Ignition system for a multi-cylinder internal combustion engine

Details Ignition system for a multi-cylinder internal combustion engine Ignition system for a multi-cylinder internal combustion engine

1982-07-30

1984-04-10

Lall, Parshotam S.

Internal-combustion engines

High tension ignition system

Using capacitive storage and discharge for spark energy

123620, 123643, 123609, 123143B, F02P 500

Patent

active

044414790

ABSTRACT:
An ignition system for a multi-cylinder internal combustion engine having a spark plug within each engine cylinder, wherein a single DC-DC converter is provided and a high-voltage withstanding characteristic capacitor is provided for each spark plug. The capacitor charges to the high DC output voltage of the DC-DC converter and operatively supplies the high DC voltage via a boosting transformer into the corresponding spark plug at a predetermined ignition timing. The amount of the discharge energy being varied according to the pulse width of an input signal of each switching circuit which operates to supply the charged high DC voltage of the capacitor into the corresponding spark plug, the pulse width being varied according to various engine operating conditions.

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patent: 3805759 (1974-04-01), Fitzner
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patent: 4359037 (1982-11-01), Stangl
patent: 4366801 (1983-01-01), Endo et al.
patent: 4369758 (1983-01-01), Endo
patent: 4398526 (1983-08-01), Hamai et al.
patent: 4399802 (1983-08-01), Oshiage et al.

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