Abstract
The subject of this article is the identification of engine exhaust emissions of two-wheel vehicles under laboratory conditions. For this purpose, analysis of road and time emission of gaseous compounds: HC, CO, CO2, NOx from a motorcycle equipped with an engine with a displacement volume of 0.7 dm3 and a maximum power of 55 kW was made. The tests were performed on a dynamometer station designed for testing two-wheel vehicles. The speed characteristic was taken from the European type approval test WMTC, consisting of three parts. Each of these parts lasted 600 seconds and was characterized by a different maximum vehicle speed value. The mobile AXION R/S apparatus part of the PEMS device group was used in the research. What is more, the exhaust emissions results were referred to the values listed by the exhaust emission standard met by the tested vehicle (Euro 4 standard). Laboratory tests presented in the article are only intended as a basis for further research, which includes exhaust emission tests from two-wheel vehicles in real operating conditions.
Highlights
One of the most important sources of greenhouse gas emission is combustion engines used in transport, heavy machinery, and other equipment
For carbon monoxide (CO), an emission value was 73% lower than the limit value, for HC and NOx it was lower by almost 40%, which was associated with high efficiency of the engine exhaust aftertreatment system, which comprised of a three-way catalytic reactor
The tests performed on a two-wheel vehicle chassis dynamometer and analysis of their results allowed to formulate conclusions regarding the work indicators and ecological characteristics of the test vehicle
Summary
One of the most important sources of greenhouse gas emission is combustion engines used in transport, heavy machinery, and other equipment. The increase in the wealth of the population of all world agglomerations, leads to an increasing share of road transport, in which, apart from cars and trucks, including the two-wheelers vehicle group. The advantages resulting from the use of two-wheelers (avoiding road congestion, no problem finding a parking space and the ease of obtaining a license) cause a continuous increase in the share of this vehicle category, in particular in Asian countries This fact lead to many research and development centers performing intensive research work on the assessment of exhaust emission from this type of vehicles. Laboratory tests using the current WMTC test presented in this article are only the basis for further work of au-thors, which are exhaust emission tests from two-wheelers in real operating conditions They were necessary to get to know the parameters of the combustion engine operation. It is to be expected that in the coming years the methodology of testing powered twowheeler-applications will remain unchanged
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