A piston with a cooling gallery containing an open cell radiator is provided. The radiator has a large thermally conductive surface area that acts as a heat-sink to remove heat from the piston. Heat from the piston is transmitted from the radiator to cooling oil that enters the cooling gallery via an oil inlet formed in a floor of the cooling gallery and exits the cooling gallery via an oil outlet. The piston comprises a piston body including an upper part presenting an upper combustion surface and an undercrown surface. A ring belt depends from the upper combustion surface, and the cooling gallery extends around the piston body beneath the undercrown surface radially inwardly of the ring belt. The radiator includes a plurality of fins extending annularly around the cooling gallery. The fins of the radiator are spaced from one another by gaps extending annularly around the cooling gallery.

A piston with a cooling gallery containing an open cell radiator is provided. The radiator has a large thermally conductive surface area that acts as a heat-sink to remove heat from the piston. Heat from the piston is transmitted from the radiator to cooling oil that enters the cooling gallery via an oil inlet formed in a floor of the cooling gallery and exits the cooling gallery via an oil outlet. The piston comprises a piston body including an upper part presenting an upper combustion surface and an undercrown surface. A ring belt depends from the upper combustion surface, and the cooling gallery extends around the piston body beneath the undercrown surface radially inwardly of the ring belt. The radiator includes a plurality of fins extending annularly around the cooling gallery. The fins of the radiator are spaced from one another by gaps extending annularly around the cooling gallery.

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 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 rankine cycle system includes: an internal combustion engine; a gas-liquid separator; a first pump; a steam generator; a superheater; an expander; a condenser; a first control valve; and a controller.

A rankine cycle system includes: an internal combustion engine; a gas-liquid separator; a first pump; a steam generator; a superheater; an expander; a condenser; a first control valve; and a controller.

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 expansion tank, while maintaining gas-liquid separation performance of coolant circulating through an engine cooling apparatus, can absorb pressure variations occurring with volume change of the coolant even when an excessive amount of coolant is supplied. A bulkhead 42 partitions an expansion tank 30 into separate chambers R1 to R6 that communicate with each other via a first communication hole 44 positioned lower than a FULL line. The separate chambers R4 to R6 that constitute a separate chamber group X communicate with each other via a third communication hole 45a positioned higher than the FULL line. The separate chambers R1 to R3 that constitute a separate chamber group Y communicate with each other via a fourth communication hole 45b positioned higher than the FULL line. The separate chamber R1 and the separate chamber R4 communicate with each other via a second communication hole 45c disposed at the height of the FULL line.

Methods and systems are provided for controlling coolant flow through parallel branches of a coolant circuit including an AC condenser and a charge air cooler. Flow is apportioned responsive to an AC head pressure and a CAC temperature to reduce parasitic losses and improve fuel economy. The flow is apportioned via adjustments to a coolant pump output and a proportioning valve.