Spark timing control system

Details Spark timing control system Spark timing control system

1981-08-10

1984-01-31

Shaw, Gareth D.

Boots, shoes, and leggings

36443103, 36443104, 123414, 123417, G05B 1500, F02P 500

Patent

active

044293658

ABSTRACT:
A spark timing control system for an uneven firing engine utilizes a microprogrammed engine controller which produces a spark timing control system based on internal calculations using spark advance and dwell variables supplied by a microcomputer. A crankshaft position transducer produces a reference signal having alternate long and short pulses from which the firing cycle may be determined. The microcomputer is interrupted at each falling edge of the reference signal and based on a determination of the existing firing cycle, calculates and supplies appropriate spark advance and dwell numbers to the controller.

REFERENCES:
patent: 3830207 (1974-08-01), Joseph
patent: 3943898 (1976-03-01), Kiencke
patent: 4231091 (1980-10-01), Motz
patent: 4262644 (1981-04-01), Walker et al.
patent: 4355360 (1982-10-01), Asano et al.
patent: 4360874 (1982-11-01), Ohba et al.

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