Fuel injection system for internal combustion engine

Details Fuel injection system for internal combustion engine Fuel injection system for internal combustion engine

1985-03-25

1986-09-09

Greenlief, Magdalen Y. C.

Internal-combustion engines

Charge forming device

Fuel injection system

123357, F02M 3900

Patent

active

046102337

ABSTRACT:
A fuel injection system for in internal combustion engine includes a solenoid valve disposed across a fuel passage defined in a fuel injection pump and actuatable under the control of a control circuit for controlling the fuel injection quantity and the fuel injection timing. The actual fuel injection quantity is detected by a sensor disposed in the solenoid valve and fed back to the electric circuit where it is compared with the objective fuel injection quantity determined on the basis of engine operating conditions. If there is a difference, the fuel injection quantity supplied to the internal combustion engine through the solenoid valve is changed by the control circuit in a measured manner which will tend to make this difference disappear. The control of the fuel injection timing can be achieved by the system substantially the same manner as described above. The sensor comprises an electric on-off switch defined jointly by a valve seat and a valve element of the solenoid valve.

REFERENCES:
patent: 3896779 (1975-07-01), Omori et al.
patent: 4475507 (1984-10-01), Miyaki et al.
patent: 4494507 (1985-01-01), Yasuhara
patent: 4520780 (1985-06-01), Ito et al.
patent: 4523569 (1985-06-01), Seilly et al.

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