Injection valve e.g. pump-nozzle unit has cooling line which exhibits first throttle in direction of flow before spring chamber and after spring chamber cooling line has exhibits second throttle in direction of flow

摘要

An injection pump-nozzle unit has a cooling line (36, 39) which exhibits a first throttle (38) in the direction of flow before the spring chamber and after the spring chamber (41) the cooling line has exhibits a second throttle (51) in the direction of flow. Injection has a housing whereby a fuel pipe is connected with a control valve and with a pressure chamber.