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公开(公告)号：WO2021158508A1
公开(公告)日：2021-08-12
申请号：PCT/US2021/016148
申请日：2021-02-02
Applicant: CUMMINS INC.
Inventor： BEINBORN, Aaron William , KOCHER, Lyle E. , KOLHOUSE, J. Steven , MOON, Suk-Min , POPURI, Sriram S. , KODAVASAL, Janardhan , MERCHANT, Ved , BARE, Kristopher R. , BRAHMA, Avra
Abstract: A system and method of controlling operation of an internal combustion engine are provided. The method includes performing a cylinder deactivation operation while running the engine, selecting at least one of the plurality of temperature maintenance actions to increase an exhaust temperature, and performing at least one of the plurality of temperature maintenance actions effective to increase the exhaust temperature. The plurality of temperature maintenance actions may include one or more of a charge air cooler bypass operation, an EGR cooler bypass operation, an aftertreatment system heater operation, a turbocharger bypass operation, a turbocharger geometry adjustment operation, an intake air throttle adjustment operation, and a delayed injection timing operation, or combinations thereof.
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公开(公告)号：WO2021107931A1
公开(公告)日：2021-06-03
申请号：PCT/US2019/063312
申请日：2019-11-26
Applicant: CUMMINS INC.
Inventor： LIU, Kunlun , SONG, Xiaobo , JIN, Xing , BARE, Kristopher R. , POPURI, Sriram S. , BARDAKJY, Scott Robert , TURLAPATI, Agneya
IPC: F02D21/08 , H01M8/04007 , H01M8/04089
Abstract: A recycling loop configuration of an exhaust gas aftertreatment system decreases a level of system-out NOx emissions of an engine. An apparatus including the configuration has an exhaust gas recycling system having a closed gas recycling loop system configured to heat gas circulating within the loop, and a blower for circulating gas within the loop. A method for operating the engine includes preheating at least one aftertreatment component of an exhaust gas aftertreatment system of the engine by exposing the component to heated gas circulating in a closed gas recycling loop.
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