Method and system of preventing automatic transmission vehicle from rolling downward on hill
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorJin Han
Life of this patent
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Abstract
A method of preventing an automatic transmission vehicle from rolling downward on a hill is provided. The method includes determining whether the vehicle travels normally or abnormally on the hill based on a gradient measured by a G sensor and a direction of a wheel measured by a wheel sensor. A controller is maintained in an off state when the vehicle travels normally based on driver intention. The method further includes determining whether to operate the controller by determining a difference in wheel speed between a front wheel and a rear wheel of the vehicle when the vehicle travels abnormally as the vehicle rolls downward.
Claims10
A method of preventing an automatic transmission vehicle from rolling downward on a hill, which operates a controller for preventing the vehicle from rolling downward by using a G sensor and a wheel sensor mounted within the vehicle, the method comprising:
- determining whether the vehicle travels normally or abnormally on the hill based on a gradient measured by the G sensor and a direction of a wheel measured by the wheel sensor;
- maintaining the controller in an off state when the vehicle travels normally based on a driver intention;
- and
- determining whether to operate the controller by determining a difference in wheel speed between a front wheel and a rear wheel of the vehicle when the vehicle travels abnormally as the vehicle rolls downward.
A system of preventing an automatic transmission vehicle from rolling downward on a hill, comprising:
- a G sensor configured to determine whether the vehicle is on an uphill road or a downhill road;
- a wheel sensor configured to determine a wheel direction or a front wheel or a rear wheel of the vehicle;
- and
- a controller configured to operate based on determining a difference in wheel speed between the front wheel and the rear wheel of the vehicle when the vehicle travels abnormally as the vehicle rolls downward.
Dependencies are inferred from the claim text.