发明授权
US06632338B2 Gas sensing element incorporated in a gas sensor for an internal combustion engine
有权
气体传感元件结合在用于内燃机的气体传感器中
- 专利标题： Gas sensing element incorporated in a gas sensor for an internal combustion engine
- 专利标题（中）： 气体传感元件结合在用于内燃机的气体传感器中
-
申请号： US09877125申请日： 2001-06-11
-
公开(公告)号： US06632338B2公开(公告)日： 2003-10-14
- 发明人: Namitsugu Fujii , Motoaki Satou , Kiyomi Kobayashi , Yasumichi Hotta
- 申请人： Namitsugu Fujii , Motoaki Satou , Kiyomi Kobayashi , Yasumichi Hotta
- 优先权： JP2000-175657 20000612; JP2001-088346 20010326
- 主分类号： G01N2741
- IPC分类号： G01N2741
摘要：
A second protective layer is a ceramic porous protective layer comprising coarse particles and fine particles structurally arranged in such a manner that interparticle cavities formed between the coarse particles are filled with the fine particles. At least either of the coarse particles and the fine particles contain at least one selected from the group consisting of &ggr;-Al2O3, &thgr;-Al2O3, &dgr;-Al2O3 and solid solution having the same crystal structure as those of &ggr;-Al2O3, &thgr;-Al2O3, &dgr;-Al2O3.