Pilot injection device for fuel injection pump

Details Pilot injection device for fuel injection pump Pilot injection device for fuel injection pump

1989-06-26

1991-07-23

Miller, Carl Stuart

Internal-combustion engines

Charge forming device

With fuel pump

123300, 123516, F02M 3704

Patent

active

050334433

ABSTRACT:
A pilot injection device for a fuel injection pump has an accumulate piston movable in response to a fuel pressure from a pressurizing chamber of the fuel injection pump to cause a pilot injection prior to a main injection by the pump. The device is provided with a back-pressure chamber filled with fuel and having a volume variable by the movement of the accumulate piston. Air trapped in the back-pressure chamber can be removed therefrom through a hole to improve the operation characteristic of the pilot injection device.

REFERENCES:
patent: 3456629 (1969-07-01), Dangauthier
patent: 4469069 (1984-09-01), Kuroyanagi et al.
patent: 4530337 (1985-07-01), Gaufer
patent: 4625694 (1986-12-01), Adey
patent: 4694810 (1987-09-01), Miyamoto
patent: 4831986 (1989-05-01), Linder
patent: 4831991 (1989-05-01), Cayot
patent: 4840155 (1989-06-01), Karle
Patent Abstracts of Japan, vol. 10, No. 291 (M-522)(2347) Oct. 3, 1986 & JP-A-61 106971 (Diesel Kiki) 24 May 1986.
Patent Abstracts of Japan, vol. 12, No. 227 (M-713)(3074) Jun. 28, 1988, & JP-A-63-21359 (Nippon Denso) 28 Jan. 1988.

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