Method of measuring exhaust gas on internal combustion engines
    1.
    发明授权
    Method of measuring exhaust gas on internal combustion engines 失效
    内燃机排气测量方法

    公开(公告)号:US07334461B2

    公开(公告)日:2008-02-26

    申请号:US11499874

    申请日:2006-08-07

    IPC分类号: G01M15/00

    CPC分类号: G01M15/102 G01M15/106

    摘要: In a method of measuring exhaust gas of internal combustion engines, preferably in test benches, through the use of CVS (constant value sampling) full-flow systems, the exhaust gas of the internal combustion engine is mixed with combustion gas, preferably air, and the volume flow or mass flow of the combustion air is determined by the CVS full-flow system. This mass flow exceeds thereby the maximum quantity of combustion air needed by the internal combustion engine. An essentially constant and fully conditioned quantity of humidity-conditioned and/or temperature-conditioned combustion gas is fed into the internal combustion engine at any time, whereby this quantity is at least equal to the maximum quantity needed by the internal combustion engine, and whereby combustion gas not needed is fed into the CVS full-flow system, and a pre-determinable set pressure value is adjusted for the combustion gas upstream from the CVS full-flow system and also upstream from the point of conditioning of the combustion gas to be able to use the CVS full-flow systems increasing control dynamics without considerable effects on the entire control system and to avoid thereby dilution of the engine exhaust gases upstream from the CVS full-flow system. An essentially constant and fully conditioned quantity of humidity-conditioned and/or temperature-conditioned combustion gas can possibly be fed at any time into the CVS full-flow system, whereby fully conditioned combustion gas is drawn from the CVS full-flow system upstream from the mixing area to be used by the internal combustion engine.

    摘要翻译: 在通过使用CVS(恒定值取样)全流量系统来测量内燃机的废气优选在测试台中的方法中,内燃机的排气与燃烧气体,优选空气混合,以及 燃烧空气的体积流量或质量流量由CVS全流量系统确定。 该质量流超过内燃机所需的最大燃烧空气量。 在任何时间将基本上恒定且经过充分调节的调湿和/或温度调节的燃烧气体的量进料到内燃机中,由此该量至少等于内燃机所需的最大量, 不需要的燃烧气体被供给到CVS全流系统中,并且对于CVS全流系统上游的燃烧气体以及从燃烧气体调节点的上游调整预定的设定压力值 能够使用CVS全流量系统增加控制动力学,而不会对整个控制系统产生相当大的影响,并避免因此CVS全流量系统上游的发动机废气稀释。 可以随时将基本上恒定和完全调节的调湿和/或温度调节的燃烧气体的量进料到CVS全流系统中,从而从CVS全流系统中提取完全调节的燃烧气体 由内燃机使用的混合区域。

    Method of measuring exhaust gas on internal combustion engines
    2.
    发明申请
    Method of measuring exhaust gas on internal combustion engines 失效
    内燃机排气测量方法

    公开(公告)号:US20070033996A1

    公开(公告)日:2007-02-15

    申请号:US11499874

    申请日:2006-08-07

    IPC分类号: G01M15/00 G01L3/26

    CPC分类号: G01M15/102 G01M15/106

    摘要: In a method of measuring exhaust gas of internal combustion engines, preferably in test benches, through the use of CVS (constant value sampling) full-flow systems, the exhaust gas of the internal combustion engine is mixed with combustion gas, preferably air, and the volume flow or mass flow of the combustion air is determined by the CVS full-flow system. This mass flow exceeds thereby the maximum quantity of combustion air needed by the internal combustion engine. An essentially constant and fully conditioned quantity of humidity-conditioned and/or temperature-conditioned combustion gas is fed into the internal combustion engine at any time, whereby this quantity is at least equal to the maximum quantity needed by the internal combustion engine, and whereby combustion gas not needed is fed into the CVS full-flow system, and a pre-determinable set pressure value is adjusted for the combustion gas upstream from the CVS full-flow system and also upstream from the point of conditioning of the combustion gas to be able to use the CVS full-flow systems increasing control dynamics without considerable effects on the entire control system and to avoid thereby dilution of the engine exhaust gases upstream from the CVS full-flow system. An essentially constant and fully conditioned quantity of humidity-conditioned and/or temperature-conditioned combustion gas can possibly be fed at any time into the CVS full-flow system, whereby fully conditioned combustion gas is drawn from the CVS full-flow system upstream from the mixing area to be used by the internal combustion engine.

    摘要翻译: 在通过使用CVS(恒定值取样)全流量系统来测量内燃机的废气优选在测试台中的方法中,内燃机的排气与燃烧气体,优选空气混合,以及 燃烧空气的体积流量或质量流量由CVS全流量系统确定。 该质量流超过内燃机所需的最大燃烧空气量。 在任何时间将基本上恒定且经过充分调节的调湿和/或温度调节的燃烧气体的量进料到内燃机中,由此该量至少等于内燃机所需的最大量, 不需要的燃烧气体被供给到CVS全流系统中,并且对于CVS全流系统上游的燃烧气体以及从燃烧气体调节点的上游调整预定的设定压力值 能够使用CVS全流量系统增加控制动力学,而不会对整个控制系统产生相当大的影响,并避免因此CVS全流量系统上游的发动机废气稀释。 可以随时将基本上恒定和完全调节的调湿和/或温度调节的燃烧气体的量进料到CVS全流系统中,从而从CVS全流系统中提取完全调节的燃烧气体 由内燃机使用的混合区域。

    Method for supplying an internal combustion engine with conditioned combustion gas, device for carrying out said method, method for determining the quantities of pollutants in the exhaust gases of an internal combustion engine, and device for carrying out said method

    公开(公告)号:US07028539B2

    公开(公告)日:2006-04-18

    申请号:US10432393

    申请日:2001-11-22

    IPC分类号: G01L3/26 G01L5/13 G01M15/00

    摘要: The invention relates to a method for supplying an internal combustion engine with conditioned combustion gas, involving the supply of humidity and/or temperature-conditioned combustion gas. The aim of this method is to largely enable the combustion air to be reliably and constantly conditioned even in dynamic operating conditions. To this end, an essentially constant and fully conditioned quantity of combustion gas is provided at each instant, the quantity corresponding to at least the maximum quantity required by the respective internal combustion engine. The invention also relates to a method for determining the quantities of pollutants in the exhaust gases of an internal combustion engine by diluting the exhaust gases using a diluent gas of a known composition. In order to enable the exhaust gases to be diluted in a precisely defined manner, and thus to precisely determine the quantities of pollutants, simply and reliably, an essentially constant and fully conditioned quantity of humidity and/or temperature-conditioned combustion gas is supplied at each instant, the quantity corresponding to at least the maximum quantity required by the respective internal combustion engine, and the exhaust gases are diluted with the quantity of combustion gas which is not used by the internal combustion engine. The invention also relates to devices for carrying out the two methods cited, each comprising a supply line (15) to the internal combustion engine (1), for the humidity and/or temperature-conditioned combustion gas, at least one measuring point (30) for determining the concentration of pollutants, and a determination device (32, 33; 41, 42) for the flow of a gas, said determination device comprising a passage (15) for a diluent gas of a known composition. the devices are characterized in that the supply line or supply passage (15) is designed for at least the maximum quantity of combustion gas required by the respective internal combustion engine (1), and a suction pipe (2) which can be connected to the internal combustion engine (1) branches off from the supply line (15).