| 摘要 |
PROBLEM TO BE SOLVED: To improve durability of a plasm type ignition device more by restricting over-discharge after ignition. SOLUTION: This plasma type ignition device 1 is structured of an ignition plug 10 and a high-energy power source formed of a trigger discharge means 20, which comprises a power source 21, an ignition coil 23 for raising voltage of the power source 21 and an ignition coil driving circuit 24 to be controlled to be opened/closed by an electronic control device 25 so as to control drive of the ignition coil 23, and a plasma energy supply means 30, which comprises a plasma generating capacitor 33 to be charged by a power source 31. This plasma type ignition device 1 ignites an internal combustion engine 40, maintaining gas inside of a discharge space 140 in plasma condition, by applying high-voltage Vsc from the trigger discharge means 20 and supplying large current Ipl from the plasma energy supply means 30. At this point, discharge from the trigger discharge means 20 is set at 60μsec or less. COPYRIGHT: (C)2009,JPO&INPIT
|
