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Wyświetlanie 1-5 z 5
Tytuł:
Effect of nitrON® cetane-detergent additive to B7 fuel on energy parameters and exhaust gas composition of a 6Dg locomotive with a Caterpillar C27 engine
Autorzy:
Cisek, Jerzy
Borowski, Andrzej
Całkowska, Joanna
Wichary, Łukasz
Powiązania:
https://bibliotekanauki.pl/articles/2097555.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
diesel engine
biofuels
fuel additive
exhaust gas composition
silnik Diesla
biopaliwa
dodatek do paliwa
skład spalin
Opis:
In order to avoid the negative effects of increasing the amount of RME in the fuel, the nitrON® package was used, containing 3 different additives: stabilizing, washing and increasing the cetane number of the fuel. The tests were carried out with the use of the Caterpillar C27 engine of the 6Dg locomotive connected to a water resistor. The hourly engine fuel consumption (FC), NOx concentration and exhaust opacity were measured for 3 points of the F test, in accordance with UIC 624. The concentration of the nitrON® additive in the test fuel was 1500 ppm (v/v). For idling, the reduction in FC value was only 1.5% (in relation to the base fuel), but for a very high engine load and nominal rotational speed, the percentage reduction in FC was as high as 5%. The reduction of NOx concentration for idling (as a result of using nitrON®) was approx. 10%, while for high engine load, the percentage reduction of NOx concentration in the exhaust gas exceeded 15%.
Źródło:
Combustion Engines; 2021, 60, 3; 51--58
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of cetane-detergent additives into diesel fuel increased to 10% (V/V) of RME content on energy parameters and exhaust gas composition of a diesel engine
Autorzy:
Stanik, Winicjusz
Cisek, Jerzy
Powiązania:
https://bibliotekanauki.pl/articles/134023.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
cetane-detergent additives
RME
exhaust gas composition
diesel engine
dodatki cetanowo-detergentowe
składniki spalin
silnik spalinowy
Opis:
To avoid the negative effects of increasing the amount of RME in the diesel fuel (to 10%), three different additive packages were used: stabilising, cleaning, and increasing the cetane number with different concentrations. The tests were carried out using a 4-cylinder, turbocharged 1.9 TDI engine from VW. The tests were carried out for 4 fuels (comparative fuel with a content of 7% RME and 3 test fuels with a content of 10% RME, differing in the content of the additive package. It was found that each of the 3 additive packages used does not have a significant impact on fuel consumption. However, a different effect of the tested additives on the composition of exhaust gases was observed. The first package had a slight effect on reducing the NOx concentration in the exhaust, but only for small engine loads. On the other hand, the second additive pack worked more effectively only at higher engine loads (in relation to the reduction of NOx concentration in the exhaust gases). In the third packet, the amount of the cetane additive was doubled (compared to the second packet). Then, the reduction in the NOx concentration in the exhaust gas by 3-8% was obtained with reference to the comparative fuel.
Źródło:
Combustion Engines; 2019, 58, 4; 204-209
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of the fuel spray nozzle geometry on the exhaust gas composition from the marine 4-stroke diesel engine
Autorzy:
Kowalski, J.
Powiązania:
https://bibliotekanauki.pl/articles/133373.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
marine Diesel engine
fuel injector geometry
combustion process
exhaust gas composition
emission
silnik okrętowy
proces spalania
skład spalin
emisja
Opis:
The paper presents experimental research on a 4-stroke, 3-cylinder, turbocharged AL25/30 Diesel engine. Research consisted in investigating the effect of the geometry of the fuel injectors on the exhaust gas composition from the engine. During measurements, the engine was operated with a regulator characteristic of a load range from 40 kW to 280 kW, made by electric water resistance. The engine was mechanically coupled to the electric power generator. Three observations were made for each engine load, operating with fuel injectors of varying geometry. All considered types of injectors were installed on all engine cylinders. Mentioned injectors differed in the size of the nozzle holes diameters, holes numbers and angles measured between the holes axis. Engine performance data were recorded with a sampling time of 1 s. Cylinder pressure and fuel injection pressure on the front of each injector were collected also. The composition of the exhaust gas was measured using an electrochemical analyzer. According to the results, the change of fuel nozzle geometry results in a change in fuel spraying and evaporation and consequently changes in the course of the combustion process. The effect of this is the change of the composition of the exhaust gas.
Źródło:
Combustion Engines; 2018, 57, 1; 59-63
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The model of combustion process in the marine 4-stroke engine for exhaust gas composition assessment
Model procesu spalania w 4-suwowym silniku okrętowym do oceny składu spalin
Autorzy:
Kowalski, J.
Powiązania:
https://bibliotekanauki.pl/articles/132837.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
marine diesel engine
model
combustion process
exhaust gas composition
computational fluid dynamics
okrętowy silnik spalinowy
proces spalania
skład spalin
komputerowa dynamika płynów
Opis:
The paper presents the model of combustion process in the marine, turbocharged, 4-stroke and Diesel engine. The main target of modeling is the assessment of the exhaust gas composition. Presented multi-zone, 3-D model of combustion process consists of the following sub-models of processes: the fuel injection, the brake-up and the evaporation of fuel and the turbulence flow and the heat transfer phenomena. Presented model basis on the 3Z-ECFM mechanism of combustion and the initial and boundary conditions collected during direct measurements. The positive validation of the calculation results are obtained for mean and maximum value of the combustion pressure and values of oxygen and nitric oxides fractions in the exhaust gas. Unfortunately, fractions of carbon compounds in the exhaust gas are not properly calculated.
Praca prezentuje model procesu spalania 4-suwowego, turbodoładowanego, okrętowego silnika o zapłonie samoczynnym. Celem modelowania była ocena składu emitowanych spalin. Model ten to wielostrefowy, trójwymiarowy model spalania, obejmujący proces wtrysku, rozpylania i parowania paliwa wraz z towarzyszącymi im zjawiskami turbulentnego przepływu i wymiany ciepła. Model oparty jest na mechanizmie procesu spalania 3Z-ECFM oraz warunkach początkowych i brzegowych, zebranych podczas pomiarów bezpośrednich. Uzyskano pozytywne wyniki walidacji w stosunku do średniego i maksymalnego ciśnienia spalania oraz zawartości tlenu i tlenków azotu w spalinach. Nie uzyskano poprawnych wyników modelowania dla udziałów związków węgla w spalinach.
Źródło:
Combustion Engines; 2016, 55, 2; 60-69
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of the technical condition of a marine diesel engine based on the analysis of the exhaust gases chemical composition
Autorzy:
Krakowski, Rafał
Powiązania:
https://bibliotekanauki.pl/articles/133857.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
technical diagnostics
exhaust composition
engine indication
exhaust gas analysis
marine diesel engine
diagnostyka techniczna
skład spalin
indykowanie silnika
analiza spalin
okrętowy silnik wysokoprężny
Opis:
In the article, the concept of technical diagnostics in relation to marine engines was characterized. The compression ignition piston engine was presented as a diagnostic object. The next part of the article discusses the composition of exhaust gases with particular emphasis on compounds harmful to the environment. The available test methods for exhaust composition are also briefly described by means indication of the engine and exhaust gas analyzer. The reduction of emission of harmful compounds in the exhaust gases is also described in the article. The main part of the article presents the research object, i.e. the marine diesel engine piston and the exhaust gases analyzer, as well as tests carried out. The tests were performed for the engine in working order and inefficient condition in order to compare them with the simulated damages of injection pump and turbocharger. The article was completed conclusions.
Źródło:
Combustion Engines; 2019, 58, 2; 122-126
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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