| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a plasma type ignition device which prevents damage for an internal combustion due to wrong injection of a plasma jet, and wrong ignition due to a charge voltage of a PJ capacitor even if a requested voltage of an ignition plug decreases. <P>SOLUTION: A plasma power source circuit 100 of the plasma type ignition device is provided with a voltage restriction circuit 3 that has a first specified voltage VCL1 whose absolute value is lower than that of a discharge voltage of an ignition coil 31, and a second specified voltage VCL2 whose absolute value is higher than that of the ignition coil discharge voltage. In accordance with operation conditions of the internal combustion, the first specified voltage VCL1 and the second specified voltage VCL2 are selectively switched. <P>COPYRIGHT: (C)2012,JPO&INPIT |
