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1

Research on the results of the WLTP procedure for a passenger vehicle

Andrych-Zalewska Monika, Chłopek Zdzisław, Merkisz Jerzy, Pielecha Jacek

Eksploatacja i Niezawodność

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2024

|

Vol. 26, no. 1

art. no. 176112

EN

The article considers variables registered in the WLTP procedure. The test results of a passenger car with a compression-ignition engine have been analysed. The tests were carried out on a chassis dynamometer. The tests were performed for engine cold start and ran up to the point of reaching stabilized operating conditions. The average specific distance emissionsand volumetric fuel consumption were assessed for individual test phases as well as for the entire test. It was found that the results in the first test phase, which corresponded to the engine cold start up to stabilized operating conditions, had the mostsignificant impact on the overall exhaust emission and fuel consumption results in the test. The specific distance emissions of carbon monoxide, non-methane hydrocarbons and nitrogen oxides were by far the highest in the first phase of the test. In the fourth phase of the test, the specific distance emissions of methane and carbon dioxide turned out to be the highest, as well as the operational volumetric fuel consumption being the highest.

2

Laboratory and on-road characterization of exhaust emissions from plug-in hybrid vehicles at multiple battery states of charge conditions

Woodburn Joseph, Bielaczyc Piotr, Merkisz Jerzy, Pielecha Jacek

Transport Problems

|

2023

|

T. 18, z. 4

99--112

EN

This paper discusses emissions from plug-in hybrid vehicles under various driving scenarios and reports experimental data obtained under laboratory and real-world conditions. Two European plug-in hybrid passenger cars were tested using the two test types in use in the EU (chassis dynamometer and on-road), with some modifications. The best-case and near-worst-case battery states of charge were used for testing. Behavior in terms of CO2 emissions, regulated emissions, and unregulated emissions was characterized and analyzed. Differences were generally much greater for on-road testing, especially for urban driving, during which the potential for purely electrical propulsion of the vehicle is greatest. The long distances covered by current EU legislative test procedures limit the impacts of some effects. Regardless of the traction battery’s state of charge, regulated emissions were well below the applicable EU limits under all driving conditions - for example, combined emissions of reactive nitrogen compounds (nitrogen oxides, ammonia, and nitrous oxide) were consistently < 10 mg/km when tested under laboratory conditions. The two vehicles tested showed that the state of the battery had a large impact on the proportion of electrical propulsion and the resulting CO2 emissions, but differences in regulated pollutants decrease with increasing distance and are generally relatively limited for longer journeys, which include non-urban driving.

3

Comparison of exhaust emission results obtained from Portable Emissions Measurement System (PEMS) and a laboratory system

Adamiak Borys, Szczotka Andrzej, Woodburn Joseph, Merkisz Jerzy

Combustion Engines

|

2023

|

R. 62, nr 4

128--135

EN

Exhaust emissions testing of vehicles under real driving conditions (real driving emissions, RDE) using portable exhaust emissions measurement systems (PEMS) was introduced a few years ago by the European Commission as a mandatory test during type approval and later also for in-service conformity. This paper compares results from mobile systems for measuring exhaust gas emissions (PEMS) with a stationary laboratory (BOSMAL’s Exhaust Emissions Testing Laboratory). The tests were carried out using a passenger car equipped with a spark ignition engine, which was tested on a chassis dynamometer over the WLTC cycle. The results showed that the differences between PEMS analysers and stationary analysers range from a few percent to a dozen or so percent, depending on the component and the measurement method.

4

Numerical methodology for evaluation the combustion and emissions characteristics on WLTP in the light duty dual-fuel diesel vehicle

Kneba Zbigniew, Stepanenko Denys, Rudnicki Jacek

Combustion Engines

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2022

|

R. 61, nr 2

94--102

EN

The worldwide aim of reducing environmental impact from internal combustion engines bring more and more stringent emission regulations. In 2017 by EU has been adopted new harmonized test procedure called WLTP. In general terms this test was designed for determining the levels of harmful emissions and fuel consumption of traditional and hybrid cars. This procedure contains specific driving scenarios which representing real-life driving patterns. Test cycles contain vehicle velocity versus time profiles and directly in powertrain analysis on the test benches cannot be used. In order to back calculate drive cycles to engine rpm versus torque profiles a simple longitudinal vehicle dynamics method was used in this paper. Moreover, in order to determine most representative engine operation points during WLTP a density based grid clustering method was implemented. The experimental part of the study focuses on the comparative evaluation of the effect of various diesel to LPG substitution ratios (0% LPG, 10% LPG, 20% LPG and 30% LPG) on combustion and emission characteristics of dual-fuel diesel engine.

5

A Comparative Analysis of Approval Driving Tests in the Context of Carbon Dioxide Emissions on the Example of Selected Passenger Cars

Tucki Karol, Mruk Remigiusz, Botwińska Katarzyna, Mieszkalski Leszek, Kulpa Krzysztof

Rocznik Ochrona Środowiska

|

2020

|

Tom 22, cz. 2

859--879

EN

This paper presents a comparison of two approval tests for a passenger car, both the current procedure and its predecessor. The car that was the subject of the study received a roadworthiness certificate based on the NEDC test, however, the emission results were compared with the new test procedure. The analysis showed the significance of the "start-stop" system in the conducted tests, however, assuming the original equipment of the car (active "start-stop" system), the WLTP test showed higher CO2 emissions, which did not exceed the permissible emission standard for this model specified in the relevant regulation.

PL

Niniejsza praca przedstawia porównanie dwóch testów homologacyjnych dla samochodu osobowego, zarówno aktualnie obowiązującą procedurę jak i jej poprzednika. Samochód, który był obiektem badań, świadectwo dopuszczenia do ruchu otrzymał na podstawie testu NEDC, jednakże porównano wyniki emisji z nową procedurą testową. Dokonana analiza wykazała istotność systemu „start-stop” w przeprowadzonych badaniach, zakładając jednak oryginalne wyposażenie auta (aktywny układ start-stop) test WLTP wykazał wyższą emisję CO2, jednakże nie przekroczyła ona dopuszczalnej dla tego modelu normy emisyjności określonej w stosownych przepisach.

6

Overview of the light-duty vehicles tailpipe emissions regulations in the European Union: status and upcoming type-approval and market surveillance schema

Valverde-Morales Víctor

Combustion Engines

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2020

|

R. 59, nr 1

3--7

EN

In order to curb pollutant emissions from light-duty vehicles in the European Union, a set of complex regulations have been approved in the recent years (2016-2018) including more stringent emissions tests, independent in-service conformity checks, and a novel type-approval framework which includes market surveillance provisions to complement the type-approval requirements. Tailpipe emissions will need to meet stringent emission limits before entering the market at type-approval and at the end of the production line, as well as during their normal life under normal conditions of use. This contribution aims at providing a comprehensive but synthetic analysis of the current regulatory context in the EU.

7

Jak zmarnować więcej paliwa?

Chciuk Ryszard

Surowce i Maszyny Budowlane

|

2019

|

nr 2

78--81

PL

Kałuża śmierdzącego, żółtawego płynu sięgnęłaby nam do kostek, gdyby cały olej napędowy, który zużywamy w Polsce w ciągu roku, rozlał się na powierzchni kraju nad Wisłą. Spalając dwadzieścia miliardów litrów tej trucizny, uwolnimy z niej olbrzymią pożyteczną energię. Jednocześnie „wzbogacimy" atmosferę Ziemi o pięćdziesiąt milionów ton dwutlenku węgla (CO2), którego negatywny wpływ na klimat jest potwierdzony. Potrzeba naprawdę bardzo dużo drzew, które by trochę tego gazu zmagazynowały w trakcie fotosyntezy (jeden hektar lasu sosnowego może pochłonąć 20-30 ton CO2 rocznie). Do powietrza dostanie się również niezliczona ilość substancji szkodliwych dla wszystkich żywych istot.

8

The legitimacy of using hybrid vehicles in urban conditions in relation to empirical studies in the WLTC cycle

Orliński Piotr, Gis Maciej, Bednarski Mateusz, Novak Nejc, Samoilenko Dmytro, Prokhorenko Andriy

Journal of Machine Construction and Maintenance - Problemy Eksploatacji

|

2019

|

no. 1

25--30

EN

Air pollution in cities is an increasing problem. The increased concentration of toxic harmful substances, including PM10 and PM2.5, is noticeable in the autumn and spring period. This is when the heating period begins. However, the industrial sector is not always responsible for air pollution. Transport also has its share. The share of transport depends on the terrain and buildings. The lack of proper air flow causes emitted suspended dust and other particulates to remain above the city creating smog. In Poland, there are up to 40,000 deaths per year because of PM10 and PM2.5 emissions. The same problem applies to other European cities. Therefore, it is necessary to take specific measures to limit as much as possible the emission of toxic substances. In the case of activities in the transport sector, several solutions are possible. One of them is the use of vehicles with alternative power systems. In the short-term, it is reasonable to use hybrid alternative drives. In order to verify the advantages of using vehicles with hybrid systems, the authors of the article performed comparative tests on a chassis dynamometer. The objects of the study were two vehicles - one with a classic propulsion system and the other with a hybrid system in the current WLTC homologation cycle (WLTP procedure).

PL

Zanieczyszczenie powietrza w miastach stanowi coraz większy problem. Zwiększone stężenia toksycznych szkodliwych substancji, w tym PM10 i PM2.5, jest zauważalne jesienią i wiosną. Jest to początek okresu grzewczego. Jednak sektor przemysłowy nie zawsze jest odpowiedzialny za zanieczyszczenie powietrza. Transport ma również swój udział. Udział transportu zależy od terenu i budynków. Brak odpowiedniego przepływu powietrza powoduje emisję między innymi zawieszonego pyłu, który pozostaje nad miastem, tworząc smog. W Polsce umiera do 40 000 osób rocznie z powodu PM10 i PM2,5. Ten sam problem dotyczy innych miast europejskich. Dlatego konieczne jest podjęcie szczególnych środków w celu ograniczenia w jak największym stopniu emisji toksycznych substancji. W przypadku działań w sektorze transportu możliwe są różne rozwiązania. Jednym z nich jest wykorzystanie pojazdów z alternatywnymi systemami energetycznymi. W perspektywie krótkoterminowej rozsądne jest stosowanie hybrydowych alternatywnych napędów. Aby zweryfikować zalety stosowania pojazdów z układami hybrydowymi, autorzy artykułu przeprowadzili testy porównawcze na hamowni podwoziowej. Przedmiotem badań były dwa pojazdy - jeden z klasycznym układem napędowym, a drugi z układem hybrydowym, w aktualnym cyklu homologacji WLTC (procedura WLTP).

9

The comparison of harmful substances emission from flex-fuel vehicle during NEDC and WLTC test cycles

Kruczyński Stanisław, Gis Wojciech, Zin Dariusz

Combustion Engines

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2019

|

R. 58, nr 4

156--159

EN

The beginning of this article describes the NEDC and WLTC test cycles and basic differences between them. The following presents, the test stand and test objects, which were bioethanol fuels E10, E40 and E85. At the end were presented and discussed results of tests of these fuels in the flex-fuel vehicle in NEDC and WLTC test cycles.

10

Exhaust emission testing methods - BOSMAL’s legislative and development emission testing laboratories

Bielaczyc Piotr, Klimkiewicz Dariusz, Woodburn Joseph, Szczotka Andrzej

Combustion Engines

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2019

|

R. 58, nr 3

88--98

EN

The latest legislation regarding the reduction of harmful exhaust emissions, greenhouse gases and fuel consumption determines not only maximum permissible emissions factors, but also emissions testing methods and laboratory design and additionally leads to the development of new research methods. BOSMAL has risen to meet these challenges by investing in an updated, state-of-the-art emissions testing laboratory, housed within a climate chamber and in parallel investing in a completely new laboratory designed with incoming and future legislative requirements in mind. This paper presents BOSMAL’s improved M1/N1 vehicular emissions and fuel consumption laboratory in a climatic chamber and BOSMAL’s standard chamber for the testing of vehicles in accordance with European Union, US and Japanese standards. The specifications, capabilities and design features of the sampling, analysis and development research possibilities and climate simulation systems are presented and discussed in relation to the increasing drive for cleaner, light duty road vehicles (including hybrids and electric vehicles). The recently-renovated laboratory with extended standard temperature range and the laboratory with climatic chamber are described in the context of the newest European Union legislation on the emission in the range of Euro 6d testing requirements. The laboratories permit BOSMAL’s engineers to compete in the international automotive arena in the development of new, more ecologically friendly and increasingly fuel efficient vehicles.

11

Comparative tests of a passenger car with compression ignition engine on chassis dynamometer during NEDC and WLTC tests and during RDE road test

Gis Wojciech, Gis Maciej, Wiśniowski Piotr, Bednarski Mateusz

Combustion Engines

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2019

|

R. 58, nr 3

228--234

EN

Air pollution is a challenge for municipal authorities. Increased emission of PM10 and PM2.5 particles is particularly noticeable in Poland primarily the autumn and winter period. That is due to the start of the heating season. According to the above data, road transport accounted for approximately 5% of the creation of PM10 particles, ca. 7% of PM2.5 and approximately 32% for NOx. In Poland, suspended particles (PM10 and PM2.5) cause deaths of as many as 45,000 people a year. The issue of smog also affects other European cities. Therefore, it is necessary to undertake concrete efforts in order to reduce vehicle exhaust emissions as much as possible. It is therefore justifiable to reduce the emission of exhaust pollution, particularly NOx, PM, PN by conventional passenger cars powered by compression ignition engines. Emissions by these passenger cars have been reduced systematically. Comparative tests of the above emission of exhaust pollution were conducted on chassis dynamometer of such passenger car in NEDC cycle and in the new WLTC cycle in order to verify the level of emissions from this type of passenger car. Measurements of fuel consumption by that car were also taken. Emission of exhaust pollution and fuel consumption of the this car were also taken in the RDE road test.

12

Gearshift strategy in the worldwide harmonized light vehicles test procedure

Lasocki J.

Zeszyty Naukowe Instytutu Pojazdów / Politechnika Warszawska

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2018

|

z. 1/115

113--123

EN

The article discusses the method of determining gearshift sequence according to the WLTP (Worldwide harmonized Light vehicles Test Procedure) used for vehicles testing on a chassis dynamometer. The necessary input data is listed and a detailed calculation scheme is presented. As an example of the application of the discussed method, a gearshift sequence for a passenger car with a compression ignition engine was determined. The calculations were made for the vehicle speed course as in the WLTC (Worldwide harmonized Light vehicles Test Cycle) and, for comparison, as in the NEDC (New European Driving Cycle). The most important differences in the results obtained using both methods were indicated.

PL

W artykule omówiono metodę wyznaczania strategii zmiany biegów według światowej ujednoliconej procedury badań pojazdów lekkich WLTP (Worldwide harmonized Light vehicles Test Procedure), stosowaną do badań pojazdów na hamowni podwoziowej. Wyszczególniono niezbędne dane wejściowe i przedstawiono szczegółowy schemat obliczeń. Jako przykład zastosowania metody wyznaczono sekwencję zmiany biegów dla samochodu osobowego z silnikiem o zapłonie samoczynnym. Obliczenia wykonano dla przebiegu prędkości pojazdu w cyklu jezdnym WLTC (Worldwide harmonized Light vehicles Test Cycle) oraz, dla porównania, w cyklu jezdnym NEDC (New European Driving Cycle). Wskazano najważniejsze różnice w wynikach uzyskanych przy zastosowaniu obydwu metod.

13

Analiza wielkości emisji spalin z silnika o zapłonie samoczynnym z wykorzystaniem symulacji komputerowej

Tucki K., Mruk R., Bączyk A., Botwińska K., Woźniak K.

Rocznik Ochrona Środowiska

|

2018

|

Tom 20, cz. 2

1095--1112

PL

W pracy przedstawiono symulacje emisyjności cząstek stałych i całkowitej zawartości węglowodorów na przykładzie silnika o zapłonie samoczynnym 1.3 Multijet w samochodzie osobowym Fiat Panda. Analizie poddano wyniki pozyskanych zawartości masowych w odniesieniu do testów, paliw oraz aktywności układu start/stop w pojeździe. Próby zostały wykonane dla dwóch typów zasilania: olejem napędowym oraz estrami metylowymi kwasów tłuszczowych. Wykorzystując środowisko Scilab opracowano model symulacyjny, pozwalający na wykonanie ostatecznych testów: WLTP oraz NEDC. Zostały one przeprowadzone dla każdego z paliw z włączonym i włączonym układem start-stop. Efekty symulacji zostały przedstawione w formie wykresów wygenerowanych z programu Xcos.

EN

The emissivity simulations of solid and unburned particles on the example of 1.3 Multijet compression-ignition engine in the Fiat Panda passenger car were presented in the study. The results of the obtained mass contents were analysed in relation to tests, fuels and the activity of the start/stop system in the vehicle. The tests were carried out for two types of supply: diesel oil and fatty acid methyl esters. Using the Scilab programme, a simulation model was developed for the performance of the final tests: WLTP and NEDC. They were performed for each fuel with the enabled and disabled start-stop system. The results of the simulations were presented in the form of diagrams generated by the Xcos programme.

14

Światowe trendy w ograniczaniu emisji samochodowej i ich wpływ na rozwój napędów pojazdów, paliw, olejów silnikowych i metod badawczych – znaczenie globalne nowych regulacji ograniczania emisji WLTP i RDE – podsumowanie „6th International Exhaust Emissions Symposium (IEES)”

Bielaczyc P.

Przegląd Techniczny : Gazeta Inżynierska

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2018

|

nr 21-22

25--30

PL

Jednym z głównych, globalnych czynników, które wpływają na rozwój układów napędowych pojazdów samochodowych, są obecnie trendy w zmianach światowych norm i metodyk badawczych emisji spalin, spowodowane rzeczywistą emisją związków szkodliwych spalin z samochodów w czasie ich eksploatacji i metodami jej ograniczenia. Wprowadzenie nowych norm emisji w krajach Unii Europejskiej określanych jako Euro 6d, zawierających nowe metodyki badawcze WLTP i RDE, jest poważnym wyzwaniem dla przemysłu motoryzacyjnego, ze względu na trudności techniczne oraz czynniki polityczne i socjologiczne. Problem ograniczenia emisji gazów cieplarnianych, szczególnie dwutlenku węgla, emitowanych przez pojazdy drogowe, pozostaje również ważnym czynnikiem, ze względu na wpływ na globalne ocieplenie klimatu. Nowe normy emisji muszą być spełnione w szerokim zakresie warunków otoczenia i w rzeczywistej eksploatacji pojazdu na drodze. Ta problematyka i metody rozwoju układów napędowych pojazdów samochodowych były prezentowane i dyskutowane w czasie 6. Międzynarodowego Sympozjum Ograniczania Emisji z Pojazdów Samochodowych zorganizowanego przez Instytut BOSMAL w Bielsko-Białej. Podczas obrad dokonano syntezy obecnego i przyszłego statusu oraz rozwoju silników spalinowych, napędów hybrydowych i elektrycznych i tego, co najbliższe lata mogą przynieść w tej dziedzinie.

EN

Among the drivers influencing vehicular powertrain development, the field of vehicular exhaust emissions is experiencing wide-ranging and rapid changes. New emissions regulations such as Euro 6d and new test methods (RDE and WLTP) are the main challenges for the automotive industry caused by political, socioeconomic and technical factors. 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 becoming increasingly stringent, the list of parameters subject to legal limits are slowly expanding and, most importantly, these limits must be met under a wide range of conditions. A range of strategies are available to overcome these difficulties, which was explored during the 6th International Exhaust Emissions Symposium (IEES) hosted at BOSMAL in June 2018. This paper reports and summarises the topics of the 6th IEES and attempts a synthesis on the current status of the field of IC engines, hybrid powertrains and electric vehicles and what the coming years may hold for the automotive and fuel industries and other allied fields.

15

Trends in automotive emissions legislation: impact on LD engine development, fuels, lubricants, and test methods – a global view, with a focus on WLTP and RDE regulations – Summary of the 6th International Exhaust Emissions Symposium (IEES)

Bielaczyc P., Woodburn J.

Combustion Engines

|

2018

|

R. 57, nr 3

56--65

EN

Among the drivers influencing vehicular powertrain development, the field of vehicular exhaust emissions is experiencing wideranging and rapid changes. New emissions regulations such as Euro 6d and new test methods (RDE and WLTP) are the main challenges for the automotive industry caused by political, socioeconomic and technical factors. 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 becoming increasingly stringent, the list of parameters subject to legal limits are slowly expanding – and, most importantly, these limits must be met under a wide range of conditions. A range of strategies are available to overcome these difficulties, which was explored during the 6th International Exhaust Emissions Symposium (IEES) hosted at BOSMAL in June 2018. This paper reports and summarises the topics of the 6th IEES and attempts a synthesis on the current status of the field of IC engines, hybrid powertrains and electric vehicles and what the coming years may hold for the automotive and fuel industries and other allied fields.

16

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)

Bielaczyc P., Woodburn J., Gandyk M.

Combustion Engines

|

2016

|

R. 55, nr 3

76--82

EN

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.

17

Current directions in LD powertrain technology in response to stringent exhaust emissions and fuel efficiency requirements

Bielaczyc P., Woodburn J.

Combustion Engines

|

2016

|

R. 55, nr 3

62--75

EN

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.

18

Tendencje zmian przepisów homologacyjnych w aspekcie emisji gazów wylotowych dla pojazdów kategorii PC i LDV

Fuć P., Lijewski P., Ziółkowski A., Siedlecki M.

Combustion Engines

|

2015

|

R. 54, nr 3

417--424

PL

W artykule przedstawiono tendencje zmian przepisów homologacyjnych w aspekcie emisji gazów wylotowych dla pojazdów kategorii PC i LDV. Przepisy te, są jednym z wyznaczników rozwoju układów napędowych współczesnych pojazdów samochodowych. Każda ich zmiana wiąże się ze zmianami konstrukcyjnymi silników spalinowych i ich osprzętu, a także rozbudową pozasilnikowych układów oczyszczania gazów wylotowych. Wprowadzenie normy Euro 6 dla pojazdów kategorii PC i LDV będzie wiązać się ze zmianami limitów związków szkodliwych i toksycznych oraz wdrożeniem nowych metod pomiarowych. W 2017 r. planowane jest zastąpienie obowiązującego testu jezdnego NEDC testami WLTC, które będą obowiązywały w Unii Europejskiej, Stanach Zjednoczonych i Japonii. Ma to na celu standaryzację procedur badawczych w wymiarze globalnym. Nowością w przepisach homologacyjnych będzie opracowanie i wdrożenie procedur RDE dotyczących pomiarów emisji zanieczyszczeń w warunkach rzeczywistej eksploatacji przy wykorzystaniu mobilnych przyrządów z grupy PEMS. Oprócz wprowadzenia normy Euro 6 zmodyfikowano również limity emisji drogowej CO2 z floty pojazdów danego producenta pojazdów samochodowych.

EN

The article presents trends approval regulations in terms of exhaust gas emissions for vehicles of category PC and LDV. These provisions are one of the indicators of the development of modern drive systems of motor vehicles. Any variation is associated with structural changes in internal combustion engines and their accessories, as well as the expansion of afterteatment systems. The introduction of the Euro 6 for category PC (Passenger Car) and LDV (Light Duty Vehicles) will involve changes to the limits of exhaust emission as well as the implementation of new measurement methods. In 2017. It is planned to replace the existing driving test NEDC (New European Driving Cycle) on WLTC (Worldwide Harmonized Light duty driving Test Cycle), which will apply in the European Union, the United States and Japan. The aim is to standardize testing procedures on a global scale. New to the type-approval legislation will be to develop and implement procedures RDE (Real Driving Emission) regarding the measurement of emissions in real operating conditions with the use of mobile devices from a group of PEMS (Portable Emission Measurement System). In addition to the introduction of the Euro 6 emission limits also modified road emission of CO2 from vehicle fleet a given manufacturer of motor vehicles.