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US Patent 7806802 Preventing rollback of a hybrid electric vehicle

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Patent abstractTimelineTable: Further ResourcesReferences
Is a
Patent
Patent
1

Patent attributes

Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
1
Patent Number
78068021
Patent Inventor Names
Ihab S. Soliman1
Andrew J. Silveri1
Date of Patent
October 5, 2010
1
Patent Application Number
118460961
Date Filed
August 28, 2007
1
Patent Primary Examiner
‌
Sherry L Estremsky
1
Patent abstract

In a vehicle powertrain that includes an engine and an electric machine, a method for preventing rollback of a wheeled vehicle located on an incline includes determining a magnitude of wheel torque required to prevent the vehicle from rolling back, using the electric machine to produce the required magnitude of wheel torque at the wheels, transmitting engine torque to the wheels, and reducing torque produced by the electric machine while increasing engine torque such that the sum of wheel torque produced by the engine and electric machine is substantially equal to said required magnitude of wheel torque.

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