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    • 3. 发明授权
    • Electrochemical sensor structure to determine oxygen content in
combustion exhaust gases
    • 电化学传感器结构来确定燃烧废气中的氧含量
    • US4283261A
    • 1981-08-11
    • US100256
    • 1979-12-04
    • Helmut MaurerKlaus MullerFranz RiegerErnst LinderHermann DietzKarl-Hermann FrieseBodo Ziegler
    • Helmut MaurerKlaus MullerFranz RiegerErnst LinderHermann DietzKarl-Hermann FrieseBodo Ziegler
    • G01N27/407G01N27/416G01N27/46
    • G01N27/4071
    • To measure partial oxygen pressure in gases, particularly exhaust gases of automotive-type combustion engines, a solid electrolyte plate of elongated rectangular configuration has at least one electrode pair applied to a single surface thereof, which is exposed to the measuring gas. Preferably, the gap between electrodes is elongated, by forming the electrodes in comb-interdigited form. A thermocouple - temperature sensor can be applied between connecting tracks for the electrodes which extend longitudinally of the electrolyte plate towards the other end thereof, through a sealing mass holding the plate within a housing, the other end forming, simultaneously, a connection terminal for connection to an electric connector or plug. A heating element can be placed on the obverse side of the plate, preferably in the position in the gap between the electrodes. More than one such sensor element may be secured in the same housing, and, for example, two such plates, back to back, with the heating element therebetween, spaced from each other, or as a common block. The sensor may be used for potentiometric and/or polarographic measurement, depending upon cover coatings on the electrodes which control exposure thereof to the gases, catalytic or non-catalytic action of the electrodes (for example being of platinum or gold, respectively) and whether a voltage is applied across the electrode terminals, or the sensor is to operate as an electrochemical cell. Such sensor can be inexpensively made, are suitable for mass production, and flexible with respect to their mode of operation.
    • 为了测量气体,特别是汽车型内燃机的废气中的部分氧气压力,细长矩形结构的固体电解质板具有至少一个电极对,其被施加到暴露于测量气体的单个表面。 优选地,通过以梳形交错形式形成电极,电极之间的间隙是细长的。 热电偶 - 温度传感器可以被施加在电极的连接轨道之间,电极的连接轨道通过将板保持在壳体内的密封块向另一端延伸,另一端同时形成用于连接的连接端子 电连接器或插头。 加热元件可以放置在板的正面上,优选地位于电极之间的间隙中的位置。 多个这样的传感器元件可以固定在相同的壳体中,并且例如两个这样的板,背对背,加热元件在它们之间,彼此间隔开,或者作为公共块。 传感器可以用于电位和/或极谱测量,这取决于电极上的覆盖物涂层,其控制其暴露于气体,电极的催化或非催化作用(例如分别为铂或金),以及是否 在电极端子上施加电压,或者传感器用作电化学电池。 这种传感器可以廉价地制造,适合于批量生产,并且相对于它们的操作模式是灵活的。
    • 5. 发明授权
    • Gas-permeable connecting lead for a probe
    • 用于探头的透气连接导线
    • US6018982A
    • 2000-02-01
    • US51099
    • 1998-05-26
    • Karl-Hermann FrieseHelmut WeylAnton Hans
    • Karl-Hermann FrieseHelmut WeylAnton Hans
    • G01N27/409G01N27/407G01N27/26
    • G01N27/407G01N27/4076
    • A Lambda probe type gas sensor for use in determining the oxygen content of exhaust gases produced by an internal combustion engine includes a sensor element of the electrochemical, solid electrolyte, metallic oxide semiconductor or Lambda air-fuel ratio variety, which sensor element is arranged in a metallic housing and is contacted by connecting cables that are brought out of the metallic housing. These connecting cables are each surrounded by cable insulation that is made of PTFE (Polytetra-fluoroethylene). The surface of the cable insulation has, at least in certain areas, a gas-permeable section that allows a reference atmosphere to arrive inside the cable insulation and, from there, in the metallic housing. The gas-permeable section, on the other hand, prevents ingress of liquids such as fuel, condensed water, etc., This is achieved, for example, by an additionally applied, PTFE film that is placed over the gas-permeable section.
    • PCT No.PCT / DE97 / 01562 Sec。 371日期:1998年5月26日 102(e)日期1998年5月26日PCT提交1997年7月24日PCT公布。 第WO98 / 05951号公报 日期1998年2月12日用于确定由内燃机产生的废气的氧含量的λ探针型气体传感器包括电化学,固体电解质,金属氧化物半导体或λ空气燃料比品种的传感器元件,其中 传感器元件布置在金属壳体中并且通过连接从金属壳体外出的电缆而接触。 这些连接电缆各自被由PTFE(聚四氟乙烯)制成的电缆绝缘体包围。 电缆绝缘体的表面至少在某些区域中具有允许参考气氛到达电缆绝缘体内部并且从那里到达金属外壳的透气部分。 另一方面,透气部防止了诸如燃料,冷凝水等的液体的进入,例如通过设置在透气部上的附加的PTFE膜来实现。
    • 6. 发明授权
    • Seal for a sensor element of a gas sensor
    • 气体传感器传感器元件的密封
    • US5846391A
    • 1998-12-08
    • US836425
    • 1997-04-29
    • Karl-Hermann FrieseHelmut WeylHans-Martin WiedenmannAnton Hans
    • Karl-Hermann FrieseHelmut WeylHans-Martin WiedenmannAnton Hans
    • G01N27/409G01N27/407
    • G01N27/4078
    • A seal for a sensor element for a gas sensor for determining the oxygen content in a gas to be measured including exhaust gases of internal combustion engines, the seal including a metallic housing having defined therein a longitudinal bore; a sensor element inserted into the longitudinal bore; and a sealing arrangement provided in the longitudinal bore, surrounding at least a portion of the sensor element, and comprised of at least one seal element comprised of steatite and an additional seal element comprised of boron nitride arranged in contact with one another and in a stack having a side near the gas to be measured so that, when there is one seal element comprised of steatite, the one seal element comprised of steatite is positioned on the side of the stack near the gas to be measured, and so that, when there are two seal elements comprised of steatite, the additional seal element is positioned between the two seal elements comprised of steatite, wherein the at least one seal element comprised of steatite and the additional seal element comprised of boron nitride are inserted into the longitudinal bore of the housing as deformable rings and are pressed-in therein, and wherein, during the pressing-in, the deformable rings are deformed in such a way that the at least one seal element comprised of steatite and the additional seal element comprised of boron nitride are pushed against the sensor element and the housing.
    • PCT No.PCT / DE96 / 00567 Sec。 371日期1997年04月29日 102(e)日期1997年4月29日PCT 1996年3月21日PCT公布。 公开号WO97 / 08542 日期1997年3月6日用于气体传感器的传感器元件的密封件,用于确定包括内燃机废气的待测气体中的氧含量,所述密封件包括金属壳体,其中限定有纵向孔; 插入纵向孔中的传感器元件; 以及设置在所述纵向孔中的密封装置,围绕所述传感器元件的至少一部分,并且包括至少一个由滑石组成的密封元件和由氮化硼组成的另外的密封元件,所述氮化硼彼此接触并且在堆叠 具有靠近要测量的气体的一侧,使得当存在由滑石组成的一个密封元件时,由滑石组成的一个密封元件位于靠近待测量气体的堆叠侧,并且当那里 是由滑石组成的两个密封元件,附加的密封元件位于由滑石组成的两个密封元件之间,其中由滑石组成的至少一个密封元件和由氮化硼组成的另外的密封元件被插入到 壳体作为可变形环并被压入其中,并且其中,在压入期间,可变形环以这样的方式变形,使得至少一个 由滑石组成的气体元件和由氮化硼组成的另外的密封元件被推靠在传感器元件和壳体上。
    • 7. 发明授权
    • Seal for a sensor element of a gas sensor
    • 气体传感器传感器元件的密封
    • US5795454A
    • 1998-08-18
    • US569074
    • 1995-12-04
    • Karl-Hermann FrieseHelmut WeylRomuald FriesHans-Martin WiedenmannAnton Hans
    • Karl-Hermann FrieseHelmut WeylRomuald FriesHans-Martin WiedenmannAnton Hans
    • G01N27/409G01N27/12G01N27/407F16J15/14
    • G01N27/4078G01N27/407G01N27/4077Y10S277/936Y10S277/938Y10S277/939Y10S277/941Y10S277/943
    • A seal for a sensor element of a gas sensor for determining the oxygen content in gases including exhaust gases of an internal combustion engine, which seal seals the sensor element in a longitudinal bore of a housing, the seal including a sealing stack which is positioned within the longitudinal bore of the housing and around the sensor element in use and which is comprised of two sealing bodies and an additional seal positioned between the two sealing bodies. The two sealing bodies are comprised of a pre-sintered ceramic material. The additional seal is comprised of a pre-pressed powder material and has a porosity which is lower than that of the two sealing bodies. The two sealing bodies and the additional seal are compressed together within the longitudinal bore in use, whereby at least the additional seal is deformed so that the sensor element is sealed in a gap-free manner within the longitudinal bore. The pre-pressed powder material of the additional seal may consist essentially of a ductile metal, which may be one of nickel or copper, or graphite which may be fiber-reinforced.
    • PCT No.PCT / DE94 / 00537 Sec。 371 1995年12月4日第 102(e)日期1995年12月4日PCT 1994年5月11日PCT公布。 公开号WO94 / 29710 日期1994年12月22日用于确定包括内燃机的废气在内的气体中的氧含量的气体传感器的传感器元件的密封件,该密封件将传感器元件密封在壳体的纵向孔中,所述密封件包括密封件 堆叠,其位于壳体的纵向孔内并且在使用中围绕传感器元件,并且由两个密封体和位于两个密封体之间的附加密封件组成。 两个密封体由预烧结的陶瓷材料组成。 附加密封件由预压粉末材料组成,并且具有低于两个密封体的孔隙率。 两个密封体和附加密封件在使用中在纵向孔内压缩在一起,由此至少附加的密封件变形,使得传感器元件以无间隙的方式密封在纵向孔内。 附加密封件的预压粉末材料可以由可以是镍或铜之一的延性金属或可以是纤维增强的石墨组成。
    • 10. 发明授权
    • Electrochemical measuring sensor
    • 电化学测量传感器
    • US5435901A
    • 1995-07-25
    • US121961
    • 1993-09-15
    • Karl-Hermann FrieseHelmut WeylWerner Wieland
    • Karl-Hermann FrieseHelmut WeylWerner Wieland
    • G01N27/407G01N27/409
    • G01N27/4078G01N27/407
    • An electrochemical measuring sensor is proposed for determining the oxygen content in exhaust gases which has a base body made of an ion-conducting solid electrolyte in the form of a tube closed at one end, an inner electrode, an outer electrode disposed on the external surface of the probe block and having a conductor track on the connection side which has a covering layer, a ceramic protective layer and a metallic sealing ring for sealing the reference space from the exhaust gas space and for making an electrical contact to the housing in which the measuring sensor is to be inserted. The electrochemical covering layer covering the conductor track is brought down on the reference side of the probe block to below the metallic sealing ring and the track is formed with uncovered lateral extensions making electrical contact with the ring. This makes it possible to significantly prolong the service life of the measuring sensor.
    • 提出一种电化学测量传感器,用于确定废气中的氧含量,其具有由一端封闭的管形式的离子导电固体电解质制成的基体,内电极,设置在外表面上的外电极 并且具有在连接侧上的具有覆盖层的导体轨道,陶瓷保护层和金属密封环,用于将参考空间与废气空间密封并用于与壳体电接触,其中, 测量传感器将被插入。 覆盖导体轨道的电化学覆盖层在探针块的参考侧下降到金属密封环的下方,并且轨道形成有与环形成电接触的未覆盖的侧向延伸部。 这样可以显着延长测量传感器的使用寿命。