When a coolant controlled to have a constant target temperature is used regardless of a traveling condition of a vehicle, a fuel efficiency of the vehicle may be reduced. Therefore, a VCU 1 predicts the output of an internal combustion engine in a future prediction period on the basis of position information of the vehicle acquired from a positioning unit, traffic information related to a route to a destination, and internal combustion engine control information, determines a target coolant temperature which is the target temperature of the coolant for cooling the internal combustion engine on the basis of the predicted output of the internal combustion engine, sets the change timing for changing the temperature of the coolant to the target coolant temperature on the basis of the predicted output of the internal combustion engine, and controls the operation of the coolant temperature change unit for changing the temperature of the coolant at the change timing so as to reach the target coolant temperature on the basis of the predicted output of the internal combustion engine.

A hybrid coolant pump assembly comprises a housing, a bearing shaft, and an impeller apparatus. The bearing shaft is rotatably supported within an internal cavity of the housing. A first clutch is disposed on the bearing shaft and is operable to drivingly interconnect an input member and the bearing shaft when in an engaged state. The impeller apparatus is positioned about the bearing shaft and configured to pump a fluid. A rotor, disposed within the internal cavity of the housing, extends about the bearing shaft. A stator, disposed within the internal cavity of the housing, extends about the rotor. The rotor rotates relative to the stator and the bearing shaft when the stator is electrically energized. The impeller apparatus is rotatably driven by the bearing shaft when the first clutch is in the engaged state. The impeller apparatus is rotatably driven by the rotor when the stator is electrically energized.

A cooling device for vehicle includes: an electric motor; an engine cooling pump; a power-control unit cooling pump; and a differential mechanism. The engine cooling pump is configured to allow an engine cooling water to flow by rotary power of the electric motor. The power-control unit cooling pump is configured to allow a cooling liquid for power control unit to flow by the rotary power of the electric motor. The differential mechanism makes a flowrate of the engine cooling pump different from a flowrate of the power-control unit cooling pump by controlling transmission of the rotary power from the electric motor.

An engine control system for an engine includes: a pump control module configured to control a coolant pump; a block control module configured to control opening of a block valve; a fuel control module configured to control fueling of the engine; a coolant control module configured to control a position of a coolant valve; and an adjustment module configured to, when the coolant pump is pumping, the block valve is open, and the coolant valve is positioned such that an input is connected to an output, adjust the fueling of the engine such that fueling of the engine is fuel rich.

A dual-powered railroad vehicle is provided. The vehicle includes a combustion engine having a first cooling circuit; a traction transformer having a second cooling circuit; and at least one radiator for dissipating thermal energy to surrounding air. The first cooling circuit and the second cooling circuit are configured to dissipate thermal energy via the at least one radiator. Further, a method for operating a dual-powered railroad vehicle is provided.

A cooling system for a powertrain includes: a rotating electrical machine unit including a rotating electrical machine; and a power control unit configured to drive the rotating electrical machine. The cooling system includes: a radiator configured to cool a refrigerant; a refrigerant circulation circuit configured to supply the refrigerant flowing out from the radiator to a second cooled portion via a first cooled portion; a bypass flow path bypassing the second cooled portion; a flow control valve configured to adjust the ratio of a second refrigerant flow rate to a first refrigerant flow rate; and a control device configured to control the flow control valve. The control mode of the flow control valve includes a flow rate limiting mode in which the flow control valve is controlled to adjust the ratio such that the second refrigerant flow rate becomes less than the first refrigerant flow rate.

An electric coolant pump may include a valve device controlled at a discharge side by pressure. The valve device may include a coolant inlet, a first coolant outlet, and a second coolant outlet. The valve device may be configured to at least one of open and close at least one of the first coolant outlet and the second coolant outlet based on a selected operating point and a pressure in a coolant.

A pump for recirculating the cooling liquid of combustion engines, in particular of vehicles, with a hybrid control system that includes an electromagnetic friction coupling and electric motor. The pump is capable of recirculating cooling liquids to produce a variation in the speed of the rotation of the impeller depending on the requirements of the engine.

A pump assembly for a motor vehicle, comprising at least one mechanical drive, at least one electric drive, and at least one planetary gearbox, wherein the mechanical drive and the electric drive are coupled to one another via the planetary gearbox, the electric drive comprising a rotor shaft that is designed as a hollow shaft, wherein the rotor shaft is mounted at one side on a housing of the pump assembly via a ball bearing and at the other side in a gear stage of the planetary gearbox.

An electric coolant pump is used as an auxiliary water pump in a vehicle. The pump includes radial mounting of the shaft (4) is provided by means of a coolant-lubricated radial sliding bearing (41) arranged between the pump impeller (2) and the rotor (32). A dry-running electric motor (3) with a radially inner stator (31) and a radially outer rotor (32) is accommodated in a motor chamber (13) separated from the pump chamber (10). A shaft seal (5) is between the radial sliding bearing (41) and the motor chamber (13). The rotor (32) is bell-shaped with an inner surface facing the shaft seal (5) and being fixed to the shaft seal (5) to axially overlap with the shaft (4). The motor chamber (13) has an opening to the atmosphere, which is closed by a liquid-tight pressure equalization membrane (6) that is permeable to vapor.