Ignition timing control system for an internal combustion engine

Details Ignition timing control system for an internal combustion engine Ignition timing control system for an internal combustion engine

1986-06-16

1988-02-09

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Fuel injection system

123488, F02P 510, F02P 515

Patent

active

047235195

ABSTRACT:
An ignition timing control system mounted at an internal combustion engine, particularly, a non-surge tank type engine, is constituted by a crank angle sensor, an engine rotational speed sensor, an intake pipe air pressure sensor, and a microcomputer. In the microcomputer, an intake pipe air pressure correction unit for calculating a correction term and for obtaining a corrected intake pipe air pressure value, an optimal advanced angle calculation unit for obtaining an optimal advanced crank angle based on a control map having an optimal advanced angle between the corrected intake pipe air pressure and the engine rotational speed, and an ignition command unit for commanding an ON/OFF timing of a primary current of an ignition coil, are provided.

REFERENCES:
patent: 4412520 (1983-11-01), Mitsuyasu et al.
patent: 4633839 (1987-01-01), Yasuoka et al.

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