| 摘要 |
PROBLEM TO BE SOLVED: To improve power performance by efficiently utilizing the driving force of an engine by a 6-speed gear shift power train and a hydraulic control system and to improve a gear shifting feeling and fuel consumption. SOLUTION: A main gear shifting part is formed that a first planetary carrier and a second ring gear being the output elements output elements of first and second pinion planetary gear sets are intercoupled and a first ring gear and a second planetary carrier are intercoupled; a first sun gear, the second planetary carrier, and a sun gear are coupled to an input shaft through three clutches; a coupling member through which a first ring gear and a second planetary carrier are intercoupled is fixed at a housing through a first brake and a first one way clutch; and a second sun gear is fixed at a housing by a second brake.And an auxiliary gear shifting part is formed that a third planetary gear set where a third ring gear forms an input element and a third planetary gear is worked as and output element is coupled to the auxiliary gear shifting part through a forth clutch and the auxiliary gear shifting part is coupled to a housing through a third brake and a second one way clutch. The six-speed power train comprises the main gear shifting part and the auxiliary gear shifting part which are situated on the same axis. COPYRIGHT: (C)2004,JPO |
