Ambient temperature and driving cycle effects on CNG motor vehicle emission
This paper describes an emissions study of two vans powered by compressed natural gas (CNG). One van was relatively new, while the other had been driven more than 120,000 mi. The purpose of the study was to obtain emissions information which could be used to predict the impact of CNG use on ambient air quality and air toxic concentrations, and to develop a better understanding of the effect of ambient temperature variations on CNG emissions. Using four different driving cycles, emission tests were carried out at 20{degree}F, 75{degree}F, and 105{degree}F. Test results agree with previous findings that document low emissions of nonmethane hydrocarbons from CNG vehicles. Results also confirm the expectation that CNG emissions are not significantly affected by ambient temperature variations, although an increase in formaldehyde emission was noted for the 20{degree}F cold-start tests.
- OSTI ID:
- 5664773
- Report Number(s):
- CONF-9010205-
- Resource Relation:
- Conference: 1990 Society of Automotive Engineers (SAE) international fuels and lubricants conference and exposition, Tulsa, OK (USA), 22-25 Oct 1990; Other Information: SAE Technical Paper 902069
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
03 NATURAL GAS
NATURAL GAS
TEMPERATURE DEPENDENCE
AIR QUALITY
EMISSION
FORMALDEHYDE
HYDROCARBONS
TOXIC MATERIALS
VEHICLES
ALDEHYDES
ENERGY SOURCES
ENVIRONMENTAL QUALITY
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
MATERIALS
ORGANIC COMPOUNDS
330102* - Internal Combustion Engines- Diesel
330704 - Emission Control- Hydrocarbons
030000 - Natural Gas