Distributorless ignition system for multicylinder internal-combu

Details Distributorless ignition system for multicylinder internal-combu Distributorless ignition system for multicylinder internal-combu

1981-04-08

1983-10-25

Lall, Parshotam S.

Internal-combustion engines

High tension ignition system

Power supply, ignition coil primary, and interrupter element...

357 13, 357 76, F02P 500

Patent

active

044112475

ABSTRACT:
An ignition system of the type incorporating, instead of the usual distributor, high-voltage rectifier diodes connected between the secondary winding of an ignition coil and respective spark plugs. In response to voltages developed in the secondary winding in its opposite directions the diodes function to cause discharges at the spark plugs in the firing order of the engine. Each diode is composed of a multiplicity of laminated silicon rectifier diode chips each having a reverse breakdown voltage in the range of 400-850 volts. The reverse breakdown voltage of each diode is 1.1 to 1.8 times the maximum discharge voltage of the spark plugs. Thus constructed, the diodes can well withstand overvoltages that may develop in the secondary circuit of the ignition system.

REFERENCES:
patent: 2985797 (1961-05-01), Williams et al.
patent: 3264531 (1966-08-01), Dickson, Jr.
patent: 3274454 (1966-09-01), Haberecht
patent: 3319136 (1967-05-01), Perry et al.
patent: 3662233 (1972-05-01), Clerc et al.
patent: 3910247 (1975-10-01), Hartig
patent: 4262295 (1981-04-01), Okano et al.
"Automotive", Electronics, vol. 51, No. 9, pp. 40-41, Apr. 27, 1978.

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