公开(公告)号：US20180258830A1

公开(公告)日：2018-09-13

申请号：US15454902

申请日：2017-03-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： William SAINDON ,  Michele BILANCIA

IPC: F01P3/20 ,  F01P5/10 ,  F01P7/14 ,  F01P3/18

CPC classification number: F01P3/02 ,  F01P7/165 ,  F01P2003/027 ,  F01P2005/105 ,  F01P2005/125 ,  F01P2007/146 ,  F01P2025/31 ,  F01P2025/32 ,  F01P2025/33 ,  F01P2025/36 ,  F01P2025/50 ,  F01P2025/52 ,  F01P2060/04 ,  F01P2060/045 ,  F01P2060/08 ,  F01P2060/12 ,  F01P2060/16 ,  F01P2060/18 ,  F02M26/02

Abstract: A cooling system selectively cools an engine and an exhaust gas recirculation (EGR) component of the engine. The cooling system includes a plumbing system with a plurality of flow branches, including an engine branch, an EGR branch, and a feed branch. The engine branch defines an engine flow passage through which the coolant flows to cool the engine. The EGR branch defines an EGR flow passage through which the coolant flows to cool the EGR component. The feed branch defines a feed flow passage. The cooling system has a first operating configuration in which the EGR flow passage is configured to receive coolant flow from the engine flow passage. The cooling system has a second operating configuration in which the EGR flow passage is configured to receive coolant flow from the feed flow passage instead of the engine flow passage.