Ignition timing control system for internal combustion engine

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

1990-09-11

1991-09-17

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Fuel injection system

123609, F02P 500

Patent

active

050484877

ABSTRACT:
A system for controlling ignition timing of an internal combustion engine which is capable of securing adequate ignition energy in all engine operation regions including acceleration or high speed engine operation. The retard limit for ignition timing is determined with respect to engine speed. A ratio of dwell angle on an ignition coil to a prescribed angle is calculated and compared with reference value. When the ratio is found to exceed the reference value, the retard limit is changed in advance direction so that ignition timing is caused to be advanced. Misfirings are thus avoided.

REFERENCES:
patent: 4440141 (1984-04-01), Tsujimura et al.
patent: 4516554 (1985-05-01), Miura et al.
patent: 4558684 (1985-12-01), Caddy et al.
patent: 4933861 (1990-06-01), Allen et al.

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