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Evaluation of a FTIR Emission Measurement System for Legislated Emissions Using a SI Car

Li, H., Ropkins, K., Andrews, G.E., Daham, B., Bell, M.C. and Tate, J.E. (2006) Evaluation of a FTIR Emission Measurement System for Legislated Emissions Using a SI Car. In: Proceedings of SAE 2006 Powertrain and Fluid Systems Conference. SAE Paper (2006-0). Society of Automotive Engineers , USA . ISBN 0-7680-1803-X

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A series of chassis dynamometer test trials were conducted to assess the performance of a Fourier Transform Infra Red (FTIR) system developed for on-road vehicle exhaust emissions measurements. Trials used a EURO 1 emission compliant SI passenger car which, alongside the FTIR, was instrumented to allow the routine logging of engine speed, road speed, throttle position, air-fuel ratio, air flow and fuel flow in addition to engine, exhaust and catalyst temperatures. The chassis dynamometer facility incorporated an ‘industry standard’ measurement system comprising MEXA7400 gas analyzer and CVS bag sampling which was the ‘benchmark’ for the evaluation of FTIR legislated gas-phase emissions (CO, NOx, THC and CO2) measurements.

Initial steady state measurements demonstrated strong correlations for CO, NOx and THC (R2 of 0.99, 0.97 0.99, respectively) and a good correlation for CO2 (R2 = 0.92). Subsequent transient and total mass emissions measurements from replicate samplings of four different driving cycles (two standard cycles, FTP75 and NEDC, and two novel cycles based on real-world data collected in Leeds) also show good response of FTIR and satisfied agreement between the FTIR and CVS bag sampling measurements.

In general, the trial results demonstrate that the on-board FTIR emission measurement system provides reliable in-journey emissions data.

Item Type: Book Section
Copyright, Publisher and Additional Information: © 2006 SAE International. This paper is published on this website with permission from SAE International. As a user of this website, you are permitted to view these papers on-line, download these pdf files and print one copy of these papers at no cost for your use only. The downloaded pdf files and printout of these SAE papers may not be copied, distributed or forwarded to others or for the use of others.
Keywords: FTIR, emission measurement, real world
Institution: The University of Leeds
Academic Units: The University of Leeds > Faculty of Engineering (Leeds) > School of Chemical & Process Engineering (Leeds) > Energy Research Institute (Leeds)
Depositing User: Hu Li
Date Deposited: 26 Mar 2007
Last Modified: 06 Jun 2014 01:18
Status: Published
Publisher: Society of Automotive Engineers
Refereed: Yes
URI: http://eprints.whiterose.ac.uk/id/eprint/2049

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