
基本信息:
- 专利标题: 发动机排气系统
- 申请号:CN201710285856.1 申请日:2017-04-27
- 公开(公告)号:CN107339140B 公开(公告)日:2019-11-05
- 发明人: L·N·迪潘纳 , R·阿达尼斯 , M·J·小帕拉托 , R·米塔尔 , J·李
- 申请人: 通用汽车环球科技运作有限责任公司
- 申请人地址: 美国密歇根州
- 专利权人: 通用汽车环球科技运作有限责任公司
- 当前专利权人: 通用汽车环球科技运作有限责任公司
- 当前专利权人地址: 美国密歇根州
- 代理机构: 北京市柳沈律师事务所
- 代理人: 贺紫秋
- 优先权: 15/144871 2016.05.03 US
- 主分类号: F01N13/00
- IPC分类号: F01N13/00 ; F01N3/28
An engine exhaust system includes an exhaust pipe assembly having an engine exhaust system inlet configured to receive engine exhaust and an engine exhaust system outlet. The system includes a first selective catalytic reduction (SCR) catalyst device positioned downstream in exhaust flow from the engine exhaust system inlet. The first SCR catalyst device includes a substrate with a metallic catalyst coated on the substrate. An electric heater is configured to heat the metallic catalyst. A second SCR catalyst device is positioned downstream in engine exhaust flow from the first SCR catalyst device and upstream of the engine exhaust system outlet. The first SCR catalyst device and the exhaust pipe assembly define an empty chamber between the substrate and the second SCR catalyst device. Engine exhaust flows directly from the substrate to the second SCR catalyst device through the empty chamber.
公开/授权文献:
- CN107339140A 发动机排气系统 公开/授权日:2017-11-10
IPC结构图谱:
F | 机械工程;照明;加热;武器;爆破 |
--F01 | 一般机器或发动机;一般的发动机装置;蒸汽机 |
----F01N | 一般机器或发动机的气流消音器或排气装置;内燃机的气流消音器或排气装置 |
------F01N13/00 | 以结构特点为特征的排气装置或消音装置 |