Wyniki wyszukiwania - BazTech

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Selected vehicle emission assessment issues in passenger transport services

Pryciński Piotr, Wawryszczuk Róża, Korzeb Jarosław, Pielecha Piotr, Murawski Jakub

Combustion Engines

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2023

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R. 62, nr 4

14--22

EN

The paper presents an analytical method for determining the pollutant emission of transport modes, based on emission indicators for various vehicle types and statistical data. The method developed enables the determination of the emission of various vehicle types without the need to carry out tests on real vehicles. The purpose of this paper is to compare the vehicle emission results obtained using the developed analytical method with the real-world results obtained in RDE tests based on a case study, i.e. an analysis of the emission of passenger transport modes in Warsaw. The paper contains a summary of the results of measurements and calculations, as well as an analysis of potential areas of application for the developed analytical method.

2

Analysis of exhaust emission processes during the Real Driving Emissions test

Andrych-Zalewska Monika

Archives of Transport

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2023

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Vol. 66, iss. 2

123--148

EN

The article deals with the study of exhaust emissions from a combustion engine in the Real Driving Emission (RDE) test. These tests are a simulation of real conditions of use of motor vehicles. Nowadays, RDE tests are mandatory for Light Duty Vehicle (LDV) and Heavy Duty Vehicle (HDV) vehicles and in the future, restrictive standard. Euro 7, which combines stricter limits with a comprehensive RDE test cycle, is becoming a challenge for current vehicle engineering. The paper presents the results of pollutant emission tests from a passenger car (PC). In the tests of LDV in the RDE test, the results of which are analyzed in the article, the Portable Emissions Measurement System (PEMS) mobile exhaust emission testing system was used. The processes describing the operating states of the vehicle and the combustion engine, as well as the processes of exhaust emission intensity and the intensity of the number of particulate (PN), were examined. The correlation between the considered processes was investigated. The emission of carbon monoxide, hydrocarbons, nitrogen oxides, particulate and carbon dioxide as well as the road PN were examined. The zero-dimensional statistical characteristics of the examined processes were also determined. The probability density and power spectral density of the processes were established. A great diversity was found in the properties of the process distributions, as well as in the dynamic properties of the processes. In the summary of the analysis of the results of the car speed process, the operating states of the combustion engine and the processes of exhaust emission intensity and the process of the intensity of PN in the RDE test, conclusions were formulated regarding, among others, course of the intensity of these compounds, correlation of the processes of pollution emission intensity and the intensity of the PN with the process of car speed, distribution of processes.

3

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

Kurtyka Karolina, Pielecha Jacek

Combustion Engines

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2020

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R. 59, nr 2

24--30

EN

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).

4

Emisja masy i liczby cząstek stałych z pojazdu hybrydowego w teście RDE

Szymlet Natalia, Sokolnicka Barbara, Sieldecki Maciej, Lijewski Piotr, Nowak Mateusz

Autobusy : technika, eksploatacja, systemy transportowe

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2019

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R. 20, nr 6

286--290

PL

Przedmiotem niniejszego artykułu jest analiza drogowej emisji liczby oraz masy cząstek stałych w rzeczywistych warunkach eksploatacji z pojazdu hybrydowego. Co więcej, analizie poddano również warunki pracy badanego pojazdu oraz silnika. W tym celu wykonane zostały badania emisji cząstek stałych i parametrów eksploatacyjnych z lekkiego pojazdu samochodowego z napędem hybrydowym, wyposażonego w 104 kW silnik o objętości skokowej 1,58 dm3. Badania przeprowadzono w rzeczywistych warunkach ruchu, przestrzegając procedury RDE (Real Driving Emission). Test wykonano na obszarze aglomeracji poznańskiej, trasa obejmowała drogi o różnych dopuszczalnych prędkościach. Do badań wykorzystano mobilną aparaturę, należącą do grupy PEMS (Portable Emissions Measurement System), w skład której wchodziły takie urządzenia jak: SEMTECH DS., AVL MSS (Micro Soot Sensor) oraz EEPS 3090 (Engine Exhaust Particle Sizer). Uzyskane wyniki zostały odniesione do wartości dopuszczalnych emisji zgodnie ze standardem EURO 6.

EN

The subject of this article is the analysis of the particle number and mass road emission from a hybrid vehicle in real operating conditions. Additionally, the operating conditions of the tested vehicle and engine were also analyzed. To this end, particulate emissions and performance tests were carried out from a light hybrid vehicle, equipped with a 77 kW engine with a displacement of 1.58 dm3. The tests were conducted in real traffic conditions, following the standard RDE (Real Driving Emission) procedure. The test was performed within the Poznań agglomeration, the route included roads with different maximum speed limits. The research involved the use of mobile measuring equipment, belonging to the PEMS (Portable Emissions Measurement System) group, which included equipment such as: SEMTECH DS, AVL MSS (Micro Soot Sensor) and EEPS 3090 (Engine Exhaust Particle Sizer). The results obtained have been referred to the vehicle exhaust emission limit values in accordance with the Euro 6 norm.