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    An internal combustion engine, an engine crankcase gas blow-by sensor and a method of evaluating performance of an internal combustion engine
    3.
    发明公开
    An internal combustion engine, an engine crankcase gas blow-by sensor and a method of evaluating performance of an internal combustion engine 失效
    内燃发动机，Durchblasgassensor以及用于评估内燃发动机的功率的方法

    公开(公告)号：EP0777041A2

    公开(公告)日：1997-06-04

    申请号：EP96308618.6

    申请日：1996-11-28

    申请人： CUMMINS ENGINE COMPANY, INC.

    发明人： Schneider, Matthew L. ,  Bhagwat, Abhay P. ,  Schuppe, Alfred ,  Kuhns, George M.

    IPC分类号： F02B77/08 ,  F01M11/10 ,  F01M13/00

    CPC分类号： F01M13/00 ,  F01M11/10 ,  F02B3/06 ,  F02B77/085

    摘要： In a closed crankcase ventilation system, crankcase gases are allowed to flow through a venturi (10) which includes high pressure and low pressure taps (24 and 28). The high and low pressure taps (24) and (28) are coupled to a differential pressure transducer (30) which produces an output that is proportional to the volumetric flow of crankcase gases through the venturi (10). The use of a venturi (10) in conjunction with a differential pressure sensor (30) offers a low resistance path for the flow of crankcase gases and allows continuous monitoring of blow-by without exceeding the operating pressure limitations of various oil seals. Such a sensor (30) is particularly suited for closed crankcase ventilation (ccv) systems, as it doesn't require venting of crankcase gases to the atmosphere, but works well in open crankcase ventilation systems also.

    摘要翻译： 在封闭的曲轴箱通风系统中，曲轴箱气体被允许通过文丘里管（10），其包括高压及低压接头（24和28）中流动。 在高压和低压抽头（24）和（28）被耦合到一个压差传感器（30），在输出端产生正比于做曲轴箱气体通过文丘里（10）的体积流量。 使用与差压传感器（30）组合，文丘里管（10）的提供的低电阻路径为曲轴箱气体的流动，并允许窜漏的连续监测，而不超过各种油封的操作压力的限制。 这样的传感器（30），特别适合于封闭的曲轴箱通风（CCV）系统，因为它不要求曲轴箱气体到大气中的排气，但在开放的曲轴箱通风系统，使效果很好。