Cooperative evaluation of techniques for measuring nitric oxide and carbon monoxide in diesel exhaust. Phase IV. Test results

Technical Report · Wed Jan 01 04:00:00 EST 1975

OSTI ID:7157164

Techniques for measuring nitric oxide and carbon monoxide in diesel exhaust were cooperatively evaluated by distributing a 6-cylinder diesel engine to 14 participants who measured the emissions at low-, medium-, and high-power operating conditions with no restrictions on the type of equipment used. The results were also compared with earlier cooperative tests (Phase III) which involved simultaneous measurement of emissions. In general, the results were disappointing, especially in comparison with the Phase III results. Nitric oxide data obtained by chemiluminescence analyzers were more scattered and significantly lower than data obtained by the more standard non-dispersive infrared method. The range from average for the CO measurements between different laboratories varied from 19 to 76 percent, depending on the engine operation mode; and the standard deviation varied from 5.6 to 24 percent. The range from average for the NO data obtained by the 15 participants varied from 27 to 49 percent, and the standard deviation was 7.9 to 16 percent.

• Research Organization: Coordinating Research Council, Inc., New York (USA)
• OSTI ID: 7157164
• Report Number(s): CRC-472
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330701* -- Emission Control-- Nitrogen Oxides
330702 -- Emission Control-- Carbon Monoxide
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMILUMINESCENCE
COMPARATIVE EVALUATIONS
DIESEL ENGINES
ENGINES
EXHAUST GASES
GAS ANALYSIS
GASEOUS WASTES
INTERNAL COMBUSTION ENGINES
LUMINESCENCE
MEASURING METHODS
NITRIC OXIDE
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
TESTING
WASTES