Abstract: A thermostat configured to control engine coolant temperature, a coolant temperature control method and system, includes a thermoelement, arranged to open a main valve upon reaching a predetermined temperature; a heating element arranged, based on an output signal from a controller, to heat said thermoelement, the coolant flowing through the thermostat being exclusively coolant from the radiator. Further, the controller may transmit an output signal to said heating element according to an engine signal received from an engine temperature sensor arranged near the engine block to close one or more coolant flow slots arranged at the thermostat exit until a certain predetermined temperature is sensed. The output signal may be transmitted upon the engine temperature sensor sensing a predetermined temperature.

Abstract: A thermostat configured to control engine coolant temperature, a coolant temperature control method and system, includes a thermoelement, arranged to open a main valve upon reaching a predetermined temperature; a heating element arranged, based on an output signal from a controller, to heat said thermoelement, the coolant flowing through the thermostat being exclusively coolant from the radiator. Further, the controller may transmit an output signal to said heating element according to an engine signal received from an engine temperature sensor arranged near the engine block to close one or more coolant flow slots arranged at the thermostat exit until a certain predetermined temperature is sensed. The output signal may be transmitted upon the engine temperature sensor sensing a predetermined temperature.

Abstract: A control to enable a further degree of enhancement in combustion efficiency in an automobile by effectively performing temperature control of cooling water in an automobile engine in accordance with various states of operation. Parameters from a variety of sensors that detect the state of an automobile engine are input into an engine control unit. Then, when the engine control unit determines from values of the accelerator opening and engine rotation speed, which serve as parameters indicating the operating state of the automobile, that the engine load is about to decrease, control is performed in the electronic control thermostat to maintain the cooling water temperature at a high temperature. Conversely, when it is determined that medium or high loads are due to increase, the control method is switched such that the electronic control thermostat is controlled by reading a target temperature corresponding to these parameter values from the engine control unit.

Abstract: A control to enable a further degree of enhancement in combustion efficiency in an automobile by effectively performing temperature control of cooling water in an automobile engine in accordance with various states of operation. Parameters from a variety of sensors that detect the state of an automobile engine are input into an engine control unit. Then, when the engine control unit determines from values of the accelerator opening and engine rotation speed, which serve as parameters indicating the operating state of the automobile, that the engine load is about to decrease, control is performed in the electronic control thermostat to maintain the cooling water temperature at a high temperature. Conversely, when it is determined that medium or high loads are due to increase, the control method is switched such that the electronic control thermostat is controlled by reading a target temperature corresponding to these parameter values from the engine control unit.