EP1236885A3 - Fuel injection device for an internal combustion engine - Google Patents

Fuel injection device for an internal combustion engine Download PDF

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Publication number
EP1236885A3
EP1236885A3 EP02002432A EP02002432A EP1236885A3 EP 1236885 A3 EP1236885 A3 EP 1236885A3 EP 02002432 A EP02002432 A EP 02002432A EP 02002432 A EP02002432 A EP 02002432A EP 1236885 A3 EP1236885 A3 EP 1236885A3
Authority
EP
European Patent Office
Prior art keywords
control valve
valve member
fuel injection
injection device
indirectly
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
EP02002432A
Other languages
German (de)
French (fr)
Other versions
EP1236885A2 (en
EP1236885B1 (en
Inventor
Matthias Dipl.-Ing. Beck
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
Priority claimed from DE10160256A external-priority patent/DE10160256A1/en
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1236885A2 publication Critical patent/EP1236885A2/en
Publication of EP1236885A3 publication Critical patent/EP1236885A3/en
Application granted granted Critical
Publication of EP1236885B1 publication Critical patent/EP1236885B1/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
    • 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
    • F02M45/12—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
    • 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
    • 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
    • F02M59/46—Valves
    • F02M59/466—Electrically operated valves, e.g. using electromagnetic or piezoelectric operating means

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)
  • Electromagnetism (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

Die Kraftstoffeinspritzeinrichtung weist eine Steuerventileinrichtung (60) mit wenigstens zwei elektrisch gesteuerten Steuerventilen (62,72) auf, die durch einen einzigen elektromagnetischen Aktor (64) gesteuert werden und die jeweils ein Steuerventilglied (63,73) aufweisen, das gegen eine Rückstellkraft zwischen wenigstens zwei Schaltstellungen bewegbar ist, wobei das Steuerventilglied (63) eines ersten Steuerventils (62) durch den Aktor (64) bewegbar ist und das Steuerventilglied (73) wenigstens eines zweiten Steuerventils (72) zumindest mittelbar durch das Steuerventilglied (63) des ersten Steuerventils (62) bewegbar ist. Durch das Steuerventilglied (63) des ersten Steuerventils (62) wird zumindest mittelbar ein kraftstoffgefüllter Koppelraum (71) begrenzt, wobei bei der Schaltbewegung des Steuerventilglieds (63) der Druck im Steuerdruckraum (71) verändert wird und das Steuerventilglied (73) des zweiten Steuerventils (72) zumindest mittelbar vom Druck im Koppelraum (71) beaufschlagt ist und durch die im Koppelraum (71) erfolgende Druckänderung zwischen seinen wenigstens zwei Schaltstellungen bewegbar ist.

Figure 00000001
Figure 00000002
The fuel injection device has a control valve device (60) with at least two electrically controlled control valves (62, 72) which are controlled by a single electromagnetic actuator (64) and which each have a control valve member (63, 73) which acts against a restoring force between at least is movable in two switching positions, the control valve member (63) of a first control valve (62) being movable by the actuator (64) and the control valve member (73) of at least one second control valve (72) at least indirectly by the control valve member (63) of the first control valve ( 62) is movable. The control valve member (63) of the first control valve (62) delimits, at least indirectly, a fuel-filled coupling space (71), the pressure in the control pressure chamber (71) being changed during the switching movement of the control valve member (63) and the control valve member (73) of the second control valve (72) is acted upon at least indirectly by the pressure in the coupling space (71) and can be moved between its at least two switching positions by the pressure change taking place in the coupling space (71).
Figure 00000001
Figure 00000002
EP20020002432 2001-02-28 2002-02-01 Fuel injection device for an internal combustion engine Expired - Lifetime EP1236885B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10109612 2001-02-28
DE10109612 2001-02-28
DE10160256A DE10160256A1 (en) 2001-02-28 2001-12-07 Fuel injection device for an internal combustion engine
DE10160256 2001-12-07

Publications (3)

Publication Number Publication Date
EP1236885A2 EP1236885A2 (en) 2002-09-04
EP1236885A3 true EP1236885A3 (en) 2004-01-21
EP1236885B1 EP1236885B1 (en) 2005-03-30

Family

ID=26008644

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020002432 Expired - Lifetime EP1236885B1 (en) 2001-02-28 2002-02-01 Fuel injection device for an internal combustion engine

Country Status (1)

Country Link
EP (1) EP1236885B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE366359T1 (en) * 2003-12-12 2007-07-15 Delphi Tech Inc INJECTION VALVE WITH CONTROL VALVE THAT CONTROLS THE PRESSURE IN THE CONTROL ROOM
US7255091B2 (en) * 2005-05-31 2007-08-14 Caterpillar, Inc. Fuel injector control system and method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0823549A2 (en) * 1996-08-06 1998-02-11 Lucas Industries Public Limited Company Injector
DE19742320A1 (en) * 1997-09-25 1999-04-01 Bosch Gmbh Robert Fuel injector
DE19837332A1 (en) * 1998-08-18 2000-02-24 Bosch Gmbh Robert Control unit for controlling the build up of pressure in a pump unit such as an internal combustion engine fuel pump

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0823549A2 (en) * 1996-08-06 1998-02-11 Lucas Industries Public Limited Company Injector
DE19742320A1 (en) * 1997-09-25 1999-04-01 Bosch Gmbh Robert Fuel injector
DE19837332A1 (en) * 1998-08-18 2000-02-24 Bosch Gmbh Robert Control unit for controlling the build up of pressure in a pump unit such as an internal combustion engine fuel pump

Also Published As

Publication number Publication date
EP1236885A2 (en) 2002-09-04
EP1236885B1 (en) 2005-03-30

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