汽油机L型燃烧室入缸截面对充气效率的影响

The Effect of Cylinder Passage Cross Section to the Charge Efficiency from the L-Type Combustion Chamber in Side-Valve Gasoline Engine

经过对倒置气门汽油机Ｌ型燃烧室的试验研究，指出入缸截面是影响充气效率的关键因素，入缸截面积与活塞面积之比值的最佳范围在７．５％至８．５％之间。

Through the theoretical analysis and experimental study of the tradirional L-type combustion chamber in side-valve gasoline engine, this paper points out that the cylinder passage cross section from the L-type combustion chamber is the key factor influencing the charge efficiency, the best range of the ratio of the cylinder passage area to the piston area is between 7.5 %～8.5%.