Homogenous Charge Compression Ignition (HCCI) combustion technology is receiving increased attention for its ultra-low NOx and PM emissions and high thermal efficiency.

均质压燃(HCCI)燃烧技术以其低氮氧化物、低微粒排放和高热效率的优点而引起世界各国的广泛关注。

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These steps prevent formation of any new (thermal) NOx and completes the combustion with excess air.

以上几个步骤迫使不能在该过程中形成氮氧化物，并借助多余空气完成燃烧。

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