a measure of the antiknock properties of gasoline

The propylene content in feedstock, when less than 2%, has little effect on the octane number of the alkylate.

进料中丙烯含量小于2%时，对烷基化油辛烷值影响不大；

Alcohol gasoline as vehicle fuel is prepared by fuel alcohol and gasoline, its octane number is frequently determined during preparation.

车用乙醇汽油是由燃料乙醇与基础汽油以一定比例调合而成，调配时测定其辛烷值的频次较高。

It has been used as an alternative of gasoline, improvers for octane number and oxygen content in gasoline.

在国外曾以汽油替代物、辛烷值改进剂和增加汽油氧含量三大作用添加到汽油中。

The state of art and existing problems of fuel qualities including gasoline octane number were discussed.

分述汽油辛烷值的现状和存在问题；汽车排气控制标準对节能及油品规格的影响；

The octane number may be improved about 1.8-31 units by above mentioned processing, the stability is also improved, and the vapour pressure is decreased.

上述工艺可使研究法辛烷值提高1．8～31单位，并使其安定性得到改善，蒸汽压有所降低。

Fuel type Unleaded premium, minimum octane rating 98 (RON), automatic knock control permits operation with minimum octane number 95 (RON).

燃料类型无铅保费，最低辛烷值98(罗恩)，自动爆震控制许可证的运作与最低辛烷值95(罗恩)。

The continuous reformer of chemical Plant at Tianjin Petrochemical Corporation adopted GCR-100 catalyst for producing high octane number aromatics raw material.

天津石化公司化工厂芳烃车间连续重整装置采用GCR 10 0型重整催化剂生产高辛烷值芳烃原料。

The model of pre -determining octane number of alcohol gasoline is established on the basis of octane numbers obtained by the standard method, and its precise and repeatability are validated.

根据标準方法测定的辛烷值数据建立了乙醇汽油辛烷值预测模型，并对该模型进行了準确性和重现性验证。

The percentage of iso-octane in blend is considered the octane number of the test sample.

混合物中异辛烷的百分比就认为是实验样本的辛烷值。

Two methods for estimating the octane number of hydrocarbons namely, the first level group contribution method and second level group contribution method were presented and assessed.

提出了两种用基团贡献法估算烃的辛烷值的方法，第一水平基团法和第二水平基团法。

Meanwhile, coke yield increase and octane number loss should be considered when reducing olefins through hydrogen transfer reactions.

同时，在加强氢转移反应减少烯烃时，还需考虑焦炭选择性变差和汽油辛烷值下降的问题。

In this paper, improvement of technology and catalyst are reported in ARGG technology installation. The petroleum gas of rich propylene and gasoline of high octane number are obtained.

ARGG技术在普通催化、裂化工艺装置上的应用。通过对工艺、设备和催化剂的改进工作，可以多产富含丙烯的液化石油气和高辛烷值汽油。

On-line detection of gasoline octane number is very important for the production of high quality gasoline, and is essential for the reconciliation process.

汽油辛烷值的实时检测对生产高品质的汽油及控制调和装置具有重要意义。

The octane number of gasoline and cetane number of diesel was slightly affected.

汽油辛烷值和柴油十六烷值变化不大，柴油实际胶质降低。