Fuel injection device for internal combustion engine, has valve unit arranged in housing and composed of several parts including control piston and nozzle needle, where piston and needle are coupled to each other via hydraulic coupler
摘要
<p>The device has a housing (22) and a valve unit (32) arranged in the housing, where the valve unit cooperates with a valve seat that is located in an area of a fuel discharge opening (42). The valve unit is composed of several parts including control piston and a nozzle needle (36), where piston and the nozzle needle are coupled to each other via a hydraulic coupler. The piston and nozzle needle are guided into a housing part of the device. The parts of the valve unit have constant diameter.</p>
