EP1176306A3 - Fuel injection system for internal combustion engine - Google Patents

Fuel injection system for internal combustion engine Download PDF

Info

Publication number
EP1176306A3
EP1176306A3 EP01117509A EP01117509A EP1176306A3 EP 1176306 A3 EP1176306 A3 EP 1176306A3 EP 01117509 A EP01117509 A EP 01117509A EP 01117509 A EP01117509 A EP 01117509A EP 1176306 A3 EP1176306 A3 EP 1176306A3
Authority
EP
European Patent Office
Prior art keywords
pressure
fuel injection
valve member
pressure chamber
valve
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Withdrawn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
EP01117509A
Other languages
German (de)
French (fr)
Other versions
EP1176306A2 (en
Inventor
Achim Brenk
Uwe Gordon
Wolfgang Klenk
Manfred Mack
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 to DE2000136578 priority Critical patent/DE10036578A1/en
Priority to DE10036578 priority
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1176306A2 publication Critical patent/EP1176306A2/en
Publication of EP1176306A3 publication Critical patent/EP1176306A3/en
Application status is Withdrawn legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00Other 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
    • F02M63/0003Fuel-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
    • F02M63/0005Fuel-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 valves actuated by fluid pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00Other 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
    • F02M63/0003Fuel-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
    • F02M63/0007Fuel-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

Abstract

Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen mit einem Hochdrucksammelraum (10), der über eine Hochdruckleitung (12) mit wenigstens einem Kraftstoffeinspritzventil (15) verbunden ist, wobei in der Hochdruckleitung (12) ein Steuerventil (40) angeordnet ist, welches eine in einem Ventilkörper (41) ausgebildete Bohrung (43) und ein darin längsverschiebbar angeordnetes, kolbenförmiges Ventilglied (42) umfaßt. Fuel injection device for internal combustion engines having a high-pressure collecting space (10), which is connected via a high pressure line (12) with at least one fuel injection valve (15), wherein in the high pressure line (12) a control valve (40) is arranged, which is a in a valve body (41) formed bore (43) and a therein longitudinally displaceable arranged, piston-shaped valve member (42). Zwischen der Wand der Bohrung (43) und dem Ventilglied (42) ist ein erster Druckraum (60) und dazu axial versetzt ein zweiter Druckraum (62) ausgebildet, welcher erste Druckraum (60) mit dem Hochdrucksammelraum (10) und welcher zweite Druckraum (62) mit dem Kraftstoffeinspritzventil (15) verbunden und mit einem ersten Leckölraum (59) verbindbar ist. Between the wall of the bore (43) and the valve member (42) is a first pressure chamber (60) and to axially offset a second pressure chamber (62) formed, said first pressure chamber (60) to the high-pressure collecting space (10) and said second pressure chamber ( 62) connected to the fuel injection valve (15) and is connectable with a first oil leakage chamber (59). Das Ventilglied (42) steuert die Verbindung der beiden Druckräume (60; 62) durch eine Längsbewegung zwischen einer Öffnungs- und einer Schließposition, welche Positionen den Gesamthub (h g ) des Ventilglieds (42) begrenzen. The valve member (42) controls the connection of the two pressure chambers (60; 62) by a longitudinal movement between an open and a closed position which positions the total stroke (h g) of the valve member (42) limit. An dem dem ersten Druckraum (60) abgewandten Ende des Ventilglieds (42) ist ein Drosselabschnitt (70) angeordnet, der dichtend in der Bohrung (43) beweglich ist und der bei der Öffnungshubbewegung des Ventilglieds (42) nach einem Teil des Gesamthubs (h g ) in die Bohrung (43) eintaucht (Figur 2). a throttle portion (70) is arranged on the said first pressure chamber (60) facing away from the end of the valve member (42) sealingly in the bore (43) is movable and in the opening stroke of the valve member (42) (according to a part of the total stroke h g) in the bore (43) is immersed (Figure 2).
EP01117509A 2000-07-27 2001-07-20 Fuel injection system for internal combustion engine Withdrawn EP1176306A3 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE2000136578 DE10036578A1 (en) 2000-07-27 2000-07-27 Fuel injection unit for internal combustion engine has slide valve formed by cylindrical end section of control valve element and constructed as throttling section and protruding into first overflow oil chamber
DE10036578 2000-07-27

Publications (2)

Publication Number Publication Date
EP1176306A2 EP1176306A2 (en) 2002-01-30
EP1176306A3 true EP1176306A3 (en) 2003-03-05

Family

ID=7650390

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01117509A Withdrawn EP1176306A3 (en) 2000-07-27 2001-07-20 Fuel injection system for internal combustion engine

Country Status (3)

Country Link
EP (1) EP1176306A3 (en)
JP (1) JP2002054523A (en)
DE (1) DE10036578A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10337574A1 (en) * 2003-08-14 2005-03-10 Bosch Gmbh Robert Fuel injection device for internal combustion engines
JP2007321611A (en) * 2006-05-31 2007-12-13 Niigata Power Systems Co Ltd Accumulation type fuel injection device
DE102007016418A1 (en) * 2007-04-05 2008-10-09 Man Diesel Se Temperature control of the switching valve unit in injection

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0657643A2 (en) * 1993-12-07 1995-06-14 Robert Bosch Gmbh Fuel injection device for internal combustion engines
DE19701879A1 (en) * 1997-01-21 1998-07-23 Bosch Gmbh Robert Fuel injection device for internal combustion engines
WO1999015783A1 (en) * 1997-09-24 1999-04-01 Robert Bosch Gmbh Fuel injection device for internal combustion engines

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0657643A2 (en) * 1993-12-07 1995-06-14 Robert Bosch Gmbh Fuel injection device for internal combustion engines
DE19701879A1 (en) * 1997-01-21 1998-07-23 Bosch Gmbh Robert Fuel injection device for internal combustion engines
WO1999015783A1 (en) * 1997-09-24 1999-04-01 Robert Bosch Gmbh Fuel injection device for internal combustion engines

Also Published As

Publication number Publication date
JP2002054523A (en) 2002-02-20
EP1176306A2 (en) 2002-01-30
DE10036578A1 (en) 2002-02-07

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