Device for controlling a fuel feed pump used for an engine

Details Device for controlling a fuel feed pump used for an engine Device for controlling a fuel feed pump used for an engine

1990-03-23

1991-12-10

Miller, Carl Stuart

Internal-combustion engines

Charge forming device

With fuel pump

123456, F02M 3704

Patent

active

050708481

ABSTRACT:
A device for controlling a fuel feed pump comprising a fuel spill passage and a spill control valve arranged in the fuel spill passage. The spill control valve is controlled by the pressure of fuel in a pressure chamber, and the pressure of the pressure chamber is controlled by the piezoelectric element. When the piezoelectric element is driven, the pressure of the pressure chamber is increased, and thus the spill control valve is closed. When the engine speed is high, the piezoelectric element is driven at each 360 degrees of rotation of the crankshaft. Conversely, when the engine speed is low, the piezoelectric element is driven at each 120 degrees rotation of the crankshaft.

REFERENCES:
patent: 4700672 (1987-10-01), Baguena
patent: 4704999 (1987-11-01), Hashikawa
patent: 4730585 (1988-03-01), Abe
patent: 4753212 (1988-06-01), Miyaki
patent: 4782807 (1988-11-01), Takahashi et al.
patent: 4793314 (1988-12-01), Yoshinaga
patent: 4838233 (1989-06-01), Hayashi

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