Ignition control device
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United States of America Patent
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Nov 21, 2017
Issued Date -
N/A
app pub date -
Jul 4, 2014
filing date -
Jul 11, 2013
priority date (Note) -
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Abstract
An ignition control device includes a control unit to control first to third switching elements so that during ignition discharge, which is started by turning off the first switching element, energy stored on a capacitor is discharged by turning off the third switching element and turning on the second switching element for supplying a primary current to an end of a primary winding opposite to an end thereof connected to a direct-current power supply. During inductive discharge of a spark plug, the control unit non-intermittently turns on the second switching element so that the second switching element is turned on over a successive energy input time period, according to the operating conditions of an internal combustion engine.
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