副室付火花点火機関の燃焼特性 : 水平副室の場合

概要

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To understand the mechanism of torch-combustion process in a spark ignition engine, a single cylinder four stroke-cycle engine equipped with a horizontal prechamber was used to measure the combustion characteristics and the engine performances, changing paramenters such as the sectional area of torch nozzle, prechamber volume and air-fuel ratio, while keeping the volumetric efficiency and engine speed constant. Accordingly, these parameters are found to affect considerably on such combustion characteristics as the ignition delay, the combustion period, the heat release rate and the mass burned fraction which are derived analytically from several typical pressure diagrams. In addition, the relationship between the above combustion characteristics and the engine performances is examined in detail, with the aid of the flame propagation in both combustion chambers measured by the ion current method and the torch flame pattern on the piston head visualized by the oil film technique.
東海大学の論文