TEN-SPEED TRANSMISSION
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United States of America Patent
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-
Aug 10, 2010
Grant Date -
Aug 19, 2010
app pub date -
Feb 16, 2009
filing date -
Feb 16, 2009
priority date (Note) -
Granted
status (Latency Note)
Importance
Abstract
The transmission has a plurality of members that can be utilized in powertrains to provide at least ten forward speed ratios and one reverse speed ratio. The transmission includes four planetary gear sets, six torque-transmitting devices, and two fixed interconnections. The powertrain includes an engine and torque converter that is continuously connected to one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. The six torque-transmitting devices provide interconnections between various gear members, the transmission housing and each other, and are operated in combinations of three to establish at least ten forward speed ratios and one reverse speed ratio.
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