Design and evaluation of the emissions measurement components for a heavy-duty diesel-powered vehicle mobile emissions measurement system (MEMS)
Date of Graduation
Statler College of Engineering and Mineral Resources
Mechanical and Aerospace Engineering
The objective of this study was the design, construction, and preliminary qualification of the Mobile Emissions Measurement System (MEMS) for in-use, on-road testing of heavy-duty diesel-powered vehicles. This included selection of emissions analyzers and sampling system components capable of producing emissions results of similar accuracy to those attained with laboratory-grade instruments. A thorough investigation of commercially available systems, and a literature review, identified no suitable designs. Therefore, a complete emissions measurement system, designed specifically for the testing of heavy-duty diesel powered vehicles, was developed using available components.;The candidate analyzers that performed successfully during bottled gas bench tests were then incorporated into a sampling system and tested with diesel engine exhaust. Emissions concentrations reported by the MEMS were compared to concentrations reported by laboratory-grade analyzers. Results indicated that the system is capable of reporting cycle-integrated, brake-specific CO2 within 3%, and NOx within 5% of laboratory data over an FTP cycle.
Riddle, Wesley Clark, "Design and evaluation of the emissions measurement components for a heavy-duty diesel-powered vehicle mobile emissions measurement system (MEMS)" (2001). Graduate Theses, Dissertations, and Problem Reports. 1130.