Electronic fuel injection system for internal combustion engine

Details Electronic fuel injection system for internal combustion engine Electronic fuel injection system for internal combustion engine

1986-04-02

1987-05-05

Nelli, Raymond A.

Internal-combustion engines

Charge forming device

Fuel injection system

123326, F02M 5100, F02D 906

Patent

active

046623400

ABSTRACT:
A fuel injection apparatus in an internal combustion engine, which comprises a fuel injection valve device for supplying the engine with fuel, an air flow rate detector for detecting a quantity of air sucked by the engine, a detector for detecting a revolutional speed of the engine, apparatus for determining whether the engine is in a highly loaded state or not, and a control arrangement for calculating a basic pulse width of a valve opening pulse for the injection valve device on the basis of respective output signals of the respective detectors. The control arrangement is arranged to add a first valve-opening pulse width correction value to the calculated fundamental pulse width on the basis of a correction map predetermined corresponding to various values of the revolutional speed of the engine to thereby obtain a corrected pulse width, and to further add a second valve-opening pulse width correction value to the corrected pulse width on the basis of a predetermined high-load correction map when the engine is in a highly loaded state, thereby making small the variation in air fuel ratio in performing the power correction in the engine.

REFERENCES:
patent: 4513723 (1985-04-01), Ishikawa et al.
patent: 4528964 (1985-07-01), Kashiwaya et al.
patent: 4561404 (1985-12-01), Kanno et al.
patent: 4590564 (1986-05-01), Ishikawa et al.
patent: 4590912 (1986-05-01), Atago

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