Andreas Dr. Kappel

Ausgleichselement zur Kompensation temperaturbedingter Längenänderungen von elektromechanischen Stellsystemen

Hydraulic device for transmitting an actuator movement

Efficient class-B analog amplifier for a piezoelectric actuator drive

Thermal expansion compensation element

Non-invasive temperature sensor for process technology, power stations, chemical plant and food production

Device for driving electromagnetic actuator, e.g. for combustion engine injection valve, passes reverse current through solenoid during magnetic flux decay

Fuel injector valve for diesel and petrol engines with piezoelectric actuator enclosed in cooling fluid

Multilayer piezoelectric actuator

High pressure injection valve for direct fuel injection with fluid cooling and filling process, has electrically insulating heat conductive fluid around the valve needle piezo actuator

Cylindrical spring especially as bias or reaction spring for piezoelectric multilayer actuator in diesel common rail injector