| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce the weight of a heat exchanger disposed to a transmission, and to keep manufacturing cost thereof low. <P>SOLUTION: The transmission includes: the heat exchanger 18 exchanging heat between working fluid supplied to a predetermined portion in the transmission and a heat medium supplied from the outside; and a transmission case 14 of which a bearing surface 14b for mounting the heat exchanger 18 is disposed to an external surface thereof. The heat exchanger 18 has an abutting face 18a abutting on the bearing surface 14b in mounting thereof, and the abutting face 18a has an introducing part introducing the heat medium into the inside and a guiding-out part 18e2 guiding the heat medium to the outside. By abutment of the abutting face 18a on the bearing surface 14b, stiffness of the abutting face 18a having the heat medium introducing part and the heat medium guiding-out part 18e2 is increased. Therefore, the need of enhancing the stiffness of the part with the abutting face 18a itself is eliminated. The weight of the heat exchanger 18 is reduced, and its manufacturing cost is held down. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
