Starting-enrichment control for a fuel-injected engine

Details Starting-enrichment control for a fuel-injected engine Starting-enrichment control for a fuel-injected engine

1986-05-22

1987-09-08

Dolinar, Andrew M.

Internal-combustion engines

Charge forming device

Fuel injection system

F02D 4106

Patent

active

046916806

ABSTRACT:
The invention contemplates control circuitry applicable to an internal-combustion engine having electronic fuel injection, for fuel-priming upon cranking the engine to start the same. The circuitry is operative only when there is proper fuel pressure at the injectors, and the prime is immediate and simultaneous to all injectors. The duration of the prime is an inverse function of engine temperature. Once the priming fuel has been injected, there cannot be another priming injection until lapse of a period of time following completion of cranking, thus preventing engine-flooding in the event of a quick restart of the engine.

REFERENCES:
patent: 3812830 (1974-05-01), Traisnel
patent: 4134368 (1979-01-01), Hadley
patent: 4148282 (1979-04-01), Grassle et al.
patent: 4349000 (1982-09-01), Staerzl

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