23-08-2012 дата публикации
Номер: US20120214632A1
A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may include clutches and brakes. 1. A transmission comprising:an input member;an output member;a first and a second planetary gear set each having a first, a second, and a third member, wherein each of the first, second, and third members is included in one of a first rotary member, a second rotary member, a third rotary member, and a fourth rotary member, and wherein two of the members of the first planetary gear set are continuously separately connected with two of the members of the second planetary gear set to form two of the first, second, third, and fourth rotary members;a third and a fourth planetary gear set each having a first, a second, and a third member, wherein each of the first, second, and third members is included in one of a fifth rotary member, a sixth rotary member, a seventh rotary member, and an eighth rotary member, and wherein two of the members of the third planetary gear set are continuously separately connected with two of the members of the fourth planetary gear set to form two of the fifth, sixth, seventh, and eighth rotary members;a first transfer chain continuously connected with the third rotary member and the eighth rotary member;a second transfer chain continuously connected with the first rotary member; andsix torque transmitting devices each selectively engageable to connect at least one of the first, second, third, fourth, fifth, sixth, seventh, and eighth rotary members with at least one other of a stationary member, the first and second members of the first and second co-planar gear sets, and the first, second, third, fourth, fifth, sixth, seventh, and eight rotary members, andwherein the torque transmitting devices are selectively engageable in ...
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