公开(公告)号：US5839801A

公开(公告)日：1998-11-24

申请号：US833156

申请日：1997-04-04

申请人： Steven C. Ferguson

发明人： Steven C. Ferguson

IPC分类号： B60C23/00 ,  B60T8/32 ,  B60T8/48 ,  B60T8/56 ,  B60T8/88

CPC分类号： B60T8/3205 ,  B60C23/003 ,  B60T8/4809 ,  B60T8/56 ,  Y10S303/07

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.

摘要翻译： 牵引增强系统包括电子控制器，第一和第二充气轮胎和车轮组件，第一车轮制动器，第二车轮制动器，加压空气源，气压传感器和车速传感器。 第一和第二充气轮胎和车轮组件均限定在其中具有加压空气的气动室。 第一车轮制动器可操作地抵抗第一轮胎和车轮组件的旋转。 第二轮制动器同样可操作地抵抗第二轮胎和轮组件的旋转。 加压空气源连接到轮胎和轮组件。 空气压力传感器被定位和配置为监测气动室的压力，并且电连接到控制器。 车速传感器也与控制器电连接。 电子控制器包括响应于来自车速传感器和来自空气压力传感器和结构的用于选择性地施加第一和第二轮子制动器的信号来选择性地控制气动室内的压力的结构，以及用于确定给定车轮的滑动的结构 。 当第一和第二轮胎和车轮组件中的一个以小于预定的第一阈值速度的车辆速度滑动时，滑动轮胎和车轮组件中的压力降低以改善牵引力。

公开(公告)号：US06241326B1

公开(公告)日：2001-06-05

申请号：US09426444

申请日：1999-10-25

申请人： Steven C. Ferguson ,  Darren G. Graczyk

发明人： Steven C. Ferguson ,  Darren G. Graczyk

IPC分类号： B60T874

CPC分类号： B60T8/268 ,  B60T8/1766

摘要： The control algorithm for a rear wheel anti-lock brake system includes a subroutine which proportions the applied braking force between front and rear wheel brakes of a vehicle during a braking cycle. The speed of the rear wheels is sensed and used to calculate an estimated vehicle deceleraion. Upon the estimated vehicle deceleration exceeding a deceleration threshold, an isolation valve is closed to hold the brake pressure applied to the vehicle rear brakes constant. Upon further increases of the estimated vehicle deceleration, the isolation valve is selectively opened to increase the rear brake pressure in proportion to the front brake pressure.

摘要翻译： 用于后轮防抱死制动系统的控制算法包括在制动循环期间比例车辆的前后轮制动之间施加的制动力的子程序。 感测后轮的速度并用于计算估计的车辆减速。 当估计车辆减速度超过减速阈值时，隔离阀关闭以保持施加到车辆后制动器的制动压力恒定。 在进一步增加估计的车辆减速度时，选择性地打开隔离阀以增加与前制动压力成比例的后制动压力。