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    Systems for monitoring the composition of exhaust gases
    1.
    发明授权
    Systems for monitoring the composition of exhaust gases 失效
    用于监测废气组成的系统

    公开(公告)号：US4057996A

    公开(公告)日：1977-11-15

    申请号：US647983

    申请日：1976-01-08

    申请人： Jack Graham Firth ,  Thomas Alwyn Jones ,  Brenda Rimmington

    发明人： Jack Graham Firth ,  Thomas Alwyn Jones ,  Brenda Rimmington

    IPC分类号： F02B1/04 ,  F02D41/14 ,  G01N27/12

    CPC分类号： F02D41/1455 ,  G01N27/12 ,  F02B1/04

    摘要： In a system for monitoring the composition of exhaust gases from an internal combustion engine, a gas-sensitive resistor consisting of gallium oxide is exposed to the gases and is maintained at a substantially constant temperature above that of the gases. A signal is generated dependent on the resistance of the resistor, which varies monotonically with the air/fuel ratio of the inlet mixture, this signal being usable in a system for automatically controlling the composition of the inlet mixture.

    摘要翻译： 在用于监测来自内燃机的废气的组成的系统中，由氧化镓组成的气敏电阻器暴露于气体并保持在高于气体的基本上恒定的温度。 根据电阻器的电阻产生信号，该电阻器与入口混合物的空气/燃料比单调变化，该信号可用于自动控制入口混合物的组成的系统中。

    Detection of carbon monoxide
    2.
    发明授权
    Detection of carbon monoxide 失效
    检测一氧化碳

    公开(公告)号：US4036592A

    公开(公告)日：1977-07-19

    申请号：US581697

    申请日：1975-05-28

    申请人： David Keith Brown ,  David William Dabill ,  Jack Graham Firth ,  Alan Jones ,  Thomas Alwyn Jones

    发明人： David Keith Brown ,  David William Dabill ,  Jack Graham Firth ,  Alan Jones ,  Thomas Alwyn Jones

    IPC分类号： G01N27/16 ,  G01N31/12 ,  H01C3/00

    CPC分类号： G01N27/16 ,  Y10T436/204998

    摘要： In a catalytic method for selectively detecting carbon monoxide in the presence of hydrogen in an oxygen-containing atmosphere, such as may be used in monitoring exhaust gases from combustion processes, the catalyst is a platinum-rhodium alloy containing not less than about 10% rhodium. The catalyst is maintained at a temperature such that it will cause combustion of carbon monoxide but will not readily cause combustion of hydrogen, the thermal effect on the catalyst resulting when a test atmosphere is brought into contact with it being sensed to provide a measure of the carbon monoxide concentration in that atmosphere.

    摘要翻译： 在用于在含氧气氛中的氢存在下选择性地检测一氧化碳的催化方法，例如可用于监测来自燃烧过程的废气，催化剂是含有不少于约10％铑的铂 - 铑合金 。 催化剂保持在这样的温度，使得它将引起一氧化碳的燃烧，但不会容易地引起氢的燃烧，当感测到测试气氛与其接触时，对催化剂的热效应被提供 该气氛中的一氧化碳浓度。