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 with at least one of the first and third members of the first and second planetary gear sets and the output member is continuously interconnected with the second member of the third planetary gear set;
a first interconnecting member continuously interconnecting one of the members of the first planetary gear set with one of the members of the second planetary gear set;
a second interconnecting member continuously interconnecting another one of the members of the first planetary gear set with another one of the members of the second planetary gear set;
a third interconnecting member continuously interconnecting the second member of the third planetary gear set with the second member of the fourth planetary gear set;
a fourth interconnecting member continuously interconnecting the third member of the third planetary gear set with the first member of the fourth planetary gear set;
a fifth interconnecting member continuously interconnecting at least one member of the first and second planetary gear sets with the first member of the third planetary gear set; and
six torque transmitting mechanisms, wherein three of the six torque transmitting mechanisms are each selectively engageable to interconnect the second planetary gear set to a stationary member and three of the six torque transmitting mechanisms are each selectively engageable to interconnect the fourth planetary gear set with the stationary member or the input member, andwherein the torque transmitting mechanisms are selectively engageable in combinations of at least two to establish at least nine forward speed ratios and at least one reverse speed ratio between the input member and the output member and the second planetary gear set includes a first and a second set of pinion gears.
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Abstract
A transmission includes an input and output member, four planetary gear sets each having first, second and third members, five interconnecting members continuously interconnecting members of the four planetary gear sets and six torque transmitting mechanisms selectively engageable to interconnect one of the first members, second members, and third members with at least one of another of the first members, second members, third members, and a stationary member. The torque transmitting mechanisms are selectively engageable in combinations of at least two 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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Citations
26 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, wherein the input member is continuously interconnected with at least one of the first and third members of the first and second planetary gear sets and the output member is continuously interconnected with the second member of the third planetary gear set; a first interconnecting member continuously interconnecting one of the members of the first planetary gear set with one of the members of the second planetary gear set; a second interconnecting member continuously interconnecting another one of the members of the first planetary gear set with another one of the members of the second planetary gear set; a third interconnecting member continuously interconnecting the second member of the third planetary gear set with the second member of the fourth planetary gear set; a fourth interconnecting member continuously interconnecting the third member of the third planetary gear set with the first member of the fourth planetary gear set; a fifth interconnecting member continuously interconnecting at least one member of the first and second planetary gear sets with the first member of the third planetary gear set; and six torque transmitting mechanisms, wherein three of the six torque transmitting mechanisms are each selectively engageable to interconnect the second planetary gear set to a stationary member and three of the six torque transmitting mechanisms are each selectively engageable to interconnect the fourth planetary gear set with the stationary member or the input member, and wherein the torque transmitting mechanisms are selectively engageable in combinations of at least two to establish at least nine forward speed ratios and at least one reverse speed ratio between the input member and the output member and the second planetary gear set includes a first and a second set of pinion gears. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 26)
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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 wherein the input member is continuously interconnected to the first member of the first planetary gear set and the output member is continuously interconnected with the second member of the third and fourth planetary gear sets; a first interconnecting member continuously interconnecting one of the members of the first planetary gear set with one of the members of the second planetary gear set; a second interconnecting member continuously interconnecting another one of the members of the first planetary gear set with another one of the members of the second planetary gear set; a third interconnecting member continuously interconnecting the second member of the third planetary gear set with the second member of the fourth planetary gear set; a fourth interconnecting member continuously interconnecting the third member of the third planetary gear set with the first member of the fourth planetary gear set; a fifth interconnecting member continuously interconnecting at least one member of the first and second planetary gear sets with the first member of the third planetary gear set; and six torque transmitting mechanisms, wherein three of the six torque transmitting mechanisms are each selectively engageable to interconnect the second planetary gear set to a stationary member and three of the six torque transmitting mechanisms are each selectively engageable to interconnect the fourth planetary gear set with the stationary member or the input member, and wherein the torque transmitting mechanisms are selectively engageable in combinations of at least two to establish at least nine forward speed ratios and at least one reverse speed ratio between the input member and the output member and the second planetary gear set includes a first and a second set of pinion gears. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification