Fca US LLC

Alexander J George

Chunjian Wang

Drushan Mavalankar

In at least some implementations, a method of determining rotational inertia of a vehicle wheel is accomplished by applying torque to the wheel and determining a rotational characteristic of the wheel resulting from the applied torque. The method includes the steps of applying torque at a first level to a wheel, determining one or more rotational speeds of the wheel caused by the torque at the first level, applying torque at a second level to the wheel, where the second level is different than the first level, determining one or more rotational speeds of the wheel caused by the torque at the second level, and determining a rotational inertia of the wheel as a function of the one or more rotational speeds of the wheel caused by both the torque at the first level and the torque at the second level.

System for wheel rotational inertia determination

Proprioceptive torque distribution control systems and methods for an electrified vehicle having a multi-motor electrified powertrain including two or more electric motors involve an accelerometer sensor system configured to measure accelerations of the electrified vehicle relative to three perpendicular axes, and a controller configured to determine four relative degrees of contact by four wheels of the electrified vehicle with a ground surface, respectively, based on the measured accelerations and travel of a suspension of the electrified vehicle, and control a distribution of a total amount of drive torque generated by the multi-motor electrified powertrain between the four wheels of the electrified vehicle based on their respective four relative degrees of contact with the ground surface to thereby improve performance and stability of the electrified vehicle.

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Whitmore Lake, MI, United States of America

Alexander J George