公开(公告)号：US11913401B1

公开(公告)日：2024-02-27

申请号：US18309984

申请日：2023-05-01

申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

发明人： Chengke Liu ,  Vijay A Ramappan ,  Rafat F Hattar ,  Jeffrey M Kaiser ,  Joseph Shelton

IPC分类号： F02D9/04 ,  F02D41/04 ,  F02D41/12 ,  F02D41/06 ,  F01N3/20

CPC分类号： F02D9/04 ,  F01N3/20 ,  F02D41/042 ,  F02D41/064 ,  F02D41/123 ,  F01N2430/10 ,  F02D2200/0802

摘要： An engine consumes fuel and air to generate an exhaust gas stream. An exhaust system channels the exhaust gas stream from the engine to a tailpipe. An aftertreatment system is included in the exhaust system and includes a catalyst. An exhaust throttle valve is disposed in the exhaust system downstream from the aftertreatment system. An actuator controls an amount of air pumped through the engine. A controller operates the exhaust throttle valve and/or the actuator to control emissions from the exhaust system during a cold start and following a deceleration fuel cutoff event.