Estimating vehicle emissions from road transport, case study: Dublin City

Abstract

Air pollution is becoming a very important issue for the transportation sector, particularly car emissions in urban areas, and there is much interest in evaluating the actual level of emissions. In this paper, a case study of a standard driving cycle in the urban area of Dublin city is presented. On-road, speed-time data was extracted by an on-board diagnostic tool, and saved into a data acquisition package. Firstly, the driving cycle was established for the urban area of the city; one car travelling different routes has been employed to implement this research and some representative results have been achieved. The second part of the project was to estimate the emissions from the same car using the driving cycle obtained and compare the results with those obtained by a gas analyzer attached to the car simultaneously in order to validate the methodology used in this paper.A representative driving cycle reflecting the real-world driving conditions is proposed and estimated vehicle emissions were compared with measured results. The method is easy to follow and the results are in a good fit to the estimated values.

Emissions from Light-Duty Diesel and Gasoline in-use Vehicles Measured on Chassis Dynamometer Test Cycles

“…In most cases, the EFs obtained in the present work for gasoline vehicles are also lower than those reported in other dynamometer studies (e.g. Bergvall et al, 2009;Fontaras et al, 2011), on-board measurements (Ropkins et al, 2007;Achour et al, 2011;Huo et al, 2012) and tunnel experiments (Pierson et al, 1996;Kristensson et al, 2004;McGaughey et al, 2004;Martins et al, 2006). In the case of diesel vehicles, the EFs are lower than those obtained from on-board and tunnel measurements, but higher when compared with the results of other dynamometer tests.…”

Indoor CO2 measurements in Serbian schools and ventilation rate calculation

“…In many developing countries energy consumption from the transport sector has not been investigated in details and consequently the harmful emissions intensities and GHGs produced from the exhaust pipes of these vehicles [19]. Therefore, recent research in this area shows necessity of Driving Cycle establishment in urban areas (characteristics varies from one city to another) in order to understand and reduce vehicle emissions [20,21]. Also, good passenger road transport scenarios, with better mobility and quality of life in the region, based on modal shift from private car trips to a Bus Rapid Transport system can help in achieving lower emissions.…”

Representative model and flow characteristics of open pore cellular foam and potential use in proton exchange membrane fuel cells

“…The Proton Exchange Membrane (PEM) fuel cell is a low temperature electrochemical device that offers a promising, possibly green, alternative to traditional power sources, and other fuel cell types, in many applications, without air polluting issues [1][2][3]. PEM fuel cells use a solid polymer in the form of a solid phase proton conducting membrane as an electrolyte.…”