Valve device, especially injection valve for internal combustion engine, has electrically conducting valve body, electrically insulated integrated conducting valve needle guide in valve body that forms contact switch(es) with valve body

摘要

The valve device has an electrically conducting valve body and an electrically insulated integrated conducting valve needle guide (5) in the valve body that forms at least one contact switch with the valve body that closes or opens a circuit passing via the guide, valve needle (4) and valve body to generate an electrical signal depending on an associated movement of the valve needle relative to the valve body.