EP1088981A3 - Method to decrease the pressure in the common rail of an internal combustion engine - Google Patents

Method to decrease the pressure in the common rail of an internal combustion engine Download PDF

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Publication number
EP1088981A3
EP1088981A3 EP00108928A EP00108928A EP1088981A3 EP 1088981 A3 EP1088981 A3 EP 1088981A3 EP 00108928 A EP00108928 A EP 00108928A EP 00108928 A EP00108928 A EP 00108928A EP 1088981 A3 EP1088981 A3 EP 1088981A3
Authority
EP
European Patent Office
Prior art keywords
pressure
internal combustion
common rail
decrease
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Withdrawn
Application number
EP00108928A
Other languages
German (de)
French (fr)
Other versions
EP1088981A2 (en
Inventor
Andreas Kellner
Juergen Hammer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1088981A2 publication Critical patent/EP1088981A2/en
Publication of EP1088981A3 publication Critical patent/EP1088981A3/en
Withdrawn legal-status Critical Current

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
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/3809—Common rail control systems
    • F02D41/3836—Controlling the fuel pressure
    • F02D41/3863—Controlling the fuel pressure by controlling the flow out of the common rail, e.g. using pressure relief valves
    • 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

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

Die Erfindung betrifft ein Verfahren zum Abbau des Rail-Drucks in einem Common-Rail-System für Brennkraftmaschinen mittels eines Druck-Abbau-Ventils, das von einer elektronischen Steuerung angesteuert ist, durch die das Druck-Abbau-Ventil abhängig von der Regelabweichung pRail - psoll mit einer Hysteresekennlinie geöffnet oder geschlossen wird. Erfindungsgemäß sind die Hysteresegrenzen für den Öffnungs- und Schließvorgang des Druck-Abbau-Ventils über ein Rechenschema, das in der elektronischen Steuerung abgelegt ist, variabel gestaltet.

Figure 00000001
The invention relates to a method for reducing the rail pressure in a common rail system for internal combustion engines by means of a pressure reduction valve which is controlled by an electronic control system by means of which the pressure reduction valve depends on the control deviation p Rail - p is to be opened or closed with a hysteresis characteristic. According to the invention, the hysteresis limits for the opening and closing process of the pressure reduction valve are designed to be variable using a calculation scheme which is stored in the electronic control.
Figure 00000001
EP00108928A 1999-09-30 2000-04-27 Method to decrease the pressure in the common rail of an internal combustion engine Withdrawn EP1088981A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1999146908 DE19946908A1 (en) 1999-09-30 1999-09-30 Process for reducing the rail pressure in a common rail system for internal combustion engines
DE19946908 1999-09-30

Publications (2)

Publication Number Publication Date
EP1088981A2 EP1088981A2 (en) 2001-04-04
EP1088981A3 true EP1088981A3 (en) 2002-09-11

Family

ID=7923870

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00108928A Withdrawn EP1088981A3 (en) 1999-09-30 2000-04-27 Method to decrease the pressure in the common rail of an internal combustion engine

Country Status (3)

Country Link
EP (1) EP1088981A3 (en)
JP (1) JP2001115884A (en)
DE (1) DE19946908A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10148222A1 (en) * 2001-09-28 2003-04-17 Bosch Gmbh Robert Method for operating an internal combustion engine
DE10352005A1 (en) * 2003-11-07 2005-06-09 Robert Bosch Gmbh Method for operating an internal combustion engine
JP4544153B2 (en) 2005-12-27 2010-09-15 株式会社デンソー Fuel injection control device
JP4600369B2 (en) 2006-09-05 2010-12-15 株式会社デンソー Pressure reducing valve delay compensation device and program
JP4976318B2 (en) * 2008-01-30 2012-07-18 日立オートモティブシステムズ株式会社 Fuel injection device for internal combustion engine
DE102015205586B3 (en) * 2015-03-27 2016-04-07 Continental Automotive Gmbh High-pressure injection device for an internal combustion engine
DE102019202004A1 (en) * 2019-02-14 2020-08-20 Mtu Friedrichshafen Gmbh Method for operating an injection system of an internal combustion engine, an injection system for an internal combustion engine and an internal combustion engine with such an injection system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19548278A1 (en) * 1995-12-22 1997-06-26 Bosch Gmbh Robert Method of managing IC engine with high pressure fuel injection esp engine with common-rail system
JPH1054318A (en) * 1996-08-09 1998-02-24 Denso Corp Accumulator type fuel supply device for engine
US5758622A (en) * 1996-02-24 1998-06-02 Robert Bosch Gmbh Process and device for controlling an internal combustion engine
DE19731994A1 (en) * 1997-07-25 1999-01-28 Bosch Gmbh Robert Method and device for controlling an internal combustion engine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19548278A1 (en) * 1995-12-22 1997-06-26 Bosch Gmbh Robert Method of managing IC engine with high pressure fuel injection esp engine with common-rail system
US5758622A (en) * 1996-02-24 1998-06-02 Robert Bosch Gmbh Process and device for controlling an internal combustion engine
JPH1054318A (en) * 1996-08-09 1998-02-24 Denso Corp Accumulator type fuel supply device for engine
DE19731994A1 (en) * 1997-07-25 1999-01-28 Bosch Gmbh Robert Method and device for controlling an internal combustion engine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 06 30 April 1998 (1998-04-30) *

Also Published As

Publication number Publication date
EP1088981A2 (en) 2001-04-04
DE19946908A1 (en) 2001-04-05
JP2001115884A (en) 2001-04-24

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