A vehicle includes an engine, a climate control system, a cabin, and a controller. The controller is programmed to, in response to the climate control system supplying heat to a vehicle cabin and receiving a request for an economy mode, decrease an engine coolant temperature engine start threshold. The controller is further programmed to, in response to the engine coolant temperature becoming less than the threshold, start the engine.

A thermal management system for a vehicle may be selectively controlled to supply heat from any one of a plurality of different heat sources, to any one of a plurality of different heat sinks. The heat sources may include: an internal combustion engine, a cylinder head, an exhaust gas heat recovery system, an exhaust gas recirculation system, or a turbocharging system. The heat sinks may include: the internal combustion engine, the cylinder heat, an engine oil cooler, a transmission oil cooler, and a heating core. Each of an engine oil cooler control valve, a transmission oil cooler control valve, a heating core control valve, an engine block control valve, a cylinder head control valve, a bypass control valve, and a heat transfer control valve are controlled to effectuate a desired operating mode for the thermal management system.

A thermal management system for a vehicle may be selectively controlled to supply heat from any one of a plurality of different heat sources, to any one of a plurality of different heat sinks. The heat sources may include: an internal combustion engine, a cylinder head, an exhaust gas heat recovery system, an exhaust gas recirculation system, or a turbocharging system. The heat sinks may include: the internal combustion engine, the cylinder heat, an engine oil cooler, a transmission oil cooler, and a heating core. Each of an engine oil cooler control valve, a transmission oil cooler control valve, a heating core control valve, an engine block control valve, a cylinder head control valve, a bypass control valve, and a heat transfer control valve are controlled to effectuate a desired operating mode for the thermal management system.

A number of variations may include a thermal management system having an engine and a coolant system comprising a coolant circuit and a coolant pump, wherein the coolant pump is operated by an electronic control unit that operates independently of the engine, and wherein the electronic control unit is constructed and arranged to operate the coolant pump at a higher speed than the engine speed multiplied by pulley ratio during engine warm up.

A number of variations may include a thermal management system having an engine and a coolant system comprising a coolant circuit and a coolant pump, wherein the coolant pump is operated by an electronic control unit that operates independently of the engine, and wherein the electronic control unit is constructed and arranged to operate the coolant pump at a higher speed than the engine speed multiplied by pulley ratio during engine warm up.

The present invention relates to an air conditioner for a vehicle and a control method thereof, which can calculate the range of discharge temperature to the interior of the vehicle, set the upper limit of the discharge temperature, and control the degree of opening of a temp door such that the discharge temperature to the interior of the vehicle gets lower than the upper limit, thereby preventing air of discharge temperature above the upper limit from being discharged to the interior of the vehicle and preventing displeasure or personal injury that may be caused when air of high temperature is discharged.

The present invention relates to an air conditioner for a vehicle and a control method thereof, which can calculate the range of discharge temperature to the interior of the vehicle, set the upper limit of the discharge temperature, and control the degree of opening of a temp door such that the discharge temperature to the interior of the vehicle gets lower than the upper limit, thereby preventing air of discharge temperature above the upper limit from being discharged to the interior of the vehicle and preventing displeasure or personal injury that may be caused when air of high temperature is discharged.

A vehicle water jacket assembly includes a first water jacket portion establishing a plurality of first fluid channels that are situated to facilitate fluid movement along at least a first plane. A second water jacket portion is situated near the first water jacket portion. The second water jacket portion establishes a plurality of second fluid channels that are situated to facilitate fluid movement along at least a second plane that is generally parallel to the first plane. At least one connector portion establishes a plurality of connector fluid channels that are situated to facilitate fluid movement between at least one of the first fluid channels and at least one of the second fluid channels along a direction that is transverse to the first and second planes.

A vehicle water jacket assembly includes a first water jacket portion establishing a plurality of first fluid channels that are situated to facilitate fluid movement along at least a first plane. A second water jacket portion is situated near the first water jacket portion. The second water jacket portion establishes a plurality of second fluid channels that are situated to facilitate fluid movement along at least a second plane that is generally parallel to the first plane. At least one connector portion establishes a plurality of connector fluid channels that are situated to facilitate fluid movement between at least one of the first fluid channels and at least one of the second fluid channels along a direction that is transverse to the first and second planes.

The present invention relates to an energy recovery system (51), which withdraws heat from a feed medium (52) containing heat energy, and—which has a heat transfer system (53) for this purpose, in order to transfer heat energy from the feed medium to a useful medium (54). According to the invention—the heat transfer system (53) has a separation system (57) which spaces apart the two media (52, 54); the heat transfer system (53) has at least one first exchanger zone (35), which allows the transfer of heat from the feed medium (52) to the useful medium (54) as long as the temperature of the feed medium is higher than that of the useful medium (54, 54′); and—the heat transfer system (53) has at least one second exchanger zone (56), which allows the transfer of heat from the feed medium (54, 54′), even when the temperature of the feed medium is lower than that of the useful medium.