公开(公告)号：US20200346649A1

公开(公告)日：2020-11-05

申请号：US16898580

申请日：2020-06-11

Applicant: Cummins Inc.

Inventor： Oruganti Prashanth Sharma ,  Kenneth M. Follen ,  Tejas Shrifant Kinjawadekar ,  Vivek Anand Sujan ,  Daniel Reed Dempsey ,  Apurva Chunodkar ,  Nathanael G. Long ,  Jairo Andres Sandoval Leon

IPC: B60W30/18 ,  B60W10/06 ,  B60W50/00 ,  B60W10/02 ,  B60W50/06

Abstract: A system, method, and apparatus include a controller structured to predict a change in speed of a vehicle in advance of upcoming terrain and inhibit a coasting event if the speed exceeds a limit. In one form a velocity of the vehicle is predicted using a physics based model of the vehicle within a look ahead window in front of a vehicle. Such a look ahead window can be distance or time based. In another, speed of a vehicle is monitored during a coasting event and is compared against a threshold to determine whether to remain coasting or re-engage an engine to a driveline. The threshold is a function of road grade, and permits a larger deviation from set speed at low grade than at high grade. The function can be based on road grade and vehicle weight.