It is also found that the air fuel mixture is richer near the combustion chamber wall and becomes leaner gradually from the wall to the combustion chamber center, the stratification concentration from rich to lean of air fuel mixture forms along the direction of air swirl motion. 靠近壁面处燃油浓度最大,向燃烧室中心方向浓度逐渐降低,沿周向、顺涡流方向形成了明显的由浓到稀的分层。
The high energy ignition can increase A/ F coefficient and facilitate the combustion of lean fuel mixture. 高能点火可以扩大空燃比,实现超稀混合气燃烧,是实现稀薄燃烧的关键。