OPERATION METHOD OF INJECTION VALVE

摘要

PROBLEM TO BE SOLVED: To provide a method for preventing a piezoelectric actuator from being deteriorated with an elapse of time as much as possible. SOLUTION: A voltage is reduced to a value lower than a hold voltage between two injections and a gradient of the voltage change is decreased, and the length change of the piezoelectric actuator is compensated by a connection element accordingly. COPYRIGHT: (C)2007,JPO&INPIT