EP1310666A3 - Fuel injection system for internal combustion engine - Google Patents

Fuel injection system for internal combustion engine Download PDF

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Publication number
EP1310666A3
EP1310666A3 EP02022357A EP02022357A EP1310666A3 EP 1310666 A3 EP1310666 A3 EP 1310666A3 EP 02022357 A EP02022357 A EP 02022357A EP 02022357 A EP02022357 A EP 02022357A EP 1310666 A3 EP1310666 A3 EP 1310666A3
Authority
EP
European Patent Office
Prior art keywords
chamber
fuel injection
pressure
combustion engine
internal combustion
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Withdrawn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
EP02022357A
Other languages
German (de)
French (fr)
Other versions
EP1310666A2 (en
Inventor
Roger Potschin
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 EP1310666A2 publication Critical patent/EP1310666A2/en
Publication of EP1310666A3 publication Critical patent/EP1310666A3/en
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • F02M59/368—Pump inlet valves being closed when actuated
    • 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
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0017—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means
    • 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
    • F02M63/0033—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat
    • F02M63/0035—Poppet valves, i.e. having a mushroom-shaped valve member that moves perpendicularly to the plane of the valve seat
    • 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
    • F02M63/004—Sliding valves, e.g. spool valves, i.e. whereby the closing member has a sliding movement along a seat for opening and closing
    • 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
    • F02M63/0047—Four-way valves or valves with more than four ways
    • 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
    • F02M63/0049—Combined valve units, e.g. for controlling pumping chamber and injection valve
    • 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
    • F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
    • F02M57/023—Injectors structurally combined with fuel-injection pumps characterised by the pump drive mechanical
    • 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
    • F02M63/0043—Two-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
    • 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
    • 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
    • F02M63/0059—Arrangements of valve actuators
    • F02M63/0061—Single actuator acting on two or more valve bodies

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (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 Kraftstoffeispritzventil (12) auf. Ein Pumpenkolben (18) der Kraftstoffhochdruckpumpe (10) wird durch die Brennkraftmaschine in einer Hubbewegung angetrieben und begrenzt einen Pumpenarbeitsraum (22), der mit einem Druckraum (40) des 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 gegen eine Schließkraft in einer Öffnungsrichtung (29) bewegbar ist. Durch eine erste Steuerventileinrichtung (62), wird eine ungedrosselte Verbindung (59) und eine Verbindung (60) über eine Drosselstelle (58) des Pumpenarbeitsraums (22) mit einem Entlastungsraum (24) gesteuert und durch eine zweite Steuerventileinrichtung (70) wird eine Verbindung (68) eines mit dem Pumpenarbeitsraum (22) verbundenen Steuerdruckraums (52) des Kraftstoffeinspritzventils (12) mit einem Entlastungsraum (24) gesteuert, wobei das Einspritzventilglied (28) durch den im Steuerdruckraum (52) herrschenden Druck in Schließrichtung beaufschlagt ist.

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) is driven by the internal combustion engine in a stroke movement and 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) the 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 prevailing in the pressure chamber (40). A first control valve device (62) controls an unthrottled connection (59) and a connection (60) via a throttle point (58) of the pump work chamber (22) with a relief chamber (24) and a connection is established by a second control valve device (70) (68) a control pressure chamber (52) of the fuel injection valve (12) connected to the pump work chamber (22) is controlled with a relief chamber (24), the injection valve member (28) being acted upon in the closing direction by the pressure prevailing in the control pressure chamber (52).
Figure 00000001
EP02022357A 2001-11-10 2002-10-08 Fuel injection system for internal combustion engine Withdrawn EP1310666A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10155412 2001-11-10
DE10155412A DE10155412A1 (en) 2001-11-10 2001-11-10 Fuel injection device for an internal combustion engine

Publications (2)

Publication Number Publication Date
EP1310666A2 EP1310666A2 (en) 2003-05-14
EP1310666A3 true EP1310666A3 (en) 2004-02-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP02022357A Withdrawn EP1310666A3 (en) 2001-11-10 2002-10-08 Fuel injection system for internal combustion engine

Country Status (3)

Country Link
US (1) US20030098015A1 (en)
EP (1) EP1310666A3 (en)
DE (1) DE10155412A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105378262A (en) * 2013-07-02 2016-03-02 罗伯特·博世有限公司 Fuel injection valve for internal combustion engine

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10351711B3 (en) * 2003-11-05 2005-06-02 Volkswagen Mechatronic Gmbh & Co. Kg Pump-nozzle apparatus
ATE366359T1 (en) * 2003-12-12 2007-07-15 Delphi Tech Inc INJECTION VALVE WITH CONTROL VALVE THAT CONTROLS THE PRESSURE IN THE CONTROL ROOM
DE102004028886A1 (en) * 2004-06-15 2006-01-05 Robert Bosch Gmbh Fuel injection system
DE102010002037A1 (en) * 2010-02-17 2011-08-18 Robert Bosch GmbH, 70469 Electromagnetic actuator
DE102010008467A1 (en) * 2010-02-18 2011-08-18 Continental Automotive GmbH, 30165 High pressure fuel injector for an internal combustion engine
US10982635B2 (en) * 2012-05-29 2021-04-20 Delphi Technologies Ip Limited Fuel injector and method for controlling the same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
EP0957261A2 (en) * 1998-05-15 1999-11-17 LUCAS INDUSTRIES public limited company Fuel system and pump suitable for use therein
WO2002057621A1 (en) * 2001-01-22 2002-07-25 Robert Bosch Gmbh Device for forming a flexible injection pressure profile by means of a switchable actuator
EP1236884A2 (en) * 2001-02-28 2002-09-04 Robert Bosch Gmbh Fuel injection device for internal combustion engines

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4129256A (en) * 1977-09-12 1978-12-12 General Motors Corporation Electromagnetic unit fuel injector
US4408718A (en) * 1981-09-25 1983-10-11 General Motors Corporation Electromagnetic unit fuel injector
US4540122A (en) * 1983-10-26 1985-09-10 General Motors Corporation Electromagnetic unit fuel injector with pivotable armature
US4568021A (en) * 1984-04-02 1986-02-04 General Motors Corporation Electromagnetic unit fuel injector
US4618095A (en) * 1985-07-02 1986-10-21 General Motors Corporation Electromagnetic unit fuel injector with port assist spilldown

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
EP0957261A2 (en) * 1998-05-15 1999-11-17 LUCAS INDUSTRIES public limited company Fuel system and pump suitable for use therein
WO2002057621A1 (en) * 2001-01-22 2002-07-25 Robert Bosch Gmbh Device for forming a flexible injection pressure profile by means of a switchable actuator
EP1236884A2 (en) * 2001-02-28 2002-09-04 Robert Bosch Gmbh Fuel injection device for internal combustion engines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105378262A (en) * 2013-07-02 2016-03-02 罗伯特·博世有限公司 Fuel injection valve for internal combustion engine

Also Published As

Publication number Publication date
US20030098015A1 (en) 2003-05-29
EP1310666A2 (en) 2003-05-14
DE10155412A1 (en) 2003-05-22

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