Method and system for controlling the spark ignition of ignition elements in an internal combustion engine
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United States of America Patent
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-
Nov 22, 1988
Grant Date -
N/A
app pub date -
Jan 7, 1988
filing date -
May 14, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Disclosed is a method and system for controlling, in a multi-cylinder four-stroke internal combustion engine, the spark ignition in at least two cylinders, the pistons of which simultaneously assume a top dead center position. The method and system achieve a more reliable start with low supply voltage. For this purpose, the charging and discharging of an ignition capacitor is controlled by a control unit in such a way that, when the pistons in a pair of cylinders pass through the same crankshaft angle range close to the top dead center position, ignition is generated in first one and then the other of the pair of cylinders. Between the times for generating the ignition, the ignition capacitor is charged as a function of supply voltage so that a full charge is utilized for generating the ignition sparks in the cylinders.
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