Electronic fuel injection control with variable injection timing

Details Electronic fuel injection control with variable injection timing Electronic fuel injection control with variable injection timing

1985-06-26

1987-02-03

Wolfe, Jr., Willis R.

Internal-combustion engines

Charge forming device

Fuel injection system

123478, F02M 5100

Patent

active

046402535

ABSTRACT:
In an electronic fuel injection control system for an internal combustion engine having an odd number of cylinders wherein the fuel injection is performed by supplying fuel injection valves with a fuel injection pulse signal having a duration indicative of the quantity of fuel to be injected into the engine and two injection pulse signals are generated in each engine cycle on the basis of ignition signals, the first injection pulse signal is generated in response to the first ignition signal in each engine cycle and the second injection pulse signal is generated after the elapse of an additional period of time from the generation of (m+1)/2.sup.th ignition signal where m represents the number of cylinders. The additional period of time is basically established to the half of an ignition interval and is trimmed in accordance with the variation of engine speed.

REFERENCES:
patent: 3855973 (1974-12-01), Scofield
patent: 4058709 (1977-11-01), Long
patent: 4180023 (1979-12-01), Kobayashi et al.
patent: 4226215 (1980-10-01), Kobayashi et al.
patent: 4407258 (1983-10-01), Ruf
patent: 4543936 (1985-10-01), Gardner

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