公开(公告)号：EP3812569A1

公开(公告)日：2021-04-28

申请号：EP20198722.9

申请日：2020-09-28

申请人： Deere & Company

发明人： URBANEK, Justin J. ,  FRITZ, Justin E. ,  KELLER, Patrick ,  HUNOLD, Brent M.

IPC分类号： F02D41/08 ,  F02D41/02 ,  F02D29/02 ,  F02D41/16

摘要： A work vehicle may include an internal combustion engine, aftertreatment system, and at least one controller. The controller is configured to use a temperature of the aftertreatment system to determine a hydrocarbon level of the aftertreatment system, and set an idle speed of the engine to high idle if the hydrocarbon level is above a hydrocarbon ceiling, to ultra-low idle if the hydrocarbon level is below a hydrocarbon floor, and to low idle if the hydrocarbon level is between the hydrocarbon floor and the hydrocarbon ceiling.