公开(公告)号：US20140257656A1

公开(公告)日：2014-09-11

申请号：US13790732

申请日：2013-03-08

Applicant: CATERPILLAR INC.

Inventor： Timothy D. Schwartz ,  James Landes

IPC: F16H61/21

CPC classification number: F16H61/21 ,  B60T7/12 ,  B60T10/00 ,  B60T2201/04 ,  B60T2210/20 ,  Y10T477/69

Abstract: A retarding unit in a vehicle is automatically controlled based on conditions including a current setting of the retarding control, downhill grade, speed, current gear, and impending gear change. With the retarder control set in the high position, when the vehicle is operating at a downhill angle greater than the low angle threshold and less than the high angle threshold, and the pending gear is a large step downshift, automatically setting a retarder level to a low retarder level. When the vehicle is operating on level ground and the pending gear is a large step downshift or the current gear is first or second gear, automatically setting the retarder level to off. When the vehicle is operating on flat ground and the deceleration is above a trigger level, automatically setting the retarder level to a low retarder level.

Abstract translation: 基于减速控制的当前设定，下坡坡度，速度，当前档位和即将到来的档位变化的条件，自动控制车辆中的延迟单元。 当减速器控制设置在高位置时，当车辆以大于低角度阈值并且小于高角度阈值的下坡角度操作时，未完成的档位是大的降档，自动将减速器水平设置为 低延迟器水平。 当车辆在水平地面上工作时，未完成的档位是大幅度降档，或当前档位是第一档或第二档，自动将减速器档位设定为关闭。 当车辆在平坦的地面上运行并且减速度高于触发电平时，自动将减速器电平设置为低延迟器电平。

公开(公告)号：US20140249729A1

公开(公告)日：2014-09-04

申请号：US13782448

申请日：2013-03-01

Applicant: CATERPILLAR INC.

Inventor： Timothy D. Schwartz ,  James Landes ,  David R. Wisley ,  Rodney L. Menold

IPC: B60T7/12

CPC classification number: B60T7/12 ,  B60T7/122

Abstract: A hill brake system in a vehicle uses a controller to determine when a number of conditions, such as being stopped on an incline, are met and then automatically applies a braking force at least equal to a calculated grade load, that is, gravitational force. Using drive train measurements and known drivetrain characteristics, a rimpull force is calculated after release of an operator-controlled brake and the automatically applied braking force is reduced corresponding to the rimpull force generated by the drivetrain. The automatically applied braking force is released when any of several conditions are met including uphill motion of the vehicle or expiration of a timeout timer.

Abstract translation: 车辆中的山形制动系统使用控制器来确定何时满足许多条件（诸如在斜坡上停止）的情况，然后自动施加至少等于计算的等级负载即重力的制动力。 使用传动系测量和已知的传动系特性，在释放操作者控制的制动器之后计算轮辋力，并且根据由动力传动系产生的轮辋力来自动施加制动力。 当满足几个条件中的任何一个时，释放自动施加的制动力，包括车辆的上坡运动或超时定时器的到期。