Udo Schulz

Method and apparatus for regulating voltages and voltage gradients for driving piezoelectric elements

Overall motor vehicle control

Method and apparatus for determining charge quantity during charging and discharging of piezoelectric elements

Method and device for controlling a piezo actuator

Piezoactuator e.g. for fuel injector in IC engine, is connected mechanically in series with sensor with stack of interacting piezo elements that produces signal proportional to mechanical displacement

Valve for controlling liquids has electronic control unit that defines piezoelectric valve element actuating unit drive voltage depending on leakage loss in low pressure region

Hybrid drive for use as e.g. internal combustion engine of passenger car, has hydraulically powered energy converter and combustible gas powered energy converter cooperated with each other and assigned to energy-storage systems

Method for the diagnosis of the voltage control for a piezoelectric actuator of an injection valve

Verfahren und Vorrichtung zum Betreiben von Steuereinrichtungen für ein Fahrzeug

Process for optimizing program parts for motor vehicle controllers