Method of modal mass analysis of exhaust gas from a motor vehicle
    1.
    发明授权
    Method of modal mass analysis of exhaust gas from a motor vehicle 失效
    汽车废气模态质量分析方法

    公开(公告)号:US4727746A

    公开(公告)日:1988-03-01

    申请号:US948037

    申请日:1986-12-31

    CPC分类号: G01M15/102 G01N1/38

    摘要: A method of measuring the quantity of an ingredient gas in the exhaust gas from a motor vehicle during each of a sequence of driving modes by measuring and storing in real time flow rate data Q.sub.E (t) representative of the flow rate of the exhaust gas at a succession of times during a driving mode, measuring and storing concentration data representative of the concentration of the ingredient gas in the exhaust gas during a time period delayed with respect to the time period of the driving mode in order to compensate for a time delay in correspondence between changes in flow rate and performing an interpolation method and either a data-compression or data-expansion method on the concentration data in order to obtain corrected concentration values C.sub.E (t) on a one-to-one basis in phase and magnitude to the flow rate data, and determining the quantity M(t) of the ingredient gas in the exhaust gas for each of the measurements of flow rate based on the operational equation M(t)=.rho..times.C.sub.E (t).times.Q.sub.e (t), wherein .rho. is the density of the ingredient gas.

    摘要翻译: 一种在一系列驾驶模式中测量来自机动车辆的废气中的成分气体的量的方法,其通过以下方式测量和存储表示废气的流量的实时流量数据QE(t) 在驱动模式期间连续一次,在相对于驾驶模式的时间段延迟的时间段内测量和存储表示排气中的成分气体的浓度的浓度数据,以补偿在时间上的延迟 对流量的变化之间的对应关系以及对浓度数据执行内插方法和数据压缩或数据扩展方法之间的对应关系,以获得相位和大小的一对一的校正浓度值CE(t) 根据运算方程M(t)= rho xCE(t)xQe(t),对每个流量测量值确定废气中成分气体的量M(t) ,其中rho是成分气体的密度。