
Influence of the dilution factor on the uncertainty of the exhaust gas emission results obtained during testing on the chassis dynamometer
Author(s) -
Andrzej Szczotka,
Bartosz Puchałka,
Piotr Bielaczyc,
Borys Adamiak
Publication year - 2018
Publication title -
autobusy
Language(s) - English
Resource type - Journals
eISSN - 2450-7725
pISSN - 1509-5878
DOI - 10.24136/atest.2018.166
Subject(s) - automotive engineering , dilution , exhaust gas , chassis , dynamometer , internal combustion engine , exhaust gas recirculation , volume (thermodynamics) , environmental science , sample (material) , engineering , mechanical engineering , waste management , physics , thermodynamics
Exhaust emission measurements on the chassis dynamometer are one of the most important and most complex tests which are performed on vehicles powered by combustion engines. The sample and dilution system (CVS - Constant Volume Sampling) belongs to the most important parts of the exhaust emission laboratory, and has a large impact on the accuracy of the results obtained. In this paper, the influence of the dilution factor (i.e. parameter changed by means of the CVS system, depending on the emission level and engine displacement of the test vehicle) on the uncertainty of the exhaust gas emission results is analysed.