US 11,654,779 B2
Virtual manual transmission system for electric vehicle
Yoichiro Isami, Mishima (JP); Hiroyuki Amano, Susono (JP); Takayuki Oshima, Susono (JP); Makoto Takano, Sunto-gun (JP); Yuta Tsukada, Sunto-gun (JP); Kiyosuke Hayamizu, Susono (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. 11, 2022, as Appl. No. 17/861,434.
Claims priority of application No. JP2021-128166 (JP), filed on Aug. 4, 2021.
Prior Publication US 2023/0039347 A1, Feb. 9, 2023
Int. Cl. B60L 15/20 (2006.01); B60L 3/00 (2019.01); B60L 3/04 (2006.01); B60W 30/182 (2020.01); F16H 59/02 (2006.01); F16H 61/02 (2006.01)
CPC B60L 15/20 (2013.01) [B60L 3/0046 (2013.01); B60L 3/0061 (2013.01); B60W 30/182 (2013.01); F16H 59/02 (2013.01); F16H 61/0213 (2013.01); B60L 2240/421 (2013.01); B60L 2240/486 (2013.01); F16H 2059/0221 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A virtual manual transmission system for an electric vehicle, comprising:
an electric motor that serves as a prime mover;
an accelerator device that is operated by a driver to control an output torque of the electric motor;
an electric storage device that is connected to the electric motor, wherein at least one of a change rate of the output torque of the electric motor and an input/output power to/from the electric storage device may be regulated;
a clutch device that is operated by the driver to transmit a torque between the electric motor and a pair of drive wheels, and to interrupt torque transmission between the electric motor and the drive wheels;
a shifting device that is operated by the driver to select a mode determining a relation between the output torque of the electric motor and a driving torque delivered to the drive wheels; and
a controller that controls the output torque of the electric motor, wherein the controller is configured to:
change the output torque of the electric motor based on a detection signal representing an execution of a virtual manual shifting including an operation of the clutch device to allow or interrupt torque transmission between the electric motor and the drive wheels, an operation of the accelerator device to change the output torque of the electric motor executed in connection with the operation of the clutch device, and an operation of the shifting device to select the mode;
change an upper limit value of the at least one of the change rate of the output torque of the electric motor and the input/output power to/from the electric storage device, so as to reduce a regulation on the change rate of the output torque of the electric motor or the input/output power to/from the electric storage device; and
reduce the regulation for a predetermined period of time after completion of the operation of the clutch device to interrupt torque transmission between the electric motor and the drive wheels, or to allow torque transmission between the electric motor and the drive wheels.