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GB1487778A - Fuel injection device - Google Patents

Fuel injection device

Info

Publication number
GB1487778A
GB1487778A GB5594274A GB5594274A GB1487778A GB 1487778 A GB1487778 A GB 1487778A GB 5594274 A GB5594274 A GB 5594274A GB 5594274 A GB5594274 A GB 5594274A GB 1487778 A GB1487778 A GB 1487778A
Authority
GB
United Kingdom
Prior art keywords
bore
fuel
passage
diameter
pipe
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.)
Expired
Application number
GB5594274A
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.)
Isuzu Motors Ltd
Original Assignee
Isuzu Motors Ltd
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 JP375074A external-priority patent/JPS5095620A/ja
Priority claimed from JP74467A external-priority patent/JPS5415975B2/ja
Priority claimed from JP9194074U external-priority patent/JPS537149Y2/ja
Priority claimed from JP9194274U external-priority patent/JPS537151Y2/ja
Priority claimed from JP9194174U external-priority patent/JPS537150Y2/ja
Application filed by Isuzu Motors Ltd filed Critical Isuzu Motors Ltd
Publication of GB1487778A publication Critical patent/GB1487778A/en
Expired legal-status Critical Current

Links

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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • 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
    • 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

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

1487778 Fuel injection nozzles ISUZU MOTORS Ltd 27 Dec 1974 [26 Dec 1973 28 Dec 1973 1 Aug 1974 (3)] 55942/74 Heading F1B A fuel injection device comprises an injection pipe 4 connected to nozzle holder 5 and a fuel flow passage through the pipe and holder, wherein the fuel flow passage is reduced in diameter in a direction toward the end of the nozzle holder to which a nozzle is to be attached, with the ratio of the smallest effective flow passage cross-sectional area of the fuel passage in the nozzle holder to that in the injection pipe being between 0À5 and 0À15 and the length of the passage in the nozzle holder being no greater than 90 times the diameter of the passage in the injection pipe so that fluctuation of fuel pressure in the injection pipe is converted to that of kinetic energy thereby to control abnormalities of fuel injection. Inlet pipe 4 is connected to nozzle holder 5 by adapter 52 which has a bore 53 leading to a smaller diameter bore 51 through which fuel flows to the injection nozzle. If the bore diameter of pipe 4 is D 1 , diameter of bore 53 is D 2 and diameter of bore 51 is D 3 , then either D 1 # D2 > D 3 or D 1 > D 2 # D 3 . The cross-sectional area of the bore 51 is 0À5 to 0À15 of the cross-sectional area of the inlet pipe 4. The length of the fuel oil passage 51 is 30 to 90 times the bore diameter of pipe 4. Construction. To form the long small bore passage 51, three methods are described:- (a) A plastics tube 55 in which the passage 51 has been drilled is inserted in a bore 54 in the nozzle holder. (b) A plastics material 55' is cast into bore 54 and subsequently drilled. (c) A plastics material is cast into bore 54 around a piano wire core which is subsequently removed.
GB5594274A 1973-12-26 1974-12-27 Fuel injection device Expired GB1487778A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP375074A JPS5095620A (en) 1973-12-26 1973-12-26
JP74467A JPS5415975B2 (en) 1973-12-28 1973-12-28
JP9194074U JPS537149Y2 (en) 1974-08-01 1974-08-01
JP9194274U JPS537151Y2 (en) 1974-08-01 1974-08-01
JP9194174U JPS537150Y2 (en) 1974-08-01 1974-08-01

Publications (1)

Publication Number Publication Date
GB1487778A true GB1487778A (en) 1977-10-05

Family

ID=27517961

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5594274A Expired GB1487778A (en) 1973-12-26 1974-12-27 Fuel injection device

Country Status (2)

Country Link
DE (1) DE2461309A1 (en)
GB (1) GB1487778A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0088937A1 (en) * 1982-03-12 1983-09-21 Mitsubishi Jukogyo Kabushiki Kaisha Fuel injection device
WO1984000792A1 (en) * 1982-08-19 1984-03-01 Bosch Gmbh Robert Fuel injection device for internal combustion engines
WO2004005699A1 (en) * 2002-07-02 2004-01-15 Siemens Aktiengesellschaft Injector for an injection system

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2344722A1 (en) * 1976-03-15 1977-10-14 Semt PRESSURE WAVE DAMPING DEVICE IN A FUEL INJECTION SYSTEM OF AN INTERNAL COMBUSTION ENGINE
DE4202396A1 (en) * 1992-01-29 1993-08-05 Man Nutzfahrzeuge Ag INJECTION DEVICE FOR AIR COMPRESSING INTERNAL COMBUSTION ENGINES
US5775303A (en) * 1995-06-30 1998-07-07 Cummins Engine Company, Inc. High Pressure Fuel Line Connection
DE19535368C2 (en) * 1995-09-25 1998-04-30 Bosch Gmbh Robert Fuel injection device for internal combustion engines
DE10122353B4 (en) 2001-05-09 2004-04-22 Robert Bosch Gmbh Fuel injector

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0088937A1 (en) * 1982-03-12 1983-09-21 Mitsubishi Jukogyo Kabushiki Kaisha Fuel injection device
US4526151A (en) * 1982-03-12 1985-07-02 Mitsubishi Jukogyo Kabushiki Kaisha Fuel injection device
WO1984000792A1 (en) * 1982-08-19 1984-03-01 Bosch Gmbh Robert Fuel injection device for internal combustion engines
WO2004005699A1 (en) * 2002-07-02 2004-01-15 Siemens Aktiengesellschaft Injector for an injection system

Also Published As

Publication number Publication date
DE2461309A1 (en) 1975-07-10

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19941226