Internal-combustion engines – High tension ignition system – Having dwell control
Patent
1980-04-04
1982-01-12
Cox, Ronald B.
Internal-combustion engines
High tension ignition system
Having dwell control
123611, F02P 100
Patent
active
043099734
ABSTRACT:
In an electronically controlled ignition device for a combustion engine, firstly an ignition timing and an energized angle of an ignition coil are calculated with response to running condition of the engine, secondly a non-energized angle of the ignition coil is calculated based on the result of the above calculation, thirdly the number of pulses generated with response to the angle of revolution of the engine is counted from the preceding ignition timing, so as to start the energizing of the ignition coil when the result of the above count coincides with the result of the above calculation of non-energized angle, and fourthly the number of pulses generated with response to the angle of revolution of the engine is counted from a reference position of revolution at which a reference pulse is generated by the revolution of the engine, so as to cut off the energizing of the ignition coil when the result of the above count of pulses coincides with the present ignition timing. Consequently, the ignition timing can be shifted with response to the running condition of the engine and the necessary energizing time duration for the ignition coil can be secured by correcting the energizing timing with response to the above shift of the ignition timing, so as to insure the energized time duration required for the ignition coil with a comparatively simple configuration.
REFERENCES:
patent: 3989024 (1976-11-01), Lai
patent: 4095576 (1978-06-01), Hahori
patent: 4162666 (1979-07-01), Maioglio
patent: 4225925 (1980-09-01), Hahori
Cox Ronald B.
Nissan Motor Company Ltd.
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