Cart
Article
Time Resolved Characterization of Diesel Particulate Emissions. 1. Instruments for Particle Mass Measurements
Full Text HTML
Hi-Res PDFPurchase the full-text
- PDF/HTML,
figures/images,
references and tables,
(where available)
Section:Abstract
The measurement of diesel vehicle exhaust particulate mass is currently accomplished using filter collection methods according to the Code of Federal Regulations (CFR). Such filter methods limit time resolution to a minimum of several minutes, making it impossible to study emissions during transient operating conditions. Extensive testing of five different measurement methods has demonstrated that fast response measurements of diesel exhaust particulate mass concentrations, consistent with CFR filter measurements, are feasible using existing technology. The measurement principles of choice are the real time weighing of exhaust samples as implemented in the tapered element oscillating microbalance (TEOM) and the measurement of light scattering from exhaust particles as implemented in the DustTrak nephelometer. Each of these two instruments has distinctive strengths. The TEOM excels in the area of constant calibration, independent of vehicle. For the DustTrak, this calibration varies by vehicle. On the other hand, the DustTrak has an excellent signal-to-noise ratio, freedom from interference due to other exhaust sample properties, good time resolution, and simplicity. The strengths of the two measurement methods are complimentary, so an obvious suggestion is to integrate them. The nephelometer would obtain a fast response signal, with near real time calibration provided by the microbalance.
Citing Articles
Citation data is made available by participants in CrossRef's Cited-by Linking service. For a more comprehensive list of citations to this article, users are encouraged to perform a search in SciFinder.
This article has been cited by 8 ACS Journal articles (5 most recent appear below).
On-Road Heavy-Duty Diesel Particulate Matter Emissions Modeled Using Chassis Dynamometer Data
Tom Kear and D. A. NiemeierEnvironmental Science & Technology2006 40 (24), 7828-7833On-Road Heavy-Duty Diesel Particulate Matter Emissions Modeled Using Chassis Dynamometer Data
Tom Kear and D. A. NiemeierEnvironmental Science & Technology2006 40 (24), 7828-7833This study presents a model, derived from chassis dynamometer test data, for factors (operational correction factors, or OCFs) that correct (g/mi) heavy-duty diesel particle emission rates measured on standard test cycles for real-world conditions. Using ...
Single Particle Characterization of Ultrafine and Accumulation Mode Particles from Heavy Duty Diesel Vehicles Using Aerosol Time-of-Flight Mass Spectrometry
Stephen M. Toner, David A. Sodeman, and Kimberly A. PratherEnvironmental Science & Technology2006 40 (12), 3912-3921Single Particle Characterization of Ultrafine and Accumulation Mode Particles from Heavy Duty Diesel Vehicles Using Aerosol Time-of-Flight Mass Spectrometry
Stephen M. Toner, David A. Sodeman, and Kimberly A. PratherEnvironmental Science & Technology2006 40 (12), 3912-3921The aerodynamic size and chemical composition of individual ultrafine and accumulation mode particle emissions (Da = 50−300 nm) were characterized to determine mass spectral signatures for heavy duty diesel vehicle (HDDV) emissions that can be used for ...
Differential Pressure as a Measure of Particulate Matter Emissions from Diesel Engines
Steven E. Mischler and Jon C. VolkweinEnvironmental Science & Technology2005 39 (7), 2255-2261Differential Pressure as a Measure of Particulate Matter Emissions from Diesel Engines
Steven E. Mischler and Jon C. VolkweinEnvironmental Science & Technology2005 39 (7), 2255-2261A diesel particulate matter analyzer capable of direct, real-time measurement of engine exhaust particulate is necessary to effectively institute source control technology currently being used on diesel equipment and to ensure that the control measures ...
Comparison of Mass-Based and Non-Mass-Based Particle Measurement Systems for Ultra-Low Emissions from Automotive Sources
Martin Mohr, Urs Lehmann, and Josef RütterEnvironmental Science & Technology2005 39 (7), 2229-2238Comparison of Mass-Based and Non-Mass-Based Particle Measurement Systems for Ultra-Low Emissions from Automotive Sources
Martin Mohr, Urs Lehmann, and Josef RütterEnvironmental Science & Technology2005 39 (7), 2229-2238Drastic reduction in particle emissions of diesel-powered vehicles and new findings on the health impact of particles raise the question of a more sensitive measurement procedure. In this paper, 16 different particle mass measurement systems are compared ...
Diesel Bus Emissions Measured in a Tunnel Study
Milan Jamriska, Lidia Morawska, Steven Thomas, and Congrong HeEnvironmental Science & Technology2004 38 (24), 6701-6709Diesel Bus Emissions Measured in a Tunnel Study
Milan Jamriska, Lidia Morawska, Steven Thomas, and Congrong HeEnvironmental Science & Technology2004 38 (24), 6701-6709The emission factors of a bus fleet consisting of approximately 300 diesel-powered buses were measured in a tunnel study under well-controlled conditions during a 2-d monitoring campaign in Brisbane. Particle number and mass concentration levels of ...
Tools
-
Add to Favorites
-
Download Citation
-
Email a Colleague -
Permalink
Order Reprints
Rights & Permissions
Citation Alerts
History
- Published In Issue February 15, 2001
- Received for review June 19, 2000
Revised manuscript received November 30, 2000
Accepted December 4, 2000
ACS
Network
Facebook
Tweet This
CiteULike
Newsvine
Digg This
Delicious
