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1·However, overexcessive amount of external EGR could lead to an extremely unstable combustion or even misfiring .

但过大的外部EGR量，将导致发动机燃烧极度不稳定甚至失火。

2·It verified that there is a free space limit in motor combustion chamber. This limit is a value that affects the stable and unstable combustion.

结果发现，发动机燃烧室存在一个自由容积的阈值，这个值是影响发动机稳态燃烧和非稳态燃烧的界限值。

3·The existence of overmuch residual exhaust gas together with its over mixing with fresh charge is one of the main causes of unstable combustion at low load.

缸内残余废气过多以及废气与新鲜空气的过度混合是小负荷时燃烧不稳定的一个主要原因。

4·The disaster may be caused by unstable combustion pressure peak of sound vibration. Suggestions on how to reduce the explosion hazard in kitchen have been given.

指出可能是发生了声振不稳定燃烧压力峰造成的，并相应给出减小厨房天然气爆炸危害度的几点建议。

5·In view of the problems in boiler operation such as the pressure fluctuation and unstable combustion in 300 MW Heze Power Plant, the design features of W-fired boilers were introduced.

介绍了“W”火焰锅炉燃烧系统的设计特点，该锅炉运行过程中出现了炉膛负压波动大、燃烧不稳定的问题。

6·The main reasons to the rotary air pre-heater secondary combustion are related to unstable oil gun combustion, internal oil leakage and insufficient soot-blower steam pressure, etc.

锅炉回转式空气预热器发生二次燃烧的主要原因与油枪燃烧不稳定、内部有漏油和吹灰蒸汽压力不够等相关。

7·Proper amount EGR inducted can dramatically enhance the combustion rate and decrease the pressure rise rate, but too much EGR would result in unstable even intermittent combustion.

引入适量的EGR能显著地改善燃烧速率，降低最大压升率，但EGR过大会使混合气不能稳定、连续地着火燃烧。

8·The result shows that after cold start combustion in the cylinder is unstable and incomplete combustion or misfire exits. There is much difference between cylinders in combustion stability.

结果表明：汽油机冷起动后，缸内处于不稳定的燃烧状态，出现不完全燃烧或失火，并且各缸间的燃烧稳定性相差很大。