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    • 11. 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。
    • 12. 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。
    • 13. 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。
    • 14. 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。
    • 15. 发明授权
    • NTC temperature sensor and process for producing NTC temperature sensing
elements
    • NTC温度传感器和生产NTC温度传感元件的工艺
    • US5142266A
    • 1992-08-25
    • US466286
    • 1990-03-26
    • Karl-Hermann FrieseGunther StecherHans-Martin Wiedenmann
    • Karl-Hermann FrieseGunther StecherHans-Martin Wiedenmann
    • G01K7/16G01K7/22G01N27/406G01N27/416H01C7/04
    • H01C7/043G01K7/223G01N27/4067
    • The NTC temperature sensor includes a NTC temperature sensing element having an NTC resistor and made of a laminated composite of ceramic films, which is so designed that the ambient air or oxygen supplied by electrolytic pumping has free access, via a channel in the laminated composite, to the NTC resistor. The NTC resistor is hermetically sealed from a gas being measured. Solid electrolyte films which conduct O.sup.-2 ions, and films based on Al.sub.2 O.sub.3 can be used to make the laminated composite. The NTC resistor characteristic curve is independent of the composition of the gas being measured. The laminated composite can be formed of at least three solid electrolyte ceramic films including a base film provided with punched-out interconnection holes and conductor tracks printed by thick film technology, an intermediate film having a punched-out channel and a channel enlargement around the ends of the conductor tracks forming the electrodes of the NTC resistor, and a covering film.
    • PCT No.PCT / DE88 / 00528 Sec。 371 1990年3月26日第 102(e)1990年3月26日PCT PCT公布1988年8月30日PCT。 出版物WO89 / 03115 日期2004年4月6日。NTC温度传感器包括NTC温度感测元件,其具有NTC电阻器并由陶瓷膜的层压复合材料制成,其被设计成使得通过电解泵送供应的环境空气或氧气可以自由通过, 一个通道在叠层复合材料中,到NTC电阻。 NTC电阻器与被测气体气密密封。 可以使用导电O-2离子的固体电解质膜和基于Al2O3的膜来制备层压复合材料。 NTC电阻特性曲线与被测气体的组成无关。 层压复合体可以由至少三个固体电解质陶瓷膜形成,该固体电解质陶瓷膜包括设置有冲孔互连孔的底膜和通过厚膜技术印刷的导体轨迹,具有冲压通道的中间膜和在端部周围的通道放大 的形成NTC电阻器的电极的导体轨迹以及覆盖膜。
    • 18. 发明授权
    • Electro-chemical sensor
    • 电化学传感器
    • US4021326A
    • 1977-05-03
    • US447475
    • 1974-03-04
    • Rudolf PollnerKarl-Hermann FrieseBernhard ToppHorst Neidhard
    • Rudolf PollnerKarl-Hermann FrieseBernhard ToppHorst Neidhard
    • G01N27/407G01N27/46
    • G01N27/4075G01N27/4077
    • Electro-chemical sensor to determine oxygen concentration in hot internal combustion exhaust gases in the form of a closed, tubular element having a solid ion conductive electrolyte; an electron-conductive coating on the inner surface thereof; a porous or fissured electron conductive layer on the outer surface of said solid electrolyte or on a part of said surface, part of the pores or fissures being macroporous, said layer being of a material which catalyzes the formation from said hot exhaust gases of those compounds that are thermodynamically stable at the exhaust temperature; and a porous protective electrically insulating coating on said porous electron-conductive layer. Preferably, a top coating of a heat-resistant metal is applied, which top coating has additionally properties to act as a getter with respect to poisons affecting the catalyzing material.
    • 电化学传感器,用于确定热内燃废气中的氧浓度,其形式为具有固体离子导电电解质的封闭管状元件; 在其内表面上的电子传导涂层; 在所述固体电解质的外表面上或在所述表面的一部分上的多孔或裂缝的电子传导层,部分孔或裂缝是大孔的,所述层是催化从那些化合物的所述热废气形成的材料 在排气温度下热力学稳定; 以及在所述多孔电子传导层上的多孔保护电绝缘涂层。 优选地,施加耐热金属的顶部涂层,其顶部涂层具有作为吸附剂的附加性能,该吸附剂相对于影响催化材料的毒素。