Temperature Measurement of Premixed Fuel-Air Mixture by an Infrared Radiation Pyrometer : 1st Report, Accuracy of the Infrared Radiation Pyrometer

概要

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The temperature history of a fuel air mixture prior to the start of combustion at the end of compression stroke in an engine is to be studied with the use of an infrared radiation pyrometer.In this report, the functions of the pyrometer were studied analytically to improve the overall accuracy of the pyrometer, and the results of improvements were shown. It is found that the overall accuracy of ±1% will be attained when the signal from the infrared radiation detector is measured within the accuracy of ±5%. Several improvements were made following the conclusions of the analysis, and an overall accuracy of ±3℃ was achieved over the range of 200〜500℃ of the gas temperature. The influence of the initial states of the gas and that of an optical window were analyzed, and the diagrams to correct them were shown.
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