Method for forming injection pressure curve at injection systems e.g. of motor vehicles and injection system with pump and injection nozzles, has control valves mounted in pump which communicate with each other across HP line

摘要

The method involves control of the valves (8,10) being carried out by an actuator (9). Injection parameters are determined during a pre-injection phase, a pressure build-up phase (29) and a main injection phase. Also by the control of the first control valve (8) by means of the actuator, the duration (31) of the pre-injection phase is variable.