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Wyszukujesz frazę "Non-Road Mobile Machinery" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
The impact of operating parameters of tractors engine on exhaust emissions
Autorzy:
Merkisz, J.
Pielecha, J.
Jasiński, R.
Powiązania:
https://bibliotekanauki.pl/articles/243291.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
Non-Road Mobile Machinery
exhaust emission
operating parameters
Opis:
At the beginning of the twenty-first century, one of the major challenges of humanity was to reduce the negative effects of civilization development. Besides the engines used in road vehicles there is a large group of engines for non-road applications. This group includes motor propelled vehicles not used on the road NRMM (Non-Road Mobile Machinery). Engines of these vehicles, among all of the non-road applications, are characterized by very specific working conditions that do not allow them to be qualified for propulsion engines. The main problem with these vehicles is the particulate matter and nitrogen oxides emission. The paper presents an analysis of the operating parameters of an engine and exhaust emissions of a tractor operating on a chassis dynamometer. Studies of the tractor involved measurements of engine operating parameters and the concentration of harmful substances in the exhaust gases. Information about the parameters of the engine and the intensity of emissions were obtained during the dynamometer test. The study included a comparative analysis of the operating parameters of the engine obtained from the diagnostic system and direct measurements on a chassis dynamometer and a correction of the torque obtained from the vehicle computer system was made. As a result, values of specific emission during engine tests under varying values of load were determined.
Źródło:
Journal of KONES; 2016, 23, 4; 339-350
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the Exhaust Emissions of Toxic Compounds from a Special Purpose Rail Machine PŁT-500 During Profiling the Ballast Cess
Autorzy:
Daszkiewicz, Paweł
Andrzejewski, Maciej
Urbański, Patryk
Woch, Aleksandra
Stefańska, Natalia
Powiązania:
https://bibliotekanauki.pl/articles/1955467.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
exhaust emission
non-road mobile machinery
real driving emissions
special purpose rail machine
PŁT-500 machine
railway subgrader
Opis:
Track works typically require the use of special-purpose rail machines, in which the main source of propulsion includes high-power compression ignition engines. Reliance on these types of engines, which are characterized by a significant degree of wear and tear, relates to relatively high specific fuel consumption and the exhaust emissions of toxic compounds. Using such rail machines to perform modernization and repair works has a negative impact on the natural environment. The article presents test results of toxic compounds exhaust emissions as measured from a special purpose rail machine. The tested vehicle was a machine designed for profiling the ballast cess labeled as PŁT-500. The machine was classified as NRMM (Non Road Mobile Machinery) as well as used for profiling and cleaning the cess. A PEMS (Portable Emissions Measurement System) type apparatus was used for the emissions measurement. This made it possible to measure the exhaust emissions as RDE (Real Driving Emissions) of toxic compounds from the machine under real operating conditions. The obtained test results include the measured exhaust emissions of gaseous compounds: CO, CO2, HC and NOx as well as the vehicle fuel consumption while performing its track works.
Źródło:
Journal of Ecological Engineering; 2021, 22, 7; 80-88
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Warunki pracy mobilnych maszyn rozdrabniających drewno w aspekcie innowacyjnych systemów sterowania napędem
Working conditions of mobile wood chipping machines in the aspect of innovative drive control systems
Autorzy:
Wargula, L.
Waluś, K.J.
Krawiec, P.
Powiązania:
https://bibliotekanauki.pl/articles/979707.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
maszyny lesne
rebaki
rebak Red Dragon RS-100
warunki pracy
naped
systemy sterowania
wood waste processing
non−road mobile machinery drives
innovative control systems
Opis:
The effectiveness of agrocultural processes in wooded areas depends, inter alia, on the kind of machines used. Mobile machines chopping branches with low power engines are characterized by limited adaptation of the drive unit to the operating conditions. This results in increased fuel consumption and increased exhaust emissions. In order to develop innovative control systems that reduce fuel consumption, it is required to determine the conditions of use of such machines. The article characterizes the periodic−variable cycle of chopping wood machines, depending on the frequency of branch delivery. The research was carried out at the following distances of the branch stack from the chipper: 0.5 m; 1.5 m and 2.5 m, indicating the characteristics of changes in the throttle angle (signalling the change in system load). The share of idle and active work time in the process of the waste chopping depending on the distance between the chipper and the pile of branches was determined and described. It was proved that at a distance of about 0.5 m, idle operation accounts for about 22% of the chopping process time, and at a distance of 2.5 m, the share of idle labour increases to ca. 35%. These distances, due to the topography of the terrain in real operating conditions, can be much larger. This suggests that carrying out work on reducing energy consumption and emissions of harmful exhaust compounds, depending on the operating conditions, is justified because the idle operation of the grinding machine can account for even more than 50% of the entire operation of the device. Benefits resulting from the development of innovative control systems for drive units of machines chopping branches are particularly important due to the limitation of the quantitative impact of exhaust emissions on the natural environment and machine operators.
Źródło:
Sylwan; 2019, 163, 09; 765-772
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measurement of rail vehicles exhaust emissions
Autorzy:
Kamińska, Michalina
Kołodziejek, Daniel
Szymlet, Natalia
Fuć, Paweł
Grzeszczyk, Rafał
Powiązania:
https://bibliotekanauki.pl/articles/2097647.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
exhaust emission
rail vehicles
real driving emissions
RDE
portable emission measurement system
PEMS
non-road mobile machinery
NRMM
emisja spalin
pojazdy szynowe
rzeczywista emisja cząstek
przenośne systemy pomiaru emisji
pozadrogowe maszyny ruchome
Opis:
The basic problem in terms of measuring exhaust emissions is the approval tests of traction vehicles, which are carried out on engine dynamometers. Therefore, it is impossible to obtain reliable results concerning their actual impact on the natural environment. It is therefore advisable to carry out the tests in real operation conditions, as is the case for road vehicles for which RDE (Real Driving Emissions) tests are carried out. The latest Stage V emission standards push for the introduction of this type of test, but no limit values for toxic exhaust gases have been established and no test guidelines have been defined for assessing actual emissions. This article describes the issues related to the legislative guidelines for non-road vehicles in force in Europe, as well as the measurement tools used, such as mobile equipment for measuring emissions of PEMS (Portable Emissions Measurement Systems) and newly developed emission gates. Additionally, the paper presents examples of locomotive exhaust emission tests in real operating conditions. The aim of the measurements was to assess the emission of toxic compounds against the relevant standards. The subject of the research was a diesel locomotive type T448.P equipped with a modernized internal combustion engine.
Źródło:
Combustion Engines; 2022, 61, 2; 10--17
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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