| 摘要 |
PROBLEM TO BE SOLVED: To provide an automatic change gear capable of securing durability of an oil seal even when a temperature of a housing is increased. SOLUTION: This automatic change gear comprises an oil seal having an oil pump driven by a sprocket, arranged between a housing and a torque converter sleeve, and hydraulic-sealing a cover member, the sprocket, and a dry chamber for housing a space which is formed inside the housing in a radial direction and to which a predetermined hydraulic pressure is introduced. An oil groove communicating the space with a wet chamber is provided to at least one of a face opposed to the sprocket of the housing and a face opposed to the sprocket of the cover member. COPYRIGHT: (C)2009,JPO&INPIT
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