Electronic unit injector

Details Electronic unit injector Electronic unit injector

1987-11-02

1989-03-14

Miller, Carl S.

Internal-combustion engines

Charge forming device

Fuel injection system

123496, 123446, 123506, F02M 3400

Patent

active

048117153

ABSTRACT:
An electronic unit injector employs an expandable chamber which expands as pressure in the injector increases between a pair of threshold pressures. The expansion of the chamber results in a two-phase rate of injection of the injector whereby the initial injection rate is significantly lower than the second injection rate. In one embodiment, the expandable chamber is formed by a pin which is displaceable in a cap mounted to the injector body. The pin bottoms against the cap to define the phase transition.

REFERENCES:
patent: 4029071 (1977-06-01), Saito
patent: 4211203 (1980-07-01), Kobayashi
patent: 4526149 (1985-07-01), Hafele
patent: 4526150 (1985-07-01), Guntert
patent: 4622942 (1986-11-01), Nozaki
patent: 4718384 (1988-01-01), Takahashi

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