TEN-SPEED TRANSMISSION WITH START AND STOP ENABLER

摘要

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. An transmission auto start/stop enabler includes one or multiple latches. The latches engage one or more of the plurality of torque transmitting devices during an engine auto stop/start event or in preparation for a stop of the motor vehicle.

主权项

1. A transmission in a motor vehicle, the transmission comprising:
an input member; an output member; first, second, third and fourth planetary gear sets each having first, second and third members; six torque transmitting mechanisms selectively engageable to interconnect one of the first, second, and third members with at least one other of the first members, second members, third members and a stationary member, wherein the torque transmitting mechanisms are selectively engageable in combinations of at least three to establish at least ten forward speed ratios and at least one reverse speed ratio between the input member and the output member; and a first latching mechanism connected to a fifth of the six torque transmitting mechanisms, wherein the first latching mechanism latches the fifth torque transmitting mechanism in a ready state; and a second latching mechanism connected to a sixth of the six torque transmitting mechanisms, wherein the second latching mechanism latches the sixth torque transmitting mechanism in the ready state, and wherein the fifth and sixth torque transmitting mechanisms are in the ready state during a first forward gear or a second forward gear.