Comparison Between Lean-Burn and Stoichiometric Technologies for CNG Heavy-Duty Engines 950057
Natural gas is a viable alternative fuel to obtain low exhaust emissions. A heavy duty DI Diesel engine was converted to Otto cycle natural gas operation. Two alternative solutions were compared:
lean-burn technology;
stoichiometric feed with three-way catalyst and EGR.
Power and efficiency were similar for the two above solutions, and exhaust temperature resulted similar to the diesel engine in both cases due to the diluted operation.
The lean bum engine met EURO II ECE-R49 limits except for total hydrocarbons. Stoichiometric engine emissions resulted much lower than the limits. Particulate emissions were quite negligible for the two solutions.
Citation: Corbo, P., Gambino, M., Iannaccone, S., and Unich, A., "Comparison Between Lean-Burn and Stoichiometric Technologies for CNG Heavy-Duty Engines," SAE Technical Paper 950057, 1995, https://doi.org/10.4271/950057. Download Citation
Author(s):
P. Corbo, M. Gambino, S. Iannaccone, A. Unich
Affiliated:
Istituto Motori-CNR
Pages: 6
Event:
International Congress & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Alternative Fuels for Low Emissions and Improved Performance in Ci and Heavy Duty Engines-SP-1093
Related Topics:
Natural gas
Exhaust emissions
Diesel / compression ignition engines
Particulate matter (PM)
Alternative fuels
Three-way catalysts
Lean burn engines
Hydrocarbons
Compressed natural gas
Exhaust gas recirculation (EGR)
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