基本信息:
- 专利标题： 用于运行以甲烷作燃料的发动机并用甲烷氧化催化剂处理排放气体的方法和设备
- 专利标题（英）：Method and apparatus for operating a methane-fuelled engine and treating exhaust gas with a methane oxidation catalyst
- 申请号：CN200780004413.5 申请日：2007-02-01
- 公开(公告)号：CN101379279B 公开(公告)日：2013-11-06
- 发明人： R·艾西莫 , M·邓恩 , J·哈里斯 , O·勒博斯坦德 , D·A·卢
- 申请人： 西港能源有限公司
- 申请人地址： 加拿大大不列颠哥伦比亚
- 专利权人： 西港能源有限公司
- 当前专利权人： 西港能源有限公司
- 当前专利权人地址： 加拿大大不列颠哥伦比亚
- 代理机构： 北京北翔知识产权代理有限公司
- 代理人： 杨勇; 郑建晖
- 优先权： 2,534,031 2006.02.03 CA
- 国际申请： PCT/CA2007/000161 2007.02.01
- 国际公布： WO2007/087725 EN 2007.08.09
- 进入国家日期： 2008-08-04
- 主分类号： F02D19/02
- IPC分类号： F02D19/02
A method and apparatus is provided for operating a methane-fuelled engine in a lean burn operating mode or a stoichiometric operating mode. When a methane oxidation catalyst is employed to treat the exhaust gas from an engine running in a lean burn operating mode, the catalyst can be inhibited by SOx reducing the catalyst's methane conversion efficiency. When an engine is running in a stoichiometric operating mode, desulphation of the catalyst can occur, thereby restoring the catalyst's methane conversion efficiency. The disclosed method relates to fuelling the engine with a lean fuel mixture when operating the engine at one of a predetermined first set of points on an engine map, and fuelling the engine with a rich fuel mixture when operating the engine at one of a predetermined second set of points on said engine map. The exhaust gas from the engine flows through a methane oxidation catalyst, which is preferred embodiments is adapted to promote the reduction of NOx when the engine is running in the stoichiometric operating mode. The apparatus comprises means for detecting and controlling lambda, and an electronic controller programmed to operate the engine in one of a lean burn mode and a fuel-rich mode at respective predetermined points on an engine map.
公开/授权文献:
- CN101379279A 用于运行以甲烷作燃料的发动机并用甲烷氧化催化剂处理排放气体的方法和设备 公开/授权日：2009-03-04