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Problems of Partial Sample Systems for Modal Raw Exhaust Mass Emission Measurement
Technical Paper
2003-01-0779
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Changing of emission levels leads to an increasing demand for a satisfying solution to measure mass emissions of motor vehicles on both, engine and chassis dynamometers. Partial flow systems may fit to the demands. These systems require an exact determination of exhaust volume flow and time aligned concentration measurement. This paper will address these issues and problems related with partial flow sampling. Several exhaust flow measurement systems have been studied and integrated mass results have been checked against the full flow CVS. As the investigations indicate, modal mass calculation from sampling direct exhaust at the end of tailpipe is feasible but not a satisfying solution in equivalency and repeatability in comparison to CVS-results. This is especially the case on emission levels near or below ULEV.
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Authors
Citation
Thiel, W., Hornreich, C., Mörsch, O., and Seifert, G., "Problems of Partial Sample Systems for Modal Raw Exhaust Mass Emission Measurement," SAE Technical Paper 2003-01-0779, 2003, https://doi.org/10.4271/2003-01-0779.Also In
References
- McLeod J. et al. A Sampling System for Measurement of PreCatalyst Emissions from Vehicles SAE 930141
- Behrendt H. et al. Studies on enhanced CVS Technology to Achieve SULEV Certification SAE 2002-01-0049
- Thiel W. et al. Enhancements and Limits of Using Current Technology to Measure Low Exhaust Emissions Emission Control 2002 TU Dresden
- Beck M. et al. Direct High Dynamic Flow Measurement in The Exhaust of Combustion Engines SAE 980880
- Baronick J. et al. Modal Measurement of Raw Exhaust Volume and Mass Emissions by SESAM SAE 980047
- Wright J.D. Flowmeter Calibration facility for Heated Gas Mixtures NIST May 2001 www.uscar.org
- Report of special Test of an EG&G E-Flowmeter Oct 1997 www.uscar.org
- ERC Technical Report May 01 2001 “The Bag Mini Diluter Alternative to CVS Sampling”
- Theoretical Analysis- Speed response and Proportionality of DVE and 3 rd MFC to the Driving Trace ERC-Report May 2001 www.uscar.org
- European Regulation ECE R 15
- Seifert G. ULEV-SULEV-ZEV What is Zero Emission and How can it be measured MTZ 1 2002 Jahrgang 63 MTZ Worldwide 1 2002 63
- Hering Martin Stohrer Physik für Ingenieure VDI Verlag 1992
- NIST Report of Special Test of an EG&G E-Flowmeter October 24 1997
- Lohde S. Direkte Abgasdurchflußmessung mittels Ultraschalllaufzeitverfahren FH Luebeck Juli 2001
- Seiferth C. Entwicklung von Messmethoden für die online In-Zylinder-Messung FH Muenchen Juli 1999
- Thams D. BMW AG München Technical Calculation Department 2002