A cooling system for a hybrid vehicle that cools cooling medium for an air conditioner without reducing a driving performance, irrespective of a running condition. A detector detects data relating to operating conditions of a high-current device cooling circuit, a supercharger cooling circuit, a high-current device, an engine, a supercharger, and the hybrid vehicle. A controller selects one of a first water passage and a second water passage by manipulating a control valve based on the data collected by the detector, in such a manner as to maximize an amount of heat transferred from the cooling medium to high-current device cooling water or supercharger cooling water.

A heat exchanger unit for a fluid circuit of a motor vehicle includes a plurality of fluid connections for a through-flow of a working fluid, a fluid distributor fluidically connected to the fluid connections, and a fluid connector fluidically connected to the fluid connections. The fluid distributor is structured and arranged to distribute the working fluid among the fluid connections, and the fluid collector is structured and arranged to collect the working fluid after flowing through the fluid connection. At least a portion of the fluid distributor and/or the fluid collector includes a surge tank for the working fluid.

A heat exchanger unit for a fluid circuit of a motor vehicle includes a plurality of fluid connections for a through-flow of a working fluid, a fluid distributor fluidically connected to the fluid connections, and a fluid connector fluidically connected to the fluid connections. The fluid distributor is structured and arranged to distribute the working fluid among the fluid connections, and the fluid collector is structured and arranged to collect the working fluid after flowing through the fluid connection. At least a portion of the fluid distributor and/or the fluid collector includes a surge tank for the working fluid.

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.

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.

An absorption chiller system includes a generator section, a condenser section, an evaporator section and an absorber section all in fluid communication with each other and which operate to circulate a refrigerant therethrough. The evaporator section includes a transport membrane heat exchanger. The transport membrane heat exchanger includes a first and a second flow path. The first flow path is operable to flow the refrigerant therethrough under a vacuum pressure that is low enough to vaporize the refrigerant within the first flow path. The second flow path is operable to pass a fluid having water therethrough. Both water and heat are transferred from the fluid in the second flow path to the refrigerant in the first flow path through a membrane-based material of the transport membrane heat exchanger, such that the fluid passing through the second flow path has at least a portion of its water removed and is cooled.

An absorption chiller system includes a generator section, a condenser section, an evaporator section and an absorber section all in fluid communication with each other and which operate to circulate a refrigerant therethrough. The evaporator section includes a transport membrane heat exchanger. The transport membrane heat exchanger includes a first and a second flow path. The first flow path is operable to flow the refrigerant therethrough under a vacuum pressure that is low enough to vaporize the refrigerant within the first flow path. The second flow path is operable to pass a fluid having water therethrough. Both water and heat are transferred from the fluid in the second flow path to the refrigerant in the first flow path through a membrane-based material of the transport membrane heat exchanger, such that the fluid passing through the second flow path has at least a portion of its water removed and is cooled.

A cooling system for a prime mover is disclosed. The cooling system comprises at least one cooling jacket defined within a housing of the prime mover and receives refrigerant therein for cooling the prime mover. A compressor is in flow communication with an outlet port of the at least one cooling jacket and compresses refrigerant that flows from the outlet port of the at least one cooling jacket. A condenser is in flow communication with an outlet port of the compressor and discharges heat from refrigerant that is received from the compressor. An expansion device is in flow communication with an outlet port of the condenser at its inlet port and in flow communication with an inlet port of the at least one cooling jacket at its outlet port. The expansion device controls a flow of refrigerant from the condenser to the at least one cooling jacket is also disclosed.

A method for controlling a cooling system delivering coolant to a heat exchanger (18) in a vehicle (1). During operating conditions when a thermostat (6) in the cooling system is in the partly open position, the method comprises the steps of estimating a desired cooling temperature (T) of a medium in the heat exchanger (18), calculating the coolant flow rate ({dot over (m)}.sub.1) through a radiator (7b) and the coolant flow rate ({dot over (m)}.sub.2) through a radiator bypass line (9), calculating a coolant flow rate ({dot over (m)}.sub.3) and coolant temperature (t.sub.3) combination at 10 at which the medium in the heat exchanger (18) is cooled to a desired temperature (T), adjusting the flow regulating mechanism (23) such that coolant at the selected flow rate ({dot over (m)}.sub.3) and temperature (t.sub.3) combination is directed to the heat exchanger (18).

An internal combustion engine that can ensure an adequate cooling performance by using a small number of component parts, and can be minimized in size. The cooling device includes a boiling water cooling device including a water jacket, coolant piping, steam piping and a radiator, an air cooling fan connected to one end of a crankshaft projecting from an outer surface of the engine main body, and a cover member provided on the engine main body so as to cover the air cooling fan, and define a cooling air passage extending to a radiator core.