START, SHUTOFF AND OVERSPEED SYSTEM

摘要

A start, shutoff and overspeed system includes a shutoff valve (136) which permits the flow of fuel to an engine when the pressure of the main flow of fuel received from the fuel pump (104, 106) at first end of the shutoff valve exceeds a bias pressure at a second end of the shutoff valve. The bias pressure at the second end of the shutoff valve is controlled by an overspeed governor valve (158, 176) operating in conjunction with a start solenoid valve (162) and shutoff solenoid valve (160).