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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

2022

R. 61, nr 4

58--65

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.

Charakterystyki emisji zanieczyszczeń z samochodowych silników spalinowych

Chłopek Z., Zimakowska M.

Prace Naukowe Politechniki Warszawskiej. Inżynieria Środowiska

2009

z. 55

53-65

W pracy zostały przedstawione charakterystyki emisji zanieczyszczeń dla poszczególnych kategorii pojazdów - zależności emisji drogowej zanieczyszczeń od średniej prędkości ruchu, charakteryzującej model ruchu pojazdu, wyznaczone na podstawie wyników badań, zawartych w bazie danych oprogramowania INFRAS AG. Przedstawione zostały wyniki analizy wybranych charakterystyk emisji zanieczyszczeń z pojazdów samochodowych.

Characteristics of pollutant emission from each category of vehicle have been presented in the paper. These are the dependencies of specific distance emission on the average speed, characterizing the model of vehicle traffic. Characteristics of pollutants have been obtained on the basis of results from the software of INFRAS AG. The analysis results of chosen characteristics of pollutant emission from vehicles are presented in the paper.