Quasi homogeneous charge compression ignition (QHCCI) combustion may be with low emissions, especially for soot and NO_X, according as the most fuel which is pre-mixed is lean burnt.
Through homogeneous mixing between gas and air in cyclical combustion chamber of gas external combustion type lime kiln, it can be enough combustion, has homogeneous flame temperature.
煤气、空气在外燃式石灰炉的环形燃烧室内混合均匀,燃烧充分,火焰温度均匀,便于控制。
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Diesel compared to a more homogeneous mixture, and more complete combustion.