车用汽油驱动性指数研究  

STUDY ON DRIVEABILITY INDEX FOR MOTOR GASOLINE

作　　者：刘倩[1] 刘顺涛[1] 郑煜[1] 

机构地区：[1]中国石化石油化工科学研究院,北京100083

出　　处：《石油炼制与化工》2016年第4期96-100,共5页Petroleum Processing and Petrochemicals

摘　　要：车用汽油驱动性指数(DI)综合考虑了汽油各个馏分的分布,能较好地表征汽车冷起动性能和暖机性能。对DI的提出、研究进展及用途进行了阐述,并对我国车用汽油样品DI值分布情况进行了初步分析研究。考察了不同季节、不同区域DI值的分布情况,并考察了车用汽油质量升级对DI值的影响。结果表明:我国汽油DI值分布范围较宽,不同地区的DI值差别很大;被考察地区不同季节DI值差别明显,冬季汽油DI值整体偏低;同一季节有些地区汽油DI值差别不大,但有的地区汽油DI值跨度很大。被考察的两个地区近几年随着油品的升级DI值变化不大。有些地区的部分样品DI值较高,应给予关注。The driveability index （DI） considering the distribution of fractions of motor gasoline can indicate the cold-start and warm-up performance of the vehicle engine. The history, developments and applications of DI were stated. The DI distributions in China were analyzed considering different seasons and different areas. Through the analysis of a large number of samples, the effect of quality upgrading of gasoline on DI was also investigated. The results show that the DI values change widely with regions and seasons in China. The DI value is obviously lower as a whole in winter than in summer. At the same season there are big differences in DI value for some region, but for some other areas the span of gas DI value is very large. DI value in recent years changes very little though the quality of gas is upgraded in the two regions investigated. It is noteworthy that the samples in some regions have higher DI values that need careful attention.

关 键 词：车用汽油 挥发性 驱动性能 驱动性指数 

分 类 号：TE626.21[石油与天然气工程—油气加工工程]