EP1273796A3 - High pressure fuel pump especially for direct injection internal combustion engine and fuel system and internal combustion engine - Google Patents

High pressure fuel pump especially for direct injection internal combustion engine and fuel system and internal combustion engine Download PDF

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Publication number
EP1273796A3
EP1273796A3 EP02009419A EP02009419A EP1273796A3 EP 1273796 A3 EP1273796 A3 EP 1273796A3 EP 02009419 A EP02009419 A EP 02009419A EP 02009419 A EP02009419 A EP 02009419A EP 1273796 A3 EP1273796 A3 EP 1273796A3
Authority
EP
European Patent Office
Prior art keywords
internal combustion
combustion engine
pressure
fuel pump
low
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
EP02009419A
Other languages
German (de)
French (fr)
Other versions
EP1273796A2 (en
EP1273796B1 (en
Inventor
Helmut Rembold
Wolfgang Buesser
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 EP1273796A2 publication Critical patent/EP1273796A2/en
Publication of EP1273796A3 publication Critical patent/EP1273796A3/en
Application granted granted Critical
Publication of EP1273796B1 publication Critical patent/EP1273796B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • F04B49/225—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves with throttling valves or valves varying the pump inlet opening or the outlet opening
    • 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
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F04B1/0452—Distribution members, e.g. valves

Landscapes

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

Abstract

Eine Hochdruck-Kraftstoffpumpe (10), welche insbesondere für direkteinspritzende Brennkraftmaschinen verwendet wird, umfasst ein Gehäuse (12), welches einen Niederdruck-Einlass (20) und einen Hochdruck-Auslass (22) aufweist. In dem Gehäuse (12) ist ein Pumpraum (34) vorhanden, welcher mit dem Niederdruck-Einlass (20) und dem Hochdruck-Auslass (22) verbindbar ist. Ferner ist ein Steuerventil (38) vorgesehen, welches den Pumpraum (34 mit dem Niederdruck-Einlass (20) verbinden kann und zum Niederdruck-Einlass (20) hin öffnet. Auch ein Rückschlagventil (36) mit einem vom Steuerventil (38) separaten Ventilelement (76) ist vorhanden, welches zwischen Niederdruck-Einlass (20) und Pumpraum (34) angeordnet ist und zum Pumpraum (34) hin öffnet. Um den Aufbau der Hochdruck-Kraftstoffpumpe (10) zu vereinfachen, wird vorgeschlagen, dass das Rückschlagventil (36) und das Steuerventil (38) in einem gemeinsamen Ventilmodul (44) untergebracht sind, welches wenigstens bereichsweise in das Pumpengehäuse (12) eingesetzt ist und für das Steuerventil (38) und das Rückschlagventil (36) einen gemeinsamen Anschluss (64) zum Niederdruck-Einlass (20) hin aufweist.

Figure 00000001
A high-pressure fuel pump (10), which is used in particular for direct-injection internal combustion engines, comprises a housing (12) which has a low-pressure inlet (20) and a high-pressure outlet (22). In the housing (12) there is a pump chamber (34) which can be connected to the low pressure inlet (20) and the high pressure outlet (22). A control valve (38) is also provided which can connect the pump chamber (34) to the low pressure inlet (20) and opens towards the low pressure inlet (20.) A check valve (36) with a valve element separate from the control valve (38) (76) is present, which is arranged between the low-pressure inlet (20) and the pump chamber (34) and opens towards the pump chamber (34). To simplify the construction of the high-pressure fuel pump (10), it is proposed that the check valve ( 36) and the control valve (38) are accommodated in a common valve module (44) which is at least partially inserted into the pump housing (12) and for the control valve (38) and the check valve (36) a common connection (64) for low pressure -Inlet (20) has.
Figure 00000001
EP02009419A 2001-05-18 2002-04-25 High pressure fuel pump especially for direct injection internal combustion engine and fuel system and internal combustion engine Expired - Lifetime EP1273796B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10124238 2001-05-18
DE10124238A DE10124238A1 (en) 2001-05-18 2001-05-18 High pressure fuel pump, especially for direct-injection internal combustion engine, has non-return and control valves in common valve module, common connector to low pressure inlet

Publications (3)

Publication Number Publication Date
EP1273796A2 EP1273796A2 (en) 2003-01-08
EP1273796A3 true EP1273796A3 (en) 2003-11-19
EP1273796B1 EP1273796B1 (en) 2005-06-01

Family

ID=7685259

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02009419A Expired - Lifetime EP1273796B1 (en) 2001-05-18 2002-04-25 High pressure fuel pump especially for direct injection internal combustion engine and fuel system and internal combustion engine

Country Status (3)

Country Link
EP (1) EP1273796B1 (en)
JP (1) JP2002349391A (en)
DE (2) DE10124238A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT504433B8 (en) * 2006-11-07 2008-09-15 Bosch Gmbh Robert PUMP ELEMENT FOR A COMMON RAIL HIGH PRESSURE PUMP
WO2008107065A1 (en) * 2007-03-06 2008-09-12 Ixetic Bad Homburg Gmbh Pump having a magnetically actuated control valve for suction regulation
JP2009287733A (en) * 2008-05-30 2009-12-10 Denso Corp Solenoid valve, fluid pump provided with solenoid valve, and fluid injection device provided with solenoid valve
DE102008062518B4 (en) * 2008-12-16 2016-05-25 Continental Automotive Gmbh high pressure pump
DE102010062451A1 (en) * 2010-12-06 2012-06-06 Robert Bosch Gmbh Change-over valve i.e. flow control valve, for installation in high pressure pump of internal combustion engine of motor vehicle, has stop for valve needle formed by concave cavity of valve body, where cavity is rotationally symmetrical
DE102011005485A1 (en) 2011-03-14 2012-09-20 Robert Bosch Gmbh Valve device for switching or metering a fluid

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0078983A1 (en) * 1981-11-07 1983-05-18 Robert Bosch Gmbh Fuel injection apparatus for internal-combustion engines
EP0816672A2 (en) * 1996-07-05 1998-01-07 Nippon Soken, Inc. High-pressure pump for use in fuel injection system for diesel engine
WO2000006894A1 (en) * 1998-07-29 2000-02-10 Robert Bosch Gmbh Fuel supply system of an internal combustion engine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4343280A (en) * 1980-09-24 1982-08-10 The Bendix Corporation Fuel delivery control arrangement

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0078983A1 (en) * 1981-11-07 1983-05-18 Robert Bosch Gmbh Fuel injection apparatus for internal-combustion engines
EP0816672A2 (en) * 1996-07-05 1998-01-07 Nippon Soken, Inc. High-pressure pump for use in fuel injection system for diesel engine
WO2000006894A1 (en) * 1998-07-29 2000-02-10 Robert Bosch Gmbh Fuel supply system of an internal combustion engine

Also Published As

Publication number Publication date
EP1273796A2 (en) 2003-01-08
EP1273796B1 (en) 2005-06-01
DE50203241D1 (en) 2005-07-07
JP2002349391A (en) 2002-12-04
DE10124238A1 (en) 2002-11-28

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