US 11,993,250 B2
Drive force control system for vehicle
Tatsuya Imamura, Okazaki (JP); Yoichiro Isami, Mishima (JP); Yoshio Itou, Susono (JP); Hiroyuki Amano, Susono (JP); Akiko Nishimine, Susono (JP); Hiroaki Ebuchi, Hadano (JP); and Hiroaki Kodera, Susono (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Jul. 9, 2021, as Appl. No. 17/371,194.
Claims priority of application No. 2020-134342 (JP), filed on Aug. 7, 2020.
Prior Publication US 2022/0041157 A1, Feb. 10, 2022
Int. Cl. B60W 20/30 (2016.01); B60W 10/06 (2006.01); B60W 10/08 (2006.01); B60W 10/111 (2012.01); B60W 20/15 (2016.01)
CPC B60W 20/30 (2013.01) [B60W 10/06 (2013.01); B60W 10/08 (2013.01); B60W 10/111 (2013.01); B60W 20/15 (2016.01); B60W 2540/10 (2013.01); B60W 2540/14 (2013.01); B60W 2710/083 (2013.01); B60W 2710/105 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A drive force control system for a vehicle that controls a drive force to propel the vehicle in which a first powertrain includes a motor as a prime mover and a power transmission device that transmits an output torque of the motor to a pair of drive wheels to imitate behaviors of a model vehicle in which a second powertrain includes an engine as a prime mover and a transmission that transmits an output torque of the engine to a pair of drive wheels, the drive force control system comprising:
a controller that controls the output torque of the motor,
wherein the controller comprises:
a drive torque simulator that models the behaviors of the model vehicle and is configured to compute a virtual drive torque corresponding to what would be delivered to the drive wheels of the model vehicle in response to a manual operation of a driver to manipulate the vehicle, based on at least one of torque changing factors including a second inertia moment, a second elastic coefficient, and/or a second attenuation coefficient of the second powertrain of the model vehicle; and
an actual torque calculator configured to compute a target torque of the motor that is practically delivered from the motor to the drive wheels in the vehicle based on the virtual drive torque computed by the drive torque simulator, taking account of at least one of torque changing factors including a first inertia moment, a first elastic coefficient, and a first attenuation coefficient of the first powertrain of the vehicle.