ROLL STABILITY CONTROL USING FOUR-WHEEL DRIVE
First Claim
Patent Images
1. A method of controlling a vehicle with a 4×
- 4 driving system comprising;
determining a potential rollover condition; and
transferring driving torque through electronically-controlled center differential or electronically-controlled transfer case to front wheels to prevent rollover.
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Accused Products
Abstract
A control system (18) and method for controlling an automotive vehicle (10) includes a number of sensors that are used to generate a potential rollover signal. In response to the potential rollover, active differentials (112, 114, 116) may be used alone or in addition to braking to prevent the vehicle from rolling over.
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Citations
35 Claims
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1. A method of controlling a vehicle with a 4×
- 4 driving system comprising;
determining a potential rollover condition; and
transferring driving torque through electronically-controlled center differential or electronically-controlled transfer case to front wheels to prevent rollover. - View Dependent Claims (2, 3, 4, 5, 6)
- 4 driving system comprising;
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7. A method of controlling a vehicle with a 4×
- 4 driving system comprising;
generating a rollover signal in response to a potential rollover;
increasing a torque in a front wheel through a differential in response to the rollover signal; and
braking a rear outside wheel in response to the rollover signal. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
- 4 driving system comprising;
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16. A method of controlling a vehicle having an active differential comprising:
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determining a rollover condition;
in response to the rollover condition, disengaging an inside wheel from an outside wheel with the active differential; and
thereafter, determining a wheel lift condition of an inside wheel. - View Dependent Claims (17, 18, 19)
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20. A method of controlling a vehicle having a first wheel, a second wheel, and an active differential comprising:
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during a potential rollover event or stability control event, determining a slip condition of a first wheel of the vehicle;
reducing torque to the first wheel in response to the slip condition using the active differential; and
increasing torque to the second wheel in response to the slip condition using the active differential. - View Dependent Claims (21, 22, 23, 27, 28)
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24. A method of controlling a vehicle having an active differential comprising:
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determining a rollover condition;
in response to the rollover condition, disengaging an outside front wheel from an inside wheel with the active differential;
applying a braking torque to the outside front wheel; and
applying powertrain torque to the outside rear wheel to counter a deceleration caused by braking the front outside wheel. - View Dependent Claims (25)
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26. A method of controlling a vehicle having an active differential comprising:
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determining a rollover condition; and
in response to the rollover condition, using the active differential distributing torque between the front right wheel, front left wheel, rear left wheel and the rear right wheel to prevent rollover.
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29. A vehicle having a front wheel comprising:
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a differential;
a rollover sensor generating a rollover signal; and
a controller coupled to the rollover sensor and the differential, the controller controlling a differential limiting torque to the front wheels to prevent rollover. - View Dependent Claims (30, 31, 32, 33, 34, 35)
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Specification