Internal-combustion engines – Cooling – Indicators and safety devices
Patent
1984-09-04
1985-07-02
Lazarus, Ira S.
Internal-combustion engines
Cooling
Indicators and safety devices
123196S, 123198D, F02B 7708
Patent
active
045261407
ABSTRACT:
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 occurrence 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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Lewis Ordale
Monigold Larry E.
Kysor Industrial Corporation
Lazarus Ira S.
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