Abstract: An electric powertrain includes a first electric motor that has an uninterrupted connection with a drive shaft of a vehicle. The electric powertrain further includes a first gear train that has an interruptible connection with the drive shaft. In one form, this interruptible connection includes a second carrier and a clutch engagement member. The electric powertrain further includes a sun gear in the form of a ring gear and planet gears in the form of a first output shaft. To provide a compact configuration, the first electric motor and the first gear train are sandwiched between the sun gear and the planet gears.
Type:
Application
Filed:
June 1, 2020
Publication date:
December 2, 2021
Applicant:
Allison Transmisson, Inc.
Inventors:
Arthur L. McGrew, JR., Isaac Mock, George S. Pelton, James Allen Raszkowski
Abstract: A transmission includes an electro-hydraulic controller that includes redundancy in the hydraulic circuit that permits single fault failures to be compensated for by changing the flow path of hydraulic fluid to bypass the single fault failure. The redundancy results in the ability of the transmission to maintain full operation in all modes.
Type:
Grant
Filed:
March 14, 2013
Date of Patent:
July 26, 2016
Assignee:
Allison Transmisson, Inc.
Inventors:
Charles F. Long, Darren J. Weber, John William Edward Fuller, Stephen Murray