Special reference gasoline for gasoline engine detection tests and preparation method of special reference gasoline

Abstract

The invention discloses special reference gasoline for gasoline engine detection tests and a preparation method of the special reference gasoline and belongs to the field of preparation of reference gasoline. The special reference gasoline comprises #1 special reference gasoline, #2 special reference gasoline and #3 special reference gasoline, wherein the technical index requirements of the #1 special reference gasoline are as follows: the contents (volume fractions) of aromatic hydrocarbons with different carbon numbers in the #1 special reference gasoline are uniformly distributed, and the #1 special reference gasoline includes 6.5-8.5% of C7, 6.5-8.5% of C8, 6.5-8.5% of C9 and 5.5-7.5% of C10<+>; the content of C7-C8 aromatic hydrocarbons in the #2 special reference gasoline is greaterthan or equal to 25% (volume fraction); aromatic hydrocarbons with other carbon numbers are uniformly distributed; the content of aromatic hydrocarbons with a carbon number greater than or equal to 9in the #3 special reference gasoline is greater than or equal to 25% (volume fraction); and aromatic hydrocarbons with other carbon numbers are uniformly distributed. The prepared special reference gasoline for gasoline engine detection tests meets technical index requirements of GB 18352.6-2016 Appendix K reference gasoline.

Description

technical field [0001] The invention belongs to the field of benchmark gasoline preparation, and in particular relates to benchmark gasoline for gasoline engine inspection tests, special benchmark gasoline and a preparation method thereof. Background technique [0002] Due to the increasingly prominent problems of environmental pollution and energy crisis in the world, automobiles, as an important source of air pollution, have received more and more attention from all aspects of their emissions, and countries all over the world have invariably formulated strict emission regulations. With the continuous tightening of emission standards, the pressure to reduce vehicle emissions continues to increase. While automakers adopt various advanced technologies and emission control measures to reduce harmful gas emissions from vehicles, they find that these advanced technologies and control measures are closely related to the components and technical indicators of the used vehicle fuel...

AI Technical Summary

Problems solved by technology

First, the reference fuel will affect the ability of motor vehicle manufacturers to make their vehicles meet emission standards, thus affecting a country's long-term control effect on motor vehicle pollution

Secondly, due to the relatively loose fuel standards in the market, the absence or non-strict implementation of benchmark fuel standards has the following adverse effects: (1) Bring confusion to motor vehicle manufacturers, and large fluctuations in fuel quality may cause instability in vehicle compliance ;(2) Lack of comparability of scientific research results between different laboratories, thereby hindering the progress of scientific research; (3) Reduce the persuasiveness of the test report of the testing department; (4) Bring inconvenience to the supervision of the environmental protection department

(5) Low-emission engines that are sensitive to fuel quality and have more sophisticated construction of pollution control devices are unfair

[0007] At present, my country's light-duty vehicle pollutant emission limits and measurement methods (GB 18352.6-2016) appendix K1 benchmark gasoline technical indicators only stipulate the total limit and upper limit indicators, especially aromatics, olefins, sulfur, etc. The indicators that have a greater impact on testing experiments and emission requirements are relatively extensive and cannot meet the requirements of engine testing experiments. It is very necessary to quantify some specific indicators to meet the requirements of engine testing experiments for different testing purposes.