US 12,454,269 B2
Control device of hybrid electric vehicle for implementing vibration damping for the vehicle body using electric motors
Keita Obara, Nisshin (JP); Yoshihiro Furuya, Toyota (JP); and Hideyuki Handa, Okazaki (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Apr. 19, 2023, as Appl. No. 18/136,555.
Claims priority of application No. 2022-105891 (JP), filed on Jun. 30, 2022.
Prior Publication US 2024/0001929 A1, Jan. 4, 2024
Int. Cl. B60L 9/00 (2019.01); B60W 10/06 (2006.01); B60W 10/08 (2006.01); B60W 20/00 (2016.01); B60W 30/192 (2012.01); B60W 30/20 (2006.01)
CPC B60W 30/20 (2013.01) [B60W 10/06 (2013.01); B60W 10/08 (2013.01); B60W 20/00 (2013.01); B60W 30/192 (2013.01); B60W 2510/0638 (2013.01); B60W 2510/0657 (2013.01); B60W 2510/0685 (2013.01); B60W 2510/244 (2013.01); B60W 2510/246 (2013.01); B60W 2540/10 (2013.01); B60W 2710/083 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A control device that controls a hybrid electric vehicle including an engine including a plurality of cylinders,
a first rotary electric machine, a second rotary electric machine, a power split mechanism, and
an in-vehicle battery electrically connected to the first rotary electric machine and the second rotary electric machine,
the hybrid electric vehicle being a vehicle in which the engine and the first rotary electric machine are drivingly connected to a drive shaft of wheels via the power split mechanism, and the second rotary electric machine is connected to the drive shaft of the wheels without the power split mechanism, the control device being configured to execute:
a combustion stop process of continuing combustion of remaining cylinders in a state in which combustion of a part of the plurality of cylinders is stopped;
a first vibration damping process of generating, in the first rotary electric machine, a vibration damping torque for suppressing vehicle body vibration associated with an execution of the combustion stop process;
a second vibration damping process of generating, in the second rotary electric machine, the vibration damping torque for suppressing the vehicle body vibration associated with the execution of the combustion stop process; and
an adjusting process of adjusting an amplitude of the vibration damping torque generated in the second vibration damping process to an increasing side when an engine rotational speed is high, and adjusting an amplitude of the vibration damping torque generated in the first vibration damping process to an increasing side when the engine rotational speed is low, wherein
the first vibration damping process is a process of generating the vibration damping torque such that a torque of the first rotary electric machine decreases at the same cycle as a cycle of a torque decrease of the engine due to a combustion stop of the part of the cylinders, and
the adjusting process causes the amplitude of the vibration damping torque generated in the first vibration damping process to be smaller when a charging rate of the in-vehicle battery is high than when the charging rate is low.