Fuel injection control system for controlling the fuel distribut

Details Fuel injection control system for controlling the fuel distribut Fuel injection control system for controlling the fuel distribut

1984-02-23

1985-08-06

Lall, Parshotam S.

Internal-combustion engines

Charge forming device

Alternate or simultaneous lean-rich

123480, 123419, F02M 5100

Patent

active

045329052

ABSTRACT:
A fuel injection valve is provided upstream of a branch-off part of a branched off intake passage, the downstream ends of the branched off passages being connected to a plurality of cylinders of an engine. The fuel injection timing of the injection valve is controlled by a pulse controller. The pulse controller operates to control the pulse timing basically according to the intake air flow and the crank angle of the crank shaft of the engine, and further corrects the timing according to the air fuel ratio difference between cylinders whose intake strokes are adjacent to each other. The correction rate of the timing may be changed according to the degree of the engine load and/or the engine temperature. By the correction of the timing, the air fuel mixture in rich cylinders is partly inhaled into lean cylinders so that the air fuel ratios of the cylinders may be equalized.

REFERENCES:
patent: 4301780 (1981-11-01), Hoshi
patent: 4357662 (1982-11-01), Schira et al.
patent: 4436073 (1984-03-01), Miyagi
patent: 4438496 (1984-03-01), Ohie

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