Digital timing method for spark advance

Details Digital timing method for spark advance Digital timing method for spark advance

1982-10-29

1986-03-11

Chin, Gary

Boots, shoes, and leggings

36443112, 123416, 123418, F02P 504

Patent

active

045758093

ABSTRACT:
A means to set spark timing in accordance with engine speed includes a counter to count clock pulses between engine speed reference pulses. A read-only memory has successive memory locations each storing an addend quantity and a repeats number. An adder unit, including an accumulator, operates to access the memory locations, and to add the addend quantities to the contents of the accumulator repeatedly a number of times equal to the respective repeats numbers. A comparator produces an ignition firing pulse when the contents of the accumulator corresponds with the reference period number provided by the counter.

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