Metering unit for suction-side flow control of bio diesel fuel in low pressure region of common-rail pump, has electromagnetic controllable valve provided with displaceable stored valve piston made of plastic corrosion resistant or aluminum

摘要

The unit has an electromagnetic controllable valve (1) provided with a displaceable stored valve piston (2) that is made of material selected from one of plastic corrosion resistant material or aluminum. A fuse element (4) is attached with a spring (3) along axial direction of the valve piston. A fuel-washed component of the valve is made of plastic corrosion resistant material or aluminum. A sealing ring (9) seals an actuator unit in relation to fuel-prominent volume of the valve. A plastic housing (10) surrounds an actuator unit and seals outwardly.