Aldehyde and Unburned Fuel Emissions from Methanol-Fueled Heavy-Duty Diesel Engines 860307
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 NOx 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.
Citation: Lipari, F. and Keski-Hynnila, D., "Aldehyde and Unburned Fuel Emissions from Methanol-Fueled Heavy-Duty Diesel Engines," SAE Technical Paper 860307, 1986, https://doi.org/10.4271/860307. Download Citation
Author(s):
Frank Lipari, Donald Keski-Hynnila
Pages: 16
Event:
SAE International Congress and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE Transactions 1986-V95-86
Related Topics:
Diesel / compression ignition engines
Catalytic converters
Emissions
Particulate matter (PM)
Buses
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