Ignition timing controlling device for an engine

Details Ignition timing controlling device for an engine Ignition timing controlling device for an engine

1993-09-09

1995-02-28

Nelli, Raymond A.

Internal-combustion engines

Charge forming device

Fuel injection system

F02P 500

Patent

active

053927486

ABSTRACT:
A device for controlling an ignition timing of an engine wherein a basic ignition timing map classified based on a revolution number and an intake quantity of the engine is provided in a main body of a control device and a target ignition timing of the engine is set based on the basic ignition timing map, said main body of a control device comprising: an idling state detecting means for detecting that the engine is in an idling state; and an ignition timing limiting means for comparing a basic ignition timing read from the basic ignition timing map with a predetermined limited ignition timing when the idling state detecting means detects the idling state and selecting the limited ignition timing as the target ignition timing when the basic ignition timing is retarded compared with the limited ignition timing.

REFERENCES:
patent: 4823753 (1989-04-01), Murakami et al.
patent: 4996958 (1991-03-01), Iwata et al.
patent: 5140961 (1992-08-01), Sawamoto et al.

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