| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a multiple discharge type ignition device alternately repeating capacitive discharge and inductive discharge and having relatively high degree of freedom even if a structure is simple with one switching element in a control circuit. <P>SOLUTION: The ignition coil 4 having magnetic coupling structure in which magnetic coupling of a primary coil 41 and a secondary coil 42 is set good when spark discharge current is low and is set bad when spark discharge current is high is used for the multiple discharge type ignition device having a structure charging energy charged in an energy accumulation coil when the switching element is on and discharged when the same is off to a charge and discharge capacitor, and a structure having the primary coil of the ignition coil 4 put in a discharge path of the capacitor. Consequently, the ignition device of high degree of freedom in design is provided without being easily influenced by connection and contamination condition of a spark plug. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
