The invention relates to a coolant pump having an impeller which is arranged on a pump impeller shaft and having a drive device for the impeller, which drive device has a mechanical drive and an electric-motor drive. The impeller shaft is divided into a driving section and a driven section, and an openable and closable clutch is arranged between the driving section and the driven section. Operation of the coolant pump by either the mechanical drive or the electric-motor drive can be dependent upon a predetermined speed of threshold of rotation of the impeller, and/or upon a predetermined power usage threshold.

An air conditioning system for hybrid vehicles includes a control unit configured to re-operate an engine if an engine cooling water temperature is reduced to a lower limit value or less after entry into a motor drive mode, and configured to stop the engine if the engine cooling water temperature is increased to an upper limit value or more. The control unit is configured to change the upper limit value and the lower limit value depending on a target air injection temperature calculated according to an internal/external temperature condition and a user-set temperature so that, in the motor drive mode, a re-operation time point of the engine is actively changed according to the target air injection temperature.

A cooling system for an air-cooled engine includes a plurality of electric fans, a plurality of ducts, each duct configured to receive one of the plurality of electric fans, a housing, the housing configured to be coupled to the engine and to include at least one opening, each opening is configured to be coupled to receive one of the plurality of ducts to direct air from the electric fans to a plurality of target locations, a sensor, the sensor is configured to acquire sensor data regarding the operation of the engine, and a processing circuit, the processing circuit is configured to receive the sensor data from the sensor and to control operation of the plurality of electric fans in accordance with the sensor data.

A heat management system is provided for an automotive system having a plurality of heat manageable components. The heat management system includes a plurality of heat transferring path having a plurality of heat pipes, and a heat exchanger for each of the heat manageable component of the automotive system. The heat pipes are configured to transfer heat from at least one of the heat exchanger to another heat exchanger.

A device for controlling a motor includes an inverter which drives the motor, a first shunt resistor which is connected to a source of a first low-side transistor included in the inverter, a second shunt resistor which is connected to a source of a second low-side transistor included in the inverter, and a controller which controls the inverter based on a first current flowing through the first shunt resistor and a second current flowing through the second shunt resistor.

The present invention relates to a cooling device and a control method therefor. This cooling device includes: a first cooling liquid line routed by way of a cylinder head and a radiator; a second cooling liquid line routed by way of a cylinder block while bypassing the radiator; a third cooling liquid line routed by way of the cylinder head and a heater core while bypassing the radiator; a flow rate control valve for distributing cooling water to the cooling liquid lines; and mechanical and electric water pumps. A control unit controls the flow rate control valve according to the temperatures of the cylinder head and block, during engine operation, and causes the electric water pump to operate while controlling the flow rate control valve according to the temperature of the cylinder head, and whether or not heat exchange in the heater core is requested, during temporary engine stop.

A system and method of thermal management for an engine are provided. The system includes an engine, an electrical water pump, and a controller. The controller has a processor and tangible, non-transitory memory on which is recorded instructions. Executing the recorded instructions causes the processor to continuously monitor the temperature of the cylinder head and the temperature of the coolant. If the monitored temperatures of the cylinder head and the coolant are below predetermined thresholds, the processor executes a first control action, in which the pump remains off and the coolant remains stagnant. If either of the monitored temperatures of the cylinder head or coolant reaches the respective predetermined threshold, the controller initiates a second control action, which requires the controller to signal the pump to turn on and circulate coolant. The controller then determines the desired operating speed of the electrical water pump based on engine load.

A cooling device for an engine includes a radiator route passing through a radiator, that are merged together after being branched on the downstream side from the inside of the engine in a coolant circuit configured to allow a coolant to flow from a pump through the inside of the engine and return to the pump. An at-stop control section provided in the cooling device controls a multiway valve that has three discharge ports, including a radiator port connected to the radiator route, so as to close the radiator port and open at least one of the other discharge ports when an ignition switch is turned off.

A device and method for cooling an air cooled motorcycle engine. A fan and a cover acting as a duct directs engine heat forward away from a rider when the motorcycle engine is hot and the motorcycle is stopped. When the motorcycle is in motion the fan is switched off and the passing air takes a reversed path and flows rearward over the engine fins cooling the engine.

An emergency braking force generation system includes: an engine for performing combustion using air and fuel injected from an injector and generating torque; a cooling fan which is rotated by the torque of the engine and supplies air into one side of the engine; a cooling fan clutch that selectively transmits the torque of the engine into the cooling fan; a transmission that varies a gear ratio by receiving the torque of the engine and rotates a driving wheel; and a control portion that controls the cooling fan clutch such that the cooling fan is integrally rotated with the engine when an emergency braking signal is generated so as to increase a load of rotation of the engine through the cooling fan.