System and method for integrating a torque vectoring differential with a stability control system
First Claim
1. A motor vehicle comprising:
- a first wheel including a first brake;
a second wheel including a second brake;
a third wheel including a third brake;
a fourth wheel including a fourth brake;
at least one sensor coupled to the controller, wherein the at least one sensor is configured to detect an unstable condition and provide a first notification to the controller of the unstable condition;
a first system coupled to the first wheel and the second wheel, the first system configured to rotate the first wheel and the second wheel at different rates and to provide a second notification when the first system is no longer able to rotate the first wheel and the second wheel at different rates;
a second system coupled to the third brake and the fourth brake, the second system configured to selectively apply at least one of the first brake and the second brake; and
a controller coupled to the first system, the second system, and the at least one sensor, the controller configured to receive the first notification and second notification, and operable, in response thereto, to;
instruct the first system to rotate the first wheel and the second wheel at different rates in response to the first notification; and
instruct the second system to selectively apply at least one of the first brake and the second brake in response to the second notification.
12 Assignments
0 Petitions
Accused Products
Abstract
Methods and apparatus are provided for integrating a torque vectoring differential (TVD) and a stability control system in a motor vehicle. The integrated system is utilized for more efficiently correcting understeer and/or oversteer slides in a motor vehicle. In correcting these slides, the integrated system utilizes the TVD to rotate two wheels on opposite sides of the motor vehicle at different rates to create a yaw moment at the vehicle'"'"'s center of gravity until the TVD reaches a saturation point and the understeer or oversteer slide is not corrected. Once the saturation point is reached without correcting the understeer or oversteer slide, the stability control system is employed to selectively apply one or more of the vehicle'"'"'s brakes in a further effort to correct the understeer or oversteer slide.
17 Citations
18 Claims
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1. A motor vehicle comprising:
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a first wheel including a first brake; a second wheel including a second brake; a third wheel including a third brake; a fourth wheel including a fourth brake; at least one sensor coupled to the controller, wherein the at least one sensor is configured to detect an unstable condition and provide a first notification to the controller of the unstable condition; a first system coupled to the first wheel and the second wheel, the first system configured to rotate the first wheel and the second wheel at different rates and to provide a second notification when the first system is no longer able to rotate the first wheel and the second wheel at different rates; a second system coupled to the third brake and the fourth brake, the second system configured to selectively apply at least one of the first brake and the second brake; and a controller coupled to the first system, the second system, and the at least one sensor, the controller configured to receive the first notification and second notification, and operable, in response thereto, to; instruct the first system to rotate the first wheel and the second wheel at different rates in response to the first notification; and instruct the second system to selectively apply at least one of the first brake and the second brake in response to the second notification. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of correcting a motor vehicle slide comprising the steps of:
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detecting one of a right-turn oversteer, a left-turn oversteer, a right-turn understeer, and a left-turn understeer; utilizing a first system to correct the one of the right-turn oversteer, the left-turn oversteer, the right-turn understeer, and the left-turn understeer provided that the first system is able to correct the one of the right-turn oversteer, the left-turn oversteer, the right-turn understeer, and the left-turn understeer; and utilizing a second system to correct the one of the right-turn oversteer, the left-turn oversteer, the right-turn understeer, and the left-turn understeer if a notification has been received indicating that the first system is unable to correct the one of the right-turn oversteer, the left-turn oversteer, the right-turn understeer, and the left-turn understeer. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A method for correcting a slide of a motor vehicle having a first wheel including a first brake, a second wheel including a second brake, a third wheel including a third brake, and a fourth wheel including a fourth brake, the method comprising the steps of:
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receiving a first notification from a sensor indicating an unstable condition of the vehicle; instructing a first system to rotate the first wheel and the second wheel at different rates in response to the first notification; receiving a second notification that the first system is no longer able to rotate the first wheel and the second wheel at different rates; and instructing the second system to selectively apply at least one of the first brake and the second brake in response to the second notification.
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Specification