Method for operating internal combustion engine of motor vehicle, involves opening and closing injection valve with piezoelectric actuator, in which voltage is applied and shorted at piezoelectric actuator

摘要

The method involves opening and closing an injection valve (1) with a piezoelectric actuator (2), in which a voltage is applied and shorted at the piezoelectric actuator. A pressure is detected in a combustion chamber (4) with the piezoelectric actuator, in which a voltage is measured, where the voltage is generated by the piezoelectric actuator. The detection of pressure is calibrated with the piezoelectric actuator. The piezoelectric actuator is compressed according to the pressure in the combustion chamber.