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US 12,528,363 B2Granted
Control apparatus for vehicle, control system for vehicle, and control method for vehicle
AssigneeHitachi Astemo, Ltd.
InventorsSatoshi Kaneko, Keisuke Suzuki, Kazuya Takahashi
Life of this patent
Estimating the term…
Abstract
A control apparatus for a vehicle includes an addition portion that outputs a post-compensation driver request torque, which is acquired by adding a driving torque (a loss compensation driving torque) lost due to a braking torque provided to a wheel on a low-μ road surface side according to a BLSD request hydraulic pressure calculated by a BLSD request hydraulic pressure calculation processing portion to a driver request torque calculated by a driver request torque calculation processing portion, to a motor.
Claims14
A system for a vehicle, comprising:
- an accelerator;
- a first driving wheel;
- a second driving wheel;
- a driving axle connecting the first driving wheel and the second driving wheel;
- a driving source configured to provide a driving torque to the driving axle;
- a brake apparatus configured to provide braking torques to the first driving wheel and the second driving wheel individually;
- and
- a vehicle control apparatus operatively connected to the driving source and to the brake apparatus, and configured to:
- (a) calculate a driver request torque based on an operation amount of the accelerator and a vehicle speed;
- (b) when the vehicle is on a split road surface, the split road surface being a road surface on which a frictional coefficient of a road surface where the first driving wheel contacts a ground is lower than a frictional coefficient of a road surface where the second driving wheel contacts the ground:
- calculate a BLSD request hydraulic pressure to provide to the first driving wheel,
- calculate a braking torque corresponding to the BLSD request hydraulic pressure,
- calculate a loss compensation driving torque resulting from the BLSD request hydraulic pressure,
- double the loss compensation driving torque,
- calculate a post-compensation driver request torque by adding the doubled loss compensation driving torque to the driver request torque, and
- apply the post-compensation driver request torque to the driving source.
13 more elements
A method for controlling a vehicle, comprising:
- providing a vehicle having an accelerator, a first driving wheel, a second driving wheel, a driving axle connecting the first driving wheel and the second driving wheel, a driving source configured to provide a driving torque to the driving axle, and a brake apparatus configured to provide braking torques to the first driving wheel and the second driving wheel individually;
- providing a vehicle control apparatus operatively connected to the driving source and the brake apparatus;
- calculating, by the vehicle control apparatus, a driver request torque based on an operation amount of the accelerator and a vehicle speed;
- when the vehicle is on a split road surface, the split road surface being a road surface on which a frictional coefficient of a road surface where the first driving wheel contacts a ground is lower than a frictional coefficient of a road surface where the second driving wheel contacts the ground:
- calculating a BLSD request hydraulic pressure to provide to the first driving wheel,
- calculating a braking torque corresponding to the BLSD request hydraulic pressure,
- calculating a loss compensation driving torque based on the braking torque,
- doubling the loss compensation driving torque,
- calculating a post-compensation driver request torque by adding the doubled loss compensation driving torque to the driver request torque, and
- applying the post-compensation driver request torque to the driving source.
7 more elements
Dependencies are inferred from the claim text.