Electromechanical failsafe thermostat

Details Electromechanical failsafe thermostat Electromechanical failsafe thermostat

2011-08-02

2011-08-02

Cuff, Michael (Department: 3783)

Internal-combustion engines

Cooling

With liquid coolant circulating means

C123S041100, C236S034500, C251S249500, C251S250000

Reexamination Certificate

active

07987822

ABSTRACT:
An apparatus for controlling a temperature for an engine by controlling a flow of a liquid engine coolant through a coolant conduit, the apparatus including a thermostat having a temperature responsive valve for substantially blocking and substantially unblocking the flow of the liquid coolant to a radiator. The valve opens as the temperature of the liquid coolant rises and a spring urges the valve to a closed position as the temperature of the fluid falls. An electromechanical actuator is provided outside of the conduit and is controlled by an engine control system in response to engine conditions. It is connected to the valve by a connector assembly extending between the electromechanical actuator and the valve through the coolant conduit, the connector assembly being positioned relative to the valve to cause the spring to be compressed as the electromechanical actuator opens the valve so that the valve is opened and closed in response to a coolant temperature by said thermostat and positioned within a range of travel by said electromechanical actuator.

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