Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Scott H. Wittkopp0
Clinton E. Carey0
James M. Hart0
Madhusudan Raghavan0
Andrew W. Phillips0
Date of Patent
October 12, 2010
0Patent Application Number
118768080
Date Filed
October 23, 2007
0Patent Primary Examiner
Patent 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 four planetary gear sets having five torque-transmitting mechanisms, two fixed interconnections and a grounded member. 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 five torque-transmitting mechanisms provide interconnections between various gear members and are operated in combinations to establish eight forward speed ratios and one reverse speed ratio.
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