Sensor for determining carbon monoxide
    1.
    发明授权
    Sensor for determining carbon monoxide 失效
    用于确定一氧化碳的传感器

    公开(公告)号:US5351029A

    公开(公告)日:1994-09-27

    申请号:US78291

    申请日:1993-06-22

    IPC分类号: G01N27/12 G01N33/00 H01C7/00

    CPC分类号: G01N27/12 G01N33/004

    摘要: The invention relates to a sensor for the determination of carbon monoxide, especially in gas mixtures containing oxygen, on the basis of doped metal oxides whose electric conductivity is a function of the composition of the gas mixtures. Suitable metal oxides are those having n-type conductivity, the dopants used being other oxides of a metal having a maximum valency

    摘要翻译: PCT No.PCT / DE91 / 00986 Sec。 371日期:1993年6月22日 102(e)日期1993年6月22日PCT 1991年12月18日PCT PCT。 出版物WO92 / 13270 PCT 本发明涉及用于测定一氧化碳,特别是含氧气体混合物的传感器,其基于掺杂的金属氧化物,其电导率是气体混合物组成的函数。 合适的金属氧化物是具有n型导电性的金属氧化物,所用掺杂剂是最高价值<4的金属的其它氧化物; 催化一氧化碳与氧反应的金属的氧化物得到二氧化碳,其量为0.01至0.2mol%; 和0.001〜0.1摩尔%的元素周期表第5族的金属的氧化物。 传感器具有较小的电阻温度系数,具有高灵敏度和低滞后特性。

    Internal combustion engine exhaust gas monitoring system
    2.
    发明授权
    Internal combustion engine exhaust gas monitoring system 失效
    内燃机废气监测系统

    公开(公告)号:US4194471A

    公开(公告)日:1980-03-25

    申请号:US882177

    申请日:1978-02-28

    申请人: Detlef Baresel

    发明人: Detlef Baresel

    摘要: To detect substantial deviation of operation of the engine with fuel-air mixtures from stoichiometric relationships, particularly extended operation under very lean or enriched supply mixtures, the exhaust gases are conducted past a first sensor which provides a clearly defined voltage jump upon change of the exhaust gases between reducing and oxidizing state; and, additionally, to a second exhaust gas sensor and preferably to a third sensor, the second and third sensors being, respectively, responsive to the oxygen level in the exhaust gases and to the CO (or hydrocarbon) level in the exhaust gases, respectively, and additionally modifying the relative proportion of fuel and air of the mixture being fed to the engine.

    摘要翻译: 为了检测燃料 - 空气混合物与化学计量关系的发动机的运行的实质偏差,特别是在非常贫或富集供应混合物下的延长操作,排气通过第一传感器,第一传感器在排气变化时提供明确限定的电压跳跃 还原和氧化状态之间的气体; 另外,第二和第三传感器分别响应于废气中的氧气含量和废气中的CO(或烃)水平,而对第二废气传感器和第二废气传感器, 并且另外改变供给到发动机的混合物的燃料和空气的相对比例。

    Method of treating vehicle exhaust gas and catalyst used therein
    3.
    发明授权
    Method of treating vehicle exhaust gas and catalyst used therein 失效
    汽车尾气处理方法及其中使用的催化剂

    公开(公告)号:US4140749A

    公开(公告)日:1979-02-20

    申请号:US804623

    申请日:1977-06-08

    摘要: The present invention provides a catalyst for converting the noxous CO, NO.sub.x and hydrocarbons found in the exhaust gases from internal combustion engines into less harmful gases, and to the method of treating said exhaust gases. The catalyst consists essentially of a solid solution of Fe.sub.2 O.sub.3, Cr.sub.2 O.sub.3, and Fe.sub.3 O.sub.4. The catalyst may be extended on a porous carrier such as aluminum oxide or aluminum silicate. The catalyst is particularly suited for treating the exhaust gas from internal combustion engines of motor vehicles.

    摘要翻译: 本发明提供了一种用于将来自内燃机的废气中发现的有毒CO,NO x和烃的转化为较少有害气体的催化剂,以及用于处理所述废气的方法。 该催化剂基本上由Fe 2 O 3,Cr 2 O 3和Fe 3 O 4的固溶体组成。 催化剂可以在诸如氧化铝或硅酸铝的多孔载体上延伸。 该催化剂特别适用于处理来自机动车辆的内燃机的废气。

    Method for determining small quantities of carbon monoxide and nitrogen
oxides in gaseous mixtures
    4.
    发明授权
    Method for determining small quantities of carbon monoxide and nitrogen oxides in gaseous mixtures 失效
    在气体混合物中测定少量一氧化碳和氮氧化物的方法

    公开(公告)号:US5503000A

    公开(公告)日:1996-04-02

    申请号:US244262

    申请日:1994-05-20

    摘要: The invention relates to a method for determining small quantities of carbon monoxide and nitrogen oxides in gaseous mixtures containing oxygen with the aid of a sensor whose electrical resistance changes at a higher temperature with the carbon monoxide and nitrogen oxide concentrations. It makes use of the fact that, with suitable sensors, on the one hand the resistance-temperature curve of the one of the gases to be determined is clearly different from that of the reference mixture over a broad temperature range (gaseous mixture without the two gases to be determined) and, on the other hand, the resistance-temperature curves of the two gases to be determined approach one another in one part of this temperature range, or coincide, and maintain a clear distance from one another in another part of this temperature range.

    摘要翻译: PCT No.PCT / DE92 / 00958 Sec。 371日期1994年5月20日 102(e)日期1994年5月20日PCT 1997年11月17日PCT公布。 出版物WO93 / 10441 日期:1993年5月27日。本发明涉及一种用一氧化碳和氮氧化物浓度在较高温度下电阻变化的传感器测定含氧气体混合物中的少量一氧化碳和氮氧化物的方法。 它利用以下事实:一方面,在适当的传感器中,要确定的一种气体的电阻 - 温度曲线在宽温度范围内与参考混合物的电阻 - 温度曲线明显不同(没有两个气体混合物 另一方面,要确定的两种气体的电阻 - 温度曲线在该温度范围的一部分中彼此接近或重合,并且在另一部分中保持彼此之间的清晰距离 这个温度范围。

    Zeolites as specific adsorbents for NO.sub.X and CO
    5.
    发明授权
    Zeolites as specific adsorbents for NO.sub.X and CO 失效
    沸石作为NOX和CO的特定吸附剂

    公开(公告)号:US4944273A

    公开(公告)日:1990-07-31

    申请号:US313621

    申请日:1989-02-21

    CPC分类号: B01J20/186

    摘要: The use of zeolites rich in silicic acids having an Si:Al ratio of 1:1 to 100:1 as specific adsorbents for NO.sub.X or CO is proposed. Because of their property of specifically adsorbing NO.sub.X or CO, these zeolites, in particular those zeolites doped with such metals as Ca, Co, Ni, Fe, Cu, Ag, Pt or Ru, and having the above mentioned ratio of Si to Al, are especially suitable for the production of specific NO.sub.X or CO sensors based on semiconductors. Such sensors can be used as sensors for exhaust gases of automotive vehicles, for example.

    摘要翻译: 提出使用富含Si:Al比为1:1〜100:1的硅酸的沸石作为NOX或CO的特定吸附剂。 由于它们特异性吸附NO x或CO的性质,这些沸石,特别是掺杂有诸如Ca,Co,Ni,Fe,Cu,Ag,Pt或Ru的金属的沸石,并具有上述Si与Al的比例, 特别适用于生产基于半导体的特定NOX或CO传感器。 例如,这种传感器可以用作汽车尾气的传感器。

    Sintered metal oxide semiconductor having electrical conductivity highly
sensitive to oxygen partial pressure
    6.
    发明授权
    Sintered metal oxide semiconductor having electrical conductivity highly sensitive to oxygen partial pressure 失效
    具有对氧分压高度敏感的导电性的烧结金属氧化物半导体

    公开(公告)号:US4194994A

    公开(公告)日:1980-03-25

    申请号:US845796

    申请日:1977-10-26

    IPC分类号: G01N27/12 H01B1/08

    CPC分类号: G01N27/12 Y10T436/208339

    摘要: Tin oxide doped with magnesium oxide or niobium pentoxide and prepared as a sintered material is found to be highly sensitive to oxygen partial pressure both in the presence of free oxygen and in the presence of oxidizable gases, such as carbon monoxide or the lower oxides of nitrogen, and even in the presence of mixtures of both, such as in the exhaust gas of an internal combustion engine. The electrical conductivity varies by substantially more than an order of magnitude in response to a change in the oxygen partial pressure of about one-half an order of magnitude. The doped oxides operate as poor catalysts for the oxidation of oxidizable components of the exhaust gases. Chromium oxide doped with tin oxide shows the effect of an excessively good catalysis from the point of view of range of measurement, but is usable to give a sharp indication of the appearance or disappearance of free oxygen in a gas mixture. Zinc oxide doped with aluminum oxide has a conductivity that is good for measuring the content of free oxygen, but is of questionable value in the presence of a substantial concentration of carbon monoxide.

    摘要翻译: 发现掺杂有氧化镁或五氧化二铌的氧化锡作为烧结材料,在游离氧的存在下和在可氧化气体如一氧化碳或氮的低氧化物存在下对氧气分压非常敏感 ,甚至在二者的混合物的存在下,例如在内燃机的废气中。 响应于氧分压的变化约为一个数量级,电导率基本上大大地改变一个数量级。 掺杂的氧化物作为用于氧化废气的可氧化组分的不良催化剂起作用。 掺杂有氧化锡的氧化铬从测量范围的观点来看显示出过度的催化效果,但可用于给出气体混合物中游离氧的外观或消失的清晰指示。 掺有氧化铝的氧化锌具有良好的测量游离氧含量的电导率,但在存在大量一氧化碳的情况下是有价值的。

    Hot gas sensor device with improved thermal isolation from carrier plate
    8.
    发明授权
    Hot gas sensor device with improved thermal isolation from carrier plate 失效
    热载体传感器装置,具有改进的载体板的热隔离

    公开(公告)号:US5211053A

    公开(公告)日:1993-05-18

    申请号:US838545

    申请日:1992-02-19

    IPC分类号: G01N27/04 G01N27/12

    CPC分类号: G01N27/12

    摘要: A gas sensor device has a carrier plate of ceramic or glass. The carrier has apertures which leave only strips in a spiral configuration connecting a middle region of the carrier to the outer region thereof. The apertures may be mere slits separating the connection strips or they may be apertures providing larger air gaps. On each middle region so provided on the carrier a sensor element is located that has two electrodes and a sensitive layer which establishes a conducting connection between the electrodes. The electrodes and the sensitive layer are directly applied to the upper surface of the middle region. The two electrodes are comb shaped and are placed in inter-digital configuration to define a meandering gap between them. On the underside of the middle region of the carrier a heating element for the sensor element is provided and, if desired, also a temperature measuring resistance for regulating the temperature produced by a heating resistor. Conducting paths are located on the connecting strips between the middle region and the outer region of the carrier for connecting a sensor element and its heater to circuits on the outer region of the carrier plate.

    摘要翻译: 气体传感器装置具有陶瓷或玻璃的载体板。 载体具有孔,其仅将带状物以螺旋形状连接,该螺旋构造将载体的中间区域连接到其外部区域。 孔可以仅仅是分开连接条的狭缝,或者它们可以是提供更大气隙的孔。 在载体上设置的每个中间区域上,传感器元件被定位成具有两个电极和一个在电极之间建立导电连接的敏感层。 电极和敏感层直接施加到中间区域的上表面。 两个电极是梳状的,并且被放置在数字间配置中以限定它们之间的曲折间隙。 在载体的中间区域的下侧设置用于传感器元件的加热元件,并且如果需要,还提供用于调节由加热电阻器产生的温度的温度测量电阻。 导电路径位于载体的中间区域和外部区域之间的连接条上,用于将传感器元件及其加热器连接到承载板的外部区域上的电路。

    Ignition device with lowered ignition temperature
    9.
    发明授权
    Ignition device with lowered ignition temperature 失效
    点火装置点火温度降低

    公开(公告)号:US4972811A

    公开(公告)日:1990-11-27

    申请号:US397489

    申请日:1989-08-04

    摘要: An ignition system comprising one of a glow plug, spark plug and glow attachment having metal or ceramic surfaces which are exposed to a fuel/air mixtuer, and are at least partially covered with a coating comprising at least one complex metal oxide obtained as a result of a reaction of a basic oxide selected from a group comprising oxides of Si, Y, La and Ce and mixed oxides of the above-mentioned oxides with Al.sub.2 O.sub.3, with at least one further oxide selected from a group comprising oxides of alkali and alkali earth metals.

    摘要翻译: PCT No.PCT / DE87 / 00572 Sec。 371日期1989年8月4日 102(e)日期1989年8月4日PCT提交1987年12月4日PCT公布。 出版物WO88 / 06680 日期:1988年9月7日。一种点火系统,包括电热塞,火花塞和辉光附件中的一种,其具有暴露于燃料/空气混合器的金属或陶瓷表面,并且至少部分地覆盖有包括至少一个 作为由选自Si,Y,La和Ce的氧化物的基本氧化物和上述氧化物与Al 2 O 3的混合氧化物的碱性氧化物与至少一种选自以下的氧化物反应得到的复合金属氧化物: 包括碱金属和碱土金属的氧化物。