Ignition control system and ignition control device
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United States of America Patent
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Jan 26, 2021
Grant Date -
Sep 26, 2019
app pub date -
Jun 14, 2019
filing date -
Dec 15, 2016
priority date (Note) -
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Abstract
An ignition control system includes a spark plug including a cylindrical ground electrode, a cylindrical insulator having a protruding portion held inside the ground electrode and protruding toward a tip side the spark plug relative to the ground electrode, and a center electrode held inside the insulator and exposed from the insulator, an ignition coil including a primary coil and a secondary coil, and a primary current control unit performing creeping discharge control for generating a creeping discharge along a surface of the insulator, and air discharge transition control for stopping the creeping discharge occurring in the spark plug after the creeping discharge control is performed, and cutting off primary current after a discharge stop period ends, in one combustion cycle of the engine.
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