Comparison of an On-Board, Real-Time Electronic PM Sensor with Laboratory Instruments Using a 2009 Heavy-Duty Diesel Vehicle
- Technical Paper
- ISSN 0148-7191
- DOI: https://doi.org/10.4271/2011-01-0627
EmiSense Technologies, LLC (
Computational fluid dynamics (CFD) modeling was performed to characterize the hydrodynamics of the sensor's housing and to develop an improved PM sensor housing with reproducible hydrodynamics and an internal baffle to minimize orientation effects. PM sensors with the improved housing were evaluated in the truck exhaust of a heavy duty (HD) diesel engine tested on-road and on a chassis dynamometer at the University of California, Riverside (UCR) using their Mobile Emissions Laboratory (MEL). This consisted of a HD diesel tractor/trailer unit with PEMS for characterizing exhaust. Time-resolved PM mass and/or number concentrations were measured with an AVL MSS-483, Dekati DMM-230, TSI Dustrak, and UCR's fast scanning mobility particle sizer (fSMPS) and compared to the outputs of 12 EmiSense PMTrac sensors.
In situ PM measurements from EmiSense's PM sensors correlated well with gravimetric measurements, and results from the real-time laboratory PM monitoring instruments in UCR's mobile emissions laboratory. In addition, particle size distribution data from UCR's fSMPS are presented and discussed. One characteristic of the PM sensor that is desirable for post-DPF OBD measurements is that it directly measures PM in the exhaust with no additional requirements for sampling and/or dilution systems.
- Jim Steppan - EmiSense Technologies, LLC
- Brett Henderson - EmiSense Technologies, LLC
- Kent Johnson - Univ of California-Riverside
- M. Yusuf Khan - Univ of California-Riverside
- Timothy Diller - Univ of Texas-Austin
- Matthew Hall - Univ of Texas-Austin
- Anthoniraj Lourdhusamy - EmiSense Technologies, LLC
- Klaus Allmendinger - EmiSense Technologies, LLC
- Ronald D. Matthews - Univ of Texas-Austin
CitationSteppan, J., Henderson, B., Johnson, K., Yusuf Khan, M. et al., "Comparison of an On-Board, Real-Time Electronic PM Sensor with Laboratory Instruments Using a 2009 Heavy-Duty Diesel Vehicle," SAE Technical Paper 2011-01-0627, 2011, https://doi.org/10.4271/2011-01-0627.
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