公开(公告)号：US11143078B2

公开(公告)日：2021-10-12

申请号：US16717409

申请日：2019-12-17

Applicant: Caterpillar Inc.

Inventor： Paul R. Moore ,  Ling Deng ,  Wilce Damion Williams

IPC: F01N3/20 ,  F01N13/00 ,  F01N3/035 ,  F01N3/10

Abstract: A system for the treatment of exhaust gases from an internal combustion engine with a combustion chamber includes an upstream DEF injector disposed to introduce DEF to the combustion chamber and a close-coupled SCR catalyst downstream of and in close-coupled relation to the internal combustion engine. Downstream of the close-coupled SCR catalyst may be a primary SCR catalyst and a primary DEF injector. The system may operate to reduce NO2 in the close-coupled SCR catalyst during low-load conditions of the internal combustion engine and reduce NO2 in the primary SCR catalyst during loaded conditions.

公开(公告)号：US20210180494A1

公开(公告)日：2021-06-17

申请号：US16717409

申请日：2019-12-17

Applicant: Caterpillar Inc.

Inventor： Paul R. Moore ,  Ling Deng ,  Wilce Damion Williams

IPC: F01N3/20 ,  F01N13/00

Abstract: A system for the treatment of exhaust gases from an internal combustion engine with a combustion chamber includes an upstream DEF injector disposed to introduce DEF to the combustion chamber and a close-coupled SCR catalyst downstream of and in close-coupled relation to the internal combustion engine. Downstream of the close-coupled SCR catalyst may be a primary SCR catalyst and a primary DEF injector. The system may operate to reduce NO2 in the close-coupled SCR catalyst during low-load conditions of the internal combustion engine and reduce NO2 in the primary SCR catalyst during loaded conditions.

公开(公告)号：US10036294B2

公开(公告)日：2018-07-31

申请号：US14724438

申请日：2015-05-28

Applicant: Caterpillar Inc.

Inventor： Juan A. Garduno ,  James Deason ,  Julian Justin ,  R. Zachary Richey ,  Ling Deng ,  James D. Peltier

IPC: F01N3/20 ,  F01N3/28 ,  B01D53/94

CPC classification number: F01N3/2066 ,  B01D53/9418 ,  B01D53/944 ,  B01D53/9472 ,  B01D2255/9035 ,  B01D2258/012 ,  B01D2258/018 ,  B01D2259/4566 ,  F01N3/2839 ,  F01N2450/02 ,  F01N2450/30 ,  F01N2590/10 ,  Y02T10/24

Abstract: An aftertreatment module includes a catalytic brick having upstream and downstream flanges sized to extend over potential leak flow paths between bricks. Additionally, an aftertreatment module has an array of similarly flanged bricks to reduce leakage through all interfaces between adjacent bricks. A frame for holding the array of bricks includes flow modulators to restrict leakage through an interface between the frame and at least one side surface defined by the array of bricks.

公开(公告)号：US09987612B1

公开(公告)日：2018-06-05

申请号：US15486411

申请日：2017-04-13

Applicant: Caterpillar Inc.

Inventor： David Mark Ginter ,  Ling Deng ,  Wilce Damion Williams ,  Ronald G. Silver

IPC: B01J19/24 ,  C01B3/40 ,  C01B3/38

CPC classification number: B01J19/2485 ,  B01J19/24 ,  B01J19/2475 ,  B01J2219/24 ,  B01J2219/2423 ,  B01J2219/2428 ,  C01B3/382 ,  C01B3/40 ,  C01B2203/0233 ,  C01B2203/0261 ,  C01B2203/1023 ,  C01B2203/1064

Abstract: A reactor assembly is provided. The reactor assembly includes a substrate and a first catalytic layer provided on the substrate. The first catalytic layer further includes a first temperature zone configured to operate at a first temperature. The first catalytic layer further includes a second temperature zone extending from the first temperature zone. The second temperature zone is configured to operate at a second temperature. The second temperature is lower than the first temperature. The reactor assembly also includes a diffusion barrier coating provided on the first catalytic layer. The diffusion barrier coating is configured to regulate a diffusion of gas phase oxygen therethrough for controlling the first temperature with respect to the second temperature.

公开(公告)号：US09808763B2

公开(公告)日：2017-11-07

申请号：US14962385

申请日：2015-12-08

Applicant: Caterpillar Inc.

Inventor： David Ginter ,  Ling Deng ,  Paul Park ,  Scott B. Fiveland

IPC: B01D53/94

CPC classification number: B01D53/9418 ,  B01D53/9431 ,  B01D53/9459 ,  B01D53/9495 ,  B01D2251/21 ,  B01D2255/904 ,  B01D2257/404 ,  B01D2258/012 ,  F01N3/0842 ,  F01N3/2066 ,  F01N3/2073 ,  F01N3/208 ,  F01N2610/03 ,  Y02T10/24

Abstract: A NOx control system includes a lean NOx catalyst and an alcohol generator. The lean NOx catalyst includes a substrate and a hydrocarbon selective catalytic reduction (HC-SCR) catalyst disposed on the substrate. The HC-SCR catalyst catalyzes a reduction of NOx with an alcohol. The alcohol generator generates the alcohol.

公开(公告)号：US20170157563A1

公开(公告)日：2017-06-08

申请号：US14962385

申请日：2015-12-08

Applicant: Caterpillar Inc.

Inventor： David Ginter ,  Ling Deng ,  Paul Park ,  Scott B. Fiveland

IPC: B01D53/94

CPC classification number: B01D53/9418 ,  B01D53/9431 ,  B01D53/9459 ,  B01D53/9495 ,  B01D2251/21 ,  B01D2255/904 ,  B01D2257/404 ,  B01D2258/012 ,  F01N3/0842 ,  F01N3/2066 ,  F01N3/2073 ,  F01N3/208 ,  F01N2610/03 ,  Y02T10/24

Abstract: A NOx control system includes a lean NOx catalyst and an alcohol generator. The lean NOx catalyst includes a substrate and a hydrocarbon selective catalytic reduction (HC-SCR) catalyst disposed on the substrate. The HC-SCR catalyst catalyzes a reduction of NOx with an alcohol. The alcohol generator generates the alcohol.

公开(公告)号：US20160348558A1

公开(公告)日：2016-12-01

申请号：US14724438

申请日：2015-05-28

Applicant: Caterpillar Inc.

Inventor： Juan A. Garduno ,  James Deason ,  Julian Justin ,  R. Zachary Richey ,  Ling Deng ,  James D. Peltier

IPC: F01N3/20 ,  F01N3/28 ,  B01D53/94

CPC classification number: F01N3/2066 ,  B01D53/9418 ,  B01D53/944 ,  B01D53/9472 ,  B01D2255/9035 ,  B01D2258/012 ,  B01D2258/018 ,  B01D2259/4566 ,  F01N3/2839 ,  F01N2450/02 ,  F01N2450/30 ,  F01N2590/10 ,  Y02T10/24

Abstract: An aftertreatment module includes a catalytic brick having upstream and downstream flanges sized to extend over potential leak flow paths between bricks. Additionally, an aftertreatment module has an array of similarly flanged bricks to reduce leakage through all interfaces between adjacent bricks. A frame for holding the array of bricks includes flow modulators to restrict leakage through an interface between the frame and at least one side surface defined by the array of bricks.

Abstract translation: 后处理模块包括具有上游和下游法兰的催化砖，其大小适于在砖之间的潜在泄漏流动路径上延伸。 此外，后处理模块具有类似的凸缘砖的阵列，以减少相邻砖之间的所有界面的泄漏。 用于保持砖阵列的框架包括流动调节器，以限制通过框架与由砖阵列限定的至少一个侧表面之间的界面的泄漏。