公开(公告)号：US10302034B2

公开(公告)日：2019-05-28

申请号：US15416622

申请日：2017-01-26

Applicant: Cummins Inc.

Inventor： Adam W. Kidd ,  Hoseinali Borhan ,  Bibin N. Pattel ,  Edmund P. Hodzen ,  Michael Haas ,  Jeffrey Diwakar Abraham ,  Bryon D. Staebler

IPC: F02D41/02 ,  B01D53/94 ,  F01N3/20 ,  F02D41/14 ,  F02D41/30

Abstract: One exemplary embodiment is a method of operating a system comprising an internal combustion engine system, and an exhaust aftertreatment system comprising an SCR catalyst, and an electronic control system. The method comprises operating the electronic control system to perform the acts of determining a predicted temperature value indicative of a predicted future temperature of the SCR catalyst, determining a temperature profile value using the predicted temperature value and a current temperature value indicative of a current temperature of the SCR catalyst, operating a controller to provide an output indicating a difference between the temperature profile value and a temperature target, determining a heat request using the output of the controller, filtering the heat request using a prediction horizon, and controlling operation of the engine system using the filtered heat request to increase a temperature of the SCR catalyst.

公开(公告)号：US20170211493A1

公开(公告)日：2017-07-27

申请号：US15416622

申请日：2017-01-26

Applicant: Cummins Inc.

Inventor： Adam W. Kidd ,  Hoseinali Borhan ,  Bibin N. Pattel ,  Edmund P. Hodzen ,  Michael Haas ,  Jeffrey Diwakar Abraham ,  Bryon D. Staebler

IPC: F02D41/02 ,  B01D53/94 ,  F02D41/14 ,  F01N3/20 ,  F02D41/30

CPC classification number: F02D41/025 ,  B01D53/9418 ,  B01D53/9477 ,  B01D53/9495 ,  F01N3/208 ,  F01N2590/11 ,  F01N2610/02 ,  F01N2900/0404 ,  F01N2900/0408 ,  F01N2900/0601 ,  F01N2900/0602 ,  F01N2900/10 ,  F01N2900/12 ,  F01N2900/1602 ,  F02D41/024 ,  F02D41/1401 ,  F02D41/1402 ,  F02D41/3005 ,  F02D2041/1409 ,  F02D2041/1432 ,  F02D2200/0804 ,  F02D2200/101 ,  F02D2200/501 ,  F02D2200/701 ,  F02D2200/702 ,  Y02A50/2325 ,  Y02T10/24 ,  Y02T10/26

Abstract: One exemplary embodiment is a method of operating a system comprising an internal combustion engine system, and an exhaust aftertreatment system comprising an SCR catalyst, and an electronic control system. The method comprises operating the electronic control system to perform the acts of determining a predicted temperature value indicative of a predicted future temperature of the SCR catalyst, determining a temperature profile value using the predicted temperature value and a current temperature value indicative of a current temperature of the SCR catalyst, operating a controller to provide an output indicating a difference between the temperature profile value and a temperature target, determining a heat request using the output of the controller, filtering the heat request using a prediction horizon, and controlling operation of the engine system using the filtered heat request to increase a temperature of the SCR catalyst.

公开(公告)号：US20160312678A1

公开(公告)日：2016-10-27

申请号：US15136427

申请日：2016-04-22

Applicant: Cummins Inc.

Inventor： Rohan A. Siddhanthi ,  Bryon D. Staebler ,  Krishna Kamasamudram

IPC: F01N3/20 ,  B01D53/96 ,  B01D53/94 ,  F01N13/00 ,  F01N3/035

CPC classification number: F01N3/2066 ,  B01D53/9418 ,  B01D53/9431 ,  B01D53/9477 ,  B01D2251/2062 ,  B01D2255/20723 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/50 ,  B01D2255/904 ,  B01D2255/911 ,  B01D2257/404 ,  B01D2258/012 ,  F01N3/021 ,  F01N13/0093 ,  F01N2240/40 ,  F01N2510/063 ,  F01N2610/02 ,  Y02C20/10 ,  Y02T10/24

Abstract: An exhaust aftertreatment system configured to reduce nitrous oxide (N2O) formation includes a first selective catalytic reduction (SCR) catalyst. The first SCR catalyst is configured for low N2O formation and low ammonia (NH3) storage capacity. A second SCR catalyst is positioned downstream of the first SCR catalyst. The second SCR catalyst is configured for high NH3 storage capacity.

Abstract translation: 构造成减少一氧化二氮（N2O）形成的排气后处理系统包括第一选择性催化还原（SCR）催化剂。 第一个SCR催化剂配置为低N2O形成和低氨（NH3）储存能力。 第二SCR催化剂位于第一SCR催化剂的下游。 第二SCR催化剂被配置为具有高的NH 3储存能力。

公开(公告)号：US10113462B2

公开(公告)日：2018-10-30

申请号：US15136427

申请日：2016-04-22

Applicant: Cummins Inc.

Inventor： Rohan A. Siddhanthi ,  Bryon D. Staebler ,  Krishna Kamasamudram

IPC: F01N3/20 ,  B01D53/94 ,  F01N13/00 ,  F01N3/021

Abstract: An exhaust aftertreatment system configured to reduce nitrous oxide (N2O) formation includes a first selective catalytic reduction (SCR) catalyst. The first SCR catalyst is configured for low N2O formation and low ammonia (NH3) storage capacity. A second SCR catalyst is positioned downstream of the first SCR catalyst. The second SCR catalyst is configured for high NH3 storage capacity.