Multi-speed transmission
First Claim
Patent Images
1. A multiple speed transmission, comprising:
- an input member;
an output member;
first, second, third and fourth planetary gearsets each having first, second and third members;
a plurality of interconnecting members each connected between at least one of the first, second, third, and fourth planetary gearsets and at least another of the first, second, third, and fourth planetary gearsets;
a first torque-transmitting mechanism selectively engageable to interconnect the second member of the first planetary gearset with a stationary member;
a second torque-transmitting mechanism selectively engageable to interconnect the first member of the second planetary gearset with the stationary member;
a third torque-transmitting mechanism selectively engageable to interconnect the third member of the third planetary gearset with the stationary member;
a fourth torque-transmitting mechanism selectively engageable to interconnect the second member of the first planetary gearset with the first member of the first planetary gearset and the input member;
a fifth torque-transmitting mechanism selectively engageable to interconnect the second member of the first planetary gearset with the second member of the second planetary gearset, the first member of the third planetary gearset, and the first member of the fourth planetary gearset; and
a sixth torque-transmitting mechanism selectively engageable to interconnect the third member of the fourth planetary gearset with the second member of the third planetary gearset and the output member;
wherein the torque transmitting mechanisms are selectively engageable in combinations of three to establish nine forward speed ratios and one reverse speed ratio between the input member and the output member;
wherein, there are no more than six torque-transmitting mechanisms;
wherein one of the first, second, third and fourth planetary gearsets comprises an idler planet planetary gearset.
1 Assignment
0 Petitions
Accused Products
Abstract
The present disclosure provides a multiple speed transmission having an input member, an output member, a plurality of planetary gearsets, a plurality of interconnecting members and a plurality of torque-transmitting mechanisms. The plurality of planetary gear sets includes first, second and third members. The input member is continuously interconnected with at least one member of one of the plurality of planetary gear sets, and the output member is continuously interconnected with another member of one of the plurality of planetary gear sets.
-
Citations
20 Claims
-
1. A multiple speed transmission, comprising:
-
an input member; an output member; first, second, third and fourth planetary gearsets each having first, second and third members; a plurality of interconnecting members each connected between at least one of the first, second, third, and fourth planetary gearsets and at least another of the first, second, third, and fourth planetary gearsets; a first torque-transmitting mechanism selectively engageable to interconnect the second member of the first planetary gearset with a stationary member; a second torque-transmitting mechanism selectively engageable to interconnect the first member of the second planetary gearset with the stationary member; a third torque-transmitting mechanism selectively engageable to interconnect the third member of the third planetary gearset with the stationary member; a fourth torque-transmitting mechanism selectively engageable to interconnect the second member of the first planetary gearset with the first member of the first planetary gearset and the input member; a fifth torque-transmitting mechanism selectively engageable to interconnect the second member of the first planetary gearset with the second member of the second planetary gearset, the first member of the third planetary gearset, and the first member of the fourth planetary gearset; and a sixth torque-transmitting mechanism selectively engageable to interconnect the third member of the fourth planetary gearset with the second member of the third planetary gearset and the output member; wherein the torque transmitting mechanisms are selectively engageable in combinations of three to establish nine forward speed ratios and one reverse speed ratio between the input member and the output member; wherein, there are no more than six torque-transmitting mechanisms; wherein one of the first, second, third and fourth planetary gearsets comprises an idler planet planetary gearset. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A multiple speed transmission, comprising:
-
an input member; an output member; first, second, third and fourth planetary gearsets each having a sun gear, a carrier member, and a ring gear; a plurality of interconnecting members each connected between at least one of the first, second, third, and fourth planetary gearsets and at least another of the first, second, third, and fourth planetary gearsets; a first torque-transmitting mechanism selectively engageable to interconnect the carrier member of the first planetary gearset with a stationary member; a second torque-transmitting mechanism selectively engageable to interconnect the sun gear of the second planetary gearset with the stationary member; a third torque-transmitting mechanism selectively engageable to interconnect the ring gear of the third planetary gearset with the stationary member; a fourth torque-transmitting mechanism selectively engageable to interconnect the carrier member of the first planetary gearset with the sun gear of the first planetary gearset and the input member; a fifth torque-transmitting, mechanism selectively engageable to interconnect the carrier member of the first planetary gearset with the carrier member of the second planetary gearset, the sun gear of the third planetary gearset, and the sun gear of the fourth planetary gearset; and a sixth torque-transmitting mechanism selectively engageable to interconnect the ring gear of the fourth planetary gearset with the carrier member, of the third planetary gearset and the output member; 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 (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. A multiple speed transmission, comprising:
-
an input member; an output member; first, second, third and fourth planetary gearsets each having a sun gear, a carrier member, and a ring gear; a plurality of interconnecting members each connected between at least one of the first, second, third, and fourth planetary gearsets and at least another of the first, second, third, and fourth planetary gearsets; a first torque-transmitting mechanism selectively engageable to interconnect the carrier member of the first planetary gearset with a stationary member; a second torque-transmitting mechanism selectively engageable to interconnect the sun gear of the second planetary gearset with the stationary member; a third torque-transmitting mechanism selectively engageable to interconnect the ring gear of the third planetary gearset with the stationary member; a fourth torque-transmitting mechanism selectively engageable to interconnect the carrier member of the first planetary grand with the sun gear of the first planetary gearset and the input member; a fifth torque-transmitting mechanism selectively engageable to interconnect the carrier member of the first planetary gearset with the carrier member of the second planetary gearset, the sun gear of the third planetary gearset, and the atm gear of the fourth planetary gearset; a sixth torque-transmitting mechanism selectively engageable to interconnect the ring gear of the fourth planetary gearset with the carrier member of the third planetary gearset and the output member; a first interconnecting member of the plurality of interconnecting members continuously interconnecting the ring gear of the first planetary gearset with the ring gear of the second planetary gearset; a second interconnecting member of the plurality of interconnecting members continuously interconnecting the carrier member of the second planetary gearset with the sun gear of the third planetary gearset and the sun gear of the fourth planetary gearset; a third interconnecting member of the plurality of interconnecting members directly connected to the second sun gear; a fourth interconnecting member of the plurality of interconnecting members directly connected to the third ring gear; a fifth interconnecting member of the plurality of interconnecting members directly connected to the fourth ring gear; and a sixth interconnecting member of the plurality of interconnecting members directly connected to the first carrier member; wherein the torque transmitting mechanisms are selectively engageable in combinations of three to establish nine forward speed ratios and a reverse speed ratio between the input member and the output member.
-
Specification