the result showed that the said technology improved the lco cetane number effectively, and reduced the existent gum of the product.

实践证明，该技术能够有效地提高催化裂化柴油的十六烷值，并能降低产品的胶质。

dimethoxymethane possesses higher quantity of oxygen, higher ratio of hydrogen to carbon and lower flash point. it can improve cetane number when mixed with the diesel oil.

甲缩醛含氧量大、氢碳比高、闪点低，加入柴油中能够提高其十六烷值。

the petroleum quality in our country became worse one year by one , thus, the cetane number decrease , and impurity content of petroleum increase every year.

另一方面，由于长年开采，我国油田的油质逐年下降，所供油品十六烷值降低，并且杂质含量等指标逐年增高。

according to its indicated pressure diagrams measured under the condition of burning diesel fuels with different cetane number in d.

通过实测直喷式柴油机燃烧不同十六烷值柴油时的缸内压力示功图，以此计算出相应的燃烧放热规律。

cyclohexyl nitrate is an effective cetane number improver for diesel oil.

硝酸环己酯是一种有效的柴油十六烷值改进剂。

a diesel fuel cetane number improver, which constituent is a naphthenic nitrate, is developed, and physicochemical properties of this im-prover is determined.

&&&&前言：研制了一种为脂环族酯的改进剂，并测定出这种改进剂的一系列理化性质。

the influence of cetane number improver on heat release rate and emissions of a high-speed diesel engine fueled with ethanol-diesel blend fuel was investigated.

研究了十六烷值改进剂对轻型高速柴油机燃用乙醇柴油燃料时放热率与排放特性的影响。

determines the pump octane number (aki), research octane number (ron), and motor octane number (mon) of unleaded gasolines, and optional cetane index and cetane number for diesel fuels.

用于测量汽油的抗爆指数（aki）、研究法的辛烷值（ron）以及动力法的辛烷值（mon），也可适用于柴油的十六烷值分析。

the influence of cetane number on the ignition and combustion of diesel fuel ind. i. diesel engine is briefly reviewed.

本文论述了柴油十六烷值对直喷式柴油机着火和燃烧特性的影响；

the numerical result calculated by the formula for estimating the cetane number of distillate fuels from american petroleum institute (api) gravity and midboiling point.

用美国石油学会比重度和中沸点估算馏分燃料十六烷值公式计算得到的数值结果。

some properties of petroleum products in refinery such as gasoline octane number and diesel cetane number are necessary to be online monitored.

就柴油十六烷值改进剂的种类、作用机理及其研制的重要意义做了综述，介绍了部分十六烷值改进剂的性能特点。

the significance, properties and characteristics, action mechanism and classification of cetane number improver are introduced systematically in this paper.

就柴油十六烷值改进剂的种类、作用机理及其研制的重要意义做了综述，介绍了部分十六烷值改进剂的性能特点。

to improve the co and opacity smoke emissions, the fuel cetane number exists an optimum.

对于co排放及消光烟度，十六烷值存在一个最佳值。

cetane number (cn) of diesel has effect on cold startability and emissions in a diesel engine.

柴油的十六烷值对柴油机冷起动和排放有一定影响。

a novel method applied to near-infrared(nir)spectroscopy diesel cetane number prediction is presents.

提出一种基于最小二乘支持向量机（ls svm）的柴油十六烷值近红外光谱测量方法。

the molecular structure of dme doesn't have c-c bond, and contains high proportion of oxygen, high cetane number and good spray characteristics at the same time.

二甲醚的分子结构中不含c-c键，且为含氧燃料，同时具有十六烷值高、雾化特性好等特点。

the influence of cetane number on the ignition and combustion of diesel fuel ind.

本文论述了柴油十六烷值对直喷式柴油机着火和燃烧特性的影响；

the results indicate that the operation region of hcci engine can be extended by using dme with a high cetane number and cng with a high octane number.

结果表明，采用高十六烷值燃料二甲基醚和高辛烷值燃料天然气，可以拓宽均质压燃的运行工况范围。

it is a supplementary tool for predicting cetane number with considerable accuracy when used with due regard for its limitations.

这是一个具有很大準确性的预测十六烷值的辅助工具，但应适当注意到其局限性。

effects of cetane number improver, surfactants and organometallic compounds as diesel fuel additive on soot emission reduction were investigated with a 6120q di diesel engine.

采用6120q直喷式柴油机对十六烷值改进剂、表面活性剂和有机金属化合物作为柴油添加剂降低柴油机碳烟排放的规律进行了试验研究。

since china, s conditions differ from those in usa. west europe and japan, the use of diesel fuels of low cetane number should be urged so as to increase the sources of fuel supply.

鑒于中国的国情与美国、西欧以及日本的国情不同，应当鼓励燃用低十六烷值柴油以扩大内燃机车燃料的供应；