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Date submitted2021-01-21
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Date accepted2021-04-19
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Date published2021-04-26
Justification of the use of a vegetal additive to diesel fuel as a method of protecting underground personnel of coal mines from the impact of harmful emissions of diesel-hydraulic locomotives
Equipment with diesel engines is used in all mining enterprises. Monorail diesel transport is of great importance in coal mines, as it facilitates the heavy labor of workers when transporting materials and people, fixing mining workings, refueling and repairing equipment, which leads to an increase in the speed of tunneling operations. Reducing the concentration of harmful gases from diesel-hydraulic locomotives at the workplaces of coal mine locomotive drivers can be ensured by the use of additives to diesel fuel that reduce the volume of harmful gas emissions during the operation of diesel-hydraulic locomotives. Additive ester-based on vegetal oil in the amount of 5 mass % in a mixture with hydrotreated diesel fuel reduces the concentration of carbon monoxide by 19-60 %, nitrogen oxides by 17-98 %, depending on the operating mode of the engine, the smoke content of the exhaust gases is reduced to 71 %. There is an improvement in working conditions at the workplace of the driver of a diesel-hydraulic locomotive by the chemical factor due to the reduction of the class of working conditions from 3.1. to 2.
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Date submitted1951-07-28
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Date accepted1951-09-11
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Date published1952-12-23
The influence of parasitic movements of the train on the operation of mine locomotives
- Authors:
- A. V. Rysev
The movement of a train with a locomotive under mine haulage conditions is a very complex process, consisting of a number of movements of the entire system as a whole and its individual parts. In addition to the main - useful forward - movement of the train, there are a number of secondary movements of a parasitic nature. These may include, for example, the impact of cars on each other and on the locomotive, twitching of the locomotive, shaking, rocking, wobbling, rolling, etc. From a production point of view, all of the listed parasitic movements are of great importance. They directly affect the main - forward - movement and, in addition, determine the stability of the rolling stock, cause its derailment, wear of the running gear and the track, and also affect the structural elements of the track and the rolling stock as a whole. However, the study of these issues remains in its infancy even in relation to the theory of traction on the tracks of mainline railways, which has a more long-standing practice than the theory of mine haulage electric locomotive haulage. The issues of the theory of parasitic movements of rolling stock on mainline railways are considered mainly only from the point of view of their influence on the design of the track and rolling stock.