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Further Investigations on Time-Alignment
Technical Paper
2004-01-1441
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The measurement of vehicle modal emissions is technically challenging due to the major issue of determining exhaust gas mass flow rate and ensuring that it is synchronous with the emission measurement of that corresponding ‘slug’ of exhaust gas. This is very evident when attempting to measure small passive NOx catalyst conversion efficiencies. This paper highlights alignment issues with regard to the variation of time delays associated with engine and vehicle events and the CO2 tracer method for determining exhaust gas flows.
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Authors
- C. D. Bannister - Department of Mechanical Engineering, University of Bath
- J. G. Hawley - Department of Mechanical Engineering, University of Bath
- C. J. Brace - Department of Mechanical Engineering, University of Bath
- A. Cox - Department of Mechanical Engineering, University of Bath
- D. Ketcher - Advanced & Research Diesel, Ford Motor Company Limited
- R. Stark - Advanced & Research Diesel, Ford Motor Company Limited
Citation
Bannister, C., Hawley, J., Brace, C., Cox, A. et al., "Further Investigations on Time-Alignment," SAE Technical Paper 2004-01-1441, 2004, https://doi.org/10.4271/2004-01-1441.Also In
References
- Hawley, JG Brace CJ Cox A Ketcher D Stark R ‘Influence of time-alignment on the calculation of mass emissions on a chassis rolls dynamometer’ SAE 2003, Paper No. 2003-01-0395