公开(公告)号：US11098631B2

公开(公告)日：2021-08-24

申请号：US16523628

申请日：2019-07-26

Applicant: Caterpillar Inc.

Inventor： Andrew M. Denis ,  Min Xiao ,  Wengang Chen ,  Zhenhua Zhang ,  Qiang Zhu ,  Mohamed I. Daoud

IPC: F01N13/08 ,  F01N13/00 ,  F01N11/00

Abstract: A NOx sensor protection system includes a flow control device forming an internal chamber with exhaust and shield gas ports and a NOx sensor. The flow control device is configured to selectively allow a flow of exhaust from an exhaust pipe to the NOx sensor when an internal combustion engine is operated with a first fuel, and to selectively direct shield gas from the shield gas port at an angle of 135° to 180° to the NOx sensor to inhibit the flow of exhaust from the exhaust pipe to the NOx sensor when the engine is operated with a second fuel.

公开(公告)号：US20210025314A1

公开(公告)日：2021-01-28

申请号：US16523628

申请日：2019-07-26

Applicant: Caterpillar Inc.

Inventor： Andrew M. Denis ,  Min Xiao ,  Wengang Chen ,  Zhenhua Zhang ,  Qiang Zhu ,  Mohamed I. Daoud

IPC: F01N13/00 ,  F01N11/00 ,  F01N13/08

Abstract: A NOx sensor protection system includes a flow control device forming an internal chamber with exhaust and shield gas ports and a NOx sensor. The flow control device is configured to selectively allow a flow of exhaust from an exhaust pipe to the NOx sensor when an internal combustion engine is operated with a first fuel, and to selectively direct shield gas from the shield gas port at an angle of 135° to 180° to the NOx sensor to inhibit the flow of exhaust from the exhaust pipe to the NOx sensor when the engine is operated with a second fuel.

公开(公告)号：US20160194995A1

公开(公告)日：2016-07-07

申请号：US15067204

申请日：2016-03-11

Applicant: Caterpillar Inc.

Inventor： Kevin Weiss ,  Mohamed I. Daoud ,  Yung T. Bui ,  Arvind Jujare ,  Chiranjeevi Mangamuri ,  Timothy Alcenius

IPC: F01N3/28

CPC classification number: F01N3/2892 ,  B01F3/04021 ,  B01F5/0451 ,  B01F5/061 ,  B01F5/0688 ,  F01N3/2066 ,  F01N13/011 ,  F01N13/08 ,  F01N13/1805 ,  F01N2240/20 ,  F01N2470/16 ,  F01N2470/18 ,  F01N2490/00

Abstract: A flow mixing device includes a body having a first end, a second end, and an interior volume defined between them. An inlet plate, coupled to the first end of the body, defines at least two inlet orifices in fluid communication with the interior volume. Similarly, an outlet plate, coupled to the second end defines an outlet passage of the flow mixing device. A diffuser conduit, coupled to the inlet plate, defines an inlet passage disposed in fluid communication with the respective inlet orifices. A separator plate assembly disposed in the interior volume extends partially between the first and second ends of the body. Flow guiding vanes, coupled proximal to the second end, extend partially within the diffuser conduit.

Abstract translation: 流动混合装置包括具有第一端，第二端和在它们之间限定的内部空间的主体。 联接到主体的第一端的入口板限定与内部容积流体连通的至少两个入口孔。 类似地，联接到第二端的出口板限定了流动混合装置的出口通道。 耦合到入口板的扩散器导管限定了与各个入口孔流体连通的入口通道。 设置在内部空间中的分隔板组件部分地延伸在主体的第一和第二端之间。 靠近第二端的流动引导叶片部分延伸在扩散管道内。