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EP1260702A3 - A fuel injection system for an internal combustion engine - Google Patents

A fuel injection system for an internal combustion engine Download PDF

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Publication number
EP1260702A3
EP1260702A3 EP02008632A EP02008632A EP1260702A3 EP 1260702 A3 EP1260702 A3 EP 1260702A3 EP 02008632 A EP02008632 A EP 02008632A EP 02008632 A EP02008632 A EP 02008632A EP 1260702 A3 EP1260702 A3 EP 1260702A3
Authority
EP
European Patent Office
Prior art keywords
fuel injection
controlled
combustion engine
internal combustion
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.)
Granted
Application number
EP02008632A
Other languages
German (de)
French (fr)
Other versions
EP1260702A2 (en
EP1260702B1 (en
Inventor
Nestor Rodriguez-Amaya
Roger Potschin
Juergen Gruen
Ulrich 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 EP1260702A2 publication Critical patent/EP1260702A2/en
Publication of EP1260702A3 publication Critical patent/EP1260702A3/en
Application granted granted Critical
Publication of EP1260702B1 publication Critical patent/EP1260702B1/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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/0045—Three-way valves
    • 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
    • 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
    • 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 jeden Zylinder der Brennkraftmaschine eine Kraftstoffpumpe (10) auf, die mit einem Kraftstoffeinspritzventil (12) verbunden ist, das ein Einspritzventilglied (28) aufweist, durch das wenigstens eine Einspritzöffnung (32) gesteurt wird und das durch den im Pumpenarbeitsraum (22) erzeugten Druck gegen eine Schließkraft in einer Öffnungsrichtung (29) bewegbar ist. Durch ein erstes elektrisch gesteuertes Steuerventil (60), wird eine Verbindung (59) des Pumpenarbeitsraums (22) mit einem Entlastungsraum (24) gesteuert und durch ein zweites elektrisch gesteuertes Steuerventil (68) wird der in einem Steuerdruckraum (52) des Kraftstoffeinspritzventils (12) herrschende Druck gesteuert. In der durch das erste Steuerventil (60) gesteuerten Verbindung (59) des Pumpenarbeitsraums (22) ist ein Druckhalteventil (62) angeordnet.

Figure 00000001
The fuel injection device has a fuel pump (10) for each cylinder of the internal combustion engine, which is connected to a fuel injection valve (12), which has an injection valve member (28) through which at least one injection opening (32) is actuated and which is pumped through in the pump work chamber ( 22) generated pressure against a closing force is movable in an opening direction (29). A connection (59) of the pump work chamber (22) to a relief chamber (24) is controlled by a first electrically controlled control valve (60) and that in a control pressure chamber (52) of the fuel injection valve (12) is controlled by a second electrically controlled control valve (68) ) controlled pressure. A pressure holding valve (62) is arranged in the connection (59) of the pump work chamber (22) controlled by the first control valve (60).
Figure 00000001
EP02008632A 2001-05-17 2002-04-17 A fuel injection system for an internal combustion engine Expired - Lifetime EP1260702B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10123993 2001-05-17
DE10123993A DE10123993A1 (en) 2001-05-17 2001-05-17 Fuel injection device has pressure maintaining valve between working cavity of pump and first control valve

Publications (3)

Publication Number Publication Date
EP1260702A2 EP1260702A2 (en) 2002-11-27
EP1260702A3 true EP1260702A3 (en) 2004-03-17
EP1260702B1 EP1260702B1 (en) 2005-11-02

Family

ID=7685110

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02008632A Expired - Lifetime EP1260702B1 (en) 2001-05-17 2002-04-17 A fuel injection system for an internal combustion engine

Country Status (3)

Country Link
US (1) US6637670B2 (en)
EP (1) EP1260702B1 (en)
DE (2) DE10123993A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10205750A1 (en) * 2002-02-12 2003-08-21 Bosch Gmbh Robert Fuel injection device for an internal combustion engine
DE10221384A1 (en) * 2002-05-14 2003-11-27 Bosch Gmbh Robert Fuel injection device for an internal combustion engine
US20060196974A1 (en) * 2005-03-01 2006-09-07 Caterpillar Inc. Fuel injector having a gradually restricted drain passageway
ATE494477T1 (en) * 2005-10-25 2011-01-15 Crt Common Rail Technologies Ag INJECTOR FOR A FUEL INJECTION SYSTEM AND FUEL INJECTION SYSTEM WITH SUCH AN INJECTOR
US20170093005A1 (en) * 2015-09-24 2017-03-30 Qualcomm Incorporated High-density stacked grounded coplanar waveguides
JP6962039B2 (en) * 2017-07-12 2021-11-05 株式会社デンソー Fuel injection device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5054445A (en) * 1989-11-15 1991-10-08 Man Nutzfahrzeuge Ag Fuel injection system for self-ignition internal combustion engines
DE4118236A1 (en) * 1990-06-06 1991-12-12 Avl Verbrennungskraft Messtech Cyclic-delivery fuel injection system for combustion engine - employs two control valves in low-pressure system supplying nozzle with fuel also during pre-injection period
US5529042A (en) * 1994-03-04 1996-06-25 Mercedes-Benz A.G. Fuel injection system for an internal combustion engine
EP0957261A2 (en) * 1998-05-15 1999-11-17 LUCAS INDUSTRIES public limited company Fuel system and pump suitable for use therein
DE19939421A1 (en) * 1999-08-20 2001-03-01 Bosch Gmbh Robert Combined stroke / pressure controlled fuel injection method and system for an internal combustion engine

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06257529A (en) * 1993-02-18 1994-09-13 Robert Bosch Gmbh Fuel injector for internal combustion engine
JP3842331B2 (en) * 1995-05-26 2006-11-08 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング FUEL SUPPLY DEVICE FOR FUEL SUPPLY FOR INTERNAL COMBUSTION ENGINE AND METHOD FOR OPERATING INTERNAL COMBUSTION ENGINE
JP3939779B2 (en) * 1995-05-26 2007-07-04 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング Fuel supply device for fuel supply of an internal combustion engine
IT239878Y1 (en) * 1996-12-23 2001-03-13 Elasis Sistema Ricerca Fiat IMPROVEMENTS TO AN ELECTROMAGNETIC CONTROL DOSING VALVE FOR A FUEL INJECTOR.
DE19752834A1 (en) * 1997-11-28 1999-06-02 Bosch Gmbh Robert Fuel injection device for internal combustion engines
DE19822671A1 (en) * 1998-05-20 1999-11-25 Bosch Gmbh Robert Pressure limiting valve for internal combustion engine
US6484699B2 (en) * 2000-03-06 2002-11-26 Marius A. Paul Universal fuel injection system
DE10123994A1 (en) * 2001-05-17 2002-11-21 Bosch Gmbh Robert Fuel injection device for internal combustion engine has two control valves controlled by common actuator that controls pressure in actuator pressure chamber applied to both control valves

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5054445A (en) * 1989-11-15 1991-10-08 Man Nutzfahrzeuge Ag Fuel injection system for self-ignition internal combustion engines
DE4118236A1 (en) * 1990-06-06 1991-12-12 Avl Verbrennungskraft Messtech Cyclic-delivery fuel injection system for combustion engine - employs two control valves in low-pressure system supplying nozzle with fuel also during pre-injection period
US5529042A (en) * 1994-03-04 1996-06-25 Mercedes-Benz A.G. Fuel injection system for an internal combustion engine
EP0957261A2 (en) * 1998-05-15 1999-11-17 LUCAS INDUSTRIES public limited company Fuel system and pump suitable for use therein
DE19939421A1 (en) * 1999-08-20 2001-03-01 Bosch Gmbh Robert Combined stroke / pressure controlled fuel injection method and system for an internal combustion engine

Also Published As

Publication number Publication date
DE10123993A1 (en) 2002-11-21
US6637670B2 (en) 2003-10-28
DE50204742D1 (en) 2005-12-08
US20030006296A1 (en) 2003-01-09
EP1260702A2 (en) 2002-11-27
EP1260702B1 (en) 2005-11-02

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