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EP1243785A3 - Fuel injection system for internal combustion engine - Google Patents

Fuel injection system for internal combustion engine Download PDF

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Publication number
EP1243785A3
EP1243785A3 EP02004727A EP02004727A EP1243785A3 EP 1243785 A3 EP1243785 A3 EP 1243785A3 EP 02004727 A EP02004727 A EP 02004727A EP 02004727 A EP02004727 A EP 02004727A EP 1243785 A3 EP1243785 A3 EP 1243785A3
Authority
EP
European Patent Office
Prior art keywords
combustion engine
internal combustion
fuel injection
pump
injection valve
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Withdrawn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
EP02004727A
Other languages
German (de)
French (fr)
Other versions
EP1243785A2 (en
Inventor
Nestor Rodriguez-Amaya
Roger Potschin
Juergen Dr. Gruen
Ulrich Dr. Projahn
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 EP1243785A2 publication Critical patent/EP1243785A2/en
Publication of EP1243785A3 publication Critical patent/EP1243785A3/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Withdrawn legal-status Critical Current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
    • 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
    • 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
    • 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
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/21—Fuel-injection apparatus with piezoelectric or magnetostrictive elements

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 eine Kraftstoffpumpe (10) für jeden Zylinder der Brennkraftmaschine auf, die einen durch die Brennkraftmaschine in einer Hubbewegung angetriebenen Pumpenkolben (18) aufweist, der einen Pumpenarbeitsraum (22) begrenzt, welcher über eine Leitung (14) mit einem getrennt von der Kraftstoffpumpe (10) an der Brennkraftmaschine angeordneten Kraftstoffeinspritzventil (12) verbunden ist, das ein Einspritzventilglied (28) aufweist, durch das wenigstens eine Einspritzöffnung (32) gesteuert wird und das durch den im Pumpenarbeitsraum (22) erzeugten Druck gegen eine Schließkraft in Öffnungsrichtung (29) bewegbar ist, wobei ein erstes elektrisch angesteuertes Steuerventil (60) vorgesehen ist, durch das eine Verbindung (59) des Pumpenarbeitsraums (22) mit einem Entlastungsraum (24) gesteuert wird und das nahe der Kraftstoffpumpe (10) angeordnet ist. Ein zweites elektrisch angesteuertes Steuerventil (64) ist vorgesehen, das nahe dem Kraftstoffeinspritzventil (12) angeordnet ist und durch das der in einem Steuerdruckraum (52) des Kraftstoffeinspritzventils (12) herrschende Druck gesteuert wird, durch den das Einspritzventilglied (28) zumindest mittelbar in Schließrichtung beaufschlagt ist.

Figure 00000001
Figure 00000002
The fuel injection device has a fuel pump (10) for each cylinder of the internal combustion engine, which has a pump piston (18) which is driven by the internal combustion engine in a stroke movement and which delimits a pump work chamber (22) which is connected via a line (14) to a separate one from the Fuel pump (10) connected to the internal combustion engine is connected to a fuel injection valve (12), which has an injection valve member (28) through which at least one injection opening (32) is controlled and which is generated by the pressure generated in the pump working chamber (22) against a closing force in the opening direction ( 29) is movable, a first electrically controlled control valve (60) being provided, through which a connection (59) of the pump work chamber (22) to a relief chamber (24) is controlled and which is arranged near the fuel pump (10). A second electrically controlled control valve (64) is provided, which is arranged near the fuel injection valve (12) and by means of which the pressure prevailing in a control pressure chamber (52) of the fuel injection valve (12) is controlled, by means of which the injection valve member (28) at least indirectly Closing direction is applied.
Figure 00000001
Figure 00000002
EP02004727A 2001-03-21 2002-03-01 Fuel injection system for internal combustion engine Withdrawn EP1243785A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10113654A DE10113654A1 (en) 2001-03-21 2001-03-21 Fuel fine injection device for internal combustion engines
DE10113654 2001-03-21

Publications (2)

Publication Number Publication Date
EP1243785A2 EP1243785A2 (en) 2002-09-25
EP1243785A3 true EP1243785A3 (en) 2004-01-28

Family

ID=7678324

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02004727A Withdrawn EP1243785A3 (en) 2001-03-21 2002-03-01 Fuel injection system for internal combustion engine

Country Status (3)

Country Link
US (1) US6659086B2 (en)
EP (1) EP1243785A3 (en)
DE (1) DE10113654A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE522624C2 (en) * 2001-03-29 2004-02-24 Volvo Teknisk Utveckling Ab A method for controlling the injection of a fluid into an internal combustion engine
EP1826397A3 (en) * 2002-05-03 2009-08-05 Delphi Technologies, Inc. Fuel injection system
AU2003211017A1 (en) * 2003-02-12 2004-09-06 Robert Bosch Gmbh Fuel injector pump system with high pressure post injection
DE10323177A1 (en) * 2003-05-22 2004-12-09 Robert Bosch Gmbh Fuel injection system for internal combustion (IC) engines with several fuel injectors, each with high and low pressure terminals
JP2005069135A (en) * 2003-08-26 2005-03-17 Toyota Motor Corp Fuel injection device
DE10355411B3 (en) * 2003-11-27 2005-07-14 Siemens Ag Injection system and injection method for an internal combustion engine
DE102004053421A1 (en) * 2004-11-05 2006-05-11 Robert Bosch Gmbh Fuel injector
US20060196974A1 (en) * 2005-03-01 2006-09-07 Caterpillar Inc. Fuel injector having a gradually restricted drain passageway
EP1864016B1 (en) * 2005-03-22 2010-06-23 Volvo Lastvagnar Ab Method for controlling a fuel injector
WO2010082217A1 (en) 2008-12-11 2010-07-22 Bosch Limited A fuel injection system for an internal combustion engine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5626119A (en) * 1995-04-04 1997-05-06 Lucas Industries Public Limited Company Fuel system
EP0823549A2 (en) * 1996-08-06 1998-02-11 Lucas Industries Public Limited Company Injector
EP0823550A1 (en) * 1996-08-06 1998-02-11 Lucas Industries Public Limited Company Injector
EP1236884A2 (en) * 2001-02-28 2002-09-04 Robert Bosch Gmbh Fuel injection device for internal combustion engines

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4643155A (en) * 1984-10-05 1987-02-17 Olin Corporation Variable stroke, electronically controlled fuel injection control system
JPH0759919B2 (en) * 1986-04-04 1995-06-28 日本電装株式会社 Fuel injection controller for diesel engine
GB9502671D0 (en) * 1995-02-11 1995-03-29 Lucas Ind Plc Fuel system
US5732679A (en) * 1995-04-27 1998-03-31 Isuzu Motors Limited Accumulator-type fuel injection system
EP0995031B1 (en) * 1997-07-16 2002-01-02 Cummins Wartsila S.A. Device for injecting fuel into a diesel engine
DE19742320A1 (en) * 1997-09-25 1999-04-01 Bosch Gmbh Robert Fuel injector
GB9810327D0 (en) * 1998-05-15 1998-07-15 Lucas Ind Plc Fuel system and pump suitable for use therein
DE19834120A1 (en) * 1998-07-29 2000-02-03 Bosch Gmbh Robert Fuel supply system of an internal combustion engine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5626119A (en) * 1995-04-04 1997-05-06 Lucas Industries Public Limited Company Fuel system
EP0823549A2 (en) * 1996-08-06 1998-02-11 Lucas Industries Public Limited Company Injector
EP0823550A1 (en) * 1996-08-06 1998-02-11 Lucas Industries Public Limited Company Injector
EP1236884A2 (en) * 2001-02-28 2002-09-04 Robert Bosch Gmbh Fuel injection device for internal combustion engines

Also Published As

Publication number Publication date
EP1243785A2 (en) 2002-09-25
US6659086B2 (en) 2003-12-09
DE10113654A1 (en) 2002-09-26
US20020134359A1 (en) 2002-09-26

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