High pressure fuel injection unit for a combustion engine has pressure and lift controls and exchangeable inserts in the valve element

摘要

A fuel injector for a combustion engine comprises valve (2) and injector (68) bodies, a nozzle moved by an electronic operating unit (7) with return spring (33,34), a low pressure return (4) and high pressure feed (5). The injector valve has pressure leads (31) and connecting hydraulic spaces (21,22) with exchangeable insertion elements (15,42).