An electronic thermostat, into which cooling water is flowed from a cylinder head of an engine through a first inlet, controls the flow rate of the received cooling water supplied to outside ambient air exposure. The electronic thermostat includes a first valve for controlling the flow rate of the cooling water supplied to a first passage for connecting a first outlet of the electronic thermostat and a water pump and includes a second valve for controlling the flow rate of the cooling water flowing through a second passage for connecting the outlet of a radiator and a cylinder block of the engine.

A piston cooling apparatus of an engine and a method for controlling the same are provided. The piston cooling apparatus includes a piston cooling jet that has a first nozzle configured to spray oil towards an inner wall of a cylinder configured such that a piston reciprocates thereon, and a second nozzle configured to spray the oil towards the lower part of the piston. A jet control valve is installed to adjust a hydraulic pressure that is supplied from an oil pump to the piston cooling jet. A controller is configured to operate the jet control valve and adjust the hydraulic pressure discharged from the oil pump.

A thermal management system and method for a vehicle includes a cooling system having a variable cooling capacity and which is connectable to a heat-producing system of the vehicle. A control system is configured to increase the cooling capacity of the cooling system to a first predetermined level in response to the at least one input indicating an increase in the future heat load of the heat-producing system when a temperature of the cooling system is at least a predetermined temperature and the cooling system is operating below the first predetermined level. The control system is also configured to inhibit increasing the cooling capacity of the cooling system to the first predetermined level in response to the at least one input indicating an increase in the future heat load of the heat-producing system when the temperature of the cooling system is less than the predetermined temperature.

Methods and systems for managing a monitoring of an engine cooling system. A transient condition associated with an engine system is identified. A determination is made as to whether the transient condition is a delay condition based on whether the transient condition exceeds a transient threshold. A determination is made, in response to a determination that the transient condition is not the delay condition, as to whether a period of time that has passed since a previously identified delay condition meets a time threshold. Monitoring of a health of the engine cooling system is enabled in response to a determination that the period of time meets the time threshold.

A system for controlling a fan in a vehicle having a heat exchanger may include defining first and second geographic areas and determining a geographic location of the vehicle. A processor may be programmed to send a signal to operate the fan in a first rotational direction to move air through the heat exchanger in a first direction, and to send a signal to the fan to operate it in a second rotational direction opposite the first rotational direction to move air through the heat exchanger in a second direction opposite the first direction when a plurality of conditions are met.

The disclosed computer-implemented method optimizes thermal control of a vehicle motor, the vehicle including a cooling device including an actuator varying cooling capacity, the method including training a reinforcement learning algorithm including the iterative steps: 1) determining an action to control an actuator by applying a control function to a current state of the thermal system, and implementing the action; 2) determining a modified state of the thermal system after implementing the action; 3) calculating, by implementing a thermodynamic reward function of the motor, a reward value based on the modified state of the thermal system, and the action; 4) updating a function for estimating thermal performance based on the current state of the thermal system, the modified state of the thermal system, the action and the reward; and 5) modifying the control function based on the update of the function for estimating thermal performance.

Methods and systems are provided for a cooling arrangement. In one example, the cooling arrangement comprises flowing coolant to only an upper portion of a cylinder head during a cold-start. The cooling arrangement comprises flowing coolant to a cylinder block, a lower portion of the cylinder-head, and the upper portion of the cylinder head outside of the cold-start.

A generator set is disclosed. The generator set may include a liquid-cooled engine and an alternating current (AC) generator coupled to the liquid-cooled engine. The generator set may include an AC fan associated with the liquid-cooled engine and connected to the AC generator via a relay and an engine control module (ECM) associated with the liquid-cooled engine and connected to the AC fan via the relay. The generator set may include an engine temperature sensor associated with the liquid-cooled engine and connected to the ECM via a first circuit and an engine air temperature sensor associated with the liquid-cooled engine and connected to the ECM via a second circuit.

A control system for controlling a work machine includes an engine for producing power to propel the work machine during a normal operating mode, a cooling system for cooling at least the engine during the normal operating mode, and a controller for controlling the cleaning system during the normal operating mode and a clean operating mode. During the normal operating mode, the engine is running and the controller operably controls a cooling fan of the cooling system to rotate in a first rotational direction to produce a first air flow in a first direction. During the clean operating mode, the engine is not running and the controller operably controls the cooling fan to rotate in a second rotational direction to produce a second air flow in a second direction. The first rotational direction is opposite the second rotational direction, and the first direction is opposite the second direction.

A method of diagnosing a mechanical coolant pump in an automobile equipped with cooling system having a mechanical coolant pump and an electric coolant pump comprises detecting when an engine of the automobile has been started, dis-engaging the electric coolant pump, engaging the mechanical coolant pump, and verifying the mechanical coolant pump is operating properly.