8-speed transmission with two fixed interconnections
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United States of America Patent
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Oct 12, 2010
Issued Date -
N/A
app pub date -
Oct 11, 2007
filing date -
Mar 30, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
The transmission has a plurality of members that can be utilized in powertrains to provide eight forward speed ratios and one reverse speed ratio. The transmission includes three planetary gear sets having six torque-transmitting devices and two fixed interconnections. The powertrain includes an engine and torque converter that is continuously connected to at least 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, and with the transmission housing, and are operated in combinations of three to establish eight forward speed ratios and one reverse speed ratio.
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