Digital ignition system

Details Digital ignition system Digital ignition system

1990-12-20

1992-04-21

Argenbright, Tony M.

Internal-combustion engines

Engine speed regulator

Engine speed reduction by partial or complete omission of...

123416, 123625, 123643, 36443104, F02P 1512, F02P 515, F02D 1700

Patent

active

051057832

ABSTRACT:
A method of and apparatus for enabling at least one spark plug of a internal combustion engine to provide a fuel igniting spark at a selectable time in the engine cycle is disclosed. Sensors provide a first engine rotation determined pulse train the repetition rate of which is the same as the number of revolutions per second of the engine and a second engine rotation determined pulse train the repetition rate of which is an integral multiple of that of the first pulse train. The reference pulse initiates a count of pulses in the second pulse train and, upon reaching a preselected count, initiates a count of pulses in a third independent pulse train having a much greater repetition rate. The spark plug is enabled when the third pulse train count reaches a preselected count. In the event the engine is a multi-cylinder engine having at least one spark plug for each cylinder, the pulses in the second pulse train are counted up to different preselected counts for different cylinders and a different spark plug is enabled for each different preselected count.

REFERENCES:
patent: 4099507 (1978-07-01), Pagel et al.
patent: 4494509 (1985-01-01), Long
patent: 4606315 (1986-08-01), Tobinaga et al.

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