Diesel fuel monitoring results during operational testing of KAMAZ vehicles

Abstract

Introduction. The problem of using surrogate diesel fuel (DF) in Russia automotive engines is quite acute. The use of such fuel leads to the technical and economic deterioration indicators of both engine and vehicle, and to the increase in nitrogen oxides emissions contained in exhaust gases.

The purpose of the study was to determine the diesel fuel quality and to exclude the use of surrogate diesel fuel in KAMAZ vehicles operation.

Methodology and research methods. The research methodology is related to the analysis of fuel samples, during which the following is determined: cetane number and cetane index, kinematic viscosity, density, fractional composition, flash point in a closed crucible, cloud point, filtering temperature, mass fraction of sulfur, water content, lubricating fuel ability. The sulfur content is taken as an estimated fuel quality indicator, since in most cases, a fuel with a high sulfur content is surrogate.

Scientific novelty and results. During 2018 monitoring for sulfur content in diesel fuel samples, it was found that: 88.6% of the samples met the requirements of GOST R 52368-2005 and GOST 32511-2013 (sulfur content was not more than 350 ppm); 8.8% of the samples met the requirements of GOST 3052013 (sulfur content of was more than 350 ppm). 2.5% of the received fuel did not meet the requirements of regulatory documents.

Practical significance. The conclusion is that the problems associated with the production and sale of fuels that do not meet national standards can be solved by improving the regulatory framework, by introducing control over the automobile gas stations activity and tightening the liability of producers and sellers of surrogate diesel fuel.