The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 2020
Filed:
Apr. 18, 2019
Toyota Motor Engineering & Manufacturing North America, Inc., Plano, TX (US);
Luke Alan Rippelmeyer, Plano, TX (US);
Christopher M. Bulpitt, Los Angeles, CA (US);
Ronald J. Toth, Redondo Beach, CA (US);
TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC., Plano, TX (US);
Abstract
A control apparatus and method for a two motor drive system of an electric vehicle A spline connects the two Motors, and a second spline connects a motor to a transmission. The control apparatus is configured to in positive driving traction, initiate torque change of the first motor and delay torque change of the second motor, in negative driving traction, initiate torque change of the second motor and delay torque change of the first motor, in downshift of the transmission, initiate torque change of the first motor and delay torque change of the second motor, and in upshift of the transmission, initiate torque change of the second motor and delay torque change of the first motor. The control of torque and the initiation sequence of torque change between the two motors is such that impacts from backlash are substantially reduced, and vibration and noise phenomena are minimal.