The study of the toxicity of exhaust gases of a diesel engine when operating on methanol and methyl ester of rapeseed oil

Diesel particulate matter (DPM) is an area of concern from an environmental point of view due to its functionality to settle in the respiratory channels when inhaled, cause inflammation in the respiratory tract, accumulate carcinogenic compounds, and adversely reflected the cardiovascular functions, thus causing excess mortality. DPM consists of an agglomeration of a numerous unions of preimages germ structures, spherical in the form of turbostratic carbon. Part of the DPM contains partially oxidized polyaromatic compounds C and H with a ring structure (PAH).

Section: Methodsmentioning

confidence: 99%

Morphological properties and atomic crystal lattice of solid carbonaceous objects

Rossokhin¹,

Лопатин²,

Pushkarenko³

et al. 2022

“…The content and significance of chemical transformations during this period can be judged by the following features of self-ignition of fuels in DE [12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Physical and chemical processes of fuel change during ignition in diesel engine

Alatyrev

Kazakov

Vasiliev

et al. 2022

The combustion of hydrocarbon fuels in the combustion chambers of diesel engines is preceded by processes of both physical and chemical transformations. The nature of the chemical transformations and their effect on the workflow are usually not taken into account. Meanwhile, their role in ensuring the efficiency of the workflow is very large. Chemical transformations in hydrocarbon fuels in combustion chambers cause the appearance of products capable of self-ignition under the influence of temperatures and pressures arising at the end of the compression stroke. The chain of these transformations ends with the formation of soot particles, the burning of which with abundant heat release in the form of radiant energy has a significant effect on the value of the indicator efficiency. The content and ways of influencing chemical transformations in fuel are considered, as well as the use of these transformations in increasing the combustion efficiency of fuels and increasing the indicator efficiency.

“…Based on the tasks before us, we worked in the available volume in the piston of the TSNIDI form, developed at the Minsk Motor Plant, which has proven itself to be optimal for the volumetric film oxidation mechanism, and when operating according to the DF / NG cycle, the amount of spatial mixing will increase proportionally. The value of the compression level, the organization of the return of part of the burnt gases to the cylinders, the properties of the intake technology, the movement of the air charge relative to the axis, and some others have not changed and, accordingly, are within comparable limits [10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Principles for optimizing the working process of a high-speed heat engine when converting it to a gas-liquid modification

Kazakov

Alatyrev

Vasiliev

et al. 2022

Converting a compression-ignition thermal plant to gas-liquid operation is one way to neutralize the danger of waste while maintaining the high efficiency of the engine corresponding to the original modification. Although debugging the functioning of a gas-liquid installation is a significantly problematic task, since we are dealing with a large number of interrelated properties. Therefore, optimizing the injection of diesel fuel (DF)/methane by solving a problem with several unknowns was one of the goals of our research. More than 10 parameters must be taken into account for the modeling to be adequate, including the initial (flammable) DF injection. In our experiments, the volume of the ignition DF was determined to be optimal in the amount of 0.15...0.20 relative to the single-fuel modification, respectively, the duration of fuel injection changed proportionally.