US 12,304,323 B1
Predictive torque split for engine torque determination in multi-motor electrically all-wheel drive vehicles
Sezai Osman Oder, South Lyon, MI (US); Christoph Tischendorf, West Bloomfield, MI (US); Mckenzie Walsh, Auburn Hills, MI (US); Rama Rohit Varma Sagi, St. Joseph, MI (US); Ashay Sharma, Troy, MI (US); and Nadirsh Patel, Farmington Hills, MI (US)
Assigned to FCA US LLC, Auburn Hills, MI (US)
Filed by FCA US LLC, Auburn Hills, MI (US)
Filed on Jan. 30, 2024, as Appl. No. 18/426,688.
Int. Cl. B60K 1/02 (2006.01); B60K 17/35 (2006.01); B60K 23/08 (2006.01); B60L 15/20 (2006.01); B60L 15/36 (2006.01); B60K 26/02 (2006.01)
CPC B60L 15/2054 (2013.01) [B60K 1/02 (2013.01); B60K 17/35 (2013.01); B60K 23/0808 (2013.01); B60L 15/36 (2013.01); B60K 2026/025 (2013.01); B60L 2200/36 (2013.01); B60L 2260/28 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A torque control system for a multi-motor range-extended electrified vehicle (REEV) having an electric all-wheel drive (eAWD) system, the torque control system comprising:
an input device configured to obtain an unfiltered driver demand indicative of a torque request to be satisfied by an electrified powertrain of the REEV, wherein the electrified powertrain includes at least one electric motor associated with each of front and rear axles of the REEV and an engine and a generator configured to provide electrical energy to a battery system that powers the electric motors; and
a control system configured to:
utilize the unfiltered driver demand for engine torque determination and for predicting a front and rear axle torque split;
obtain a filtered driver demand that is damped or delayed compared to the unfiltered driver demand; and
utilize the filtered driver demand for controlling the front and rear axle torque split by actuating the electric motors,
wherein an engine torque delay is mitigated or eliminated thereby increasing the electrical energy to the battery system for increased availability in actuating the electric motors to control the front and rear axle torque split.