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    • 3. 发明申请
    • SEALING ELEMENT FOR SENSORS, AND MANUFACTURING PROCESS
    • 密封元件传感器及其制造方法
    • WO1998015819A1
    • 1998-04-16
    • PCT/DE1997002012
    • 1997-09-10
    • ROBERT BOSCH GMBHFRIESE, Karl-HermannWEYL, HelmutWIEDENMANN, Hans-MartinHANS, Anton
    • ROBERT BOSCH GMBH
    • G01N27/407
    • G01N27/407
    • Disclosed is an electrochemical sensor (10) intended to determine the gas contents in oxygen, including with regard to exhaust gas in internal combustion engines. It ressembles a solid electrolytic body (29) placed in a housing (11) with a sealing ring (21) consisting of various metal layers, the arrangement of which goes from a metal bearing (23) made of an alloy steel. Said bearing (23) is coated on both sides with an aluminium layer (24). One of the aluminium layers (24) can be covered with an additional metal layer (25). During a heat treatment, prior to or after the insertion process, part of the aluminium layer (24) forms with the bearing (23) a Fe-Al alloy with ceramics properties. The aluminium layer (24) surface is oxidised, thereby forming an aluminium oxide layer. Applying an additional metal layer to the aluminium layer results in a mixed oxide layer.
    • 它提出了一种用于确定气体的氧含量,尤其是用于确定在内燃机的废气中的氧气含量的电化学传感器(10),其具有被插入在一个壳体(11)的密封环(21)一种固体电解质体(29)。 密封环(21)是由不同的金属层。 这些金属层的排列是基于金属支撑(23)由钢合金制成。 该支撑(23)涂覆有铝层(24)的两个环形表面上。 一铝层(24)可通过在添加另外的金属层(25)覆盖。 在接合过程之前或之后进行热处理,铝层(24)由具有陶瓷性质的Fe-Al合金的支撑件(23)的一部分。 铝层(24)的表面被氧化,从而形成氧化铝层。 在铝层上的另外施加的金属层的情况下具有形成的混合氧化物层。
    • 5. 发明申请
    • LIMITING-CURRENT SENSOR FOR THE DETERMINATION OF THE LAMBDA-VALUE OF A GAS MIXTURE
    • 横流传感器,用于确定λ值混合气体中
    • WO1995015491A1
    • 1995-06-08
    • PCT/DE1994001388
    • 1994-11-24
    • ROBERT BOSCH GMBHFRIESE, Karl-HermannGRUENWALD, Werner
    • ROBERT BOSCH GMBH
    • G01N27/419
    • G01N27/419
    • Proposed is a limiting-current sensor for determining the lambda-value of gas mixtures, in particular the exhaust gases from internal-combustion engines. The sensor has, mounted on an oxygen-ion-conducting solid electrolyte, a first electrolytic pump cell (14) and a second electrolytic pump cell (15), each having a first cathode (12) and a second cathode (13) which are exposed to the gas to be analysed in a diffusion barrier (20). The pump cells (14 and 15) are designed in such a way that, at the same external oxygen concentration, different pump currents (IP) are established so that, at an oxygen concentration which is at least near that of a stoichiometric gas mixture ( lambda = 1), the pump cell (14) with the higher current (IP) is activated while, at an oxygen concentration outside this range, the pump cell (15) with the lower current (IP) is operating. To this end, the cathodes (12, 13) are located, spaced apart, with different diffusion paths l1 and l2 along the diffusion barrier (20), the first cathode (12) of the pump cell (14) which is operating when the gas mixture is near-stoichiometric ( lambda = 1) having a shorter diffusion path (l1) than the second cathode (13) of the other pump cell (15).
    • 它提出了一种用于确定在气体混合物中的λ值,特别是在内燃机的废气的限制电流传感器。 限制电流传感器已经上的氧离子导电性Festelektroeyt布置在第一抽运单元(14)和第二泵单元(15),每个通孔的扩散路径具有测量气体(20)(暴露的第一阴极(12)和第二阴极(13),该泵单元(14 和15)被设计为使得对于相同的外部的氧浓度不同的泵电流设定IP,使得(在氧气浓度以化学计量的气体混合物的λ= 1),所述泵送单元(14附近至少)可与较高的泵浦电流IP被激活,而 在此范围之外,所述泵单元(15)在操作中的下泵浦电流(IP)的氧浓度。为了这个目的,在扩散阻挡层(20)的阴极(12,13)隔开,每个具有不同的扩散路径(L1)和(L2)被布置 其中,所述泵单元(14)的阴极(12),其(在化学计量的气体混合物的附近 拉姆达= 1)是在操作中,更短的扩散路径(L1)作为其他抽运单元(15)的阴极(13)。
    • 8. 发明申请
    • NTC TEMPERATURE-SENSING DEVICE AND PROCESS FOR PRODUCING NTC TEMPERATURE-SENSING ELEMENTS
    • NTC温度传感装置及生产NTC温度传感元件的工艺
    • WO1989003115A1
    • 1989-04-06
    • PCT/DE1988000528
    • 1988-08-30
    • ROBERT BOSCH GMBHFRIESE, Karl-HermannSTECHER, GüntherWIEDENMANN, Hans-Martin
    • ROBERT BOSCH GMBH
    • H01C07/04
    • H01C7/043G01K7/223G01N27/4067
    • NTC temperature-sensing device and process for producing NTC temperature-sensing elements for NTC temperature-sensing devices made of ceramic foil. Said elements are designed to allow the ambient air or oxygen, added by electrolytic pumping, free access to the NTC resistor over a laminate compound canal that can be filled with porous material, while the NTC resistor itself is hermetically insulated from the measuirng gas. The device can be made from solid electrolyte foil conducting O ions and foils based on Al2O3. Particular features of these NTC temperature-sensing elements are: a characteristic curve of the NTC resistor which does not vary with the composition of the measuring gas; their durability, quick response, simple production technique and small dimensions (which make them particularly suited for mounting in very narrow casings), as well as the electrically insulated leads, which make the device free from external voltage.
    • NTC温度感测装置和用于生产NTC温度传感元件的工艺,用于由陶瓷箔制成的NTC温度感测装置。 所述元件被设计成允许通过电解泵送加入的环境空气或氧气通过可以填充多孔材料的层压复合管道自由进入NTC电阻器,而NTC电阻器本身与测量气体气密绝缘。 该装置可以由固体电解质箔导电O 2-离子和基于Al2O3的箔制成。 这些NTC温度感测元件的特征是:NTC电阻器的特性曲线不随测量气体的组成而变化; 其耐用性,响应速度快,生产工艺简单,尺寸小(使其特别适合安装在非常窄的外壳中)以及电绝缘引线,使器件免受外部电压的影响。