Development of a Comprehensive Modal Emissions Model
In August 1995, the College of Engineering-Center for Environmental Research and Technology (CE-CERT) at the University of California-Riverside along with researchers from the University of Michigan and Lawrence Berkeley National Laboratory, began a four-year research project to develop a Comprehensive Modal Emissions Model (CMEM), sponsored by the National Cooperative Highway Research Program (NCHRP, Project 25-11). The overall objective of the research project was to develop and verify a modal emissions model that accurately reflects Light-Duty Vehicle (LDV, i.e., cars and small trucks) emissions produced as a function of the vehicle's operating mode. The model is comprehensive in the sense that it is able to predict emissions for a wide variety of LDVs in various states of condition (e.g., properly functioning, deteriorated, malfunctioning). The model is now complete and capable of predicting second-by-second tailpipe emissions and fuel consumption for a wide range of vehicle/technology categories. In creating CMEM, over 350 vehicles were extensively tested on a chassis dynamometer, where second-by-second measurements were made of both engine-out and tailpipe emissions of carbon monoxide, hydrocarbons, oxides of nitrogen, and carbon dioxide. CMEM itself runs on a personal computer or on a UNIX workstation. The model and the emissions database are both available on a CD.
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Supplemental Notes:
- Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
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Authors:
- Barth, Matthew J
- An, Feng
- Younglove, Theodore
- Scora, George
- Levine, Carrie
- Ross, Marc
- Wenzel, Thomas
- Publication Date: 2000-4
Language
- English
Media Info
- Media Type: Web
- Edition: Contractor Final Report
- Features: Appendices; Figures; References; Tables;
- Pagination: 435p
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Serial:
- NCHRP Web-Only Document
- Issue Number: 122
- Publisher: Transportation Research Board
Subject/Index Terms
- TRT Terms: Automobiles; Carbon dioxide; Carbon monoxide; Exhaust gases; Fuel consumption; Hydrocarbons; Light trucks; Mathematical prediction; Nitrogen oxides
- Identifier Terms: Comprehensive Modal Emissions Model
- Uncontrolled Terms: Light duty vehicles; Vehicle operating modes
- Subject Areas: Data and Information Technology; Energy; Environment; Highways; Vehicles and Equipment; I15: Environment; I90: Vehicles;
Filing Info
- Accession Number: 01098920
- Record Type: Publication
- Report/Paper Numbers: NCHRP Project 25-11
- Files: TRIS, TRB, ATRI
- Created Date: May 7 2008 4:21PM