公开(公告)号：US20170211522A1

公开(公告)日：2017-07-27

申请号：US15326857

申请日：2015-08-14

Applicant: BorgWarner Inc.

Inventor： DAVID GRABOWSKA ,  RAJMOHAN CHANDRAMOHANAN

IPC: F02M26/70 ,  F02M26/05

CPC classification number: F02M26/70 ,  F01D17/14 ,  F02B29/0406 ,  F02B37/025 ,  F02B37/18 ,  F02B37/183 ,  F02B37/22 ,  F02B39/00 ,  F02D9/04 ,  F02D9/101 ,  F02D9/1015 ,  F02D9/14 ,  F02M26/05 ,  F02M26/10 ,  F02M26/43 ,  F16K1/12 ,  F16K1/2014 ,  F16K1/222 ,  F16K3/00 ,  F16K11/085 ,  F16K15/026 ,  Y02T10/144

Abstract: High pressure loop exhaust gas circulation is achieved in an exhaust system (10) of an engine (12) by providing an adjustable valve (100) in an exhaust passage (18) of the engine (12). The valve (100) is configured to control fluid flow through the passage (18) and generate pressure to drive the high pressure exhaust gas recirculation. The valve (100) includes a valve inner surface (110) that has a curvilinear profile when viewed in longitudinal cross section. An actuator (140) is connected to the valve (100), and is configured to move the valve (100) relative to the exhaust passage (18) so as to control exhaust gas pressure within the exhaust passage (18). In some embodiments, a pilot tube (280) is used in combination with the valve (100) to generate high pressure exhaust gas recirculation at the engine (12) intake.