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Tytuł:
Comparative analysis of exhaust emissions from passenger cars and motorcycles
Autorzy:
Szymlet, Natalia
Lijewski, Piotr
Rymaniak, Łukasz
Sokolnicka, Barbara
Siedlecki, Maciej
Powiązania:
https://bibliotekanauki.pl/articles/132906.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
combustion engines
passenger car
motorcycle
emission
silniki spalinowe
samochód osobowy
emisja
Opis:
The subject of this article is a comparative analysis of exhaust emissions for: HC (hydrocarbons), CO (carbon monoxide), CO2 (carbon dioxide), NOx (nitrogen oxides) from a passenger vehicle and a motorcycle in laboratory conditions on a dynamometer station. The first vehicle category was represented by a compression-ignition engine with a displacement volume of 1.3 dm3 and a power of 66 kW. The exhaust aftertreatment system included a catalytic converter and a particulate filter. The second category was a motorcycle, equipped with an engine with a displacement of 0.7 dm3 and a maximum power of 55 kW. The two-wheeled vehicle was equipped with a three-way catalytic converter. Speeds were modeled on the European type approval test - NEDC (New European Driving Cycle). In order to conduct a comparative analysis of exhaust emissions and fuel consumption from vehicles of different categories, the obtained results were presented in the form of emissions converted into passenger-kilometers (g/pkm). The research used modern equipment belonging to the PEMS (Portable Emissions Measurement Systems) group of devices. The analyzes carried out enable the decision making on which vehicles have a greater environmental impact due to their exhaust emissions, taking into account the distance and the number of passengers carried.
Źródło:
Combustion Engines; 2019, 58, 2; 19-22
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigations of the influence of engine thermal state on the fuel consumption of passenger vehicles
Autorzy:
Adamski, W.
Polak, S.
Powiązania:
https://bibliotekanauki.pl/articles/133704.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
passenger vehicle
fuel consumption
engine thermal state
samochód osobowy
zużycie paliwa
stan cieplny silnika
Opis:
The paper presents the results of investigations of the fuel consumption of two vehicles performed for non-stabilized engine temperature in the start and warm up phases. The measurements were performed in a wide range of ambient temperatures from –18°C to +25°C. In order to obtain such conditions the tests were carried out in a climate chamber.
Źródło:
Combustion Engines; 2017, 56, 2; 49-52
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cold start emissions of passenger cars with gasoline and diesel engines in Real Driving Emissions tests
Autorzy:
Pielecha, Jacek
Merkisz, Jerzy
Kurtyka, Karolina
Skobiej, Kinga
Powiązania:
https://bibliotekanauki.pl/articles/133895.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
exhaust emission
passenger cars
Real Driving Emissions
emisja spalin
samochody osobowe
rzeczywiste emisje z jazdy
Opis:
Modernization of passenger cars and constant development of existing legislation lead to a reduction of exhaust emissions from these vehicles. In accordance with package 3 of the RDE test procedure, the European Commission has extended testing methods by including exhaust emissions during a cold start. The article compares the research results on the impact of ambient temperature during the cold start of spark-ignition and compression-ignition engines in road emission tests. The tests were carried out in line with the requirements of the RDE test procedure for passenger cars meeting the Euro 6d-Temp emissions standard. The obtained results were analyzed, i.e. there were compared the engine and vehicle operation parameters and the values of road exhaust emissions, during the cold start of gasoline and diesel engines at the ambient temperature of approximately 25°C. The summary presents the share of cold start phase of a passenger car (at the ambient temperature of around 25°C) for each exhaust emission compound in the urban part of the test, and in the entire RDE test, depending on the engine type used.
Źródło:
Combustion Engines; 2019, 58, 4; 160-168
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Propozycja testu RDE dla samochodów osobowych o napędzie hybrydowym
The proposal of RDE test for passenger cars with hybrid drive
Autorzy:
Merkisz, J.
Pielecha, J.
Molik, P.
Powiązania:
https://bibliotekanauki.pl/articles/134180.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
emisja spalin
testy drogowe
samochody osobowe
exhaust emission
road tests
passenger cars
Opis:
Priorytetem działań Unii Europejskiej na rzecz ochrony środowiska jest ocena emisji zanieczyszczeń w rzeczywistych warunkach ruchu pojazdów. Procedury takiej oceny opracowano dla pojazdów ciężkich i pojazdów pozadrogowych, natomiast brak jest unormować prawnych takiej oceny dla pojazdów lekkich (samochodów osobowych). W związku z tym, w artykule podano propozycję metodyki opracowania testów kontrolnych badań emisji zanieczyszczeń z samochodów osobowych. Do analizy wybrano samochody osobowe o napędzie hybrydowym, gdyż jest to najszybciej rozwijająca się grupa pojazdów o największych walorach ekologicznych, a jednocześnie najmniejszym przebiegowym zużyciu paliwa, spełniająca najnowsze normy emisji spalin. Według autorów koncepcja opracowania testów dla samochodów osobowych powinna opierać się następujących przesłankach: wyznaczeniu spójnego obszaru pracy silnika dla wybranych pojazdów osobowych, w taki sposób, aby w największym stopniu odpowiadał najczęstszym warunkom ruchu oraz określeniu parametrów mierzonych pod-czas testów drogowych i uzyskiwanych wskaźnikach emisji. W artykule przedstawiono procedurę wyznaczenia warunków pracy silników spalinowych, co w efekcie umożliwiło zaproponowanie testu RDE dla samochodów osobowych o napędzie hybrydowym.
The priority of the European Union operation is protecting the environment by evaluating emissions under real operating conditions. The procedures have been developed for the assessment of heavy vehicles and off-road vehicles, however there is no legal rules for such evaluation for light vehicles (passenger cars). The article contains, proposal for develop a test methodology for control of emissions from passenger cars. Hybrid vehicle was selected for analysis, because it is the fastest growing group of vehicles with the highest ecological value, while the smallest fuel consumption that meets the latest emission standards. The concept of designation of the road test for passenger cars should be based on the following considerations: the appointment of a consistent engine operating range for selected cars, in such a way that the greatest corresponded most frequent in real conditions and the parameters measured during the road test and obtained emission factors. The paper presents a procedure for the designation of the operating conditions of internal combustion engines, which enabled to propose RDE test for hybrid vehicles.
Źródło:
Combustion Engines; 2015, 54, 3; 369-375
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Koncepcja testu badawczego emisji spalin dla samochodów osobowych w rzeczywistych warunkach ruchu
Concept test of research exhaust emissions for passenger cars in real traffic conditions
Autorzy:
Merkisz, J.
Molik, P.
Pielecha, J.
Powiązania:
https://bibliotekanauki.pl/articles/133236.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
emisja spalin
testy drogowe
samochody osobowe
exhaust emissions
road tests
passenger cars
Opis:
W artykule przedstawiono wstępną koncepcję opracowania testu badawczego wykorzystywanego w pomiarach emisji spalin w rzeczywistych warunkach ruchu dla pojazdów osobowych. Podstawą podjęcia pracy był brak rozwiązań prawnych, dotyczących określania poziomu ekologiczności pojazdów lekkich – w przeciwieństwie do pojazdów ciężkich, dla których takie regulacje już określono. Podstawą opracowania będzie porównanie testów emisyjnych wykorzystywanych w badaniach homologacyjnych samochodów osobowych, a jednocześnie synteza wyników uzyskanych w różnych warunkach badań drogowych. Zamierzeniem jest opracowanie testu, umożliwiającego ocenę ekologiczną pojazdu w rzeczywistych warunkach ruchu, gdzie ograniczeniami będzie tylko rodzaj napędu (silnik ZI, ZS, pojazd hybrydowy), co jest zgodne z wymaganiami badań homologacyjnych. Efektem powinny być założenia do opracowania testu pod względem: czasu trwania, określenia warunków pracy silnika i pojazdu oraz propozycji dopuszczalnych wartości emisji spalin.
This paper presents the preliminary concept research to develop the test used in the measurement of emissions in real traffic conditions for passenger vehicles. Work based on the lack of legal solutions for determining the environmental performance of light vehicles – as opposed to heavy-duty vehicles for which such regulations have specified. The elaboration is to compare the emission test used in clinical approval of passenger cars, while the synthesis of the results obtained under different conditions road tests. The intention is to develop a test for assessing the ecological vehicle in real traffic conditions, where restrictions will only drive type (gasoline engine, diesel engine, hybrid vehicle), which is consistent with the requirements of the certification tests. The result should be the foundation for the development of the test in terms of: the duration, to determine the operating conditions and vehicle and proposals for emission limit values.
Źródło:
Combustion Engines; 2013, 52, 3; 332-337
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selected remarks about RDE test
Autorzy:
Merkisz, J.
Pielecha, J.
Powiązania:
https://bibliotekanauki.pl/articles/133698.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
exhaust emission
passenger cars
real driving tests
emisja spalin
samochody osobowe
Opis:
New test procedures for determining exhaust emission from passenger vehicles will be introduced in 2017. For several years, the European Commission has been developing new procedures, which aim is to perform tests in road conditions. The purpose is to determine the real values of emissions, which are not always reflected by the level of emissions obtained in the laboratory. Proper and accurate procedures for determining emissions in real traffic conditions (RDE – Real Driving Emission) have not yet been approved (as opposed to Heavy Duty Vehicles for which such conditions already exist), but there are proposals that are currently being analyzed by major research centers in Europe. There are many differences between those proposals such as determining road emission or research methodology related to emission measurement of hydrocarbons. The work compares the results of emissions measured in road tests using the latest legislative proposals related to passenger cars. The results are shown in relation to the used measurement method: classic method of determining exhaust emission; uses all measurement data determining the mass of harmful compounds and distance travelled during the test; method of averaging the measuring windows (MAW – moving average windows), also in the literature called EMROAD method, which determines the measurement windows (on the basis of carbon dioxide emissions from the WLTC test) and on its basis determines the road emission in RDE test; generalized method of instantaneous power (Power Binning), known in the literature as CLEAR – Classification of Emissions from Automobiles in Real driving, determines road emissions on the basis of generalized instantaneous power during the RDE test.
Źródło:
Combustion Engines; 2016, 55, 3; 54-61
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Combination of LNT and SCR for NOx reduction in passenger car applications
Autorzy:
Maunula, T.
Powiązania:
https://bibliotekanauki.pl/articles/134216.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
NOx
Selective Catalytic Reduction
SCR
LNT
catalysts
diesel
selektywna redukcja katalityczna
katalizator
Opis:
The removal of NOx and particulate emissions in light-duty diesel vehicles will require the use of aftertreatment methods like Diesel Particulate Filters (DPF) and Selective Catalytic Reduction (SCR) with urea and Lean NOx Trap (LNT) (Euro 6 and beyond). A new concept is the combination of LNT + SCR, which enables on-board synthesis of ammonia (NH3), which reacts with NOx on the SCR catalyst. The main application for this kind system will be lighter passenger cars, where LNTs may be used instead of full urea-SCR system. That particular combinatory system was investigated by developing platinum (Pt) and rhodium (Rh) containing LNTs and SCR catalysts in this study. In the use conditions, the maximum temperature may reach temperatures up to 800°C and NOx reduction reactions should proceed without NO2 assistance in the SCR position after LNT and DPF. PtRh/LNT with the total loadings of 85 g/cft (2.8 g/L) and higher resulted in a high NOx efficiency above 80–90% with a broad operation window in the laboratory simulations. In the experimental conditions, a higher NH3 concentration after LNT was essential to simulate well the operation of SCR catalysts. The developed Cu-SCR catalyst showed a high hydrothermal durability up to the ageing temperature of 800°C and a wide operation window without the NO2 assistance (NO only in feed). Fe-SCR and V-SCR catalysts were more dependent on NO2. A studied concept had an air injection after LNT to keep SCR condition always in lean side, where the SCR reaction was promoted by oxygen resulting in high reduction selectivity to nitrogen (N2) without NH3 emissions. The simulations in reaction conditions and system design resulted in the proposals for the optimal design and main reaction mechanism in DOC + DPF + LNT + SCR systems.
Źródło:
Combustion Engines; 2014, 53, 2; 60-67
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy conversion in motor vehicles
Autorzy:
Szałek, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/2097477.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
passenger vehicle propulsion systems
chain of energy transformations
energy conversion efficiency
układy napędowe pojazdów osobowych
łańcuch transformacji energii
sprawność konwersji energii
Opis:
The portfolio of the automotive market appears more and more low-emission and zero-emission propulsions in vehicles. This is the result of measures taken to limit or even eliminate the emission of harmful substances into the atmosphere generated by vehicles. The article covers issues related to energy conversion in automotive drive systems currently offered by automotive manufacturers. Standard, hybrid, hybrid plug-in, electric and fuel cells drive system were analyzed. Attention was drawn to the chain of energy transformations related to each of the analyzed drive systems. The efficiency of the presented vehicle drive systems was analyzed. General conclusions were formulated regarding the method of analyzing energy changes related to the operation of automotive propulsion systems. The article reviewed selected author's own works on hybrid and hydrogen propulsion.
Źródło:
Combustion Engines; 2020, 59, 4; 50--57
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methodological basis of road acoustic researches
Autorzy:
Batura, Karolina Paula
Waligórski, Marek
Powiązania:
https://bibliotekanauki.pl/articles/2097516.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
acoustic screen
passenger car
combustion engine
health
noise assessment
ekran akustyczny
samochód osobowy
silnik spalinowy
zdrowie
ocena hałasu
Opis:
Transport is one of the most burdensome negative sources affecting the natural environment. Long-term exposure of the body to exhaust pollution can cause health problems and, in the worst case, even lead to death. In addition to exhaust emissions, traffic noise is another equally important issue. Due to its nature, variability over time or the design diversity of vehicles in the traffic flow, it is a phenomenon difficult to define. Like exhaust pollution, it affects people's health and quality of life. In addition to its direct impact on the human physical system, it can also cause psychosomatic disorders, which is why a detailed analysis of road noise taking into account the real operation of the vehicle is so important. The paper presents the basic concepts related to the problem of traffic noise in the world, determines the sources of noise in vehicles and the methodology of conducting acoustic road tests. At the final stage of the scientific paper, methods of reducing excessive noise levels in large urban agglomerations were also presented, and the effectiveness of using noise barriers on selected parts of the city road network using proprietary acoustic tests was assessed.
Źródło:
Combustion Engines; 2021, 60, 2; 32--38
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Highest efficiency and ultra low emission - internal combustion engine 4.0
Autorzy:
Friedl, Hubert
Fraidl, Günter
Kapus, Paul
Powiązania:
https://bibliotekanauki.pl/articles/2097449.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
passenger car
gasoline
diesel
hybrid
powertrain
samochód osobowy
benzyna
hybryda
układ przeniesienia napędu
Opis:
In the future, the simultaneous reduction of pollutant and CO2 emissions will require significantly enhanced powertrain functionalities that cannot only be adequately represented by the ICE (internal combustion engine) alone. Both automated transmissions and especially powertrain electrification can help to meet efficiently those extended requirements. The extended functionalities are no longer applied exclusively with the ICE itself ("Fully Flexible Internal Combustion Engine"), but distributed across the entire powertrain ("Fully Flexible Powertrain"). In addition, the powertrain will be fully networked with the vehicle environment and thus will utilize all data that are useful for emission and consumption-optimized operation of the ICE. Combustion engine and electrification often complement each other in a synergetic way. This makes it extremely sensible for the combustion engine to evolve in future from a "single fighter" to a "team player". If one compares the requirements of such an ICE with the definition of Industry 4.0, then there are extensive correspondences. Thus, it seems quite opportune to call such a fully networked combustion engine designed to meet future needs as “Internal Combustion Engine 4.0 (ICE 4.0)”. This even more so, as such a name can also be derived from the history: e.g. ICE 1.0 describes the combustion engines of the first mass-produced vehicles, ICE 2.0 the combustion engines emission-optimized since the 1960s and ICE 3.0 the highly optimized "Fully Flexible Combustion Engine", which currently offers a high torque and performance potential combined with low fuel consumption and pollutant emissions. In addition to further improvements in fuel consumption, the "Combustion Engine 4.0" offers such a low level of pollutant emissions that can best be described as "Zero Impact Emission". This means that such future ICE´s will no longer have a negative impact on the imission situation in urban areas. With the e-fuels topic, the ICE also has the potential to become both CO2- and pollutant-neutral in the medium and long term. This means that the ICE - also in passenger cars - will continue to be an essential and necessary cornerstone for future powertrain portfolios for the next decades.
Źródło:
Combustion Engines; 2020, 59, 1; 8--16
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of processes in the WLTC test of a passenger car with a diesel engine
Autorzy:
Andrych-Zalewska, Monika
Powiązania:
https://bibliotekanauki.pl/articles/24202473.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
diesel engine
exhaust emission
WLTC test
silnik diesla
emisja spalin
test WLTC
Opis:
The test results and their analysis was discussed in this article. The tests were carried out in accordance with the WLTP (Worldwide Light Duty Test Procedure), on a passenger car with a compression ignition engine. The analysis was conducted doe the following variables: vehicle speed, exhaust emission rate and fuel consumption volumetric rate. The subject of the research are exhaust emission components that are harmful to the health of living organisms: carbon monoxide, hydrocarbons and nitrogen oxides, as well as greenhouse gases. The research results have shown a very large range of values for carbon monoxide, organic compounds and nitrogen oxides emission rate characteristics. The average distance-specific emissions values of carbon monoxide, organic compounds and nitrogen oxides were very small and were in line with the Euro 6 requirements within a large margin. Correlation studies of the measured variables were conducted - between vehicle speed and exhaust emission rate as well as volumetric fuel consumption rates, and between exhaust emission rates and volumetric fuel consumption rates. The correlation studies have shown that the highest coefficient of determination in relation to vehicle speed was found for volumetric fuel consumption and carbon dioxide emission rate, and the weakest correlation for carbon monoxide emission rate and nitrogen oxides emission rate. The correlation between the rate of volumetric fuel consumption and carbon dioxide emission, as well as for hydrocarbon emission and methane emission rates, was found to be the strongest. The carbon monoxide emission rate was the least correlated with all the other measured variables. Dimensionless statistical characteristics of the measured variables were determined, such as: extreme values, range, mean value, median, standard deviation, kurtosis, skewness and coefficient of variation. For all of them, the mean value was much greater than the median, and the standard deviation was greater still, than both of those values. The numerical distributions for the values of exhaust emission rate and volumetric fuel consumption turned out to be leptokurtic and have right-sided asymmetry. The coefficient of variation analysis made it possible to assess that the most dynamic properties could be observed in organic compounds emission rate, followed by carbon monoxide and nitrogen oxides emission rates, and finally - the vehicle speed. Histograms of the examined processes were determined. The vehicle speed histogram was characterized by relative uniformity apart from the dominance of the idle speed. Histograms of exhaust emission rate variables were most frequently dominated by small values. The zero values occurred less frequently for the fuel consumption volumetric rate histogram. Based on the conducted research and the obtained data, a set of conclusions was drawn.
Źródło:
Combustion Engines; 2023, 62, 3; 52--62
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Observations from PEMS testing of combustion engines of different applications
Autorzy:
Merkisz, J.
Pielecha, J.
Powiązania:
https://bibliotekanauki.pl/articles/133975.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
exhaust emission
passenger cars
road tests
Real Driving Emissions
emisja spalin
samochody osobowe
testy drogowe
rzeczywista emisja cząstek
Opis:
The article compares data obtained in road tests with the latest legislative proposals relating to various applications of internal combustion engines. Passenger car emission tests have been performed several times on the same test route in accordance with the RDE procedure guidelines, for which a dozen or so criteria must be met, including the distance of each of the drive sections, their in the drive time and the dynamic characteristics of the drive. The analysis was also based on a two-dimensional operating density characterization, presented in the vehicle speed-acceleration coordinates. As a result, it was possible to compare dynamic properties, operating time density and, thus, to check the validity of conducted drive tests in terms of their feasibility and emission values. An exhaust emission related comparison of three types of powertrain have been presented: gasoline, diesel and hybrid in the RDE tests. The authors proposed a new form of presenting the road exhaust emissions results in relation to the carbon dioxide emission, referred to as a standardization of the emission results. The exhaust emissions from city buses fitted with different powertrains tested on an actual bus route and in the SORT test were also compared.
Źródło:
Combustion Engines; 2018, 57, 3; 40-55
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ecological comparative assessment of selected materials used for the construction of spark ignition engines
Autorzy:
Mrozik, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/2097475.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
engine
passenger car
life cycle analysis
eco-design
environmental protection
silnik
samochód osobowy
analiza cyklu życia
ekoprojektowanie
ochrona środowiska
Opis:
The aim of the article is to present the environmental effects of changes in material composition in selected internal combustion engines used in passenger cars using LCA analysis. The levels of energy consumption and emissions of pollutants related to material inputs occurring at the stage of engine production have been determined. The simplified LCA model presented in the paper shows the energy consumption and total CO2 and SO2 emissions on the basis of the mass of materials from which the engine is made. The research results presented in the paper give a picture of a modern passenger car engine on the basis of wear and the degree of recovery of materials used for its construction.
Źródło:
Combustion Engines; 2020, 59, 4; 11--14
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Calibration of micro-simulation model in assessment of passenger car exhaust emission during acceleration
Autorzy:
Nowak, Mateusz
Powiązania:
https://bibliotekanauki.pl/articles/2097650.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
exhaust emission
simulation
vehicle acceleration
model calibration
acceleration dynamics
emisja spalin
symulacja
przyspieszenie pojazdu
kalibracja modelu
dynamika przyspieszenia
Opis:
In terms of simulation research, it is important to simulate real conditions as precisely as possible. This type of approach makes it possible to minimize the error in the obtained results. The dynamics of acceleration is one of the most important factors having a direct impact on fuel consumption and exhaust emissions from vehicles. The work was carried out with the use of PTV Vissim microscopic vehicle motion simulation software. The considerations were carried out on theoretical acceleration profiles with different dynamics values and the actual character of acceleration, recorded during road tests. The simulations were carried out for a car powered by spark-ignition and compression-ignition engines. The research showed that the calibration of the acceleration character of the vehicle in simulation tests may result in significant differences in obtained results of exhaust emissions.
Źródło:
Combustion Engines; 2022, 61, 2; 54--59
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
FEV HiFORS: A new passenger car Diesel injector with continuous rate shaping for 2500 bar injection pressure
Autorzy:
Grzeschik, P.
Laumen, H.-J.
Powiązania:
https://bibliotekanauki.pl/articles/133128.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
diesel injection system
injection hydraulics
mixture formation
system wtryskowy
diesel
hydraulika wtrysku
Opis:
This paper presents the HiFORS continuously rate shaping injector for injection pressures of 2500 bar and above developed by FEVGmbH and the Institute for Combustion Engines, RWTH Aachen University. The development process from concept definition to hydraulic and deisgn layout, material choice and manufacturing is discussed. The hydraulic operating properties are verified by injection test rig investigations. Optical investigations are conducted in an optically accessible high pressure, high temperature chamber using shadowgraphy and OH chemoluminescence detection, thereby capturing both liquid and gaseous penetration as well as combustion areas. Single cylinder investigations are carried out at a 0.4 dm3 research engine in different operating points from low part load to full load. Compared to a serial production piezo injector, base measurements using conventional square injection profiles already show reduced combustion noise at improved NOx-soot trade-off as well as lowered HC and CO emissions. Detailed investigations at part load operating points explore the potential of different continuous rate shaping patterns, while the injector’s high injection pressure capability of up to 2500 bar and its influence on engine performance is tested at full load operation points.
Źródło:
Combustion Engines; 2014, 53, 2; 36-44
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 40

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