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    • 5. 发明授权
    • Measuring sensor for determining the oxygen content of gas mixtures
    • 用于测定气体混合物氧含量的测量传感器
    • US5474665A
    • 1995-12-12
    • US306572
    • 1994-09-15
    • Karl-Hermann FrieseHermann DietzHermann FischerManfred KoederWerner GruenwaldUlrich Eisele
    • Karl-Hermann FrieseHermann DietzHermann FischerManfred KoederWerner GruenwaldUlrich Eisele
    • F02B1/04F02D41/14G01N27/409G01N27/419G01N27/407
    • G01N27/419F02B1/04
    • 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.
    • 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。
    • 7. 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。
    • 8. 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。
    • 9. 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
    • Process for producing PTC temperature sensor elements for PTC
temperature sensor
    • 用于生产PTC温度传感器PTC温度传感器元件的工艺
    • US5172466A
    • 1992-12-22
    • US715798
    • 1991-06-14
    • Karl-Hermann FrieseHans-Martin WiedenmannGunther Stecher
    • Karl-Hermann FrieseHans-Martin WiedenmannGunther Stecher
    • G01K7/16G01J5/02G01J5/20G01K7/18G01K7/22G01N27/416G01N27/417H01C1/024H01C1/034H01C7/02
    • G01K7/183H01C7/021Y10T29/49085
    • A PTC temperature sensor and a process for producing PTC temperature sensing elements from ceramic films for a PTC temperature sensor are proposed. The PTC temperature sensing elements are so designed that the PTC resistor track is hermetically encapsulated with respect to the gas being measured and the ambient air. Ceramic films based on an insulator ceramic, in particular based on Al.sub.2 O.sub.3, and ceramic films based on a solid electrolyte can be used to produce the temperature sensing elements. The PTC temperature sensor according to the invention is distinguished, in particular, by the fact that, while the manufacturing procedure is cheap, it is not subject to aging due to the effect of varying O.sub.2 partial pressures, has a high resistance to aging of the resistance characteristic in rich and lean gas mixtures, for example in motor vehicle exhaust gases, at 300.degree.-1000.degree. C. and has a construction free from extraneous potential, is characterized by short response times owning to its low heat capacity and is suitable for incorportion in very narrow housing as a consequence of small dimensions.
    • 提出了一种用于PTC温度传感器的PTC温度传感器和用于从陶瓷膜生产PTC温度传感元件的工艺。 PTC温度感测元件被设计成使得PTC电阻轨道相对于被测量的气体和环境空气被气密地封装。 可以使用基于绝缘体陶瓷,特别是基于Al 2 O 3的陶瓷膜和基于固体电解质的陶瓷膜来制造温度感测元件。 根据本发明的PTC温度传感器的特征在于,特别是由于制造过程便宜,由于变化的O2分压的影响,其不会老化,因此具有高耐老化性 富含和贫气混合物的阻力特性,例如在机动车排气中,在300°-1000℃,具有无外力的结构,其特征在于具有低热容量的响应时间短,适用于 由于小尺寸,狭窄房屋的配额不合。