Multi-speed transmission
First Claim
Patent Images
1. A transmission comprising:
- an input member;
an output member;
a first and a second planetary gear set assembly each having a first, second, third, and fourth rotating membersa first torque transmitting device selectively engageable to interconnect the second rotating member of the first planetary gear set assembly with the third rotating member of the second planetary gear set assemblya second torque transmitting device selectively engageable to interconnect the third rotating member of the first planetary gear set assembly with the first rotating member of the second planetary gear set assemblya third torque transmitting device selectively engageable to interconnect the third rotating member of the first planetary gear set assembly with the fourth rotating member of the second planetary gear set assemblya fourth torque transmitting device selectively engageable to interconnect the fourth rotating member of the first planetary gear set assembly with the fourth rotating member of the second planetary gear set assemblya fifth torque transmitting device selectively engageable to interconnect the first rotating member of the first planetary gear set assembly with the stationary member;
a sixth torque transmitting device selectively engageable to interconnect the first rotating member of the second planetary gear set assembly with the stationary member; and
wherein the torque transmitting devices are each selectively engageable in combinations of at least three to establish a plurality of forward speed ratios and at least one reverse speed ratio between the input member and the output member.
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Abstract
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 include clutches and brakes. The torque transmitting devices are each selectively engageable in combinations of at least three to establish a plurality of forward speed ratios and at least one reverse speed ratio between the input member and the output member.
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Citations
20 Claims
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1. A transmission comprising:
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an input member; an output member; a first and a second planetary gear set assembly each having a first, second, third, and fourth rotating members a first torque transmitting device selectively engageable to interconnect the second rotating member of the first planetary gear set assembly with the third rotating member of the second planetary gear set assembly a second torque transmitting device selectively engageable to interconnect the third rotating member of the first planetary gear set assembly with the first rotating member of the second planetary gear set assembly a third torque transmitting device selectively engageable to interconnect the third rotating member of the first planetary gear set assembly with the fourth rotating member of the second planetary gear set assembly a fourth torque transmitting device selectively engageable to interconnect the fourth rotating member of the first planetary gear set assembly with the fourth rotating member of the second planetary gear set assembly a fifth torque transmitting device selectively engageable to interconnect the first rotating member of the first planetary gear set assembly with the stationary member; a sixth torque transmitting device selectively engageable to interconnect the first rotating member of the second planetary gear set assembly with the stationary member; and wherein the torque transmitting devices are each selectively engageable in combinations of at least three to establish a plurality of forward speed ratios and at least one reverse speed ratio between the input member and the output member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A transmission comprising:
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an input member; an output member; a first and a second planetary gear set assembly each having a first, second, third, and fourth rotating members, wherein the input member is continuously interconnected with the second rotating member of the first planetary gear set assembly and the output member is continuously interconnected with the second rotating member of the second planetary gear set assembly; a first torque transmitting device selectively engageable to interconnect the first planetary gear set assembly with the second planetary gear set assembly; a second torque transmitting device selectively engageable to interconnect the first planetary gear set assembly with the second planetary gear set assembly; a third torque transmitting device selectively engageable to interconnect the first planetary gear set assembly with the second planetary gear set assembly; a fourth torque transmitting device selectively engageable to interconnect the first planetary gear set assembly with the second planetary gear set assembly; a fifth torque transmitting device selectively engageable to interconnect the first planetary gear set assembly with the stationary member; a sixth torque transmitting device selectively engageable to interconnect the second planetary gear set assembly with the stationary member; and wherein the torque transmitting devices are each selectively engageable in combinations of at least three to establish a plurality of forward speed ratios and at least one reverse speed ratio between the input member and the output member. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification