MULTI-SPEED TRANSMISSION
First Claim
Patent Images
1. A transmission comprising:
- an input member;
an output member;
first, second, third and fourth planetary gear sets each having first, second and third members;
a first interconnecting member continuously interconnecting the third member of the first planetary gear set with the second member of the third planetary gear set;
a second interconnecting member continuously interconnecting the third member of the second planetary gear set with the second member of the third planetary gear set;
a third interconnecting member continuously interconnecting the second member of the second planetary gear set with the first member of the fourth planetary gear set;
a fourth interconnecting member continuously interconnecting the second member of the first planetary gear set with a stationary member;
a fifth interconnecting member continuously interconnecting the third member of the third planetary gear set with the second member of the fourth planetary gear set; and
six torque transmitting mechanisms each selectively engageable to interconnect at least one of the first, second, and third members with at least one other of the first, second, third members and the stationary element, andwherein the torque transmitting mechanisms are selectively engageable in combinations of at least three to establish at least nine 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.
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Citations
23 Claims
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1. A transmission comprising:
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an input member; an output member; first, second, third and fourth planetary gear sets each having first, second and third members; a first interconnecting member continuously interconnecting the third member of the first planetary gear set with the second member of the third planetary gear set; a second interconnecting member continuously interconnecting the third member of the second planetary gear set with the second member of the third planetary gear set; a third interconnecting member continuously interconnecting the second member of the second planetary gear set with the first member of the fourth planetary gear set; a fourth interconnecting member continuously interconnecting the second member of the first planetary gear set with a stationary member; a fifth interconnecting member continuously interconnecting the third member of the third planetary gear set with the second member of the fourth planetary gear set; and six torque transmitting mechanisms each selectively engageable to interconnect at least one of the first, second, and third members with at least one other of the first, second, third members and the stationary element, and wherein the torque transmitting mechanisms are selectively engageable in combinations of at least three to establish at least nine 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, 9, 10)
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11. A transmission comprising:
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an input member; an output member; first, second, third and fourth planetary gear sets each having first, second and third members; a first torque transmitting mechanism selectively engageable to interconnect the first member of the first planetary gear set with an intermediate connecting member; a second torque transmitting mechanism selectively engageable to interconnect the first member of the third planetary gear set with an intermediate connecting member; a third torque transmitting mechanism selectively engageable to interconnect the first member of the second planetary gear set with an intermediate connecting member; a fourth torque transmitting mechanism selectively engageable to interconnect the second member of the second planetary gear set with an intermediate connecting member; a fifth torque transmitting mechanism selectively engageable to interconnect the first member of the second planetary gear set with the stationary element; and a sixth torque transmitting mechanism selectively engageable to interconnect the third member of the fourth planetary gear set with the stationary element, and wherein the torque transmitting mechanisms are selectively engageable in combinations of at least three to establish at least nine forward speed ratios and at least one reverse speed ratio between the input member and the output member. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A transmission comprising:
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an input member; an output member; first, second, third and fourth planetary gear sets each having a sun gear member, a carrier member and a ring gear member, wherein the input member is continuously interconnected to the sun gear member of the first planetary gear set and the output member is continuously interconnected to the ring gear member of the third planetary gear set; a first torque transmitting mechanism selectively engageable to interconnect the ring gear member of the first planetary gear set with an intermediate connecting member; a second torque transmitting mechanism selectively engageable to interconnect the sun gear member of the third planetary gear set with the intermediate connecting member; a third torque transmitting mechanism selectively engageable to interconnect the sun gear member of the second planetary gear set with the intermediate connecting member; a fourth torque transmitting mechanism selectively engageable to interconnect the carrier member of the second planetary gear set with the intermediate connecting member; a fifth torque transmitting mechanism selectively engageable to interconnect the sun gear member of the second planetary gear set with a stationary element; and a sixth torque transmitting mechanism selectively engageable to interconnect the ring gear member of the fourth planetary gear set with the stationary element, and wherein the torque transmitting mechanisms are selectively engageable in combinations of at least three to establish at least nine forward speed ratios and at least one reverse speed ratio between the input member and the output member. - View Dependent Claims (20, 21, 22, 23)
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Specification