On-line Instantaneous Mass Flow Rate Measurements Through Injection Nozzles of Internal Combustion Engines(Measurement)

概要

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In the present paper a method to measure the instantaneous mass flow rates of fuel passing through fast operating injection nozzles is described. The flow rate information is deduced from instantaneous pressure gradient measurements. Through a Fourier transformation Fourier-coefficients of the pressure gradient are determined, which are used for the calculation of the transient mass flow rate of fuel through injection nozzles, utilizing a special reconstruction algorithm. In the paper the theoretical background of the measuring method is provided and the entire development work is summarized as car-ried out by the authors to yield a practically applicable measuring system. The latter is used for verification experiments providing time resolved flow rates for a magnetically driven injection valve operating at a pressure of approximately 6 bars. The authors stress that on-line measurements of the injection mass flow rates can be presented with their developed measuring system.
一般社団法人日本機械学会の論文
2005-10-05