Journal ArticleDOI
On-road comparison of a portable emission measurement system with a mobile reference laboratory for a heavy-duty diesel vehicle
Kent C. Johnson,Thomas D. Durbin,David R Cocker,Wayne Miller,Dipak Bishnu,Hector Maldonado,Nate Moynahan,C. Ensfield,Christopher A. Laroo +8 more
TLDR
In this paper, on-road comparisons between a mobile emissions laboratory (MEL) meeting federal standards and a portable emissions measurement system (PEMS) were made over different conditions; including road grade, vibration, altitude, electric fields, and humidity with the PEMS mounted inside and outside of the tractor's cab.About:
This article is published in Atmospheric Environment.The article was published on 2009-06-01. It has received 60 citations till now. The article focuses on the topics: Portable emissions measurement system.read more
Citations
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Journal ArticleDOI
Road vehicle emission factors development: A review
Vicente Franco,Marina Kousoulidou,Marilena Muntean,Leonidas Ntziachristos,Stefan Hausberger,Panagiota Dilara +5 more
TL;DR: In this paper, a review of the techniques used to measure road vehicle emissions are examined in relation to the development of emission factors found in emission models used to produce emission inventories.
Journal ArticleDOI
Use of portable emissions measurement system (PEMS) for the development and validation of passenger car emission factors
Marina Kousoulidou,Georgios Fontaras,Leonidas Ntziachristos,Pierre Bonnel,Zissis Samaras,Panagiota Dilara +5 more
TL;DR: In this paper, the development and validation of passenger car emission factors, using real world operation data, were discussed, in order to provide a range of driving conditions, including urban, rural and highway driving.
Journal ArticleDOI
On-road emission factor distributions of individual diesel vehicles in and around Beijing, China
TL;DR: In this article, a field study was conducted to characterize the on-road emissions of individual diesel vehicles in and around Beijing, China during November and December of 2009, where they successfully sampled 230 individual trucks on 4 major expressways around the city and 57 individual buses in the city using refined mobile chasing techniques and fast response instruments.
Journal ArticleDOI
Characteristics of on-road NOx emissions from Euro 6 light-duty diesel vehicles using a portable emissions measurement system.
TL;DR: The result shows that performance improvements of exhaust gas recirculation and the NOx after-treatment system will be needed at lower ambient temperatures.
Journal ArticleDOI
Real-world operation conditions and on-road emissions of Beijing diesel buses measured by using portable emission measurement system and electric low-pressure impactor.
Zhihua Liu,Yunshan Ge,Kent C. Johnson,Asad Naeem Shah,Asad Naeem Shah,Jianwei Tan,Chu Wang,Linxiao Yu +7 more
TL;DR: The results indicate that considerable discrepancies of engine operating conditions between real-world driving cycles and engine certification cycles have been observed, and it is suggested that specific certified cycle should be developed to regulate bus engines emissions on the test bench or use PEMS to control the bus emissions under real- world operating conditions.
References
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Journal ArticleDOI
Development and application of a mobile laboratory for measuring emissions from diesel engines. 1. Regulated gaseous emissions.
TL;DR: The first data on total capture gaseous on-road emission measurements following the California Air Resources Board 4-mode driving cycle, the hot urban dynamometer driving schedule (UDDS), the modified 5-mode cycle, and a 53.2-mi highway chase experiment is provided.
Journal ArticleDOI
Evaluation and Comparison of Portable Emissions Measurement Systems and Federal Reference Methods for Emissions from a Back-Up Generator and a Diesel Truck Operated on a Chassis Dynamometer
Thomas D. Durbin,Kent C. Johnson,David R. Cocker,J. Wayne Miller,Hector Maldonado,Atul Shah,Carl D. Ensfield,Christopher S. Weaver,Mike Akard,Neal Harvey,James Symon,Thomas Lanni,William D. Bachalo,Greg Payne,Greg Smallwood,Manfred Linke +15 more
TL;DR: In this study, four commercial PEMS were compared with a Federal Reference Method for measuring emissions from a back-up generator over steady-state loads and a diesel truck on transient and steady- state chassis dynamometer tests.
Journal ArticleDOI
Development and application of a mobile laboratory for measuring emissions from diesel engines. 2. Sampling for toxics and particulate matter.
TL;DR: Comparison of the PM/NOx ratios obtained for the above tests provides insight into the presence and importance of "off-cycle" emissions during on-road driving.
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