1110 内燃機関の排気を模擬した脈動場におけるピトー管式流量計の非定常特性(GS-2,5 計測,研究発表講演)

概要

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Measurement of mass emission of exhaust gas needs measurement of flow rate and concentration. In case, exhaust gas flow rate and concentration of gasoline-fueled vehicle is measured directly at tail pipe, concentration can be measured accuracy. But it is known that while in the measurement of flow rate, the error arises in pulsating flow with reverse flow at idling condition. By the research of last year, it has been understood that the error of measurement doesn't depend on a size of the amplitude alone by flow rate measurement of air pulsating flow using pitot tube flowmeter. In this study, Flow rate of air pulsating flow is measured with changing connecting pipe length of differential presser transmitter, and comparison of flow rate with flow behavior of detector surroundings by visualization.
社団法人日本機械学会の論文
2005-03-18