An expansion tank for a vehicle with dual cooling lines includes a first chamber with a first fluid pressure, wherein the expansion tank includes a first fluid connector in fluid connection with the first chamber for connection to a first cooling line, a second chamber with a second fluid pressure, wherein the expansion tank includes a second fluid connector in fluid connection with the second chamber for connection to a second cooling line, wherein the first chamber and the second chamber are in fluid connection via a pressure actuated two-way valve that acts as a one-way valve open in the direction towards the second chamber at differential pressures between the second fluid pressure and the first fluid pressure below a first predetermined differential pressure threshold and opens also in the direction towards the first chamber at differential pressures above the first predetermined differential pressure threshold.

The present invention relates to a valve system, comprising a first valve and a second valve, wherein both valves each have a housing with a plurality of housing openings, and a valve body arranged rotatably in the housing with at least one connection channel for providing a fluid connection of at least two of the housing openings,

characterized in that
the valve body of the first valve and the valve body of the second valve are mechanically coupled with each other by means of a coupling device of the valve system, wherein the coupling device is designed in such a way that the valve bodies can be rotated jointly by means of the coupling device when the valve system is in a first operating state and rotated independently of each other by means of the coupling device when the valve system is in a second operating state.

An engine (12) drives a variable capacity-type hydraulic pump (16), discharged hydraulic oil is selectively supplied to a cooling fan (19) and a hoist cylinder (11) in accordance with switching of a selection valve (17), thereby controlling the same on the basis of each target value. A pump discharge pressure (Pp) of the hydraulic oil discharged from the hydraulic pump (16) and a motor supply pressure (Pm) of the hydraulic oil supplied to a hydraulic motor (18) via the selection valve (17) are detected by sensors (27, 28) and are compared with pressure determination values stored in advance as a pump discharge pressure (Pp) and an actuator supply pressure (Pm) generated when the target value is achieved. Presence/absence of abnormality in the hydraulic actuator control device (15) is determined on the basis of a result of the comparison, and when abnormality is determined to have occurred, control is performed to minimize the capacity of the hydraulic pump (16).

Disclosed is a cooling system comprising: a first cooling circuit with a first coolant pump; a second cooling circuit with a second coolant pump; an expansion tank provided with an expansion chamber for accumulation of coolant, wherein the expansion chamber is connected to the second cooling circuit to allow the expansion chamber to receive coolant from the second cooling circuit; and a deaeration device arranged in the first cooling circuit for separation of air bubbles from the coolant circulating therein. The deaeration device is located at a lower position than the expansion tank and connected to said expansion chamber via a static line to allow air bubbles separated from the coolant in the deaeration device to migrate upwards in the static line towards the expansion chamber.

A vehicle includes an internal combustion engine (ICE) selectable between a running state and a non-running state. A thermoelectric generator (TEG) is in thermal contact with the ICE for converting thermal energy from the ICE to output electrical energy. The vehicle has an electric pump for circulating a liquid coolant through a coolant circuit. The electric pump is selectively powerable by the electrical energy output from the TEG. The coolant circuit is in fluid communication with the ICE, a radiator, and the TEG; and the TEG is downstream of the radiator in the coolant circuit.

A hybrid power control apparatus for a vehicle includes an inverter module disposed in a housing; a low DC-DC converter (LDC) module disposed in the housing; and a component mounting part attachably/detachably assembled in the housing. In the hybrid power control apparatus, the inverter module includes a plurality of power modules; a cooler contacts both surfaces of each power module so as to carry out heat conduction, the cooler assembled to the component mounting part; and a capacitor module assembled in a form where the capacitor module is stacked on one side of the cooler so as to carry out heat conduction. As a result of this structure, cooling efficiency can be improved, and the inverter module, the converter module, and a controller are packed in one closed space, thereby reducing the size of the hybrid power control apparatus.

In a cooling path of a motor, an oil control valve is provided between a motor cooling oil path and a first motor cooling path, a first heat exchanger is provided in the first motor cooling path, and a second heat exchanger is provided in a second motor cooling path. In a motor-drive mode, a valve control unit switches the oil control valve to the first motor cooling path side when an engine temperature is lower than a first threshold, and switches the oil control valve to the second motor cooling path side when the engine temperature is equal to or higher than the first threshold. In the first heat exchanger, motor cooling oil and engine oil exchange heat. In the second heat exchanger, the motor cooling oil and a coolant for the engine exchange heat.

A fluid flow control device controls flow of coolant in a motor vehicle motor cooling system. The flow control device includes first and second coolant inlets and first and second coolant outlets. The flow control device is operable selectively to direct coolant flowing into the device to flow out from the flow device through one or both of the first and second outlets in dependence on a temperature of fluid flowing through the device.

The invention provides a single radiator cooling system for use in hybrid electric vehicles, the system comprising a surface in thermal communication with electronics, and subcooled boiling fluid contacting the surface. The invention also provides a single radiator method for simultaneously cooling electronics and an internal combustion engine in a hybrid electric vehicle, the method comprising separating a coolant fluid into a first portion and a second portion; directing the first portion to the electronics and the second portion to the internal combustion engine for a time sufficient to maintain the temperature of the electronics at or below 175° C.; combining the first and second portion to reestablish the coolant fluid; and treating the reestablished coolant fluid to the single radiator for a time sufficient to decrease the temperature of the reestablished coolant fluid to the temperature it had before separation.

A vehicle heating/cooling system for a vehicle comprises an internal combustion engine coupled to a closed engine coolant circuit to recirculate engine coolant therethrough; a refrigerant compressor coupled to a closed refrigerant circuit to recirculate refrigerant therethrough, wherein the refrigerant compressor is coupled to the internal combustion engine to be driven thereby; a closed thermally regulated fluid circuit to recirculate thermally regulated fluid therethrough; and a consolidated heating/cooling core coupled to the closed engine coolant circuit, to the closed refrigerant circuit and to the closed thermally regulated fluid circuit.