Aldehyde and unburned fuel emissions from methanol-fueled heavy-duty diesel engines

Conference · Wed Jan 01 04:00:00 EST 1986

OSTI ID:5637211

Lipari, F; Keski-Hynnila, D

Aldehyde and unburned fuel emissions (UBF) were measured from experimental 6V-92TA and 6V-71N methanol-fueled heavy-duty diesel engines. The 6V-71N engine was tested with experimental oxidation catalytic converters. Formaldehyde accounted for 97-99% of the total aldehydes emitted from both engines. Aldehyde and unburned fuel concentrations were highest in the idle modes of the 13-mode test and decreased with increasing engine speed and load. The 13-mode weighted aldehyde and UBF emissions for the 6V-92TA engine were 0.10 G/BHP-HR and 2.01 G/BHP-HR, respectively. The 13-mode aldehyde and UBF emissions from the 6V-71N engine before catalytic treatment were 0.32 G/BHP-HR and 4.51 G/BHP-HR, respectively. These emissions were reduced to 0.19 G/BHP-HR and 1.10 G/BHP-HR with catalytic treatment. Total aldehyde emissions from the methanol-fueled engines compared favorably with the 0.07 to 0.28 G/BHP-HR range reported for heavy-duty conventionally fueld diesel engines. Formaldehyde emissions from these engines were higher than those of conventionally fueled diesel engines but similar to those of other methanol-fueled diesel engines. Particulate and NO/subX/ emissions from these engines were very low and ranged from 0.02-0.22 G/BHP-HR and 1.45-1.66 G/BHP-HR, respectively. These engines show promise for meeting the 1991 urban bus 0.10 G/BHP-HR particulate standard.

• Research Organization: General Motors Res. Lab., Warren, MI
• OSTI ID: 5637211
• Report Number(s): CONF-860263-
• Country of Publication: United States
• Language: English

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ABSTRACTS
AIR POLLUTION MONITORING
ALCOHOL FUELS
ALDEHYDES
BUSES
CATALYTIC CONVERTERS
CHALCOGENIDES
COMBUSTION PROPERTIES
COMPARATIVE EVALUATIONS
DIESEL ENGINES
DOCUMENT TYPES
DYNAMIC LOADS
EMISSION
ENGINES
EQUIPMENT
EXHAUST GASES
FLUIDS
FORMALDEHYDE
FUEL SUBSTITUTION
FUELS
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
LEADING ABSTRACT
MEETINGS
METHANOL FUELS
NITROGEN COMPOUNDS
NITROGEN OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PARTICLES
PARTICULATES
PERFORMANCE TESTING
POLLUTION CONTROL EQUIPMENT
POLLUTION REGULATIONS
REGULATIONS
SYNTHETIC FUELS
TESTING
TRANSPORTATION SYSTEMS
VEHICLES
WASTES