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Investigation into the Performance of an Ultra-fast Response NO Analyser Equipped with a NO2 to NO Converter for Gasoline and Diesel Exhaust NOx Measurements
Technical Paper
2000-01-2954
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The development and optimisation of an ultra-fast response chemiluminescence NOx analyser, equipped with a high temperature stainless steel, nitrogen dioxide (NO2) to nitric oxide (NO) converter, for the transient measurement of the NOx (NO + NO2) content of automotive emissions is described. Conventional analysers routinely used to measure NOx in automotive exhaust utilise chemiluminescence detection (CLD). Ultra-fast time-scale analysis using CLD, however, has traditionally been hindered by the slow conversion of NO2 to NO. The converter and technology used in the instrument described herein enables a 10-90% response time of less than 10 ms.
Following optimisation in the laboratory, the fast response CLD NOx analyser was evaluated for raw exhaust sampling of port fuel injected (PFI) gasoline and diesel vehicles. Conventional CLD and on-line speciation systems, such as chemical ionisation mass spectrometry (CIMS), were used to assess the effectiveness of the fast response CLD NOx analyser under different exhaust composition regimes.
The performance of the ultra-fast response CLD NOx analyser under most operating conditions was found to be excellent. An exception is the lean-burn PFI gasoline engine equipped with a close-coupled three-way catalyst (TWC) and underfloor lean NOx trap (LNT) where, under periodic rich purge regenerations, the ultra-fast CLD NOx analyser exhibits a response to interfering components associated with the NOx converter.
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Collier, T., Gregory, D., Rushton, M., and Hands, T., "Investigation into the Performance of an Ultra-fast Response NO Analyser Equipped with a NO2 to NO Converter for Gasoline and Diesel Exhaust NOx Measurements," SAE Technical Paper 2000-01-2954, 2000, https://doi.org/10.4271/2000-01-2954.Also In
References
- Heywood J.B. Internal Combustion Engine Fundamentals 1988
- Gregory, D. Marshall, R. A. Eves, B. Dearth, M. Hepburn, J. Brogan, M. Swallows, D. 1999 Evolution of Lean NO x Traps on PFI Lean-burn Engines SAE 1999-01-3498
- Marshall, R. A. Gregory, D. Eves, B. Peirce, G. Taylor, T. Cornish, S. Dearth, M. Hepburn, J. 1999 Optimising the aftertreatment configuration for NO x regeneration on a lean-NOx trap SAE 1999-01-3499
- Ketfi-Cherif, A. von Wissel, D. Beurthey, S. Sorinem, M. 2000 Modeling and control of a NO x trap catalyst
- Asik, J.R. Meyer, G.M. Meyer, G.M. 2000 Lean NO x trap desulfation through rapid air fuel modulation SAE 2000-01-1200
- Hammer, T. Broeer, S. 1998 Plasma enhanced selective catalytic reduction of NO x for diesel cars SAE 982428
- Allansson, R. Cooper, B.J. Thoss, J.E. Uusim\amki, A. Walker, A.P. Warren, J.P. 2000 European experience of high mileage durability of continuously regenerating diesel particulate filter technology [cm] SAE 2000-01-0480
- Hawker, P. Myers, N. Huethwohl, G. Vogel, H. Th. Bates, B. Magnusson, L. Bronnenberg, P. 1997 Experience with a new particulate trap technology in Europe SAE 970182
- Gregory, D. Brett, S. Ketcher, D. Marshall, R. Adachi, M. 1999 Automotive catalyst development using FT-IR spectroscopy and mass spectrometry SAE 1999-08-0175
- Reavell K. St.J. Collings N. Peckham M. Hands T. 1997 Simultaneous Fast Response NO and HC Measurements from a Spark Ignition Engine SAE 971610
- Peckham, M. Hands, T. Burrell, J. Collings, N. Schurov, S. 1998 Real-time, in-cylinder and exhaust NO measurements in a production SI engine SAE 980400
- Schurov, S. Collings, N. Hands, T. Peckham, M. Burrell, J. 1998 Fast response NO/HC measurements in the cylinder and exhaust port of a DI diesel engine SAE 980788
- Breitenbach L.P. Shelef M. Development of a Method for the Analysis of NO 2 and NH3 by NO-Measuring Instruments Journal of the Air Pollution Control Association 1973 23 2
- Ecophysics PLC 762 Photolytic Converter
- Cambustion f NO x 400 user manual, version 1.13
- Adachi, M. Inoue, K. Yamagishi, Y. Ishida, K. 1997 Discussion of operating parameters and analysis capability for a Fourier transform infrared emission analyzer SAE 971018
- Villinger, J. Federer, W. Dornauer, A. Weissnicht, A. Hoenig, M. Mayr, T. 1996 Dynamic monitoring of differentiated hydrocarbons in direct engine exhaust: a versatile tool in engine development SAE 960063
- Akashi, K. Inoue, K. Adachi, M. Ishida, K. Villinger, J. Federer, W. Dornauer, A. 1998 Utilization of a soft ionization mass spectrometer for ultra-high sensitivity and fast response emission measurement SAE 980046