Fuel injection control device for use with an internal combustio

Details Fuel injection control device for use with an internal combustio Fuel injection control device for use with an internal combustio

1981-06-11

1984-07-10

Gruber, Felix D.

Boots, shoes, and leggings

123480, 123486, 123491, F02D 502, F02M 5100

Patent

active

044596707

ABSTRACT:
A fuel injection control device includes a microcomputer which determines a fuel injection amount based on the engine operation parameters. The microcomputer also actuates the fuel injection valve to open earlier in relation to the normal timing of fuel injection in response to turning on the starter switch. The fuel injection amount corresponds to the duration of opening of the fuel injection valve, and the opening duration of the fuel injection valve is defined by a driving signal and a stopping signal. The driving signal is generated at given angles of crank revolution. The driving signal is generated in response to a preset number of crank angle pulses, which is varied between the first fuel injecting operation and subsequent fuel injecting operations. The fuel injection timing of the first injecting operation is shorter than that of the remainder for improving start-up characteristics of the engine responsive to turning on the starter switch.

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