JPS57191451A - Mechanism for supplying compressed air to fuel injection valve - Google Patents

Mechanism for supplying compressed air to fuel injection valve

Info

Publication number
JPS57191451A
JPS57191451A JP7524881A JP7524881A JPS57191451A JP S57191451 A JPS57191451 A JP S57191451A JP 7524881 A JP7524881 A JP 7524881A JP 7524881 A JP7524881 A JP 7524881A JP S57191451 A JPS57191451 A JP S57191451A
Authority
JP
Japan
Prior art keywords
tip
needle valve
fuel
tip side
nozzle body
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.)
Pending
Application number
JP7524881A
Other languages
Japanese (ja)
Inventor
Hajime Yanagawa
Takayuki Motohashi
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.)
Bosch Corp
Original Assignee
Diesel Kiki Co 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
Application filed by Diesel Kiki Co Ltd filed Critical Diesel Kiki Co Ltd
Priority to JP7524881A priority Critical patent/JPS57191451A/en
Publication of JPS57191451A publication Critical patent/JPS57191451A/en
Pending 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
    • F02M67/00—Apparatus in which fuel-injection is effected by means of high-pressure gas, the gas carrying the fuel into working cylinders of the engine, e.g. air-injection type
    • F02M67/10—Injectors peculiar thereto, e.g. valve less type
    • F02M67/12—Injectors peculiar thereto, e.g. valve less type having valves

Abstract

PURPOSE:To remove carbon from the external periphery side of a projected part on the tip side of a needle valve and enable to inject sufficient fuel in a beginning period of injection, by a method wherein air compressed by moving a piston in a cylinder is jetted from the side of the tip, or a part in proximity to the tip, of a needle valve for a fuel injection valve. CONSTITUTION:A nozzle body 40 is connected to the tip side of a holder body 11 through a distance piece 12. The bodies 40, 11 are provided with holes 17, 18 for containing the needle valve 14 and a spring 16, respectively, and the needle valve 14 and a spring seat 15 are connected to each other through a projecting pin 19. Oil passages 22, 24 are connected to a fuel reservoir 20 in the nozzle body 40 and they are supplied with a fuel from the side of a connecting member 25. On the other hand, on the tip side of a pressure-receiving surface 21 provided at a part faced to the fuel reservoir 20, the tip side of the hole 29 formed in the nozzle body 40 is mated to the lower side of a seat part where a tapered surface 6 on the tip side of a small-dimaeter part 5 and a tapered surface 10 on the upper side of the hole 9 make contact with each other. The compressed air supplied through a sealing member 32 is jetted to the side of a precombustion chamber 27 through holes 31-29.
JP7524881A 1981-05-19 1981-05-19 Mechanism for supplying compressed air to fuel injection valve Pending JPS57191451A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7524881A JPS57191451A (en) 1981-05-19 1981-05-19 Mechanism for supplying compressed air to fuel injection valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7524881A JPS57191451A (en) 1981-05-19 1981-05-19 Mechanism for supplying compressed air to fuel injection valve

Publications (1)

Publication Number Publication Date
JPS57191451A true JPS57191451A (en) 1982-11-25

Family

ID=13570727

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7524881A Pending JPS57191451A (en) 1981-05-19 1981-05-19 Mechanism for supplying compressed air to fuel injection valve

Country Status (1)

Country Link
JP (1) JPS57191451A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01159462A (en) * 1987-09-02 1989-06-22 Toyota Motor Corp Fuel injection system for internal combustion engine
JPH01244159A (en) * 1988-02-12 1989-09-28 Outboard Marine Corp Internal combustion engine
JPH02223669A (en) * 1987-12-30 1990-09-06 Inst Fr Petrole Method for pneumatically injecting fuel into cylinder of alternative internal combustion engine and pneumatic injection device thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01159462A (en) * 1987-09-02 1989-06-22 Toyota Motor Corp Fuel injection system for internal combustion engine
JPH02223669A (en) * 1987-12-30 1990-09-06 Inst Fr Petrole Method for pneumatically injecting fuel into cylinder of alternative internal combustion engine and pneumatic injection device thereof
JPH01244159A (en) * 1988-02-12 1989-09-28 Outboard Marine Corp Internal combustion engine

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