COOPERATIVE STUDY OF HEAVY DUTY DIESEL EMISSION MEASUREMENT METHODS
Among the objectives of this research were evaluation of a variety of designs in chemiluminescence analyzers used in heavy-duty testing; determination of the effects of sample line temperature and sample flow rates on emission values evaluation of an interference-free dual detector NDIR NOX analyzer system; comparison of emission results attained in parallel vs. series flow configuration, of five vs. ten-minute modes in test cycles and of emission results attained with Teflon vs. stainless steel sampling lines. Comparative findings involving instrument equivalency, composite cycles and modal differences were indeterminate. A major problem involving the NO/NOX crossover was uncovered. Until it is resolved there remains a question regarding the proper utilization of NO sub 2 to NO converters. The best performance in the study was demonstrated by the interference free NDIR system.
- For meeting held February 27-March 3, 1978.
Warrendale, PA United States 15096
- Perez, J M
- Clemmens, W C
- Broering, L C
- JOHNSON, J H
- Publication Date: 1978
- Features: References;
- Pagination: 23 p.
- TRT Terms: Air pollution; Diesel engine exhaust gases; Measuring instruments; Nitric oxide; Nitrogen oxides
- Subject Areas: Environment; Railroads;
- Accession Number: 00180369
- Record Type: Publication
- Source Agency: Engineering Index
- Report/Paper Numbers: n 780112 Preprint
- Files: TRIS
- Created Date: Oct 12 1978 12:00AM