公开(公告)号：EP2504210A2

公开(公告)日：2012-10-03

申请号：EP10831948.4

申请日：2010-10-07

申请人： Caterpillar, Inc.

发明人： CHAPPELL, Jonathan, D. ,  BELL, Jason, D. ,  GRAHAM, Paul ,  ADAMS, Richard ,  HARVEY, Keith, F. ,  THOMPSON, Stephen ,  DORNBERGER, James, V.

IPC分类号： B60W10/04 ,  B60K31/00 ,  B60W10/10 ,  B60W40/06

CPC分类号： B60W10/11 ,  B60W10/06 ,  B60W10/196 ,  B60W30/18009 ,  B60W30/18072 ,  B60W2510/0638 ,  B60W2540/10 ,  B60W2540/12 ,  B60W2550/142

摘要： A method for automatically controlling the downhill speed of a machine. The method includes establishing a target machine speed based on a current machine speed and determining whether at least one trigger condition including a grade greater than a predetermined threshold has been satisfied. If satisfied, the method activates a control system to control at least one of a powertrain retarder and a change in a transmission gear to prevent exceeding the target machine speed.