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2. 发明授权

US06746584B1 Oxygen sensing device 失效
标题翻译：氧气感测装置
公开(公告)号：US06746584B1
公开(公告)日：2004-06-08
申请号：US09461851
申请日：1999-12-15
申请人： Da Yu Wang , Paul Casey Kikuchi , Lone-Wen F. Tai , David Sturge Eddy , Raymond Leo Bloink , Eric J. Detwiler , Larry Max Oberdier
发明人： Da Yu Wang , Paul Casey Kikuchi , Lone-Wen F. Tai , David Sturge Eddy , Raymond Leo Bloink , Eric J. Detwiler , Larry Max Oberdier
IPC分类号： G01N2741
CPC分类号： G01N27/419
摘要： A wide range oxygen sensor comprising a first oxygen pump cell, the first pump cell comprising: a first and a second electrode, with a first communication zone therebetween, the first electrode being exposed to exhaust gas, the second electrode being exposed to a heat source; and wherein at least one element of said first pump cell incorporates a gas-diffusion limiting characteristic; a second oxygen pump cell, operating at opposite polarity from said first oxygen pump cell, electrically isolated from said first oxygen pump cell, and disposed within a sensor substrate, the second cell comprising: a third and a fourth electrode, with a second communication zone therebetween, the third electrode being exposed to exhaust gas, the fourth electrode being exposed to a heat source; and wherein at least one element of said second pump cell incorporates a gas-diffusion limiting characteristic; at least one heating element for providing heat to said second electrode and said fourth electrode; and an electrical circuit for measuring the air-to-fuel ratio within the exhaust gas incident to said first and third electrodes.
摘要翻译：一种包括第一氧气泵单元的宽范围氧传感器，所述第一泵电池包括：第一和第二电极，其间具有第一连通区域，所述第一电极暴露于废气，所述第二电极暴露于热源 ; 并且其中所述第一泵浦单元的至少一个元件包含气体扩散限制特性; 第二氧泵单元，与所述第一氧泵单元相反极性地操作，与所述第一氧气泵单元电隔离，并且设置在传感器基板内，所述第二单元包括：第三和第四电极，具有第二连通区其间，第三电极暴露于废气，第四电极暴露于热源; 并且其中所述第二泵浦单元的至少一个元件包含气体扩散限制特性; 至少一个用于向所述第二电极和所述第四电极提供热量的加热元件; 以及用于测量入射到所述第一和第三电极的废气中的空气燃料比的电路。

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