Improvement of diesel injector nozzle test techniques

Abstract

Due to changes in the characteristics of the fuel equipment during operation, a considerable part of the life cycle of locomotive engines operate under increased fuel consumption, and thermal voltage, which often causes degraded environmental performance and reduced engine capacity and, as a result, low efficiency of the locomotive. A reserve for improving the performance of the diesel plant and the diesel locomotive in general is the implementation of measures to prevent changes in the characteristics of the fuel system, for example, the development of clean-in-place technique of fuel systems from carbon deposits. In order to determine the effectiveness of such measures, it is necessary to apply new quality control methods of fuel atomization. The article offers a more informative method for evaluating the quality of fuel atomization, which can be used in locomotive depots during research and development work. The method consists of microphotography of the drops of sprayed fuel followed by microscopic analysis and processing of the results using special software. It is proposed to process the results of injectors testing using a statistical method, taking into account the parameters according to the Rosin-Rammler dependence for the relative total curve. As a result of the work, it became possible to develop requirements and implement technical improvements to the test stands for fuel equipment of diesel locomotives.

Laboratory Tests of Electrical Parameters of the Start-Up Process of Single-Cylinder Diesel Engines

“…As is known, the combustion engine must ensure reliable operation for a very long time [48][49][50][51] under variable load conditions. Interesting operational tests of the diesel engine power system were carried out, among others: Aulin et al [52], Kami ński et al [53], Osipowicz et al [54], and Punov et al [55]. Pawlak and Skrzek [56] also modified the injection strategy in the Common Rail system using vegetable oils.…”

The Planning Process of Transport Tasks for Autonomous Vans—Case Study

“…Among the research on fuels, the large share of gaseous fuels, such as LPG [19,20], natural gas [21], CNG [22], LNG [23,24] hydrogen feed systems [25], PEM fuel cells [26], and others [27][28][29], should be emphasized. In recent years, there has been a huge development in the field of internal combustion engines [30][31][32][33][34][35][36], the existing power supply systems for spark ignition engines [37][38][39][40], diesel engines [30,31,[41][42][43], battery electric vehicles [9,[44][45][46][47], and hybrid systems [48][49][50][51]. A completely different issue is autonomous vehicles (AV), which constitute a separate, quite extensive part of the transport sector and hence the great interest and multifaceted research in this field [52][53][54][55][56][57][58][59].…”

Charging Electric Vehicles from Photovoltaic Systems—Statistical Analyses of the Small Photovoltaic Farm Operation

“…Despite these recent problems, the automotive industry has experienced tremendous development in the last two decades. It is visible, inter alia, in the improvement of the design of internal combustion engines (ICE) [3][4][5][6][7][8], the existing power supply systems for spark ignition engines [9][10][11][12] and diesel engines [13][14][15][16][17], the production and development of alternative fuels [18][19][20][21][22], and the development of innovative vehicle drives such as hybrid systems [23][24][25][26] or battery electric vehicles (BEV) [27][28][29]. Moreover, very advanced works are underway on the method of changing driving, i.e., development works on fully autonomous vehicles [30][31][32][33][34].…”