Contactless ignition system for internal combustion engine

Details Contactless ignition system for internal combustion engine Contactless ignition system for internal combustion engine

1979-06-15

1981-01-20

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Fuel injection system

123418, 123611, F02P 504

Patent

active

042456002

ABSTRACT:
A contactless ignition system of current interruption type for an internal combustion engine comprising at least one pulser device sensing a predetermined maximum advance position and a predetermined minimum advance position of the ignition timing to generate an output signal indicative of such advance positions. On the basis of the output signal of the pulser, a first ramp signal having a first gradient and a second ramp signal having a second gradient are produced, and a signal representing the sum of a reference signal of a constant level and the second ramp signal is compared in a comparator with the first ramp signal. When level coincidence is reached between these two signals, the comparator generates a control signal controlling the turn-on position of a semiconductor switch which controls the ignition timing, so that the duration of current supply for ignition can be maintained substantially constant throughout the rotation speed ranges of the engine.

REFERENCES:
patent: 3705573 (1972-12-01), Palazzetti et al.
patent: 3888220 (1975-06-01), Bigalke et al.
patent: 4122807 (1978-10-01), Hosaka et al.
patent: 4142490 (1979-03-01), Hosaka et al.
patent: 4164204 (1979-08-01), Guipaud
patent: 4201163 (1980-05-01), Hattori et al.

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