光ファイバ・レーザ流速計による2サイクル機関の吸入流れ特性に関する研究

概要

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This paper describes measurement and analysis of intake flow characteristics in a two-cycle engine which have an important effect on engine performance. For a two-cycle engine, there is close correlation between gas flow velocity and pressure. Therefore, it is necessary to elucidate these relations. The gas flows in the intake pipe were measured with a fiber laser Doppler velocimeter (FLDV) which has excellent optical properties. Furthermore, we measured the intake pipe pressure,the exhaust pipe pressure and the scavenging port pressure as well as the intake flow velocity using a developed simultaneous measurement system to clarify their mutual relations. From these measurements, the relations between gas flow velocity and pressure became obvious. In addition, the flow characteristics in the intake pipe were investigated by measuring the velocity at several measurement positions for various operating conditions.
社団法人日本機械学会の論文
1990-01-25