Fuel supply system

Details Fuel supply system Fuel supply system

2005-04-19

2005-04-19

Huynh, Hai (Department: 3747)

Internal-combustion engines

Charge forming device

Fuel injection system

C123S490000

Reexamination Certificate

active

06880530

ABSTRACT:
A fuel supply system detects the detects operating condition of an engine, calculates the width of the fuel injection pulse including valve-opening signal and holding signal based on the detected operating condition, and supplies valve-opening current to the solenoid located in the fuel injector based on the fuel injection pulse width and a holding current for holding the valve-opening condition after the valve-opening current has reached the predetermined current value. Current is supplied to the solenoid when the logical product of the valve-opening signal and the holding signal has been formed. The fuel supply system diagnoses an abnormality of the fuel injector when the time period from the start of the fuel injection pulse until the valve-opening current reaches the predetermined current value is shorter than the predetermined one.

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European Search Report mailed Feb. 6, 2004.

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