Control system for electric vehicle
AssigneeToyota Jidosha Kabushiki Kaisha
InventorRyohei YUASA
Life of this patent
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Abstract
A control system for an electric vehicle configured to allow a driver to enjoy behaviors of conventional vehicles having an engine and a transmission more realistically, without impairing comfort and quietness of the electric vehicle. In a virtual AT mode, a target torque value of a motor with respect to a motor speed is changed stepwise in accordance with an operating range shifted automatically, and a simulated engine sound is emitted. The emission of the simulated engine sound is continued until the virtual AT mode is cancelled and a shift lever is moved to a drive position.
Claims18
A control system for an electric vehicle that controls a motor serving as a prime mover based on a target torque value set in accordance with a required drive force, comprising:
- a first sound source that emits an operating sound of the motor;
- a second sound source that emits a simulated operating sound created in accordance with a travelling condition of the electric vehicle;
- a controller that controls the electric vehicle;
- and
- a selector device that is operated manually by a driver to select an operating mode of the electric vehicle at least from
- a mode corresponding to a drive mode in which the electric vehicle is propelled forward by an output torque of the motor,
- a mode including a reverse mode in which the electric vehicle is reversed, a parking mode in which the electric vehicle is parked, and a neutral mode in which a torque transmission between the motor and a pair of drive wheels is interrupted, and
- a mode in which an automatic shifting operation of a conventional vehicle having an automatic transmission is executed virtually,
- wherein the controller is configured to
- create or emit the operating sound of the motor in a situation where the drive mode is selected, and maintain the creation or emission of the operating sound of the motor in a case that the operating mode is shifted from the drive mode to the reverse mode, the parking mode, or the neutral mode, and
- emit the simulated operating sound in a situation where the mode in which the automatic shifting operation is executed virtually is selected, and maintain the emission of the simulated operating sound in a case that the operating mode is shifted from the mode in which the automatic shifting operation is executed virtually to the reverse mode, the parking mode, or the neutral mode.
Dependencies are inferred from the claim text.