A Method of Measuring the Exhaust-Gas Energy Available to Turbocharging of a Diesel Engine

The measurement of the exhaust-gas energy is essential for the design of turbochargers. However, its direct measurement is next to impossible. The present authors have divised a simple method for this purpose. A part of the exhaust gas is extracted to expand to the atmosphere through a small measuri...

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Published inNippon Kikai Gakkai Rombunshū Vol. 25; no. 152; pp. 309 - 313
Main Authors NAGAO, Fujio, SHIMAMOTO, Yuzuru, OBAYASHI, Hidehiko
Format Journal Article
LanguageJapanese
Published The Japan Society of Mechanical Engineers 1959
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ISSN0029-0270
2185-9485
DOI10.1299/kikai1938.25.309

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Summary:The measurement of the exhaust-gas energy is essential for the design of turbochargers. However, its direct measurement is next to impossible. The present authors have divised a simple method for this purpose. A part of the exhaust gas is extracted to expand to the atmosphere through a small measuring nozzle similar to the turbine nozzle. The momentum of the extracted gas is measured by the thrust on the cage, made up with piles of aluminum rings and a disc lined with wire gauzes, and the flow rate through an orifice. Thus the average ejecting velocity from the nozzle can be calculated. It was confirmed that the exhaust-gas energy can be measured with tolerable accuracy by the above mentioned method.
ISSN:0029-0270
2185-9485
DOI:10.1299/kikai1938.25.309