:(Second Paper: The required time concerning to the combustion processes)

概要

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This paper presents some experimental results of the required time concerning to the combustion processes in diesel engines such as the illumination delay and the ignition delay. The experiments were carried out using a constant volume combustion chamber in the range of the initial pressure ρo up to 73 kgf/cm2, the initial temperature To up to 806K and the oxygen concentration φ up to 1.0. So called"ignition delay"is classified into heat release delay, illumination delay τi, pressure rise delay and ignition delay τid .In the range of higher initial temperature, the empirical relationships between the delays (τi, τid), and initial pressure ρo, initial temperature To and oxygen concentration φ can be presented the following form: τi=Apn0∅exp(B/T0), τid=A′pn′0∅c′exp(B/T0). In the range of ρo above 40 kgf/cm2, it is remarkable that ρo has no influence on τi and τid, that is, n and n' are almost zero.
公益社団法人日本マリンエンジニアリング学会の論文