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Mining Publication: Differential Pressure as a Measure of Particulate Matter Emissions from Diesel Engines
Keywords: Diesel exhaust Diesel particulate matter Particulate matter measures Pressure measurement instruments
Original creation date: April 2005
Authors: SE Mischler, JC Volkwein
Peer Reviewed Journal Article - April 2005
Download PDF Document (0.33 MB)
NIOSHTIC2 Number: 20026787
Environ Sci Technol 2005 Apr 39(7):2255-2261
A 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 are working. To investigate the potential of a differential pressure monitor to measure diesel particulate matter in undiluted exhaust, samples were collected from three different diesel engines--Kubota, Isuzu, and Deutz--running under 12 different RPM and load scenarios. These measurements were compared to elemental carbon concentrations in the sampled exhaust as determined by using the NIOSH 5040 analytical method. Elemental carbon is used as a surrogate measurement for diesel particulate matter. The results of the two data sets were then compared using a linear regression analysis. The coefficient of determination was calculated to be 0.98, 0.94, and 0.74 for the Kubota, Deutz, and Isuzu engines, respectively. Values of this magnitude indicate that this method can be successful in estimating elemental carbon emissions in the engines tested. In addition, for replicate samples, the coefficient of variation ranged from 7.1% to 10.2% with an average of 8.5%. These data indicate that this method could prove useful to mechanics as they work to maintain engines and DPM control technologies.
Image of publication Differential Pressure as a Measure of Particulate Matter Emissions from Diesel EnginesPeer Reviewed Journal Article - April 2005
Download PDF Document (0.33 MB)
NIOSHTIC2 Number: 20026787
Environ Sci Technol 2005 Apr 39(7):2255-2261
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Instrumentation for Diesel Particulate Matter Emissions Research
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Size Distribution and Deposition in Human Respiratory Tract: Particle Mass and Number
Technology News 431 - Apparatus for Sampling and Measuring Diesel Tailpipe Emissions
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Underground Mine Diesel Particulate Monitor Network
Page last reviewed: September 21, 2012
Page last updated: September 21, 2012
Content source: National Institute for Occupational Safety and Health, Mining Program
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