EP1310668A3 - Fuel injection system for a combustion engine - Google Patents

Fuel injection system for a combustion engine Download PDF

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Publication number
EP1310668A3
EP1310668A3 EP02022362A EP02022362A EP1310668A3 EP 1310668 A3 EP1310668 A3 EP 1310668A3 EP 02022362 A EP02022362 A EP 02022362A EP 02022362 A EP02022362 A EP 02022362A EP 1310668 A3 EP1310668 A3 EP 1310668A3
Authority
EP
European Patent Office
Prior art keywords
chamber
control
pressure
controlled
fuel injection
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
Application number
EP02022362A
Other languages
German (de)
French (fr)
Other versions
EP1310668B1 (en
EP1310668A2 (en
Inventor
Peter Boehland
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 EP1310668A2 publication Critical patent/EP1310668A2/en
Publication of EP1310668A3 publication Critical patent/EP1310668A3/en
Application granted granted Critical
Publication of EP1310668B1 publication Critical patent/EP1310668B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
    • F02M61/205—Means specially adapted for varying the spring tension or assisting the spring force to close the injection-valve, e.g. with damping of valve lift
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/12—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship providing a continuous cyclic delivery with variable pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/02—Injectors structurally combined with fuel-injection pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
    • F02M59/366—Valves being actuated electrically

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

Die Kraftstoffeinspritzeinrichtung weist für für jeden Zylinder der Brennkraftmaschine eine Kraftstoffhochdruckpumpe (10) und ein mit dieser verbundenes Kraftstoffeinspritzventil (12) auf. Ein Pumpenkolben (18) der Kraftstoffhochdruckpumpe (10) begrenzt einen Pumpenarbeitsraum (22), der mit einem Druckraum (40) des Kraftstoffeinspritzventils (12) verbunden ist, das ein Einspritzventilglied (28) aufweist, durch Einspritzöffnungen (32) gesteuert werden und das durch den im Druckraum (40) herrschenden Druck gegen eine Schließkraft in einer Öffnungsrichtung (29) bewegbar ist. Durch ein erstes Steuerventil (68) wird eine Verbindung (66) des Pumpenarbeitsraums (22) mit einem Entlastungsraum (24) gesteuert und durch ein zweites Steuerventil (70) wird eine Verbindung (64) eines mit dem Pumpenarbeitsraum (22) verbundenen Steuerdruckraums (52) mit einem Entlastungsraum (24) gesteuert. Ein mit dem Einspritzventilglied (28) verbundener Steuerkolben (50) unterteilt den Steuerdruckraum (52) in zwei voneinander getrennte Teilräume (54,56), die über eine Drosselstelle (55) miteinander verbunden sind. Bei geschlossenem zweitem Steuerventil (70) wirkt eine geringere Kraft in einer Schließrichtung des Einspritzventilglieds (28) auf den Steuerkolben (50) als bei geöffnetem zweitem Steuerventil (70).

Figure 00000001
The fuel injection device has a high-pressure fuel pump (10) and a fuel injection valve (12) connected to each cylinder of the internal combustion engine. A pump piston (18) of the high-pressure fuel pump (10) delimits a pump work chamber (22) which is connected to a pressure chamber (40) of the fuel injection valve (12), which has an injection valve member (28), can be controlled by injection openings (32) and by the pressure prevailing in the pressure chamber (40) can be moved in an opening direction (29) against a closing force. A connection (66) of the pump work chamber (22) to a relief chamber (24) is controlled by a first control valve (68) and a connection (64) of a control pressure chamber (52) connected to the pump work chamber (22) is controlled by a second control valve (70) ) controlled with a relief chamber (24). A control piston (50) connected to the injection valve member (28) divides the control pressure chamber (52) into two separate compartments (54, 56) which are connected to each other via a throttle point (55). When the second control valve (70) is closed, a smaller force acts in a closing direction of the injection valve member (28) on the control piston (50) than when the second control valve (70) is open.
Figure 00000001
EP02022362A 2001-11-10 2002-10-08 Fuel injection system for a combustion engine Expired - Lifetime EP1310668B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10155406A DE10155406A1 (en) 2001-11-10 2001-11-10 Fuel injection device for an internal combustion engine
DE10155406 2001-11-10

Publications (3)

Publication Number Publication Date
EP1310668A2 EP1310668A2 (en) 2003-05-14
EP1310668A3 true EP1310668A3 (en) 2004-12-15
EP1310668B1 EP1310668B1 (en) 2006-09-20

Family

ID=7705404

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02022362A Expired - Lifetime EP1310668B1 (en) 2001-11-10 2002-10-08 Fuel injection system for a combustion engine

Country Status (3)

Country Link
US (1) US6779741B2 (en)
EP (1) EP1310668B1 (en)
DE (2) DE10155406A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105247200A (en) * 2013-05-29 2016-01-13 罗伯特·博世有限公司 Methods and devices for protecting antenna components from contaminants

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10160263A1 (en) * 2001-12-07 2003-06-18 Bosch Gmbh Robert Fuel injection device for an internal combustion engine
DE10160258A1 (en) * 2001-12-07 2003-06-18 Bosch Gmbh Robert Fuel injection device for an internal combustion engine
US7191762B2 (en) * 2002-03-26 2007-03-20 Volvo Lastvagnar Ab Fuel injection system
DE10358010B3 (en) * 2003-12-11 2005-06-23 Volkswagen Mechatronic Gmbh & Co. Kg Pump-jet device for diesel engine fuel injection with pump, control valve and jet unit has throttle between working space of pump and discharge channel coupled to control space via valve element
DE102004024926A1 (en) * 2004-05-19 2005-12-15 Volkswagen Mechatronic Gmbh & Co. Kg Pump-nozzle unit
US6976474B1 (en) * 2004-07-19 2005-12-20 Caterpillar Inc. Mechanically actuated, electronically controlled fuel injection system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0262539A1 (en) * 1986-09-25 1988-04-06 Ganser-Hydromag Fuel injector unit
EP0905719A2 (en) * 1997-09-20 1999-03-31 LUCAS INDUSTRIES public limited company Control method
DE19826719A1 (en) * 1998-06-16 1999-12-23 Bosch Gmbh Robert Valve control unit for a fuel injector
EP0987431A2 (en) * 1998-09-18 2000-03-22 Lucas Industries Limited Fuel injector
EP1081373A2 (en) * 1999-08-28 2001-03-07 Delphi Technologies, Inc. Fuel injector
EP1098087A1 (en) * 1999-10-09 2001-05-09 Delphi Technologies, Inc. Fuel Injector

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3469793A (en) * 1967-05-11 1969-09-30 Int Harvester Co Fuel injection system
US4200231A (en) * 1978-06-19 1980-04-29 General Motors Corporation Fuel injector nozzle
DE19951964A1 (en) * 1999-10-28 2001-05-03 Bosch Gmbh Robert Fuel injection valve for internal combustion engines
DE19952512A1 (en) * 1999-10-30 2001-05-10 Bosch Gmbh Robert Pressure booster and fuel injection system with a pressure booster

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0262539A1 (en) * 1986-09-25 1988-04-06 Ganser-Hydromag Fuel injector unit
EP0905719A2 (en) * 1997-09-20 1999-03-31 LUCAS INDUSTRIES public limited company Control method
DE19826719A1 (en) * 1998-06-16 1999-12-23 Bosch Gmbh Robert Valve control unit for a fuel injector
EP0987431A2 (en) * 1998-09-18 2000-03-22 Lucas Industries Limited Fuel injector
EP1081373A2 (en) * 1999-08-28 2001-03-07 Delphi Technologies, Inc. Fuel injector
EP1098087A1 (en) * 1999-10-09 2001-05-09 Delphi Technologies, Inc. Fuel Injector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105247200A (en) * 2013-05-29 2016-01-13 罗伯特·博世有限公司 Methods and devices for protecting antenna components from contaminants
CN105247200B (en) * 2013-05-29 2019-06-11 罗伯特·博世有限公司 High-pressure pump for fuel injection system

Also Published As

Publication number Publication date
DE10155406A1 (en) 2003-05-22
EP1310668B1 (en) 2006-09-20
DE50208195D1 (en) 2006-11-02
US20030111051A1 (en) 2003-06-19
EP1310668A2 (en) 2003-05-14
US6779741B2 (en) 2004-08-24

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