| 摘要 |
PROBLEM TO BE SOLVED: To provide a solenoid valve system for an internal combustion engine capable of applying a current neither more nor less for initialization (for holding intake and exhaust valves open or closed). SOLUTION: A lift peak value Li at the maximum amplitude immediately before the seating of an armature 4 is detected in a step 206. According to the conditions of a step 210 and a step 212, the current value Ic flowing to a coil or the coil current flowing time Tc is increased/decreased by the fixed value in a step 214 and a step 216 respectively and fed back at the time of following initialization.
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