| 摘要 |
In a vehicle with a liquid cooled engine and a heat exchanger such as an interior heater for the passenger compartment, an isolation device positioned therebetween for normally permitting flow of liquid from the engine cooling system to the heat exchanger and then back to the engine cooling system but for blocking flow to the heat exchanger when the liquid temperature is excessive. The device including a thermally responsive power means responsive to a high liquid temperature to block liquid flow to the heat exchanger and redirect the flow in bypass relation to the heat exchanger.
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