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    Wyświetlanie 1-8 z 8
    Tytuł:
    Selected problems of real driving emissions measurement
    Autorzy:
    Merkisz, J.
    Pielecha, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/242440.pdf
    Data publikacji:
    2017
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    exhaust emissions
    road test
    real driving emissions
    environmental protection
    Opis:
    The article compares driving test data using the latest legislative proposals applicable to passenger cars. Real Driving Emissions procedures have been introduced in the Commission Regulation (EU) 2016/427. Currently, quantitative RDE requirements have been established to limit emissions from exhaust systems in all operating conditions in accordance with the road emission limits set out in Regulation (EC) No. 715/2007. Several measurements were performed on the same test route in accordance with the RDE test guidelines, which requires a number of criteria to be met. These criteria include the length of the measuring segments, their overall test timeshare, and the dynamic characteristics of the drive. A mobile device for reading the EOBD System information was used to record the engine and vehicle operating parameters during tests. This allowed for the monitoring of parameters such as: load value, engine speed and vehicle velocity. The obtained results were then analysed for their compatibility with the RDE procedure requirements. Despite the same research route, the obtained results were not the same. The analysis also uses the two-dimensional operating time-share characteristics expressed in vehicle velocity and acceleration co-ordinates. As a result, it was possible to compare the dynamic properties, share of operating time and, consequently, to check the validity of conducted drive tests in terms of their practicability and emission values.
    Źródło:
    Journal of KONES; 2017, 24, 3; 189-196
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparative analysis of NEDC and WLTC homologation tests for vehicle tests on a chassis dynamometer
    Autorzy:
    Gis, M.
    Bednarski, M.
    Wiśniowski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/244934.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    combustion engines
    homologation procedure
    NEDC test
    WLTC test
    exhaust emissions
    Opis:
    In 2015, the number of vehicles in the world exceeded 1.1 billion units. In the coming years, it is expected that the largest increase in the number of vehicles will take place in developing countries. This is a problem in particular in terms of emissions of harmful substances from vehicles. Considering that all manufactured vehicle models have to undergo a detailed homologation and meet the exhaust emission requirements before placing on the market, it is necessary to refine test procedures, including test cycles, in which vehicle emissions are determined. At present, the NEDC approval test is valid in Europe. It is a cycle reproduced on a chassis dynamometer in steady conditions. It consists of an urban section repeated four times and an extra urban part. From 2019, a new test procedure will take effect, which uses the WLTC cycle, also reproduced on a chassis dynamometer in fixed conditions. It is much more complex and better reflects the real traffic conditions. For a better illustration of the differences that occur between the current NEDC cycle and the new WLTC, the article presents a comparative analysis of both driving cycles. This is to present the justifiability of using a new driving cycle and to present its complexity. The article presents own research of a vehicle with a spark-ignition engine, which has been tested both in the NEDC and WLTC cycle. On the basis of the obtained data, it was possible to determine the differences in the emission of harmful exhaust gas components and indicate how the new homologation procedure affects the emissions from the vehicle.
    Źródło:
    Journal of KONES; 2018, 25, 3; 189-196
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of the test drive cycle conditions impact on exhaust emissions from an internal combustion engine
    Autorzy:
    Andrych-Zalewska, M.
    Chłopek, Z.
    Merkisz, J.
    Pielecha, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/133164.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    combustion engines
    exhaust emissions
    test drive cycles
    silniki spalinowe
    emisja spalin
    test cyklu jazdy
    Opis:
    Test results of exhaust emission sensitivity to engine operating conditions from a vehicle with a compression ignition engine have been analyzed. These results were determined in driving tests: NEDC (New European Driving Cycle), RDE (Real Driving Emissions) and Malta, an original drive cycle developed at Poznan University of Technology. The tests in the NEDC and Malta cycles were carried out on the engine dynamometer in driving tests simulation conditions, while the RDE test was carried out in the real conditions of passenger car traffic. The mean exhaust emission test results of carbon monoxide, hydrocarbons, nitrogen oxides and carbon dioxide as well as the mean particle number in individual tests have been provided. A high sensitivity of the tested emission values to the changes in engine's operating conditions was found, both for static and dynamic conditions. The strongest impact of engine operating conditions was found for hydrocarbons emissions and the number of particles, followed by carbon monoxide, a smaller impact was found for nitrogen oxides and carbon dioxide. The largest differences in the values characterizing exhaust emissions were found for the NEDC test, which differed the most in dynamic engine operating conditions from other tests that closer resemble real driving conditions of vehicles.
    Źródło:
    Combustion Engines; 2018, 57, 4; 3-9
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The concept of a maintenance-free drive-thru inspection station for commercial vehicles
    Autorzy:
    Brzeżański, Marek
    Mareczek, Michał
    Noga, Marcin
    Powiązania:
    https://bibliotekanauki.pl/articles/2097582.pdf
    Data publikacji:
    2022
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    exhaust emissions
    screening test
    vehicle inspection
    remote sensing
    emisje spalin
    badania przesiewowe
    kontrola pojazdów
    teledetekcja
    Opis:
    The article presents the concept of a maintenance-free inspection station intended for conducting drive-thru tests of commercial vehicles. The main purpose of building this type of diagnostic line is to carry out non-invasive, preliminary tests of heavy-duty vehicles entering the vehicle service area in terms of parameters affecting the safety of their operation in relation to the applicable standards. The main parameter to be assessed will be the concentration of toxic exhaust components, measured using remote sensing methods. In addition, the proposed diagnostic line can be supplemented with additional remote measurement systems, such as, for example, systems for assessing the condition of vehicle lighting, loads on individual axles and individual wheels of the vehicle, tire pressure, thermal load of the brake system, as well as a system for detecting leaks of fluids from the vehicle. Based on the carried out work, it has been shown that using the current specialist knowledge and the components of measurement systems available on the market, it is possible to develop an innovative diagnostic line using remote measurement methods.
    Źródło:
    Combustion Engines; 2022, 61, 1; 35--41
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cold start emissions from a gasoline engine in RDE tests at different ambient temperatures
    Autorzy:
    Kurtyka, Karolina
    Pielecha, Jacek
    Powiązania:
    https://bibliotekanauki.pl/articles/2097463.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    cold start
    RDE test
    exhaust emissions
    ambient temperature
    gasoline engine
    zimny rozruch
    test RDE
    emisja spalin
    temperatura otoczenia
    silnik benzynowy
    Opis:
    The implementation of the 3rd package of the RDE test procedure has extended the test method by considering emissions from a cold start period into the total exhaust emissions from a vehicle. The article presents the research results of exhaust emissions of a vehicle equipped with a gasoline engine. The tests were carried out at two different ambient temperatures, 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 operating parameters and the values of road exhaust emissions during the cold start at two different ambient temperatures. The summary presents the shares of the cold start phase for each exhaust emission compound in the urban part of the test and the entire RDE test, depending on the ambient temperature (8ºC and 25ºC).
    Źródło:
    Combustion Engines; 2020, 59, 2; 24--30
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Current directions in LD powertrain technology in response to stringent exhaust emissions and fuel efficiency requirements
    Autorzy:
    Bielaczyc, P.
    Woodburn, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/133923.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    silnik LD
    technologia napędowa
    emisja spalin
    normy emisji
    WLTP
    RDE
    rzeczywista emisja cząstek
    LD engines
    powertrain technology
    exhaust emissions
    emissions standards
    Worldwide harmonized Light vehicles Test Procedures
    Real Driving Emissions
    Opis:
    The major global automotive markets have all set limits for exhaust emissions from new road vehicles, which have become increasingly stringent over the past few decades. There is also considerable pressure to reduce fuel consumption and CO2 emissions – around 80% of all new passenger cars sold globally are subject to some kind of energy efficiency regulation. Such legal requirements necessitate extensive R&D and testing and the entire field is undergoing a period of rapid change. Despite a recent trend towards harmonisation, at present significant regional differences exist, which vary from the analytical laboratory methods specified, the list of regulated pollutants, the numerical values of the emissions limits and the test cycles employed for engine and chassis dynamometer testing of vehicles and their powertrains. Here the key points are reviewed and strategies and technologies employed to deal with these emissions challenges are discussed. Incoming automotive emissions regulations including the WLTP and Real Driving Emissions are discussed and in conclusion likely directions in powertrain technology are identified.
    Źródło:
    Combustion Engines; 2016, 55, 3; 62-75
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Trends in automotive emissions, fuels, lubricants, legislation and test methods –a global view, with a focus on the EU & US – summary of the 5th International Exhaust Emissions Symposium (IEES)
    Autorzy:
    Bielaczyc, P.
    Woodburn, J.
    Gandyk, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/132954.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    exhaust emissions
    emission standards
    RDE
    Real Driving Emissions
    WLTP
    Worldwide harmonized Light vehicles Test Procedures
    WLTC
    biofuel
    exhaust aftertreatment systems
    fuel
    lubricant
    emisja spalin
    standardy emisji
    rzeczywista emisja cząstek
    biopaliwa
    system oczyszczania spalin
    paliwo
    olej
    Opis:
    The field of vehicular exhaust emissions is experiencing wide-ranging and rapid changes. Air quality is very high on the political agenda and pressure remains to limit and reduce greenhouse gas emissions from the road transport sector. In addition to limits being increasingly stringent, the list of parameters subject to legal limits are slowly expanding – and, most importantly, these limits must be met under a wide wide range of conditions. A range of strategies are available to overcome these difficulties, which was explored during the 5th International Exhaust Emissions Symposium (IEES) hosted at BOSMAL in May 2016. This paper reports and summarises the topics of the 5th IEES and attempts a synthesis on the current status of the field and what the coming years may hold for the automotive and fuel industries and other allied fields.
    Źródło:
    Combustion Engines; 2016, 55, 3; 76-82
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena ekologiczna autobusów komunikacji miejskiej zasilanych gazem ziemnym
    Ecological assessment of city buses powered by natural gas
    Autorzy:
    Gis, W.
    Merkisz, J.
    Pielecha, J.
    Gis, M.
    Jasiński, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/133077.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    ekologia
    emisja spalin
    gaz ziemny
    badanie w rzeczywistych warunkach ruchu
    autobusy komunikacji miejskiej
    ecology
    exhaust emissions
    natural gas
    real drive emission test
    city buses
    Opis:
    Tematyka artykułu dotyczy analizy parametrów ekologicznych autobusów komunikacji miejskiej wyposażonych w silniki spalinowe zasilane paliwem alternatywnym. W artykule przedstawiono wybrane wyniki pomiarów emisji zanieczyszczeń autobusów miejskich przeprowadzonych w dwóch etapach: jazdy standardowej oraz zgodnej z zasadami ecodrivingu. Analiza wyników ma charakter porównawczy dla różnych stylów jazdy autobusów. Podano także charakterystyki udziału czasu pracy w przedziałach: prędkości i przyspieszenia odniesionych do pojazdu oraz prędkość obrotowa wału korbowego i obciążenia odniesionych do silnika. W tych samych przedziałach przedstawiono również charakterystyki emisji mierzonych związków spalin. Wnioski odniesiono głównie do aspektów ekologicznych uzyskanych dla różnych stylów jazdy autobusem miejskim.
    The article concerns the analysis of the environmental performance of public buses equipped with combustion engines powered by alternative fuel. The paper presents selected results of the emission measurement of buses carried out in two stages: normal driving and consistent with the principles of eco-driving. Analysis of the results is a comparison of two different styles of driving. The characteristics of the operating time share have been shown in the coordinates of: speed and acceleration referenced to the vehicle and the rotational speed of the crankshaft and the load referenced to the engine. In the same ranges also the characteristics of measured exhaust compounds are shown. The conclusions are mainly referenced to ecological aspects of different driving styles of city buses.
    Źródło:
    Combustion Engines; 2015, 54, 3; 360-368
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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