A cooling shroud assembly for an engine is disclosed. This cooling shroud assembly includes a shroud body. There is an inlet door or flap to an interior of this shroud body, along with an outlet door or flap from this shroud body. When installed on an engine that is incorporated by a moving vehicle (e.g., aircraft, unmanned aerial vehicle, radio-controlled aircraft, watercraft), airflow through the shroud body from an inlet to an outlet. The position of the inlet and outlet doors may be adjusted (e.g., simultaneously) to change the airflow through the shroud body, and to thereby change the dissipation of heat from the operating engine via this airflow.

Methods and systems are provided for a coolant circuit. In one example, the coolant circuit comprises high and low-temperature radiators, where only one pump is configured to conduct coolant through the entire coolant circuit.

A method is provided for operating an internal combustion engine (ICE), typically together with a vehicle. A corresponding ICE and a related computer program product are also provided.

The cooling apparatus of the internal combustion engine according to the invention executes an incompletely-warmed state control for supplying the cooling water to the cylinder block water passage from the cylinder head water passage without flowing the cooling water through the radiator and supplying the cooling water to the cylinder head water passage from the cylinder block water passage when the temperature of the cooling water is lower than the engine completely-warmed water temperature at which the engine is estimated to be warmed completely.

A control method for a cooling system includes determining, by the controller, whether the output signal of the ambient temperature sensor satisfies a predetermined an ambient low temperature driving condition, determining, by the controller, whether the output signal of the first coolant temperature sensor satisfies a predetermined first low temperature driving condition when the output signal of the ambient temperature sensor satisfies the predetermined the ambient low temperature driving condition and controlling, by the controller, the operation of the coolant control valve unit to open the first coolant passage and the third coolant passage and to close the second coolant passage when the output signal of the first coolant temperature sensor satisfies the predetermined first low temperature driving condition.

A control method for a cooling system is provided. The system includes a vehicle operation state detecting portion having an ambient temperature sensor, first and second coolant temperature sensors, a coolant control valve unit that adjusts opening rates of first, second, and third coolant passages and a controller. The method includes determining whether an output signal of the ambient temperature sensor satisfies a predetermined an ambient low temperature driving condition and whether an output signal of the first coolant temperature sensor satisfies a predetermined first low temperature driving condition when the output signal of the ambient temperature sensor satisfies the predetermined the ambient low temperature driving condition. The coolant control valve unit opens the first and coolant passages and closes the second coolant passage when the output signal of the first coolant temperature sensor satisfies the predetermined first low temperature driving condition.

An engine cooling system is provided. The system includes a cylinder block formed that has a block coolant chamber formed therein and a front insert that is inserted downward of an upper portion of a front side and receives coolant in the block coolant chamber to adjust a flow of the coolant. Additionally, a rear insert is inserted downward of an upper portion of a rear side and exhausts the coolant in the block coolant chamber to adjust the flow of the coolant.

A coolant control system of a vehicle includes an opening module configured to determine a coolant valve (CV) opening, a flow control valve (FCV) opening, and a block valve (BV) opening based on at least one of a block temperature difference, a head temperature difference, and a coolant outlet temperature difference. A CV control module is configured to selectively actuate a CV based on the CV opening. The CV regulates coolant flow from the FCV to a radiator and a coolant channel bypassing the radiator. A BV control module is configured to selectively actuate a BV based on the BV opening. The BV regulates coolant flow from the engine block to the FCV. A FCV control module is configured to selectively actuate a FCV based on the FCV opening. The FCV regulates coolant flow from the cylinder head and the BV to the CV.

Methods and systems are provided for expediting engine cooling while reducing the overall energy consumption of the engine cooling system's components. A first circulation pump is used to pump coolant through an engine block as a function of engine output while a second radiator pump is selectively operated when a thermostat valve is open to pump coolant through a radiator and the engine block to effect the engine coolant temperature. Operation of the second pump is coordinated with the operation of a radiator cooling fan and grille shutters to improve radiator performance.

A coolant pump for a vehicle includes an impeller mounted at one side of a shaft and configured to pump a coolant, a pulley mounted at the other side of the shaft and configured to receive torque, a pump housing including an inlet into which the coolant inflows and an outlet of which the coolant flows out, a slider disposed to be movable in a longitudinal direction of the shaft so as to selectively block or open the outlet and a driver configured to move the slider, where a passage which supplies the coolant to at least one heat exchange element is formed on the pump housing.