Ignition device for an internal combustion engine
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United States of America Patent
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Dec 17, 2013
Grant Date -
Feb 14, 2008
app pub date -
Apr 25, 2007
filing date -
May 12, 2006
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An ignition device for an internal combustion engine includes an ignition coil which is feedable on its primary side by a voltage supply unit, a secondary current measuring device for measuring the course of the secondary side current, a control device for at least temporary controlling of the primary side voltage or the primary side current in dependence on the measured course of the secondary side current. Subsequent to an interruption of the primary side voltage or current supply of the ignition coil during an ignition process or subsequent to the drop of the primary side voltage or the primary side current in the ignition coil below a predeterminable threshold during the ignition process, the control device energizes or regulates the primary side voltage or current supply of the ignition coil above the predeterminable threshold only when the secondary side current induced thereby acts in the direction of the predetermined course of the secondary side current.
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