抄録
An experimental study was made to examine the mixture formation process in the combustion chamber of a natural gas fueled engine. The planar laser induced fluorescence (PLIF) technique was applied for the visualization of the concentration distribution in the combustion chamber. As the fluorescent tracer, biacetyl was used. The original engine was modified for optical observation ; An extended combustion cylinder with glass windows was installed and an extended piston with transparent head was used. The fuel concentration distribution was visualized between the intake and compression strokes and the effects of a throttle opening on the distribution were examined.
