Diesel Injector Fuel Injector 095000-1520 Denso Injector for Isuzu

Influence of nanodispersed modifications of magnetite powders on spray nozzle efficiency of diesel engine injector (part 1)

1. Introduction
The problem of wear and tear of spray nozzles of diesel engines became urgent in connection with the new requirements for environmental protection relating to the quality of diesel fuel. It is believed that when these requirements are met, it is necessary, in order to maintain the lubricity level, to introduce anti-wear additives into the fuel. In this regard, the European standard for the quality of diesel fuel introduced the index of lubricity [1, 2]. This problem has clearly become apparent in Russia, where the production of environmentally friendly fuel grows quite rapidly.
The traditional way to increase the tribotechnical characteristics of lubricants, by introducing various kinds of soluble additives in them, as shown by the studies of different authors, is not very effective for fuels. Therefore, the preservation of the anti-wear properties of fuel is an important task, the solution of which is possible only on the basis of fundamental studies of tribochemical processes and the search for new materials on their basis as additives.

2. Materials and methods
The antiwear agent [3] consisting of diesel fuel with 0.00001% micelles, formed on the basis of the molecules of solid plastic lubricant of iron oxide (Fe3O4), and with surrounding molecules of oleic acid (C18H34O2) in the amount of 0.0001%.
The additive has low shear resistance and increased lubricity of diesel fuel when this additive is introduced into it. The antiwear additive was added to the diesel fuel in a ratio of 1/10 at a temperature of 60 ° C and continuous stirring for one hour. The obtained fuel was used for operating in the test stand KI-921M equipped with injectors with an intrinsic magnetic field [4]. To compare the antiwear properties of fuels, depending on the sulfur content, tests were carried out for fuels with a sulfur content of 0.035%, 0.2% and 0.035% with the above antiwear additive introduced. The course of the tests and the procedure for processing experimental data using the tools of modern software products of computer mathematics are given in [5].