Journal Article
Phenomenological Modelling of Oxygen-Enriched Combustion and Pollutant Formation in Heavy-Duty Diesel Engines using Exhaust Gas Recirculation
2012-09-10
2012-01-1725
A theoretical study is conducted to examine the effects of oxygen enrichment of intake air and exhaust gas recirculation (EGR) on heavy-duty (HD) diesel engine performance characteristics and pollutant emissions. A phenomenological multi-zone model was properly modified and used to assess the impact of intake air oxygen-enhancement and EGR on the operating and environmental behavior of a HD diesel engine under various operating conditions. Initially, an experimental validation was performed to assess the predictive ability of the multi-zone model using existing data from a HD turbocharged common-rail diesel engine at the 12 operating points of the European Stationary Cycle (ESC) considering certain high-pressure cooled EGR rate at each operating point.
