리니어 엔진의 스프링 강성이 연소 및 동적 특성에 미치는 영향에 관한 연구

This study was experimentally investigated the effects of the spring stiffness on top dead center(TDC), combustion and dynamic characteristics of two-stroke free piston linear engine. The linear engine generator power was increased by the engine speed(Hz). Using the high spring stiffness decreases stroke and increases the engine speed. In this study, using the Linaer engine on dual piston type. It has a bore size of 30mm and maximum stroke of 31mm. The effective stroke volume of each cylinder is 25.45CC. Stiffness of the spring 1.00 [N / mm], 2.9 [N / mm], 4.9 [N / mm], 14.7 [N / mm] was a variable. The engine was fueled with pre-mixture of LPG(butane 70% propane 30%) and air.