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, wherein the input member is continuously interconnected to the third member of the fourth planetary gear set and wherein the output member is continuously interconnected to the third member of the third planetary gear set and the second member of the fourth planetary gear set;
a first interconnecting member continuously interconnecting the first member of the first planetary gear set and the first member of the second planetary gear set with the second member of the third planetary gear set;
a second interconnecting member continuously interconnecting the second member of the first planetary gear set with the third member of the second planetary gear set;
a third interconnecting member continuously interconnecting the third member of the third planetary gear set with the second member of the fourth planetary gear set;
six torque transmitting mechanisms selectively engageable to interconnect one of the first, second, and third members with at least another of the first, second, third members and a stationary member, 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, andwherein an imaginary plane is disposed perpendicular to an input member axis and between an end of the input member and the four planetary gear sets, and wherein the first planetary gear set is adjacent the imaginary plane and the third planetary gear set is remote from the imaginary plane, the second planetary gear set is adjacent the first planetary gear set and the fourth planetary gear set is disposed between the second planetary gear set and third planetary gear set.
8 Assignments
0 Petitions
Accused Products
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.
111 Citations
22 Claims
-
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, wherein the input member is continuously interconnected to the third member of the fourth planetary gear set and wherein the output member is continuously interconnected to the third member of the third planetary gear set and the second member of the fourth planetary gear set; a first interconnecting member continuously interconnecting the first member of the first planetary gear set and the first member of the second planetary gear set with the second member of the third planetary gear set; a second interconnecting member continuously interconnecting the second member of the first planetary gear set with the third member of the second planetary gear set; a third interconnecting member continuously interconnecting the third member of the third planetary gear set with the second member of the fourth planetary gear set; six torque transmitting mechanisms selectively engageable to interconnect one of the first, second, and third members with at least another of the first, second, third members and a stationary member, 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, and wherein an imaginary plane is disposed perpendicular to an input member axis and between an end of the input member and the four planetary gear sets, and wherein the first planetary gear set is adjacent the imaginary plane and the third planetary gear set is remote from the imaginary plane, the second planetary gear set is adjacent the first planetary gear set and the fourth planetary gear set is disposed between the second planetary gear set and third planetary gear set. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A transmission comprising:
-
an input member; an output member; first, second, third and fourth planetary gear sets each having first, second and third members, wherein the input member is continuously interconnected with the third member of the fourth planetary gear set and wherein the output member is continuously interconnected with third member of the third planetary gear set and the second member of the fourth planetary gear set; a first interconnecting member continuously interconnecting the first member of the first planetary gear set with the first member of the second planetary gear set and the second member of the third planetary gear set; a second interconnecting member continuously interconnecting the second member of the first planetary gear set with the third member of the second planetary gear set; a third 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 selectively engageable to interconnect one of the first, second, and third members with at least another of the first, second, third members and a 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, and wherein an imaginary plane is disposed perpendicular to an input member axis and between an end of the input member and the four planetary gear sets, and wherein the first planetary gear set is adjacent the imaginary plane and the fourth planetary gear set is remote from the imaginary plane, the third planetary gear set is adjacent the first planetary gear set and the second planetary gear set is disposed between the third planetary gear set and fourth planetary gear set. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. A transmission comprising:
-
an input member; an output member; first, second, and third planetary gear sets each having sun gears, carrier members and ring gears, wherein the input member is continuously interconnected to the sun gear member of the fourth planetary gear set and wherein the output member is continuously interconnected to the ring gear member of the third planetary gear set and the carrier member of the fourth planetary gear set; a first interconnecting member continuously interconnecting the ring gear member of the first planetary gear set and the ring gear member of the second planetary gear set with the carrier member of the third planetary gear set; a second interconnecting member continuously interconnecting the carrier member of the first planetary gear set with the sun gear member of the second planetary gear set; a third interconnecting member continuously interconnecting the ring gear member of the third planetary gear set with the carrier member of the fourth planetary gear set; a first torque transmitting mechanism selectively engageable to interconnect the input member and the sun gear member of the fourth planetary gear set with the sun gear member of the first planetary gear set; a second torque transmitting mechanism selectively engageable to interconnect the input member and the sun gear member of the fourth planetary gear set with the carrier member of the first planetary gear set and the sun gear member of the second planetary gear set; a third torque transmitting mechanism selectively engageable to interconnect the carrier member of the second planetary gear set with the ring gear member of the fourth planetary gear set; a fourth torque transmitting mechanism selectively engageable to interconnect the sun gear member of the first planetary gear set with the stationary element; a fifth torque transmitting mechanism selectively engageable to interconnect the carrier member of the first planetary gear set and the sun gear member of the second planetary gear set with the stationary element; and a sixth torque transmitting mechanism selectively engageable to interconnect the sun gear member of the third 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, and wherein an imaginary plane is disposed perpendicular to an input member axis and between an end of the input member and the four planetary gear sets, and wherein the first planetary gear set is adjacent the imaginary plane and the third planetary gear set is remote from the imaginary plane, the second planetary gear set is adjacent the first planetary gear set and the fourth planetary gear set is disposed between the second planetary gear set and third planetary gear set, and wherein the input member and output member are axially aligned and only the input member intersects the imaginary plane.
-
-
22. A transmission comprising:
-
an input member; an output member; first, second, and third planetary gear sets each having sun gears, carrier members and ring gears, wherein the input member is continuously interconnected with the sun gear member of the fourth planetary gear set and wherein the output member is continuously interconnected with ring gear member of the third planetary gear set and the carrier member of the fourth planetary gear set; a first interconnecting member continuously interconnecting the ring gear member of the first planetary gear set with the ring gear member of the second planetary gear set and the carrier member of the third planetary gear set; a second interconnecting member continuously interconnecting the carrier member of the first planetary gear set with the sun gear member of the second planetary gear set; a third interconnecting member continuously interconnecting the ring gear member of the third planetary gear set with the carrier member of the fourth planetary gear set; and a first torque transmitting mechanism selectively engageable to interconnect the input member and the sun gear member of the fourth planetary gear set with the sun gear member of the first planetary gear set; a second torque transmitting mechanism selectively engageable to interconnect the input member and the sun gear member of the fourth planetary gear set with the carrier member of the first planetary gear set and the sun gear member of the second planetary gear set; a third torque transmitting mechanism selectively engageable to interconnect the carrier member of the second planetary gear set with the ring gear member of the fourth planetary gear set; a fourth torque transmitting mechanism selectively engageable to interconnect the sun gear member of the first planetary gear set with the stationary member; a fifth torque transmitting mechanism selectively engageable to interconnect the carrier member of the first planetary gear set and the sun gear member of the second planetary gear set with the stationary member; and a sixth torque transmitting mechanism selectively engageable to interconnect the sun gear member of the third planetary gear set with the stationary member, 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, and wherein an imaginary plane is disposed perpendicular to an input member axis and between an end of the input member and the four planetary gear sets, and wherein the first planetary gear set is adjacent the imaginary plane and the fourth planetary gear set is remote from the imaginary plane, the third planetary gear set is adjacent the first planetary gear set and the second planetary gear set is disposed between the third planetary gear set and fourth planetary gear set, and wherein the input member and output member are axially aligned and only the input member intersects the imaginary plane.
-
Specification