Wyniki wyszukiwania - BazTech

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Determination of characteristics of pollutant emission from a vehicle engine under traffic conditions in the engine test

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

Combustion Engines

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2022

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R. 61, nr 4

58--65

EN

The paper describes the method of determination of exhaust emission characteristics from a vehicle engine based on the results obtained in a driving test simulated on an engine dynamometer. These characteristics are the relations between the specific distance emissions and the zero-dimensional characteristics of the process of vehicle velocity: the average velocity value and the average value of the absolute value of the product of vehicle velocity and acceleration. The exhaust emission characteristics are used to simulate the emissions from vehicles operating in different types of traffic conditions. The engine operating states in the engine dynamometer tests were determined by the operating conditions of the vehicle during the test. The authors applied the Monte Carlo method in order to determine the characteristics of different values of the zero-dimensional characteristics of the vehicle velocity process. This enabled the determination of the characteristics based on the test results from a single realization of the process of vehicle velocity. Additionally, the developed method allowed a replacement of the empirical research on the chassis dynamometer with the one performed on the engine dynamometer. The obtained exhaust emission characteristics are in line with the characteristics obtained on the chassis dynamometer in multiple tests.

2

Characteristics of pollutant emission from motor vehicles for the purposes of the Central Emission Database in Poland

Bebkiewicz Katarzyna, Chłopek Zdzisław, Lasocki Jakub, Szczepański Krystian, Zimakowska-Laskowska Magdalena

Combustion Engines

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2019

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R. 58, nr 2

165--171

EN

Within the Institute of Environmental Protection - National Research Institute the Central Emission Database is being established. The Database will cover the most important emission sectors from anthropogenic activities, including usage of motor vehicles. The intensity of emissions of individual pollutants is the input data to air pollution dispersion models. Based on calculations performed by the air pollution dispersion models concentration of pollutants dispersed in atmospheric air (pollution immission) is provided. The annual average immision for a selected place in Poland is a measure of the threat to environment. In order to determine the intensity of pollutant emissions from motor vehicles it is necessary to recognize the intensity of vehicle motion and the volume of emission of pollutants depending on the type of vehicle motion. The task presented in this article is to determine the characteristics of pollutant emissions from motor vehicles depending on the type of their motion. The mean value of vehicle speeds was used to characterize the type of vehicle motion. The emission of pollutants from vehicles is therefore characterized by the dependence of road emissions of pollutants on the average speed of vehicles. The characteristics were determined for cumulated categories of motor vehicles: passenger cars, light commercial vehicles as well as heavy duty trucks and buses. The results of the inventory of pollutant emissions from motor vehicles in Poland in 2016 were used to determine the characteristics of pollutant emissions.

3

Charakterystyki emisji zanieczyszczeń z silników spalinowych do celów oceny oddziaływania motoryzacji na środowisko

Chłopek Z.

Inżynieria Maszyn

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2003

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R. 8, z. 4

19-31

PL

Jedną z wielkości charakteryzujących oddziaływanie motoryzacji na środowisko jest imisja zanieczyszczeń. Imisje zanieczyszczeń z po szczególnych źródeł emisji można badać dzięki znajomości natężenia emisji. W celu wyznaczenia natężenia emisji zanieczyszczeń konieczna jest znajomość charakterystyk emisji z silników spalinowych. W pracy przedstawiono podstawowe problemy związane z wyznaczaniem charakterystyk emisji zanieczyszczeń z pojazdów. Rozważania zostały zilustrowane przykładem wyznaczania charakterystyk emisji z silników pojazdów, reprezentatywnych dla Polski w latach 2003 - 2010.

EN

Pollution imission is a category, which is characterizing a motorization influence on environment. The pollution imission from particular sources is investigated on the ground of pollution mass emission intensity. The pollution mass emission intensity is calculated on the ground of emission characteristics for internal combustion engines. In the paper are presented the fundamental problems of the pollution emission characteristics estimation for vehicles. The considerations are represented with the examples of the pollution emission characteristics estimation for internal combustion engines in Poland for 2003 - 2010 years.