EP0688950A1 - Système d'injection de carburant - Google Patents

Système d'injection de carburant Download PDF

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Publication number
EP0688950A1
EP0688950A1 EP95107822A EP95107822A EP0688950A1 EP 0688950 A1 EP0688950 A1 EP 0688950A1 EP 95107822 A EP95107822 A EP 95107822A EP 95107822 A EP95107822 A EP 95107822A EP 0688950 A1 EP0688950 A1 EP 0688950A1
Authority
EP
European Patent Office
Prior art keywords
injection
fuel
valve
pressure
valve needle
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
EP95107822A
Other languages
German (de)
English (en)
Other versions
EP0688950B1 (fr
Inventor
Maximilian Dr. Kronberger
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 EP0688950A1 publication Critical patent/EP0688950A1/fr
Application granted granted Critical
Publication of EP0688950B1 publication Critical patent/EP0688950B1/fr
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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid 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
    • 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
    • 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
    • F02M45/08—Injectors peculiar thereto
    • 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
    • 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
    • F02M2200/28—Details of throttles in fuel-injection apparatus

Definitions

  • the pump working chamber 10 is supplied with fuel via a suction line 15, which is supplied by a suction chamber 17, which is essentially only shown in broken lines and is enclosed within the housing of the fuel injection pump.
  • the suction chamber receives fuel from a fuel delivery pump 18 which is synchronous with the fuel injection pump, e.g. B. is driven by the drive shaft and thus promotes fuel in speed-dependent amounts in the suction chamber.
  • a fuel delivery pump 18 which is synchronous with the fuel injection pump, e.g. B. is driven by the drive shaft and thus promotes fuel in speed-dependent amounts in the suction chamber.
  • an additional pressure control valve 19 With the help of an additional pressure control valve 19, the pressure in the suction chamber is usually controlled as a function of speed, if with the help of this Pressure additional functions of the fuel injection pump to be controlled.
  • Fuel continuously flows back to the reservoir 23 via an overflow throttle 22, so that cooling of the injection pump or degassing of the suction chamber is ensured.
  • the cross section of the throttle opening 54 is the largest and is then increasingly reduced due to the upward movement of the valve needle with the inclined lateral boundary wall of the recess 50 forming the trapezoidal shape.
EP95107822A 1994-06-21 1995-05-23 Système d'injection de carburant Expired - Lifetime EP0688950B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4421714A DE4421714A1 (de) 1994-06-21 1994-06-21 Kraftstoffeinspritzsystem
DE4421714 1994-06-21

Publications (2)

Publication Number Publication Date
EP0688950A1 true EP0688950A1 (fr) 1995-12-27
EP0688950B1 EP0688950B1 (fr) 1998-08-12

Family

ID=6521151

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95107822A Expired - Lifetime EP0688950B1 (fr) 1994-06-21 1995-05-23 Système d'injection de carburant

Country Status (5)

Country Link
US (1) US5533481A (fr)
EP (1) EP0688950B1 (fr)
JP (1) JPH0821337A (fr)
KR (1) KR100377894B1 (fr)
DE (2) DE4421714A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998011342A1 (fr) * 1996-09-11 1998-03-19 Daimler-Benz Aktiengesellschaft Moteur a combustion interne diesel fonctionnant par injection de carburant
WO2008031903A1 (fr) * 2006-09-12 2008-03-20 Vicorgilta, S.L. Garde-corps de sécurité pour travaux

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5954487A (en) * 1995-06-23 1999-09-21 Diesel Technology Company Fuel pump control valve assembly
US6045054A (en) * 1998-04-23 2000-04-04 Siemens Automotive Corporation Air shroud for air assist fuel injector
GB2339451A (en) * 1998-07-10 2000-01-26 Lucas Ind Plc A fuel injector with control chamber and a damped needle valve
DE19834120A1 (de) * 1998-07-29 2000-02-03 Bosch Gmbh Robert Kraftstoffversorgungsanlage einer Brennkraftmaschine
US6089470A (en) * 1999-03-10 2000-07-18 Diesel Technology Company Control valve assembly for pumps and injectors
US6158419A (en) * 1999-03-10 2000-12-12 Diesel Technology Company Control valve assembly for pumps and injectors
DE19930832A1 (de) * 1999-07-03 2001-01-11 Bosch Gmbh Robert Kraftstoffeinspritzventil
DE19947194A1 (de) * 1999-10-01 2001-04-05 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
US6450778B1 (en) 2000-12-07 2002-09-17 Diesel Technology Company Pump system with high pressure restriction
DE10112426A1 (de) * 2001-03-15 2002-09-19 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
DE10119603A1 (de) * 2001-04-21 2002-10-24 Bosch Gmbh Robert Kraftsotffeinspritzeinrichtung für eine Brennkraftmaschine
DE10201529A1 (de) * 2002-01-17 2003-07-31 Volkswagen Ag Pumpe-Düse-Element für eine Brennkraftmaschine
DE202005009909U1 (de) * 2005-06-23 2006-10-26 Liebherr-Aerospace Lindenberg Gmbh Federsystem
DE102006062491A1 (de) * 2006-12-28 2008-07-03 Robert Bosch Gmbh Vorrichtung zur Dosierung von Kraftstoff zum Abgassystem eines Verbrennungsmotors
CN114635818A (zh) * 2022-03-09 2022-06-17 哈尔滨工程大学 一种利用柔性液压阻尼实现共轨喷油器稳定喷射的高速电磁阀

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3644257A1 (de) 1985-12-27 1987-07-02 Diesel Kiki Co Kraftstoffeinspritzpumpe
WO1990008257A1 (fr) * 1989-01-12 1990-07-26 Voest-Alpine Automotive Gesellschaft M.B.H. Injecteur de carburant
WO1990008296A1 (fr) 1989-01-18 1990-07-26 Mogilevsky Tekhnologichesky Institut Installation de traitement thermique de matieres polydispersees

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI88333C (fi) * 1991-06-25 1993-04-26 Waertsilae Diesel Int Foerbaettrat insprutningsventilarrangemang foer braensle
DE69212754T2 (de) * 1991-09-27 1997-02-27 Nippon Denso Co Kraftstoffeinspritzanlage mit geteilter Kraftstoffeinspritzung für Dieselmotoren
DE4230641A1 (de) * 1992-09-12 1994-03-17 Bosch Gmbh Robert Kraftstoff-Einspritzdüse mit Additiveinspritzung für Dieselmotoren
JPH07145750A (ja) * 1993-11-25 1995-06-06 Zexel Corp 燃料噴射制御装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3644257A1 (de) 1985-12-27 1987-07-02 Diesel Kiki Co Kraftstoffeinspritzpumpe
WO1990008257A1 (fr) * 1989-01-12 1990-07-26 Voest-Alpine Automotive Gesellschaft M.B.H. Injecteur de carburant
WO1990008296A1 (fr) 1989-01-18 1990-07-26 Mogilevsky Tekhnologichesky Institut Installation de traitement thermique de matieres polydispersees

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998011342A1 (fr) * 1996-09-11 1998-03-19 Daimler-Benz Aktiengesellschaft Moteur a combustion interne diesel fonctionnant par injection de carburant
US6244249B1 (en) 1996-09-11 2001-06-12 Daimlerchrysler Ag Fuel-injection diesel internal-combustion engine
WO2008031903A1 (fr) * 2006-09-12 2008-03-20 Vicorgilta, S.L. Garde-corps de sécurité pour travaux

Also Published As

Publication number Publication date
JPH0821337A (ja) 1996-01-23
KR960001469A (ko) 1996-01-25
KR100377894B1 (ko) 2003-05-22
DE59503133D1 (de) 1998-09-17
EP0688950B1 (fr) 1998-08-12
US5533481A (en) 1996-07-09
DE4421714A1 (de) 1996-01-04

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