Mining Publication: Differential Pressure as a Measure of Particulate Matter Emissions from Diesel Engines
Original creation date: April 2005
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.
Authors: SE Mischler, JC Volkwein
Peer Reviewed Journal Article - April 2005
NIOSHTIC2 Number: 20026787
Environ Sci Technol 2005 Apr 39(7):2255-2261
See Also
- AQE - Air Quantity Estimator - 1.0.3
- A Computer Software Program that Estimates Air Quantity Requirements in Large Opening Stone Mines
- Diesel Exhaust Aerosol, Review of Measurement Technology
- Evaluation of a Wearable Monitor for Measuring Real-time Diesel Particulate Matter Concentrations in Several Underground Mines
- Instrumentation for Diesel Particulate Matter Emissions Research
- Real-time Diesel Particulate Monitor for Underground Mines
- Size Distribution and Deposition in Human Respiratory Tract: Particle Mass and Number
- Technology News 431 - Apparatus for Sampling and Measuring Diesel Tailpipe Emissions
- Technology News 514 - The Air Quantity Estimator (AQE): A New Computer Software Tool for Large-opening Mine Ventilation Planning
- Underground Mine Diesel Particulate Monitor Network
- Content source: National Institute for Occupational Safety and Health, Mining Program