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US 12,736,024 B2Granted
Ignition system and control method
AssigneesClean Combustion Engine Technology Inc., Weichai Torch Technology Co., Ltd.
InventorsMing Zheng, Guangyun Chen, Xiao Yu, Ying Peng, Jin Qian, Linyan Wang
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Abstract
An ignition system is provided. The ignition system includes at least one ignition module, which has an input end to receive control signal from the ECU, and an output end to supply ignition energy to the spark gap. The ignition module provides on-demand ignition energy based on an engine operation conditions with adaptively controlled discharge current amplitude and duration using prompt feedback signals measurement of the plasma impedance.
Claims20
A method to control an ignition system, comprising following steps:
- S1, spark initiation, utilizing a dedicated ignition coil to build up high voltage to establish a plasma channel;
- S2, continuous discharge process, supplying a constant discharge current after establishment of the plasma channel;
- and
- S3, plasma diagnostic during a continuous discharge process, dynamically adjusting a discharge current amplitude based on a feedback signal from a plasma impedance to avoid blow-off and restrike of the plasma channel due to an in-cylinder flow, wherein the ignition system comprises:
- at least one ignition module, wherein the at least one ignition module comprises:
- an input end, configured to receive a command from an electronic control unit;
- and
- an output end, electrically coupled to a spark plug, wherein the output end is configured to deliver spark energy to a spark gap,
- wherein the at least one ignition module is configured to supply the spark energy adaptively based on engine operation conditions.
6 more elements
Dependencies are inferred from the claim text.