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1. 发明授权

US5474665A Measuring sensor for determining the oxygen content of gas mixtures 失效
标题翻译：用于测定气体混合物氧含量的测量传感器
公开(公告)号：US5474665A
公开(公告)日：1995-12-12
申请号：US306572
申请日：1994-09-15
申请人： Karl-Hermann Friese , Hermann Dietz , Hermann Fischer , Manfred Koeder , Werner Gruenwald , Ulrich Eisele
发明人： Karl-Hermann Friese , Hermann Dietz , Hermann Fischer , Manfred Koeder , Werner Gruenwald , Ulrich Eisele
IPC分类号： F02B1/04 , F02D41/14 , G01N27/409 , G01N27/419 , G01N27/407
CPC分类号： G01N27/419 , F02B1/04
摘要： The invention relates to a measuring sensor having pump reference for measuring the oxygen content of gas mixtures, particularly exhaust gases of internal combustion engines. The sensor includes a measuring cell (A) and a reference cell (B) each having a pair of electrodes, with one of each respective pairs of electrodes being common to the two cells, and having a fixed electrolyte. Reference cell (B) has defined therein an internal oxygen reference zone which is hermetically sealed from the gas mixture and which is connected to the atmosphere by way of a pressure-equalization line. The measuring cell (A) and the reference cell (B) can be heated by heating apparatus to a temperature at which the fixed electrolyte has an ionic conductivity which is sufficiently high. The heating apparatus and a porous insulation are advantageously disposed in the vicinity of the electrode of the reference cell which is not in common with the measuring cell and which is porous so that the porous insulation, together with the porous electrode, form the internal oxygen reference zone and, together with the porous electrode and its porous conductor track, form the pressure-equalization line.
摘要翻译：本发明涉及一种具有用于测量气体混合物，特别是内燃机废气的氧含量的泵参考的测量传感器。传感器包括测量单元（A）和参考单元（B），每个参考单元具有一对电极，每对电极中的每一对电极与两个单元共用，并具有固定的电解液。参考电池（B）在其中限定了内部氧参考区，其内部氧参考区与气体混合物气密密封，并通过压力平衡线连接到大气。测量单元（A）和参考单元（B）可以通过加热装置加热至固定电解质具有足够高的离子电导率的温度。加热装置和多孔绝缘体有利地设置在参比单元的电极附近，其与测量池不相同，并且是多孔的，使得多孔绝缘体与多孔电极一起形成内部氧参考并且与多孔电极及其多孔导体轨道一起形成压力平衡线。

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