Spark ignition timing control system for spark ignition internal

Details Spark ignition timing control system for spark ignition internal Spark ignition timing control system for spark ignition internal

1987-10-16

1988-10-04

Nelli, Raymond A.

Internal-combustion engines

Combustion chamber means combined with air-fuel mixture...

123416, F02P 514

Patent

active

047749229

ABSTRACT:
A spark ignition timing control system takes a feature of storing spark advance angle data in MBT mode upon switching control mode from MBT mode to anti-knock level exceeding a predetermined level. The stored spark advance angle is read and set as initial spark advance angle upon resuming MBT mode control after anti-knock mode control. It may also be possible to vary the spark advance angle value to be used as initial spark advance angle in resumption of the MBT control according to variation of the spark advance angle in anti-knock mode control. Variation of the stored advance angle according to regarding magnitude of the spark advance in anti-knock mode will prevent the spark ignition timing control from causing hunting in switching of the control mode.

REFERENCES:
patent: 4374472 (1983-02-01), Nishimura
patent: 4711213 (1987-12-01), Sakakibara et al.
patent: 4711214 (1987-12-01), Sakakibara et al.
patent: 4715342 (1987-12-01), Nagai
patent: 4716873 (1988-01-01), Takaba et al.

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