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Aftertreatment Strategy for Reducing Emissions from an Ethanol Fueled CI Engine
Technical Paper
2009-01-1949
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A nine liters ethanol-fueled CI engine was equipped with aftertreatment devices while different ratios of exhaust gas recirculation (EGR) were tested. The NOX emissions were negatively correlated to the EGR-ratio and NOX reductions of between 33% and 73% were obtained. Unfortunately, the decrease in NOX was followed by increased emissions of carbon monoxide, hydrocarbons, particulate matter and higher fuel consumption. The particle number emission increased approximately 4 times and particle sizes above 200 nm became more frequent when using EGR. The remedy for these emissions was to combine an oxidation catalyst and a diesel particle filter (DPF), while keeping the EGR-ratio low to minimize fuel consumption. Equipped like this, the engine passed the Euro 5 regulation as well as the Enhanced Environmentally Friendly Vehicles standard (EEV).
Authors
Citation
Haupt, D. and Nord, K., "Aftertreatment Strategy for Reducing Emissions from an Ethanol Fueled CI Engine," SAE Technical Paper 2009-01-1949, 2009, https://doi.org/10.4271/2009-01-1949.Also In
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