Neat Methanol Combustion in a D.I. Diesel Engine Using Catalytically Coated Glow Plugs

Paper #:
  • 912418

Published:
  • 1991-10-01
Citation:
Mitchell, W., Litzinger, T., and Santavicca, D., "Neat Methanol Combustion in a D.I. Diesel Engine Using Catalytically Coated Glow Plugs," SAE Technical Paper 912418, 1991, https://doi.org/10.4271/912418.
Pages:
11
Abstract:
Enhancement of methanol combustion in a direct injected Diesel engine using catalytically coated glow plugs was examined for platinum and palladium catalysts and compared to a non-catalytic baseline case. Experiments were performed for 6 and 10 brake Kilowatts (bKW) at 2500 rpm. Comparisons were made based on combustion, performance, and emissions including carbon monoxide (CO), oxides of nitrogen (NOx), unburned hydrocarbons (UHC), unburned methanol (UBM), and aldehydes.Results show a decrease in glow plug temperature of 100 K is achievable using platinum catalysts, and 150 K for palladium. Furthermore, the palladium catalyst was found to provide better combustion characteristics than the platinum catalyst. Also, the use of both catalysts produced lower aldehyde emissions, and the palladium reduced NOx emissions as well. However, unburned methanol increased for both catalytic glow plugs with respect to the non-catalytic case.
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