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    • 2. 发明申请
    • NOx Gas Sensor Method and Device
    • NOx气体传感器方法和装置
    • US20080017510A1
    • 2008-01-24
    • US11748466
    • 2007-05-14
    • Balakrishnan NairJesse NachlasMichael Middlemas
    • Balakrishnan NairJesse NachlasMichael Middlemas
    • G01N27/26
    • G01N27/4074G01N33/0013
    • The present invention is an apparatus for determining NOx concentration of an exhaust gas stream. The apparatus may include an input assembly capable of receiving the exhaust gas and producing a conditioned output gas. The input assembly includes an oxidizing catalyst structure for oxidizing unburned hydrocarbons and gases to higher oxidation states and an equilibrium structure for establishing a steady state equilibrium concentration ratio between NO and NO2, said NO2 concentration between about 0% an about 10% by volume. The apparatus also includes a NOx sensor operably connected to the input assembly for receiving the conditioned output gas of the input assembly. The apparatus also includes an oxygen sensor in operable communication with the NOx sensor, such that the concentration of the NOx present in the exhaust gas can be determined.
    • 本发明是一种用于确定废气流的NO x浓度的装置。 该装置可以包括能够接收废气并产生经调节的输出气体的输入组件。 输入组件包括用于将未燃烧的烃和气体氧化成更高氧化态的氧化催化剂结构和用于建立NO和NO 2 2之间的稳态平衡浓度比的平衡结构, / SUB>浓度在约0%至约10体积%之间。 该装置还包括可操作地连接到输入组件的NO x传感器,用于接收输入组件的经调节的输出气体。 该装置还包括氧传感器,其与NO x传感器可操作地连通,使得可以确定废气中存在的NO x浓度。
    • 3. 发明授权
    • Nox gas sensor method and device
    • Nox气体传感器的方法和装置
    • US07217355B2
    • 2007-05-15
    • US11137693
    • 2005-05-25
    • Balakrishnan G. NairJesse A. NachlasMichael Middlemas
    • Balakrishnan G. NairJesse A. NachlasMichael Middlemas
    • G01N27/407
    • G01N27/4074G01N33/0013G01N33/0037Y02A50/245
    • The present invention is a method and apparatus for measuring the total NOx concentration in a gas stream utilizing the principles of a NOx sensor, i.e., mixed potential sensor. The exhaust gas is first conditioned by a catalyst assembly that converts the various species of nitrogen oxide gases present to a fixed steady state concentration ratio of NO2/NO, where NO2 is approximately 0–10% of the total NOx concentration present in the gas exhaust, thereby enabling the NOx sensor to generate a meaningful and reproducible determination of the concentration of total NOx present in the gas being measured. The catalyst assembly also functions to oxidize any unburned combustibles such as CH4, CO, etc., and remove potential contaminants such as SO2.
    • 本发明是一种利用NO x传感器即混合电位传感器的原理测量气流中总NO x浓度的方法和装置。 废气首先由催化剂组件调节,该催化剂组件将存在的各种氮氧化物气体转化为固定的NO 2 NO 2 / NO的稳态浓度比,其中NO 2 是气体排气中存在的总NO x x浓度的约0-10%,从而使得NO x传感器能够产生有意义且可重现的总浓度的确定 存在于待测气体中的NO x。 催化剂组合物还用于氧化任何未燃烧的可燃物如CH 4,CO等,并除去潜在的污染物如SO 2。
    • 7. 发明申请
    • NOx gas sensor method and device
    • NOx气体传感器的方法和装置
    • US20060027465A1
    • 2006-02-09
    • US11137693
    • 2005-05-25
    • Balakrishnan NairJesse NachlasMichael Middlemas
    • Balakrishnan NairJesse NachlasMichael Middlemas
    • G01N27/26
    • G01N27/4074G01N33/0013G01N33/0037Y02A50/245
    • The present invention is a method and apparatus for measuring the total NOx concentration in a gas stream utilizing the principles of a NOx sensor, i.e., mixed potential sensor. The exhaust gas is first conditioned by a catalyst assembly that converts the various species of nitrogen oxide gases present to a fixed steady state concentration ratio of NO2/NO, where NO2 is approximately 0-10% of the total NOx concentration present in the gas exhaust, thereby enabling the NOx sensor to generate a meaningful and reproducible determination of the concentration of total NOx present in the gas being measured. The catalyst assembly also functions to oxidize any unburned combustibles such as CH4, CO, etc., and remove potential contaminants such as SO2.
    • 本发明是一种利用NO x传感器即混合电位传感器的原理测量气流中总NO x浓度的方法和装置。 废气首先由催化剂组件调节,该催化剂组件将存在的各种氮氧化物气体转化为固定的NO 2 NO 2 / NO的稳态浓度比,其中NO 2 是气体排气中存在的总NO x x浓度的约0-10%,从而使得NO x传感器能够产生有意义且可重现的总浓度的确定 存在于待测气体中的NO x。 催化剂组合物还用于氧化任何未燃烧的可燃物如CH 4,CO等,并除去潜在的污染物如SO 2。