Ignition system for an internal combustion engine

Details Ignition system for an internal combustion engine Ignition system for an internal combustion engine

1981-10-20

1983-07-05

Argenbright, Tony M.

Internal-combustion engines

High tension ignition system

Having specific trigger circuitry

123609, F02P 100

Patent

active

043912621

ABSTRACT:
To provide sufficient ON-time to store adequate electromagnetic energy in an ignition coil (5, 6), even under high-speed engine operations, in which the ON time of an electronic ignition breaker switch (7, 8) and the OFF or ignition instant thereof is determined by a signal (U16) derived from an a-c type signal source, a signal processing stage (32) is interconnected between the signal source and the ignition signal triggering stage (9) which includes an integrator (27) which commences to integrate when, after an ignition event, the voltage from the signal source (16) has dropped to a predetermined level (Up), the integrated voltage being compared with a threshold level (Uc) to start the ON period of the switch (7, 8) even though the voltage from the signal source (16) may be below that reference level (Up), the output from the integrator and from the signal source being connected to an analog OR-gate (21, 30, 31, 33) which passes the higher one of the two signals, the integrator (27) thereupon being reset to permit commencing of integration upon the next cycle when the generator output voltage (U16) has again passed through the reference level (Up).

REFERENCES:
patent: 4019484 (1977-04-01), Mori
patent: 4086895 (1978-05-01), Habert
patent: 4176645 (1979-12-01), Jundt et al.
patent: 4328439 (1982-05-01), Adler et al.
patent: 4356808 (1982-11-01), Bodig et al.

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