Control system for electric vehicle
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsKentaroh Kanzaki, Yasunori Matsumoto, Yoichiro Isami, Yuta Tsukada, Hiroyuki Amano
Life of this patent
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Abstract
A control system for an electric vehicle configured to simulate an engine stall which might occur in conventional vehicles while preventing the simulation of the engine stall in an unfavorable situation. A controller of the control system is configured to: execute an engine stall control to simulate a behavior of the conventional vehicle in a situation where an engine stall occurs by stopping a motor, when a virtual engine speed calculated by a virtual engine speed calculator falls below a predetermined speed; and execute a hold assist control to apply a brake torque to the wheel by the brake device upon execution of the engine stall control.
Claims11
A control system for an electric vehicle having a rotary machine that delivers a torque to a wheel and a brake device that applies a brake torque to the wheel, but without having an engine, a transmission connected to the engine, and a clutch device, comprising:
- an operating device of an accelerator that is manipulated by a driver to accelerate and decelerate the electric vehicle;
- an operating device of a shifting device that is manipulated by the driver to imitate an operation of a manual transmission of a conventional vehicle having the manual transmission;
- a virtual torque transmitting capacity changing device that is manipulated to imitate an operation of a clutch of the conventional vehicle;
- and
- a controller that controls the brake device,
- wherein the controller comprises a virtual engine speed calculator that calculates a virtual engine speed as a speed of an engine of the conventional vehicle in an actual running condition of the electric vehicle based on positions of the operating device of the accelerator and the virtual torque transmitting capacity changing device, and
- the controller is configured to
- execute an engine stall control to simulate a behavior of the conventional vehicle in a situation where an engine stall occurs by stopping a rotation and a torque generation of the rotary machine, when the virtual engine speed calculated by the virtual engine speed calculator falls below a predetermined speed, and
- execute a hold assist control to apply the brake torque to the wheel by the brake device upon execution of the engine stall control.
Dependencies are inferred from the claim text.