren Werke Aktiengesellschaft filed Critical Bayerische Motoren Werke Aktiengesellschaft
Publication of WO2010118819A1 publication Critical patent/WO2010118819A1/fr

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
    • F02D41/02—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
    • 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
    • F02D41/008—Controlling each cylinder individually
    • F02D41/0087—Selective cylinder activation, i.e. partial cylinder operation
    • 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
    • F02D41/3845—Controlling the fuel pressure by controlling the flow into the common rail, e.g. the amount of fuel pumped
    • 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
    • F02D41/0002—Controlling intake air
    • F02D2041/001—Controlling intake air for engines with variable valve actuation
    • 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
    • F02D2250/18—Control of the engine output torque
    • F02D2250/24—Control of the engine output torque by using an external load, e.g. a generator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D37/00—Non-electrical conjoint control of two or more functions of engines, not otherwise provided for
    • F02D37/02—Non-electrical conjoint control of two or more functions of engines, not otherwise provided for one of the functions being ignition

Definitions

  • the invention relates to a method for lowering the fuel pressure in a non-return fuel supply system of an internal combustion engine to a desired pressure level according to the preamble of patent claim 1.
  • Gasoline or gasoline engines with direct injection have been known for some time.
  • the fuel is not injected into the intake tract, but via appropriately trained injectors directly into the combustion chamber of the cylinder.
  • injectors directly into the combustion chamber of the cylinder.
  • Such internal combustion engines are often equipped with a common rail accumulator injection system in which the fuel is provided in a high pressure fuel high pressure accumulator for injection.
  • a method for lowering the fuel pressure in a non-return fuel supply system of an internal combustion engine is already known from DE 199 51 132 A1.
  • the fuel supply operated system and the internal combustion engine in a pressure reduction operation, in which at least one fuel pump of the fuel supply system is controlled such that adjusts the desired pressure level.
  • the lowering request may be initiated by a mechanic or other person for maintenance or repair purposes.
  • the fuel pressure is lowered so far that it is sufficient for injecting fuel.
  • the object of the invention is to provide a switching-off method of internal combustion engines with non-return fuel supply systems which is improved taking into account the above-mentioned prior art, so that the use of so-called HC brakes can be avoided.
  • the fuel supply system comprising at least one fuel pump and the internal combustion engine are operable in a pressure drop operation in the at least one fuel pump of the fuel supply system is controlled so that sets the desired pressure level.
  • the fuel supply system and the internal combustion engine are then automatically operated in the above-described pressure reduction mode as soon as an engine shutdown request is recognizable.
  • the injection control is not switched off or interrupted immediately after detecting the Abschaltginses the internal combustion engine, but only when the desired pressure level is reached.
  • the engine control system is adapted in such a way that upon detecting the Abstellistices the internal combustion engine first, the fuel pressure is lowered to a defined level or a desired pressure level, before the injection is finally switched off.
  • the resulting longer engine torque can be compensated in an advantageous manner, at least partially by a Zündwinkels Georgtver ein or electrical recuperation.
  • the injection of at least one cylinder continued as long as the desired pressure level is not reached, is sufficient for pressure reduction when the at least one fuel pump is driven in such a way that they at least not more fuel in the front of the injectors arranged rail nacharrit than can be injected into the cylinder by opening the injector (in the context of the current operating range of the internal combustion engine).
  • the fuel pump can also be controlled in such a way that no more fuel is delivered.
  • individual cylinders can be switched off even before reaching the desired pressure level, so that no more all injectors are operated to reduce the pressure.
  • further measures can be taken in an advantageous embodiment of the method according to the invention when detecting the engine Abschaltginses.
  • the further measures may be such measures that affect the outlet of the internal combustion engine itself, or the following start low. So z. B. in internal combustion engines with variable camshaft adjustment (short VANOS) this can be brought into the final position to already reach the locking position for the next start in advance can. Further, the throttle may be closed in the outlet to avoid rattling of a arranged on vehicles with manual transmissions between the drive unit and the transmission unit dual mass flywheel.

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

L'invention concerne un procédé destiné à réduire la pression de carburant dans un système d'alimentation en carburant sans reflux d'un moteur à combustion interne, de préférence d'un moteur à combustion interne à injection directe, à un niveau de pression souhaité, au moins une pompe à carburant étant disposée dans le système d'alimentation en carburant et le système d'alimentation en carburant et le moteur à combustion interne pouvant fonctionner en mode de réduction de pression dans lequel une pompe à carburant du système d'alimentation en carburant est commandée de manière à ajuster la pression au niveau souhaité. L'invention est caractérisée en ce que le système d'alimentation en carburant et le moteur à combustion interne fonctionnent automatiquement en mode de réduction de pression dès qu'un souhait d'arrêt du moteur à combustion interne est perçu.
PCT/EP2010/001948 2009-04-15 2010-03-27 Procédé destiné à réduire la pression de carburant dans un système d'alimentation en carburant sans reflux WO2010118819A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009017472.9 2009-04-15
DE102009017472.9A DE102009017472B4 (de) 2009-04-15 2009-04-15 Verfahren zum Absenken des Kraftstoffdrucks in einem rücklauffreien Kraftstoffversorgungssystem

Publications (1)

Publication Number Publication Date
WO2010118819A1 true WO2010118819A1 (fr) 2010-10-21

Family

ID=42126063

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/001948 WO2010118819A1 (fr) 2009-04-15 2010-03-27 Procédé destiné à réduire la pression de carburant dans un système d'alimentation en carburant sans reflux

Country Status (2)

Country Link
DE (1) DE102009017472B4 (fr)
WO (1) WO2010118819A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2976025A1 (fr) * 2011-06-06 2012-12-07 Peugeot Citroen Automobiles Sa Procede de decharge de la pression dans une rampe commune d'un moteur thermique a injection directe
CN104956051A (zh) * 2013-01-29 2015-09-30 罗伯特·博世有限公司 喷射设备中的驱动燃料压力的控制

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013212302A1 (de) * 2013-06-26 2014-12-31 Robert Bosch Gmbh Hochdruckpumpe und Kraftstoffeinspritzanlage mit einer Hochdruckpumpe
JP6229679B2 (ja) * 2015-02-24 2017-11-15 トヨタ自動車株式会社 エンジンの燃圧制御装置
CN113464302B (zh) * 2021-07-29 2022-08-16 一汽解放汽车有限公司 一种燃油系统的停机泄压控制方法及其控制装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19951132A1 (de) 1999-10-23 2001-05-10 Bosch Gmbh Robert Verfahren zum Ablassen des Kraftstoffdrucks in einem rücklauffreien Kraftstoffversorgungssystem
EP1193386A2 (fr) * 2000-09-27 2002-04-03 Ford Global Technologies, Inc. Méthode pour réduire les émissions gazeuses pendant l'arrêt d'un moteur
DE102004062940A1 (de) * 2004-12-28 2006-07-13 Volkswagen Ag Verfahren zum Betreiben eines Hybridantriebs eines Hybridfahrzeugs
DE102006000396A1 (de) * 2005-08-08 2007-02-22 Denso Corp., Kariya Steuervorrichtung für eine Direkteinspritzkraftmaschine und Steuerverfahren

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08338335A (ja) 1995-06-09 1996-12-24 Nippondenso Co Ltd 内燃機関の燃料供給装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19951132A1 (de) 1999-10-23 2001-05-10 Bosch Gmbh Robert Verfahren zum Ablassen des Kraftstoffdrucks in einem rücklauffreien Kraftstoffversorgungssystem
EP1193386A2 (fr) * 2000-09-27 2002-04-03 Ford Global Technologies, Inc. Méthode pour réduire les émissions gazeuses pendant l'arrêt d'un moteur
DE102004062940A1 (de) * 2004-12-28 2006-07-13 Volkswagen Ag Verfahren zum Betreiben eines Hybridantriebs eines Hybridfahrzeugs
DE102006000396A1 (de) * 2005-08-08 2007-02-22 Denso Corp., Kariya Steuervorrichtung für eine Direkteinspritzkraftmaschine und Steuerverfahren

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2976025A1 (fr) * 2011-06-06 2012-12-07 Peugeot Citroen Automobiles Sa Procede de decharge de la pression dans une rampe commune d'un moteur thermique a injection directe
CN104956051A (zh) * 2013-01-29 2015-09-30 罗伯特·博世有限公司 喷射设备中的驱动燃料压力的控制

Also Published As

Publication number Publication date
DE102009017472B4 (de) 2021-08-26
DE102009017472A1 (de) 2010-10-21

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