초록 ▼

A reprogrammable electronic step timing control system having a fuel pressure threshold that is discretely variable as a function of engine speed. The fuel pressure threshold is increased for engine speeds above rated speed by a predetermined amount. A programming key is provided in a wiring harness

A reprogrammable electronic step timing control system having a fuel pressure threshold that is discretely variable as a function of engine speed. The fuel pressure threshold is increased for engine speeds above rated speed by a predetermined amount. A programming key is provided in a wiring harness to allow fuel pressure and speed thresholds to be readily changed.

대표청구항 ▼

[ We claim:] [1.]1. An electronic step timing control system for control of injection timing in a fuel system of the type including a hydromechanical fuel pump and governor and at least one fuel injector having a hydraulic tappet, said electronic step timing control system comprising:an ON-OFF solen

[ We claim:] [1.]1. An electronic step timing control system for control of injection timing in a fuel system of the type including a hydromechanical fuel pump and governor and at least one fuel injector having a hydraulic tappet, said electronic step timing control system comprising:an ON-OFF solenoid valve for supplying timing fluid to said hydraulic tappet and thereby advancing injection timing; andelectronic circuit means for controlling said solenoid valve as a function of fuel pressure and engine speed, said electronic circuit means including a fuel pressure level detector having a threshold that is electronically variable as a function of engine speed.