2220 自動車用ガス燃料インジェクタの瞬間流量計測(J16-2 燃料多様化と燃焼・化学反応制御(2),ジョイントセッション,21世紀地球環境革命の機械工学:人・マイクロナノ・エネルギー・環境)

概要

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Accuracy of an injection rate measurement of a gaseous fuel injector was improved by modification of flow modeling and static pressure correction. A port fuel injection gaseous fuel injector was used. The injection pressure was set at 255 kPa(g), and the injection duration was varied from 5 to 20 ms. Nitrogen gas was used as the test gas. The test gas was injected into a pipe from the injector, and the static pressure history was acquired with a piezoelectronic pressure transducer. One-dimensional, compressible, inviscid, adiabatic flow was assumed, and the instantaneous mass flow rate inside the pipe was estimated using newly modified equations. By integrating the injection rate during the injection duration, the total amount of mass flow per one stroke was calculated. The data obtained by the injection rate meter are compared to that of the calibration test, and it is shown that the injection rate measurement was carried out within the error of 2 to 3 %.
社団法人日本機械学会の論文
2008-08-02