Contactless ignition system for internal combustion engine

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

1980-01-17

1981-08-18

Myhre, Charles J.

Internal-combustion engines

Charge forming device

Fuel injection system

123416, 123415, F02P 508

Patent

active

042840465

ABSTRACT:
A contactless ignition system for the internal combustion engine comprises a first integrator for generating a triangular wave voltage V.sub.1 which rises at the minimum advance angle position and is held constant at the maximum advance angle position, a second integrator for generating a triangular wave voltage V.sub.2 which rises at the maximum advance angle position, a first comparator for generating an output signal in response to the coincidence between the first and second triangular wave voltages V.sub.1 and V.sub.2, a third integrator for generating a triangular wave voltage V.sub.3 which rises in response to an output signal generated from the first comparator, and a second comparator for generating an output signal in response to the coincidence between the first and third triangular wave voltages V.sub.1 and V.sub.3. An ignition signal is generated by the output of the second comparator. The change rate of the triangular wave voltage V.sub.2 is regulated in accordance with the engine operating condition, thus changing the advance angle width.

REFERENCES:
patent: 3418989 (1968-12-01), Silverman
patent: 3752139 (1973-08-01), Asplund
patent: 3874351 (1975-04-01), Asler et al.
patent: 3885534 (1975-05-01), Webster
patent: 3939811 (1976-02-01), Sasayama
patent: 4066968 (1978-01-01), Guipaud
patent: 4086894 (1978-05-01), Caparka et al.
patent: 4100895 (1978-07-01), Haddori et al.
patent: 4106440 (1978-08-01), Lai et al.
patent: 4164204 (1979-08-01), Guipaud

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