Method for controlling ignition timing of internal combustion en

Details Method for controlling ignition timing of internal combustion en Method for controlling ignition timing of internal combustion en

1979-06-12

1980-11-18

Myhre, Charles J.

Internal-combustion engines

Charge forming device

Fuel injection system

1231465A, 123425, F02P 514

Patent

active

042339448

ABSTRACT:
A method for controlling the ignition timing for the internal combustion engine is disclosed. When it is decided that the engine load is large on the basis of the engine number of revolutions per minute and intake pressure. If the engine is in the knocking condition, a step lead angle is added to the present lead angle value in the range between a set lead angle and a minimum lead angle. If the engine is not in the knocking condition, on the other hand, a step lead angle is subtracted from the present lead angle value in the above-mentioned range. By contrast, when it is decided that the engine load is small on the basis of the engine r.p.m. and intake pressure. The lead angle control of the present lead angle value is stopped so that the present lead angle is set at the above-mentioned set lead angle or the minimum lead angle value.

REFERENCES:
patent: 4002155 (1977-01-01), Harned et al.
patent: 4120272 (1978-10-01), Douaud et al.
patent: 4153020 (1979-05-01), King et al.

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