为了满足越来越严格的排放法规和经济性要求，改善柴油机混合气均匀性是有效的措施之一。

In order to meet strict emission regulations and economic demand, it is one of effective means to improve uniformity of mixture of air and fuel in diesel engine.

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柴油相比，混合气更均匀，燃烧也更完全。

Diesel compared to a more homogeneous mixture, and more complete combustion.

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到压缩行程后期废气和新鲜混合气逐渐混合，但总体上废气和新鲜混合气在气缸内是处于不均匀分布的。

And near the end of the compress stroke, the exhaust gas mixes with the fresh charge gradually, however, the distribution of the exhaust gas and the fresh charge is heterogeneous as a whole.

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