Comparison of exhaust emission on the basis of Real Driving Emissions measurements and simulations

Nowak, Mateusz

doi:10.1051/matecconf/201711800026

Cited by 18 publications

(6 citation statements)

References 8 publications

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“…Although the RDE test is performed under real traffic conditions, it is highly formalized. The requirements concern not only the vehicle conditioning for the test but also the provision of research conditions [1,12,14,[20][21][22][23].…”

Section: Rde Test Conditionsmentioning

confidence: 99%

Cold start emissions from a gasoline engine in RDE tests at different ambient temperatures

Kurtyka¹,

Pielecha²

2020

Combustion Engines

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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).

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Section: Rde Test Conditionsmentioning

confidence: 99%

Cold start emissions from a gasoline engine in RDE tests at different ambient temperatures

Kurtyka¹,

Pielecha²

2020

Combustion Engines

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“…Such activities are also observed in relation to mass transport means -city buses, and especially to the drive systems used in them. As a result of such activities, more ecological constructions for city bus drives are being developed, as well as their continuous improvement in terms of reduced emissions and fuel economy [17,22,27].…”

Section: Exhaust Emission Tests For City Busesmentioning

confidence: 99%

Observations from PEMS testing of combustion engines of different applications

Merkisz¹,

Pielecha²

2018

Combustion Engines

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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.

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“…Research is increasingly carried out on the analysis of global exhaust emissions. Estimation of pollutant emissions from various transport branches is based on various mathematical models based on transport volume and emission data from homologation tests (Markowski et al, 2017;Nowak et al, 2018;Nowak & Pielecha, 2017). In the case of aviation, it is popular to use the LTO test as a tool for estimating and predicting the exhaust emission at a given air traffic and location (Nowak et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Methodical Aspects of the Lto Cycle Use for Environmental Impact Assessment of Air Operations Based on the Warsaw Chopin Airport

et al. 2021

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The aviation engines homologation process takes place in LTO (Landing and Take-Off) test cycle. Mentioned procedure is good for the approval applications because the test conditions are repeatable and obtained results could be compared between different engines. The authors compared in this article the exhaust emission results obtained in LTO test cycle during selected engine homologation with values obtained in estimations. Two Allied Signal TFE731-2-2B engines with a thrust of 15.6 kN were taken into considerations. The engines are used to propel the popular VLJ (Very Light Jet) aircraft: Dassault Falcon 100. Adopted methodology of emission estimation is very similar to the LTO, because the authors use the emission factors obtained in LTO cycle, specified for selected engines. Also, the duration of take-off, climb-out and approach LTO phases were adopted to the estimations. In the analyzed case, 16 scenarios of taxi phase were selected on the basis of the Warsaw Chopin Airport available runways. Duration of taxi phase in these cases vary between 3.1 to 11.0 minutes which is at least 58% less than in LTO test. Assuming the real taxi times change the exhaust emission results comparing to normal LTO cycle up to about 64%. The proposed methodology could be used for assessing environmental impact of air operations, which can be used to create the reports with more accurate data than with typical LTO times.

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Comparison of exhaust emission on the basis of Real Driving Emissions measurements and simulations

Cited by 18 publications

References 8 publications

Cold start emissions from a gasoline engine in RDE tests at different ambient temperatures

Cold start emissions from a gasoline engine in RDE tests at different ambient temperatures

Observations from PEMS testing of combustion engines of different applications

Methodical Aspects of the Lto Cycle Use for Environmental Impact Assessment of Air Operations Based on the Warsaw Chopin Airport

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