Mechanical engine protection system

Details Mechanical engine protection system Mechanical engine protection system

F - Mech Eng,Light,Heat,Weapons

02

B

123/234

F02B 77/08 (2006.01)

Patent

CA 1229272

MECHANICAL ENGINE PROTECTION SYSTEM ABSTRACT OF THE DISCLOSURE A mechanical engine protection system includes a temperature responsive valve, a pressure sensing valve and a mechanical shutdown actuator. The valves and actuator are fluidly interconnected so that the actuator is shifted from a run position to a shutdown position upon the occur- rence of a high engine operating temperature condition or a low oil pressure condition. The temperature responsive valve includes an inlet port, an outlet port and a drain port. A valve element is positioned by a thermally responsive unit or motor to selectively interconnect the outlet port with either the inlet port or the drain port. The pressure sensing valve includes an inlet port, an outlet port, a drain port and a pilot port. A diaphragm motor positions a valve element in response to the pressure signal applied to the control port to selectively interconnect the outlet port with the inlet port or the drain port. The shutdown actuator includes an inlet port, an actuator rod and a spring loaded diaphragm motor.

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