EP1312792A3 - Fuel injection apparatus for an internal combustion engine - Google Patents

Fuel injection apparatus for an internal combustion engine Download PDF

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Publication number
EP1312792A3
EP1312792A3 EP02022358A EP02022358A EP1312792A3 EP 1312792 A3 EP1312792 A3 EP 1312792A3 EP 02022358 A EP02022358 A EP 02022358A EP 02022358 A EP02022358 A EP 02022358A EP 1312792 A3 EP1312792 A3 EP 1312792A3
Authority
EP
European Patent Office
Prior art keywords
pressure
combustion engine
internal combustion
fuel injection
pump
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
EP02022358A
Other languages
German (de)
French (fr)
Other versions
EP1312792B1 (en
EP1312792A2 (en
Inventor
Peter Grabandt
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 EP1312792A2 publication Critical patent/EP1312792A2/en
Publication of EP1312792A3 publication Critical patent/EP1312792A3/en
Application granted granted Critical
Publication of EP1312792B1 publication Critical patent/EP1312792B1/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
    • 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
    • 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
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/04—Means for damping vibrations or pressure fluctuations in injection pump inlets or outlets
    • 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
    • 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
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • 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
    • F02M2200/40—Fuel-injection apparatus with fuel accumulators, e.g. a fuel injector having an integrated fuel accumulator

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 Kraftstoffhochdruckpumpe (10) und ein mit dieser verbundenes Kraftstoffeinspritzventil (12) für jeden Zylinder der Brennkraftmaschine auf. Die Kraftstoffhochdruckpumpe (10) weist einen durch die Brennkraftmaschine in einer Hubbewegung angetriebenen Pumpenkolben (18) auf, der einen Pumpenarbeitsraum (22) begrenzt, welcher über eine Leitung (14) mit einem Druckraum (40) des getrennt von der Kraftstoffhochdruckpumpe (10) an der Brennkraftmaschine angeordneten Kraftstoffeinspritzventils (12) verbunden ist, das ein Einspritzventilglied (28) aufweist, durch das wenigstens eine Einspritzöffnung (32) gesteuert wird und das durch den im Druckraum (40) herrschenden Druck beaufschlagt gegen eine Schließkraft in Öffnungsrichtung (29) zur Freigabe der wenigstens einen Einspritzöffnung (32) bewegbar ist. Am Kraftstoffeinspritzventil (12) ist ein elektrisch betätigtes Steuerventil (58) vorgesehen, durch das zumindest mittelbar eine Verbindung (54) des Pumpenarbeitsraums (22) mit einem Speicherraum (56) gesteuert wird, in dem bei geöffnetem Steuerventil (58) durch dieses abgesteuerter Kraftstoff unter Druck speicherbar ist.

Figure 00000001
The fuel injection device has a high-pressure fuel pump (10) and a fuel injection valve (12) connected to it for each cylinder of the internal combustion engine. The high-pressure fuel pump (10) has a pump piston (18) which is driven by the internal combustion engine in a lifting movement and which delimits a pump working chamber (22) which, via a line (14), communicates with a pressure chamber (40) which is separate from the high-pressure fuel pump (10) The fuel injection valve (12) which is arranged in the internal combustion engine and which has an injection valve member (28) through which at least one injection opening (32) is controlled and which is acted upon by the pressure prevailing in the pressure chamber (40) against a closing force in the opening direction (29) for release the at least one injection opening (32) is movable. An electrically operated control valve (58) is provided on the fuel injection valve (12), by means of which at least indirectly a connection (54) of the pump work chamber (22) to a storage chamber (56) is controlled, in which fuel which is deactivated by the control valve (58) is opened can be stored under pressure.
Figure 00000001
EP02022358A 2001-11-14 2002-10-08 Fuel injection apparatus for an internal combustion engine Expired - Lifetime EP1312792B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10155973A DE10155973A1 (en) 2001-11-14 2001-11-14 Fuel injection device for an internal combustion engine
DE10155973 2001-11-14

Publications (3)

Publication Number Publication Date
EP1312792A2 EP1312792A2 (en) 2003-05-21
EP1312792A3 true EP1312792A3 (en) 2004-09-01
EP1312792B1 EP1312792B1 (en) 2005-12-28

Family

ID=7705752

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02022358A Expired - Lifetime EP1312792B1 (en) 2001-11-14 2002-10-08 Fuel injection apparatus for an internal combustion engine

Country Status (3)

Country Link
US (1) US6763809B2 (en)
EP (1) EP1312792B1 (en)
DE (2) DE10155973A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1359316B1 (en) * 2002-05-03 2007-04-18 Delphi Technologies, Inc. Fuel injection system
US7353805B2 (en) * 2003-01-30 2008-04-08 Robert Bosch Gmbh Fuel injector pump with trapped volume
WO2004072470A1 (en) * 2003-02-12 2004-08-26 Robert Bosch Gmbh Fuel injector pump system with high pressure post injection
US7451743B2 (en) * 2003-03-04 2008-11-18 Robert Bosch Gmbh Fuel injection system with accumulator fill valve assembly
EP1541860B1 (en) * 2003-12-12 2007-07-04 Delphi Technologies, Inc. Fuel injector with control valve to control the pressure in the needle control chamber
US7066151B1 (en) * 2005-04-07 2006-06-27 Robert Bosch Gmbh Fuel injector with spill chamber
DE102005056133A1 (en) * 2005-11-23 2007-05-24 L'orange Gmbh Injector for combustion engine, has actuator and control chamber whereby pressure reservoir is arranged between control valve and nozzle body
US10982635B2 (en) * 2012-05-29 2021-04-20 Delphi Technologies Ip Limited Fuel injector and method for controlling the same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0524132A2 (en) * 1991-07-16 1993-01-20 Stanadyne Automotive Corp. Fuel system for rotary distributor fuel injection pump
EP0957261A2 (en) * 1998-05-15 1999-11-17 LUCAS INDUSTRIES public limited company Fuel system and pump suitable for use therein
EP1236884A2 (en) * 2001-02-28 2002-09-04 Robert Bosch Gmbh Fuel injection device for internal combustion engines

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3521428A1 (en) * 1985-06-14 1986-12-18 Robert Bosch Gmbh, 7000 Stuttgart FUEL INJECTION DEVICE FOR INTERNAL COMBUSTION ENGINES
CH668621A5 (en) * 1986-01-22 1989-01-13 Dereco Dieselmotoren Forschung FUEL INJECTION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE.
US5732679A (en) * 1995-04-27 1998-03-31 Isuzu Motors Limited Accumulator-type fuel injection system
DE19952512A1 (en) * 1999-10-30 2001-05-10 Bosch Gmbh Robert Pressure booster and fuel injection system with a pressure booster

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0524132A2 (en) * 1991-07-16 1993-01-20 Stanadyne Automotive Corp. Fuel system for rotary distributor fuel injection pump
EP0957261A2 (en) * 1998-05-15 1999-11-17 LUCAS INDUSTRIES public limited company Fuel system and pump suitable for use therein
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
US6763809B2 (en) 2004-07-20
EP1312792B1 (en) 2005-12-28
DE10155973A1 (en) 2003-05-22
DE50205426D1 (en) 2006-02-02
US20030111053A1 (en) 2003-06-19
EP1312792A2 (en) 2003-05-21

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