Method for energizing an HF resonant circuit which has an igniter as a component for igniting a fuel-air mixture in a combustion chamber
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United States of America Patent
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Mar 10, 2015
Grant Date -
Mar 8, 2012
app pub date -
Aug 22, 2011
filing date -
Sep 4, 2010
priority date (Note) -
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Abstract
The invention relates to a method for energizing an HF resonant circuit which contains an igniter as a component for igniting a fuel-air mixture in a combustion chamber of an internal combustion engine by means of a corona discharge, wherein the igniter comprises an ignition electrode and an insulator surrounding the ignition electrode, by means of a DC-AC inverter which is excited by successive current pulses which each last while a switch controlled by a control circuit is in its conducting switching state. It is provided according to the invention that the switch is actuated when an instantaneous value of an alternating current or an alternating current voltage excited in the HF resonant circuit falls below a first switching threshold (A−, B−, C−) and the switch s actuated when the instantaneous value of the alternating current or the alternating current voltage excited in the HF resonant circuit exceeds a second switching threshold (A+, B+, C+).
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