| 摘要 |
A traction enhancement system includes an electronic controller, first and second pneumatic tire and wheel assemblies, a first wheel brake, a second wheel brake, a source of pressurized air, an air pressure sensor, and a vehicle speed sensor. The first and second pneumatic tire and wheel assemblies each define a pneumatic chamber having pressurized air therein. The first wheel brake operably resists rotation of the first tire and wheel assembly. The second wheel brake likewise operably resists rotation of the second tire and wheel assembly. The source of pressurized air is connected to the tire and wheel assemblies. The air pressure sensor is located and configured to monitor the pressure of the pneumatic chambers, and is electrically connected to the controller. The vehicle speed sensor is electrically connected to the controller as well. The electronic controller includes structure for selectively controlling the pressure within the pneumatic chambers responsive to signals from the vehicle speed sensor and from the air pressure sensor and structure for selectively applying the first and second wheel brakes, and structure for determining the slippage of a given wheel. When one of the first and the second tire and wheel assemblies slips at a vehicle speed less than a predetermined first threshold speed, the pressure in the slipping tire and wheel assembly is decreased to improve traction.
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