US 11,814,995 B2
Engine aftertreatment recycling apparatus, and system and method using same
Kunlun Liu, Bargersville, IN (US); Xiaobo Song, Columbus, IN (US); Xing Jin, Columbus, IN (US); Kristopher R. Bare, Columbus, IN (US); Sriram S. Popuri, Greenwood, IN (US); Scott Robert Bardakjy, Columbus, IN (US); and Agneya Turlapati, Indianapolis, IN (US)
Assigned to Cummins Inc., Columbus, IN (US)
Filed by Cummins Inc., Columbus, IN (US)
Filed on May 16, 2022, as Appl. No. 17/663,562.
Application 17/663,562 is a continuation of application No. PCT/US2019/063312, filed on Nov. 26, 2019.
Prior Publication US 2022/0290594 A1, Sep. 15, 2022
Int. Cl. F01N 3/20 (2006.01); B01D 53/94 (2006.01); F02D 41/06 (2006.01); F01N 9/00 (2006.01)
CPC F01N 3/2006 (2013.01) [B01D 53/9418 (2013.01); F01N 3/2066 (2013.01); F02D 41/064 (2013.01); F01N 3/206 (2013.01); F01N 9/00 (2013.01); F01N 2240/16 (2013.01); F01N 2260/06 (2013.01); F01N 2270/04 (2013.01); F01N 2270/08 (2013.01); F01N 2270/10 (2013.01); F01N 2610/1433 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An apparatus comprising:
an exhaust gas recycling system having a closed gas recycling loop including at least one exhaust gas aftertreatment component in the closed gas recycling loop, wherein the exhaust gas recycling system is configured to heat gas circulating within the closed gas recycling loop, and the exhaust gas recycling system includes a blower for circulating heated gas within the closed gas recycling loop.
 
11. A method for operating an internal combustion engine, comprising:
closing a downstream valve and closing an upstream valve of an exhaust gas system to form a closed gas recycling loop, wherein the downstream valve is located in an exhaust gas conduit of the exhaust gas system downstream of at least one aftertreatment component the upstream valve is located in the exhaust gas conduit between the at least one aftertreatment component and the internal combustion engine; and
preheating the at least one aftertreatment component of the exhaust gas system of the internal combustion engine prior to starting the internal combustion engine by exposing the at least one aftertreatment component to heated gas circulating in the closed gas recycling loop, wherein the at least one aftertreatment component is located in the closed gas recycling loop.