Fuel injector for an engine

Details Fuel injector for an engine Fuel injector for an engine

1988-11-04

1990-03-20

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

Injection nozzle opened by relieving supply

2395338, 2395339, 123467, 25112907, 310328, F02M 6120

Patent

active

049094408

ABSTRACT:
A fuel injector comprising a piston actuated by a piezoelectric element. A pressure control chamber is formed between the piston and the top face of the needle and connected to a high pressure fuel source via a fuel passage having a restricted flow area. The pressure control chamber is filled with fuel under pressure. The rear face of the piston, which is positioned opposite to the pressure control chamber, is exposed to a high pressure fuel chamber filled with fuel under pressure. The driving force acting on the piston due to the pressure of fuel in the pressure control chamber is cancelled by the driving force acting on the piston due to the pressure of fuel in the high pressure fuel chamber.

REFERENCES:
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patent: 4535743 (1985-08-01), Igashira et al.
patent: 4553059 (1985-11-01), Abe et al.
patent: 4579283 (1986-04-01), Igashira et al.
patent: 4688536 (1987-08-01), Mitsuyasu et al.
patent: 4725002 (1988-02-01), Trachte
patent: 4732129 (1988-03-01), Takigawa et al.
patent: 4750706 (1988-06-01), Schlagmuller
patent: 4762300 (1988-08-01), Inagaki et al.
patent: 4784102 (1988-11-01), Igashira et al.
patent: 4803393 (1989-02-01), Takahashi
Copending U.S. patent application No. 84557 filing date '87 8/12, now U.S. Pat. No. 4,782,807.
Copending U.S. patent application No. 73155, filing date '87 7/14, now U.S. Pat. No. 4,803,393.
Copening U.S. patent application No. 141784, filing date '88 1/11, now U.S. Pat. No. 4,814,659.

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