Abstract: A cooling device has a flat flow path formed between a first wide surface and a second wide surface, the second wide surface including protrusion portions protruding into the flow path, extending in a flow path width direction, and arranged side by side in a fluid flow direction. The first wide surface has no protrusion portions. The protrusion portions each include a first inclined surface inclined to come close to the first wide surface from upstream to downstream in the fluid flow direction, and a second inclined surface disposed alternately with the first inclined surface in the fluid flow direction and inclined to be distanced from the first wide surface from upstream to downstream in the fluid flow direction. The protrusion portions are formed such that a virtual first circle is inscribed at three points on the first wide surface, the second inclined surface, and the first inclined surface.

Abstract: A heat exchange tube includes a pair of opposed facing surfaces, and an obliquely protruding part formed on at least one of the pair of facing surfaces, wherein a plurality of the obliquely protruding parts are obliquely formed to be alternately opposite in a width direction of a flow path of the heat exchange fluid, and the plurality of the obliquely protruding parts are mutually connected to form connecting parts, and when hp represents a height of the flow path of the heat exchange fluid and Wv represents a width of the obliquely protruding part in a direction orthogonal to the flow direction of the heat exchange fluid in the flow path, Wv/hp being a ratio of the width of the obliquely protruding part to the height of the flow path is equal to or greater than 1.5 and is equal to or smaller than 6.0.

Abstract: A forward-tilting protruding piece leans forward toward an upstream side in a gas flow direction. A rearward-tilting protruding piece is disposed downstream of the forward-tilting protruding piece and leans rearward toward a downstream side in the gas flow direction. The forward-tilting protruding piece is in a shape of a four- or more-sided polygon including a base side in contact with a peripheral surface of the gas passage and a pair of left and right sides. The base side is oriented obliquely with respect to a direction perpendicular to the gas flow direction. The angle of one of the sides which is located on the upstream side in the gas flow direction with respect to the base side is larger than the angle of the other of the sides which is located on the downstream side in the gas flow direction with respect to the base side.

Abstract: A first projection plate and a second projection plate of each segment of first plurality of segments cause gas flowing into each segment to flow out from each segment while causing rotation in the gas in different directions with respect to a rotational axis in a gas flow direction and then flow into each of two segments of second plurality of segments adjacent in a perpendicular direction to the gas flow direction.

Abstract: A charge air cooler includes a high temperature side heat exchanger and a low temperature side heat exchanger. The high temperature side heat exchanger is provided on a high temperature side cooling flow path through which a first refrigerant cooled by a first heat exchanger (radiator) flows. The low temperature side heat exchanger is provided on a low temperature side cooling flow path through which a second refrigerant cooled cooler than the first refrigerant by a second heat exchanger (sub-radiator) flows. The low temperature side heat exchanger cools, by the second refrigerant, intake air cooled by the high temperature side heat exchanger. According to the above charge air cooler, the second heat exchanger (sub-radiator) can be prevented from becoming big in size, and intake air temperature can be cooled to desired temperature.

Abstract: A first projection plate and a second projection plate of each segment of first plurality of segments cause gas flowing into each segment to flow out from each segment while causing rotation in the gas in different directions with respect to a rotational axis in a gas flow direction and then flow into each of two segments of second plurality of segments adjacent in a perpendicular direction to the gas flow direction.

Abstract: A forward-tilting protruding piece leans forward toward an upstream side in a gas flow direction. A rearward-tilting protruding piece is disposed downstream of the forward-tilting protruding piece and leans rearward toward a downstream side in the gas flow direction. The forward-tilting protruding piece is in a shape of a four- or more-sided polygon including a base side in contact with a peripheral surface of the gas passage and a pair of left and right sides. The base side is oriented obliquely with respect to a direction perpendicular to the gas flow direction. The angle of one of the sides which is located on the upstream side in the gas flow direction with respect to the base side is larger than the angle of the other of the sides which is located on the downstream side in the gas flow direction with respect to the base side.

Abstract: An exhaust gas heat exchanger includes a tube through which exhaust gas flows, a fin disposed in the tube, and protruded tabs protruded from the tube or the fin. Each of the protruded tabs is inclined to an upstream side, and has a polygonal shape more than a quadrilateral shape having at least a bottom side, one lateral side and another lateral side. An angle of the one lateral side to the bottom side is set smaller than 90 degrees and than an angle of the other lateral side to the bottom side. The bottom side is placed to intersect with a perpendicular direction to the exhaust gas flow direction, and the other lateral side is located upstream from the one lateral side. According to the exhaust gas heat exchanger, it is possible to improve heat exchange efficiency by generating a swirl flow for facilitating heat transfer effectively.

Abstract: A water-cooling apparatus for cooling an engine includes a radiator for cooling coolant, a first flow passage connected with the engine, a second flow passage branched from the first flow passage and connected with the radiator, a third flow passage whose one end is connected with the radiator and whose another end is connected with the first flow passage at a downstream from the branched point of the second flow passage, a regulating valve on the first flow passage for regulating a flow volume of the coolant in the radiator, and a pump on the first flow passage for circulating the coolant through the engine and/or the radiator. The regulating valve is configured to flows the coolant from the radiator to the first flow passage when it is opened. The apparatus has a simple circulation flow path, and thereby appropriate cooling can be done by regulating the flow volume.

Abstract: An exhaust gas recirculation (EGR) system includes a turbocharger having compressor and turbine wheels, a high-pressure intake passage provided between the compressor wheel and an intake port of an internal combustion engine, a CAC provided on the high-pressure intake passage to cool intake gas, a high-pressure exhaust passage provided between an exhaust port of the engine and the turbine wheel, an EGR passage branched from the high-pressure exhaust passage and connected to the high-pressure intake passage, and an EGR cooler for cooling EGR gas flowing through the EGR passage by coolant flowing through a coolant recirculation passage of the engine. A downstream end of the EGR passage is connected to the high-pressure intake passage at an upstream of the CAC. According to the EGR system, intake gas mixed with EGR gas can be supplied to the engine at desired temperature, so that fuel consumption of the engine can be improved.

Abstract: An exhaust gas heat exchanger includes a tube through which exhaust gas flows, a fin disposed in the tube, and protruded tabs protruded from the tube or the fin. Each of the protruded tabs is inclined to an upstream side, and has a polygonal shape more than a quadrilateral shape having at least a bottom side, one lateral side and another lateral side. An angle of the one lateral side to the bottom side is set smaller than 90 degrees and than an angle of the other lateral side to the bottom side. The bottom side is placed to intersect with a perpendicular direction to the exhaust gas flow direction, and the other lateral side is located upstream from the one lateral side. According to the exhaust gas heat exchanger, it is possible to improve heat exchange efficiency by generating a swirl flow for facilitating heat transfer effectively.

Abstract: A composite heat exchanger system includes an air cooled condenser, a sub-radiator and a main radiator, and it is formed in a state where a tank of the sub-radiator is communicated with a tank of the main radiator. A water cooled condenser is contained in a tank of the sub-radiator. A part of a flowing medium that is cooled down by the main radiator is introduced in the sub-radiator to cool the flowing medium of the water cooled condenser. The flowing medium that is cooled down by the water cooled condenser is introduced in the air cooled condenser to be cooled.

Abstract: An object code generating system includes: a storage unit configured to store a first source file; and an object code generating section. The object code generating section is configured to read the first source file, generate function data indicating an arrangement address and size of each of the functions in the first source file, generate an execution format file for the first source file; and read a second source file obtained by modifying at least one of the functions as a specific function in the first source file, and the function data from the storage unit, generate a dummy function corresponding to the modified specific function when the modified specific function is discovered in the second source file, arrange the dummy function at an arrangement address different from the arrangement addresses of the functions, and arrange a branch command to the dummy function at the different arrangement address.

Abstract: A charge air cooler includes a high temperature side heat exchanger and a low temperature side heat exchanger. The high temperature side heat exchanger is provided on a high temperature side cooling flow path through which a first refrigerant cooled by a first heat exchanger (radiator) flows. The low temperature side heat exchanger is provided on a low temperature side cooling flow path through which a second refrigerant cooled cooler than the first refrigerant by a second heat exchanger (sub-radiator) flows. The low temperature side heat exchanger cools, by the second refrigerant, intake air cooled by the high temperature side heat exchanger. According to the above charge air cooler, the second heat exchanger (sub-radiator) can be prevented from becoming big in size, and intake air temperature can be cooled to desired temperature.

Abstract: A thermally responsive valve is installed in a coolant circuit of an engine 1, and is provided with an operating member 7 containing a thermal expansion element 15 which expands and contracts according to a temperature change of coolant to change a longitudinal length of the operating member 7 due to thermal expansion and contraction thereof so as to open and close a valve in the coolant circuit. The thermal expansion element 15 includes a first thermal expansion element 15a with lower thermal expansion start temperature and a lower thermal expansion response speed, and a second thermal expansion element 15b with a higher thermal expansion start temperature and a higher expansion response speed.

Abstract: A combined heat-exchanger includes a first air-cooled heat-exchanger for cooling coolant for a heat generator other than an internal combustion engine in an automobile and a second air-cooled heat-exchanger for cooling refrigerant for air-conditioning. The first air-cooled heat-exchanger includes an upstream tank into which the coolant flows, a downstream tank form which the refrigerant flows out, flow channel members that communicate the upstream tank with the downstream tank, heat release fins that are alternately stacked with the flow channel members, and a water-cooled heat-exchanger for cooling the refrigerant. The water-cooled heat-exchanger is disposed within the downstream tank, and includes an inlet port to which the refrigerant flows at its upper portion and an outlet port from which the refrigerant flows out at its lower portion. According to the heat-exchanger, staying of oil mixed in the refrigerant can be prevented, heat exchange efficiency can improve and downsizing can be achieved.

Abstract: An object code generating system includes: a storage unit configured to store a first source file; and an object code generating section.

Abstract: In a tank structure of a heat exchanger 1 where end portions of a plurality of tubes 8 are inserted in and fixed to a tube plate 5, 6 of a tank 3, 4 that is made of aluminum material, a bead 12a is provided at a position of a tube 8 side heading from a half position of a height H of a side wall portions 11a and 11b of the tank 3, 4 to extend in a direction perpendicular to a longitudinal direction of the tubes 8.

Abstract: A vehicle cooling system comprises a vehicle unit, a heat exchanger, a cooling fan, a coolant pump, a three-way valve, and a control unit. The heat exchanger is arranged in the coolant route to selectively receive a coolant from the coolant outlet of the vehicle unit. The cooling fan is arranged to blow cooling air to the heat exchanger. The coolant pump is arranged to circulate the coolant through the coolant route. The three-way valve is arranged to switch the coolant route between a heat exchanger route that passes through the heat exchanger and a bypass route that bypasses the heat exchanger. The control unit is configured to control operation of at least one of the cooling fan, the three-way valve and the coolant pump based on a temperature of the coolant at the heat exchanger and a temperature of the coolant at the coolant outlet of the vehicle unit.

Abstract: An automotive heat exchanging system has a heat exchanger comprising a condenser and a radiator, an electric fan located in the front of an engine and an automatic transmission. A shroud is attached to and covers peripheral portions of the electric fan and the heat exchanger to prevent air from bypassing the shutter. The shroud forms an air passage inside of it for allowing airflow through the heat exchanger to flow toward the automatic transmission. A shutter is disposed in the shroud and attached at a periphery of the shroud. The shutter is controlled to open and close the air passage by a controller based on oil temperature.