| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technology of extending the service life of a spark plug that generates spark discharge and AC plasma. <P>SOLUTION: This plasma ignition device 20 includes a power control part 510 for reducing AC power P after generation of the AC plasma in an AC power supply period Sa for continuously supplying AC power P to the spark plug 100 within a maintenance power range Rp for maintaining the AC plasma. <P>COPYRIGHT: (C)2012,JPO&INPIT |
