发明授权
EP0386006B2 SENSORELEMENT FÜR GRENZSTROMSENSOREN ZUR BESTIMMUNG DES LAMBDA WERTES VON GASGEMISCHEN
失效
传感器元件用于确定气体混合物的λ值极限电流传感器。
- 专利标题: SENSORELEMENT FÜR GRENZSTROMSENSOREN ZUR BESTIMMUNG DES LAMBDA WERTES VON GASGEMISCHEN
- 专利标题(英): Sensor element for limit sensors for determining the lambda value of gaseous mixtures
- 专利标题(中): 传感器元件用于确定气体混合物的λ值极限电流传感器。
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申请号: EP88907117.1申请日: 1988-08-20
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公开(公告)号: EP0386006B2公开(公告)日: 1995-07-12
- 发明人: FRIESE, Karl-Hermann , GRÜNWALD, Werner
- 申请人: ROBERT BOSCH GMBH
- 申请人地址: Postfach 30 02 20 70442 Stuttgart DE
- 专利权人: ROBERT BOSCH GMBH
- 当前专利权人: ROBERT BOSCH GMBH
- 当前专利权人地址: Postfach 30 02 20 70442 Stuttgart DE
- 优先权: DE3728618 19870827
- 国际公布: WO8902074 19890309
- 主分类号: G01N27/419
- IPC分类号: G01N27/419
摘要:
A sensor element for limit sensors for determining the lambda value of gaseous mixtures comprises at least two mutually opposite internal pump electrodes (8 and 8') arranged in a diffusion channel (7). In this way the undesirable electrode polarization which readily occurs in sensor elements with a single internal pump electrode is substantially reduced. At the same time, better use is made of the noble metals required to make the pump electrodes.
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