Abstract: In a heat exchange unit, a shutter device is disposed on a vehicle front side with respect to a coolant heat exchanger to open and close a passage for traveling air directed toward the coolant heat exchanger. A blower is switchable between a first blowing state in which air flows from the vehicle front side to the vehicle rear side and a second blowing state in which air flows from the vehicle rear side to the vehicle front side. In a case where a switch that makes a vehicle travelable is in an on state, a control unit switches the blower to the second blowing state, while an open degree of the shutter device is set at a closing side from a maximum open degree of the shutter device when a temperature of the engine coolant is equal to or lower than a predetermined temperature determination value.

Abstract: A vehicular cooling device includes a heat medium circuit, a waste heat supply device, a heat exchanger, and a heater. A heat medium circulates in the heat medium circuit. The waste heat supply device is configured to generate a waste heat in accordance with operation of the waste heat supply device and supply the waste heat to the heat medium. The heat exchanger is configured to exchange heat between the heat medium and a lubricant lubricating a transmission of a vehicle. The heater is configured to heat the lubricant that is inside the heat exchanger. According to this vehicular cooling device, since the heater heats the lubricant, the transmission can be warmed up early, and thereby friction in the transmission decreases to improve fuel economy.

Abstract: In a heat exchange unit, a shutter device is disposed on a vehicle front side with respect to a coolant heat exchanger to open and close a passage for traveling air directed toward the coolant heat exchanger. A blower is switchable between a first blowing state in which air flows from the vehicle front side to the vehicle rear side and a second blowing state in which air flows from the vehicle rear side to the vehicle front side. In a case where a switch that makes a vehicle travelable is in an on state, a control unit switches the blower to the second blowing state, while an open degree of the shutter device is set at a closing side from a maximum open degree of the shutter device when a temperature of the engine coolant is equal to or lower than a predetermined temperature determination value.

Abstract: A vehicular cooling device includes a heat medium circuit, a waste heat supply device, a heat exchanger, and a heater. A heat medium circulates in the heat medium circuit. The waste heat supply device is configured to generate a waste heat in accordance with operation of the waste heat supply device and supply the waste heat to the heat medium. The heat exchanger is configured to exchange heat between the heat medium and a lubricant lubricating a transmission of a vehicle. The heater is configured to heat the lubricant that is inside the heat exchanger. According to this vehicular cooling device, since the heater heats the lubricant, the transmission can be warmed up early, and thereby friction in the transmission decreases to improve fuel economy.

Abstract: A receiver includes a cylindrical main tank; a cylindrical internal thread component having an internal thread; a cap having a male thread threaded with the internal thread; a sealing attached to the cap; and a filter portion arranged in the cap. The internal thread component is coaxially arranged to an inner circumference face of the tank. The filter portion includes an internal passage extending inside of the cap, and a net that collects a foreign matter contained in refrigerant flowing through the internal passage.

Abstract: A receiver includes a cylindrical main tank; a cylindrical internal thread component having an internal thread; a cap having a male thread threaded with the internal thread; a sealing attached to the cap; and a filter portion arranged in the cap. The internal thread component is coaxially arranged to an inner circumference face of the tank. The filter portion includes an internal passage extending inside of the cap, and a net that collects a foreign matter contained in refrigerant flowing through the internal passage.

Abstract: A paste composition for aluminum brazing of the invention contains 40 to 65% by weight of a metal powder for brazing (a), 5 to 35% by weight of a fluoride type flux (b), 1 to 10% by weight of a methacrylic acid ester type polymer (c), and 10 to 40% by weight of an organic solvent (d); and the component (d) is a hydrocarbon type organic solvent having no aromatic ring and no hydroxyl group and the composition is in a paste-like state having a viscosity of 6,000 to 200,000 mPa·s at 23° C. and accordingly, the storage stability and applicability (practically, discharge property and pressure stability by using a dispenser) and brazing property can be improved in good balance.

Abstract: A vehicular footrest includes a footrest part (36) for making contact with a foot (F) of a vehicle occupant (M), and a footrest base member (34). The footrest has a front surface load absorption mechanism (33) for absorbing a load applied to a firewall (23), and a lower limb load absorption mechanism (35) for absorbing a load applied from a vehicle occupant to the footrest part (36).

Abstract: A heat exchange tube having a flat shape includes a plurality of fluid paths having a circular cross section and extending in a longitudinal direction of the tube. Each fluid path is parallel to each other fluid path. The tube is dimensioned such that a distance between two adjacent fluid paths is defined as Wt, and a circumferential thickness between a surface of the tube and an outermost fluid path is defined as Ht. The distance Wt and the circumferential thickness Ht have a relationship as 0.42?Ht/Wt?0.98.

Abstract: A vehicular footrest is disclosed which includes a footrest part (36) for making contact with a foot (F) of a vehicle occupant (M), and a footrest base member (34). The footrest has a front surface load absorption mechanism (33) for absorbing a load applied to a firewall (23), and a lower limb load absorption mechanism (35) for absorbing a load applied from a vehicle occupant to the footrest part (36).

Abstract: In an internal heat exchanger, when a corresponding diameter of a high pressure passage 5a is ?h, a passage length Lh of the high pressure passage (5a) is so set as to satisfy the relation 9.16/{LN(4.5??h+1.03)}<Lh<46/{LN(4.5??h+1.03)}, and when a corresponding diameter of a low pressure passage 5c is ?l, a passage length Ll of the low pressure passage 5c is so set as to satisfy the relation 9.16/{LN(0.56×6??l+1.02)}<Ll<46/{LN(0.56×6??l+1.02)}, a passage sectional area Ah of the high pressure passage 5a is so set as to satisfy the relation 100×(0.25×?h1.2)?1/(0.04×?h+1.7)?Ah?100×(500×?h1.2)?1(0.04×?h+1.7), and a passage sectional area Al of the low pressure passage 5c is so set as to satisfy the relation 1.65/?l0.67<Al<626/?l0.67.

Abstract: There is provides a heat exchanger comprising: a plurality of tubes (110) stacked on each other; and a pair of header tanks (140), each header tank (140) having a flow section (151) in which fluid flows, extending in a direction of stack of the tubes (110), wherein both end sections (111) of the tubes (110) in the longitudinal direction are joined to the pair of header tanks (140), the flow section (151) of each header tank (140) and the inside of each tube (110) are communicated with each other, a tip position (a) of the tube end section (111) is arranged in an outside region of the flow section (151), and an inner wall width size (b) of the flow section (151) is smaller than a size (c) in the width direction of the header tank (140) at the tube end section (111).

Abstract: A paste composition for aluminum brazing of the invention contains 40 to 65% by weight of a metal powder for brazing (a), 5 to 35% by weight of a fluoride type flux (b), 1 to 10% by weight of a methacrylic acid ester type polymer (c), and 10 to 40% by weight of an organic solvent (d); and the component (d) is a hydrocarbon type organic solvent having no aromatic ring and no hydroxyl group and the composition is in a paste-like state having a viscosity of 6,000 to 200,000 mPa·s at 23° C. and accordingly, the storage stability and applicability (practically, discharge property and pressure stability by using a dispenser) and brazing property can be improved in good balance.

Abstract: In a heat exchanger, a core has a first core portion including first tubes and a second core portion including second tubes. The first tubes defines first passages through which an internal fluid flows and the second tubes defines second passages through which the internal fluid passed through the first passages flows. A flow direction of the internal fluid passed through a first section of the first core portion and a flow direction of the refrigerant passed through a second section of the first core portion are changed with respect to a direction that the tubes are layered, before flowing in the second core portion. Thus, the internal fluid passed through the first section of the first core portion flows into a second section of the second core portion and the internal fluid passed through the second section of the first core portion flows into a first section of the second core portion.

Abstract: A heat exchanger includes a connector for connecting a header tank to an exterior pipe. The connector includes a first member configured to define a communication path through which a tank open portion of the header tank communicates with an interior of the exterior pipe, and a second member to which the first member is fixed. The first member and the second member are fixed to each other after being separately formed by pressing, and the second member has a fastening portion through which the connector is fastened to the exterior pipe. Furthermore, the first member includes a first connection portion that is fitted into the tank open portion at one open side of the communication path, and a second connection portion fitted to an open portion of the exterior pipe at other open side of the communication path.

Abstract: An evaporator operated with the carbon dioxide gas, comprises at least a unit core including a plurality of heat transmission tubes having a path with a refrigerant flowing therein, a first tank connected to an end opening of the heat transmission tubes and formed with a refrigerant supply path and a second tank connected to the other end opening of the heat transmission tubes and formed with a refrigerant discharge path. The width L1 of the unit core is given as 50 mm?L1?175 mm. The equivalent diameter d of the refrigerant supply path of the first tank and the refrigerant discharge path of the second tank is given as 4.7 mm?d?9.6 mm.

Abstract: In an internal heat exchanger, when a corresponding diameter of a high pressure passage 5a is ?h, a passage length Lh of the high pressure passage (5a) is so set as to satisfy the relation 9.16/{LN(4.5??h+1.03)}<Lh<46/{LN(4.5??h+1.03)}, and when a corresponding diameter of a low pressure passage 5c is ?I, a passage length LI of the low pressure passage 5c is so set as to satisfy the relation 9.16/{LN(0.56×6??I+1.02)}<LI<46/{LN(0.56×6??I+1.02)}, a passage sectional area Ah of the high pressure passage 5a is so set as to satisfy the relation 100×(0.25×?h1.2)?1/(0.04×?h+1.7)?Ah?100×(500×?h1.2)?1(0.04×?h+1.7), and a passage sectional area AI of the low pressure passage 5c is so set as to satisfy the relation 1.65/?I0.67<AI<626/?I0.67.

Abstract: A heat exchanger tube improved in endurance to chipping, while securing performance, by changing the tube specifications, wherein, for example, fluid circulating holes are formed to be substantially rectangular in cross-section, and, when a width direction thickness of a front side wall part of the tube is “T” and a thickness of partition wall parts “A”, the relationship 3.1?T/A?6.1 is made to stand by the shaping process. According to this, in a rectangular hole tube, it is possible to change the dimensional relationship of the tube while securing performance so as to improve the endurance to chipping from the front frontal direction to 150 km/h (the conventional endurance being 100 km/h, a ratio to the conventional value of 1.5).

Abstract: An evaporator operated with the carbon dioxide gas, comprises at least a unit core including a plurality of heat transmission tubes having a path with a refrigerant flowing therein, a first tank connected to an end opening of the heat transmission tubes and formed with a refrigerant supply path and a second tank connected to the other end opening of the heat transmission tubes and formed with a refrigerant discharge path. The width L1 of the unit core is given as 50 mm?L1?175 mm. The equivalent diameter d of the refrigerant supply path of the first tank and the refrigerant discharge path of the second tank is given as 4.7 mm?d?9.6 mm.

Abstract: There is provides a heat exchanger comprising: a plurality of tubes (110) stacked on each other; and a pair of header tanks (140), each header tank (140) having a flow section (151) in which fluid flows, extending in a direction of stack of the tubes (110), wherein both end sections (111) of the tubes (110) in the longitudinal direction are joined to the pair of header tanks (140), the flow section (151) of each header tank (140) and the inside of each tube (110) are communicated with each other, a tip position (a) of the tube end section (111) is arranged in an outside region of the flow section (151), and an inner wall width size (b) of the flow section (151) is smaller than a size (c) in the width direction of the header tank (140) at the tube end section (111).