Motor torque control system for vehicle
AssigneeNissan Motor Co., Ltd.
InventorMunetoshi Ueno
Life of this patent
Estimating the term…
Abstract
A motor torque control system for a vehicle equipped with a drive torque generating motor is comprised of a vehicle speed detector, an accelerator opening detector, a brake depression detector and a control unit. The control unit rapidly brings a motor torque to zero when a vehicle speed is lower than a predetermined speed, when an accelerator opening is substantially zero, and when a brake depression quantity is increasing, and generates the motor torque according to the brake depression quantity when the brake depression quantity is deceasing.
Claims10
A motor torque control system for a vehicle equipped with a motor, comprising:
- a vehicle speed sensor that detects a vehicle speed;
- an accelerator opening detector that detects an opening of an accelerator of the vehicle;
- a brake depression detector that detects a brake manipulated quantity indicative of a depression state of a brake of the vehicle;
- and
- a control unit coupled to the vehicle speed sensor, the accelerator opening detector, and the brake depression detector, the control unit being arranged to bring a motor torque of the motor to zero when the vehicle speed is lower than a predetermined speed, when the accelerator opening is substantially zero, and when the brake depression state is set at a braking increasing state of increasing a braking force of the vehicle, and to generate the motor torque according to the brake manipulated quantity when the brake depression state is set at a braking decreasing state of decreasing a braking force of the vehicle.
A method of controlling a motor torque of a motor for driving a vehicle, comprising:
- detecting a vehicle speed;
- detecting an opening of an accelerator of the vehicle;
- detecting a brake manipulated quantity of a brake of the vehicle;
- bringing the motor torque to zero when the vehicle speed is lower than a predetermined speed, when the accelerator opening is substantially zero, and when the brake manipulated quantity is increasing;
- and
- generating the motor torque according to the brake manipulated quantity when the brake manipulated quantity is decreasing.
A motor torque control system for a vehicle, comprising:
- a motor that generates a motor torque for driving the vehicle;
- a vehicle speed sensor that detects a vehicle speed;
- an accelerator opening detector that detects an accelerator opening of an accelerator of the vehicle;
- a brake depression detector that detects a brake manipulated quantity of a brake of the vehicle;
- and
- a control unit coupled to the motor, the vehicle speed sensor, the accelerator opening detector, and the brake depression detector, the control unit being arranged to bring the motor torque to zero when first, second and third conditions are satisfied wherein the first condition is that the vehicle speed is lower than a predetermined speed, the second condition is that the accelerator opening is substantially zero, and the third condition is that the brake manipulated quantity is increasing, and to generate the motor torque according to the brake manipulated quantity when the brake manipulated quantity is deceasing.
A motor torque control system for a vehicle equipped with a motor, comprising:
- vehicle speed detecting means for detecting a vehicle speed;
- accelerator opening detecting means for detecting an opening of an accelerator of the vehicle;
- brake depression detecting means for detecting a brake manipulated quantity indicative of a depression state of a brake of the vehicle;
- first controlling means for bringing a motor torque of the motor to zero when the vehicle speed is lower than a predetermined speed, when the accelerator opening is substantially zero, and when the brake depression state is set at a braking increasing state of increasing a braking force of the vehicle;
- and
- second controlling means for generating the motor torque according to the brake manipulated quantity when the brake depression state is set at a braking decreasing state of decreasing a braking force of the vehicle.
Dependencies are inferred from the claim text.