Regulated and unregulated exhaust emissions (individual hydrocarbons, aldehydes and ketones, polynuclear aromatic hydrocarbons (PAH), and nitro-polynuclear aromatic hydrocarbons (NPAH)) were characterized for the following alternate diesel combustion modes: premixed charge compression ignition (PCCI), and low-temperature combustion (LTC). PCCI and LTC were studied on a PSA light-duty high-speed diesel engine. Engine-out emissions of carbonyl compounds were significantly increased for all LTC modes and for PCCI-Lean conditions as compared to diesel operation; however, PCCI-Rich produced much lower carbonyl emissions than diesel operations. For PAH compounds, emissions were found to be substantially increased over baseline diesel operation for LTC-Lean, LTC-Rich, and PCCI-Lean conditions. PCCI-Rich operation, however, gave PAH emission rates comparable to baseline diesel operation. Total NPAH emissions were much higher for LTC-Lean and LTC-Rich operation as compared to baseline diesel operation.
Unregulated Exhaust Emissions from Alternate Diesel Combustion Modes
Sae Technical Papers
Powertrain & Fluid Systems Conference and Exhibition ; 2006
2006-10-16
Conference paper
English
Unregulated exhaust emissions from alternate diesel combustion modes
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