EP1241347A3 - Fuel injection system for internal combustion engines - Google Patents

Fuel injection system for internal combustion engines Download PDF

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Publication number
EP1241347A3
EP1241347A3 EP02004726A EP02004726A EP1241347A3 EP 1241347 A3 EP1241347 A3 EP 1241347A3 EP 02004726 A EP02004726 A EP 02004726A EP 02004726 A EP02004726 A EP 02004726A EP 1241347 A3 EP1241347 A3 EP 1241347A3
Authority
EP
European Patent Office
Prior art keywords
pressure
fuel
controlled
internal combustion
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
EP02004726A
Other languages
German (de)
French (fr)
Other versions
EP1241347B1 (en
EP1241347A2 (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 EP1241347A2 publication Critical patent/EP1241347A2/en
Publication of EP1241347A3 publication Critical patent/EP1241347A3/en
Application granted granted Critical
Publication of EP1241347B1 publication Critical patent/EP1241347B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • 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
    • 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
    • F02M45/02—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
    • F02M45/06—Pumps peculiar thereto
    • 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
    • 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
    • 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
    • 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
    • F02M63/0003—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure
    • F02M63/0007—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure using electrically actuated 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
    • 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 für für jeden Zylinder der Brennkraftmaschine eine Kraftstoffpumpe (10) auf, die einen durch die Brennkraftmaschine in einer Hubbewegung angetriebenen Pumpenkolben (18) aufweist, der einen Pumpenarbeitsraum (22) begrenzt, dem Kraftstoff aus einem Kraftstoffvorratsbehälter (24) zugeführt wird und der mit einem 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 einer Öffnungsrichtung (29) bewegbar ist. Durch ein erstes elektrisch gesteuertes Steuerventil (60), wird eine Verbindung (59) des Pumpenarbeitsraums (22) mit einem Absteuerraum (62) gesteuert und durch ein zweites elektrisch gesteuertes Steuerventil (68) wird der in einem Steuerdruckraum (52) des Kraftstoffeinspritzventils (12) herrschende Druck gesteuert, durch den das Einspritzventilglied (28) zumindest mittelbar in Schließrichtung beaufschlagt ist. Der Absteuerraum (62) ist als Druckspeicher ausgebildet, in dem ein gegenüber dem im Kraftstoffvorratsbehälter (24) herrschenden Druck erhöhter Druck aufrechterhalten wird.

Figure 00000001
For each cylinder of the internal combustion engine, the fuel injection device has a fuel pump (10), which has a pump piston (18) driven by the internal combustion engine in a lifting movement, which delimits a pump work chamber (22), to which fuel is supplied from a fuel reservoir (24) and 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 controlled and which can be moved in an opening direction (29) against a closing force by the pressure generated in the pump work chamber (22) , A connection (59) of the pump work chamber (22) to an exhaust control chamber (62) 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) ) prevailing pressure controlled by which the injection valve member (28) is acted upon at least indirectly in the closing direction. The control chamber (62) is designed as a pressure accumulator in which a pressure which is higher than the pressure prevailing in the fuel reservoir (24) is maintained.
Figure 00000001
EP02004726A 2001-03-15 2002-03-01 Fuel injection system for internal combustion engines Expired - Lifetime EP1241347B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10112432 2001-03-15
DE10112432A DE10112432A1 (en) 2001-03-15 2001-03-15 Fuel injection device for internal combustion engines

Publications (3)

Publication Number Publication Date
EP1241347A2 EP1241347A2 (en) 2002-09-18
EP1241347A3 true EP1241347A3 (en) 2004-03-10
EP1241347B1 EP1241347B1 (en) 2006-05-10

Family

ID=7677544

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02004726A Expired - Lifetime EP1241347B1 (en) 2001-03-15 2002-03-01 Fuel injection system for internal combustion engines

Country Status (3)

Country Link
US (1) US6651626B2 (en)
EP (1) EP1241347B1 (en)
DE (2) DE10112432A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7191762B2 (en) * 2002-03-26 2007-03-20 Volvo Lastvagnar Ab Fuel injection system
EP1359316B1 (en) * 2002-05-03 2007-04-18 Delphi Technologies, Inc. Fuel injection system
US7077101B2 (en) * 2002-08-14 2006-07-18 Electro-Motive Diesel, Inc. Hybrid fuel injection system
DE10238951A1 (en) * 2002-08-24 2004-03-11 Robert Bosch Gmbh Fuel injection system
US7059301B2 (en) * 2003-02-20 2006-06-13 Caterpillar Inc. End of injection rate shaping
US7373924B1 (en) * 2007-05-10 2008-05-20 Ford Global Technologies, Llc Method and system to mitigate pump noise in a direct injection, spark ignition engine
US7970526B2 (en) 2009-01-05 2011-06-28 Caterpillar Inc. Intensifier quill for fuel injector and fuel system using same
DE102016015037B3 (en) * 2016-12-16 2018-05-30 L'orange Gmbh fuel injector
JP7344019B2 (en) * 2019-06-24 2023-09-13 株式会社ジャパンエンジンコーポレーション Marine internal combustion engine

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1962720A1 (en) * 1969-05-07 1970-11-19 Univ Magdeburg Tech Equal pressure injection device, especially for diesel 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
JPH0693936A (en) * 1992-09-11 1994-04-05 Mitsubishi Motors Corp Accumulator fuel injection device
EP0740067A2 (en) * 1995-04-27 1996-10-30 Isuzu Motors Limited Accumulator-type fuel injection system
EP0957261A2 (en) * 1998-05-15 1999-11-17 LUCAS INDUSTRIES public limited company Fuel system and pump suitable for use therein
US6142127A (en) * 1999-01-25 2000-11-07 Siemens Automotive Corporation Restriction structure for reducing gas formation in a high pressure fuel return line
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 (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9422864D0 (en) * 1994-11-12 1995-01-04 Lucas Ind Plc Fuel system
DE19640826B4 (en) * 1995-10-03 2004-11-25 Nippon Soken, Inc., Nishio Storage fuel injection device and pressure control device therefor
DE69905685T2 (en) * 1998-11-19 2003-10-02 Mitsubishi Jidosha Kogyo K.K., Tokio/Tokyo Fuel injection device of the battery type
EP1008741B1 (en) * 1998-11-20 2003-04-02 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Accumulator type fuel injection system
DE19939424A1 (en) * 1999-08-20 2001-03-08 Bosch Gmbh Robert Fuel injection system for an internal combustion engine
DE60000255T2 (en) * 1999-09-22 2003-03-27 Mitsubishi Jidosha Kogyo K.K., Tokio/Tokyo Reservoir fuel injection device
GB2367588B (en) * 2000-03-31 2004-11-10 Mitsubishi Motors Corp Accumulator fuel-injection apparatus

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1962720A1 (en) * 1969-05-07 1970-11-19 Univ Magdeburg Tech Equal pressure injection device, especially for diesel 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
JPH0693936A (en) * 1992-09-11 1994-04-05 Mitsubishi Motors Corp Accumulator fuel injection device
EP0740067A2 (en) * 1995-04-27 1996-10-30 Isuzu Motors Limited Accumulator-type fuel injection system
EP0957261A2 (en) * 1998-05-15 1999-11-17 LUCAS INDUSTRIES public limited company Fuel system and pump suitable for use therein
US6142127A (en) * 1999-01-25 2000-11-07 Siemens Automotive Corporation Restriction structure for reducing gas formation in a high pressure fuel return line
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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 018, no. 360 (M - 1634) 7 July 1994 (1994-07-07) *

Also Published As

Publication number Publication date
DE50206716D1 (en) 2006-06-14
DE10112432A1 (en) 2002-09-19
US20020129792A1 (en) 2002-09-19
EP1241347B1 (en) 2006-05-10
EP1241347A2 (en) 2002-09-18
US6651626B2 (en) 2003-11-25

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