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US 6,684,866 B2Granted
Ignition system for an internal combustion engine
AssigneeRobert Bosch GmbH
InventorsHorst Meinders, Wolfgang Feiler
Life of this patent
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Abstract
An ignition system is for an internal combustion engine having an ignition device that requires a high voltage (ignition voltage) for igniting the ignition spark. Two ignition coils are provided, which have secondary windings that are each connected to electrodes of a spark plug, which have primary windings that may be connected in each case by a switching arrangement to a supply voltage source, and a drive circuit, via which the ignition coils are driven in a time-displaced manner.
Claims9
An ignition system for an internal combustion engine, comprising:
- an ignition device that requires a high voltage to ignite an ignition spark;
- a spark plug;
- two switching arrangements;
- two ignition coils having secondary windings each connected to electrodes of the spark plug and primary windings connectable via a corresponding switching arrangement to a supply voltage source;
- and
- a drive circuit configured to drive the ignition coils in a time-displaced manner.
3 more elements
Dependencies are inferred from the claim text.