Gaseous and particulate emissions from gasoline- and diesel-powered heavy-duty trucks
Gaseous and particulate emission rates from seven class 2B, one class 5 and six class 6 heavy-duty gasoline- and diesel-powered trucks were determined using transient chassis dynamometer test procedures. All vehicles were tested at approximately 70% of their rated gross vehicle weight over the Heavy-Duty Transient Cycle and the Durham Road Route driving cycles. The sensitivity of emission rates to vehicle configuration, engine design, and driving cycle characteristics was examined. Emissions characterization included total hydrocarbons, carbon monoxide, oxides of nitrogen, fuel economy, total particulate matter, CH/sub 2/Cl/sub 2/ %-extractables, particulate organics, inert material, particle size less than 2..mu.., and lead, bromine, and chlorine analyses. For a particular type of engine (gasoline or diesel), class 2B truck emission rates were less then class 5 or 6 truck emission rates. Hydrocarbon and carbon monoxide emissions and fuel consumption were significantly higher with the gasoline trucks than with the diesel trucks. Total particulate, particulate organics, and inert material emissions were significantly greater with the diesel trucks. Hydrocarbons, carbon monoxide, total particulate emissions, and fuel consumption were sensitive to the characteristics of the transient driving cycles.
- Research Organization:
- Mobile Source Emissions Research Branch, Emissions Measurement and Chara. Div., Atmospheric Sciences Research Lab., U.S. Environmental Protection Agency
- OSTI ID:
- 5758103
- Report Number(s):
- CONF-860263-
- Country of Publication:
- United States
- Language:
- English
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54 ENVIRONMENTAL SCIENCES
ABSTRACTS
AIR POLLUTION MONITORING
BROMINE
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHLORINE COMPOUNDS
COMPARATIVE EVALUATIONS
DIESEL ENGINES
DOCUMENT TYPES
ELEMENTS
EMISSION
ENGINES
EXHAUST GASES
FLUIDS
FUEL ECONOMY
GASEOUS WASTES
GASES
HALOGEN COMPOUNDS
HALOGENS
HEAT ENGINES
HYDROCARBONS
INTERNAL COMBUSTION ENGINES
LEAD
LEADING ABSTRACT
MEETINGS
METALS
NITROGEN COMPOUNDS
NITROGEN OXIDES
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PARTICLE SIZE
PARTICLES
PARTICULATES
SIZE
SPARK IGNITION ENGINES
TRANSIENTS
WASTES