| 摘要 |
A six-speed power train of an automatic transmission for a vehicle is provided to form a fluid path by distributing a brake and a clutch at front and rear portions of the power train. A first planetary gear set(PG1) is a double-pinion planetary gear set and includes a first manipulation component, operating as a normal input element, a second manipulation component, selectively operating as one of output and fixing elements, and a third manipulation component, selectively operating as one of input, output, and fixing elements. A second planetary gear set(PG2) is a Ravigneaux type planetary gear set and includes a first manipulation component, operating as a selective input element, a second manipulation component, operating as a normal output element, a third manipulation component, selectively operating as one of input and fixing elements, and a fourth manipulation component, operating as a selective fixing element. Clutch members(C1-C3) include three clutches which are applied between the manipulation components of the first planetary gear set and the manipulation components of the first and second planetary gear sets, so that the manipulation components are variably connected to one another. Brake members(B1-B3) include three brakes which variably couple the fixing element of the first and second planetary gear sets with a transmission housing.
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