EP1617072A3 - 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
EP1617072A3
EP1617072A3 EP05103971A EP05103971A EP1617072A3 EP 1617072 A3 EP1617072 A3 EP 1617072A3 EP 05103971 A EP05103971 A EP 05103971A EP 05103971 A EP05103971 A EP 05103971A EP 1617072 A3 EP1617072 A3 EP 1617072A3
Authority
EP
European Patent Office
Prior art keywords
fuel
pressure
fuel injection
pump
combustion engine
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Withdrawn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
EP05103971A
Other languages
German (de)
French (fr)
Other versions
EP1617072A2 (en
Inventor
Hans-Joachim Schulz
Klaus Lang
Thomas Fuhrich
Andreas Sommerer
Jeff Spencer
Todd Foote
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 EP1617072A2 publication Critical patent/EP1617072A2/en
Publication of EP1617072A3 publication Critical patent/EP1617072A3/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Withdrawn legal-status Critical Current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
    • 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
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements
    • F02M2200/315—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements for damping fuel pressure fluctuations
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

Die Kraftstoffeinspritzeinrichtung weist jeweils eine Kraftstoffhochdruckpumpe (10) und ein mit dieser verbundenes Kraftstoffeinspritzventil (12) für jeweils einen 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 mit dem Kraftstoffeinspritzventil (12) verbunden ist. Es ist ein elektrisch betätigtes Steuerventil (23) vorgesehen, durch das zumindest mittelbar eine Verbindung (21) des Pumpenarbeitsraums (22) mit einem Niederdruckbereich (54) gesteuert wird, wobei das Steuerventil (23) beim Förderhub des Pumpenkolbens (18) zu einer Kraftstoffeinspritzung geschlossen wird und zu einer Beendigung der Kraftstoffeinspritzung geöffnet wird, wobei unter Hochdruck stehender Kraftstoff in den Niederdruckbereich (54) abgesteuert wird. In der Verbindung (21) des Pumpenarbeitsraums (22) mit dem Niederdruckbereich (54) ist zwischen dem Steuerventil (23) und dem Niederdruckbereich (54) eine Druckschwingungsdämpfungseinrichtung (62) angeordnet.

Figure imgaf001
The fuel injection device has in each case a high-pressure fuel pump (10) and a fuel injection valve (12) connected thereto 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 space (22) which is connected to the fuel injection valve (12). An electrically actuated control valve (23) is provided, by which at least indirectly a connection (21) of the pump working chamber (22) is controlled with a low-pressure region (54), wherein the control valve (23) during the delivery stroke of the pump piston (18) to a fuel injection is closed and is opened to a termination of the fuel injection, wherein high-pressure fuel is diverted into the low-pressure region (54). In the connection (21) of the pump working chamber (22) with the low-pressure region (54), a pressure-vibration damping device (62) is arranged between the control valve (23) and the low-pressure region (54).
Figure imgaf001
EP05103971A 2004-07-17 2005-05-12 Fuel-injection device for an internal combustion engine Withdrawn EP1617072A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200410034672 DE102004034672A1 (en) 2004-07-17 2004-07-17 Fuel injection device for an internal combustion engine

Publications (2)

Publication Number Publication Date
EP1617072A2 EP1617072A2 (en) 2006-01-18
EP1617072A3 true EP1617072A3 (en) 2006-05-17

Family

ID=35149383

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05103971A Withdrawn EP1617072A3 (en) 2004-07-17 2005-05-12 Fuel-injection device for an internal combustion engine

Country Status (2)

Country Link
EP (1) EP1617072A3 (en)
DE (1) DE102004034672A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006027780A1 (en) 2006-06-16 2007-12-20 Robert Bosch Gmbh fuel injector
GB2538711A (en) * 2015-05-22 2016-11-30 Delphi Automotive Systems Lux Damper for high pressure fuel pump
DE102016209546A1 (en) * 2016-06-01 2017-12-07 Robert Bosch Gmbh Fuel injection valve

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19844891A1 (en) * 1998-09-30 2000-04-06 Bosch Gmbh Robert Fuel injection valve for internal combustion engines
DE10000384A1 (en) * 2000-01-07 2001-07-12 Volkswagen Ag Damper for fuel injection pressure fluctuations comprises variable volume body or elastic layer or fuelproofly sheathed body or air volume directly at pump intake for immediate pressure smoothing.
EP1411236A2 (en) * 2002-10-19 2004-04-21 Robert Bosch Gmbh Device for damping of pressure pulsations in a fluid system, especially in a fuel system of an internal combustion engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19844891A1 (en) * 1998-09-30 2000-04-06 Bosch Gmbh Robert Fuel injection valve for internal combustion engines
DE10000384A1 (en) * 2000-01-07 2001-07-12 Volkswagen Ag Damper for fuel injection pressure fluctuations comprises variable volume body or elastic layer or fuelproofly sheathed body or air volume directly at pump intake for immediate pressure smoothing.
EP1411236A2 (en) * 2002-10-19 2004-04-21 Robert Bosch Gmbh Device for damping of pressure pulsations in a fluid system, especially in a fuel system of an internal combustion engine

Also Published As

Publication number Publication date
EP1617072A2 (en) 2006-01-18
DE102004034672A1 (en) 2006-02-16

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