Jochen Doehring

Fuel injector has hydraulic coupler unit equipped with coupler piston and valve piston, where coupler piston and valve piston are guided together in coupler body in axially movable manner

Vorratstank für ein flüssiges Medium mit einer Ansaugvorrichtung und einer Filtereinrichtung

Exhaust gas after-treatment device for internal-combustion engine, has seal provided between dosing module and exhaust pipe, where seal is made of small heat conductivity material

Exhaust after treatment system for post-treatment of nitrogen oxide in exhaust gas of self-ignition internal combustion engine of vehicle, has pressure line comprising ice pressure compensation line that is provided with hose wall

Ice pressure protection device for actuatable valve i.e. injection valve, of motor car, has valve element whose inner side holds closing element that is attached to aperture in bottom part of valve element for forming non-return valve

Plastic pipe connector for connecting metering valves of motor car, has supply conduit provided with connection passage for conducting liquid medium and running in sections in helical shape and end sections aligned with each other

Filtering device for use in reducing agent suction device to filter solution of highly pure urea in combustion engine for post-treatment of nitrogen oxide in catalytic converter, has helical suction tube arranged in suction element

Valve assembly for internal combustion engine, has valve seat arranged in region of connection piece of exhaust gas duct, and cooling device engaged with exhaust gas duct facing end of metering valve in circumferential direction

Tank for storing liquid reducing agent to reduce nitrogen oxides into nitrogen and water from exhaust gas of internal combustion engine of vehicle, has tank bladder with rigidly formed blister base adjustable with respect to covering base

Fuel injector with piezoelectric actuator and hydraulic coupler