柴油机的扩散燃烧方式会产生较高的烟度排放，在燃油中加入少量的燃油添加剂能够改善燃烧过程降低排放。
Diesel engines can produce higher soot emissions due to its diffusion combustion mode and small amounts of fuel additives can improve such process and thereby reduce emissions.
既可保证提高燃烧过程的经济性，又可以改善火电厂的生态条件。
It can not only make the burning process more economic but also improve the ecologic condition of the power plant.
为了改善电喷汽油机冷起动及冷态怠速运转（即暖车过程）性能，自行研制了基于高能双火花塞点火的快速燃烧系统。
Improvement of cold starting and cold idling circulation(engine warming up)combustion process of motorcycle gasoline engines by dual-spark plug-based rapid burning system was introduced.
本文的试验研究结果提供了一些改善发射装药起始燃烧过程稳定性的重要信息。
This experimental investigation can provide some significant information that will improve the stability of combustion of propelling charge in its initial stages.
计算结果表明，选择合适的压缩比、喷油提前角，可以改善缸内的燃烧过程，降低燃油消耗率。
The calculation result indicates that choose the appropriate compression ratio, the Angle of fuel injection can improve the cylinder burn and reduce the fuel exhaust.
在汽油机的燃烧过程中加入部分的氢气进行燃烧，可对发动机的性能改善和废气排放物的降低起到良好作用。
During the combustion process of gasoline engine, adding some hydrogen partly has good effect on improvement of gasoline engine performance and reduction of exhaust emissions.
通过采取增大压缩比、采用湍流型燃烧室的措施，可改善发动机的燃烧过程。
By means of increasing compress ratio and adopting a turbulent combustion chamber, the combustion process was improved.
本文阐述了TDR系列燃烧改进剂的性能与组成、作用与应用及其改善柴油机燃烧过程的机理。
Properties, constituents, functions and applications of TDR series combustion improvers as well as mechanism for improving diesel engine combustion process were described.
以优化燃烧过程、改善排放性能为目标，对某重型柴油机进行改进。
Improvement was carried out on a model of heavy duty diesel engine to optimize combustion process and emissions.
结果表明，通过调节排气门关闭正时，适当增大缸内残余废气量，可显著改善起动过程初始着火循环的着火燃烧性能和提高起动过程缸内燃烧的稳定性。
The results show that a proper increase of residual gas fraction could promote ignition and combustion stability of first firing cycle significantly during cold start.
空气是必要的，在燃烧过程中，有更多的空气带来更好的燃烧，从而改善系统的性能。
As air is needed in the combustion process, having more air results in better combustion, and hence improved performance.
结果表明：喷注汽化燃料有可能改善液体碳氢燃料超声速燃烧室的性能，因为至少省却了雾化和气化过程。
The results suggest that the injection of vaporized fuel would improve the performance of a liquid hydrocarbon-fueled supersonic combustor because the evaporation process is now omitted.
这些相互冲突的条件要求进行折衷，但是，燃烧室设计与性能的连续改善已经导致燃烧过程“清洁”得多了。
This conflict of conditions requires a compromise to be made, but continuing improvements in combustor design and performance has led to a substantially 'cleaner' combustion process.
柴油机动力性和经济性的标准越来越高，优化柴油机燃烧过程是改善柴油机综合性能的重要方法。
As the standard of power and economic performance of diesel grows strictly, it is very essential to optimize the combustion process in a highly intensified diesel engine for better performance.
进气温度提高后，混合气均匀性得到改善，喷油策略对燃烧过程影响作用减小。
When the intake temperature is increased, the fuel distribution becomes more homogenous, the effects of different port injection strategies on combustion process become small.
进气温度提高后，混合气均匀性得到改善，喷油策略对燃烧过程影响作用减小。
When the intake temperature is increased, the fuel distribution becomes more homogenous, the effects of different port injection strategies on combustion process become small.
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