Method of determining the opening period of an injection valve for a combustion engine determines an electrical quantity of a piezoelectric control element and optimizes opening and closing with control function

摘要

A method of determining the opening period of an injection valve controlled by a piezoelectric element comprises following the course over time of electrical quantities that determine opening and closing. The signals for opening and closing the valve (10) can be formed by functions through an optimization process and the opening and closing times of the closing element found.