The report describes the second phase of an effort to develop a standard diesel exhaust which may be used in the future development of diesel exhaust aftertreatment. Phase I consisted of a literature review and creation of a database of engine-out diesel emissions. To supplement limited data on light-duty diesel emissions, this second phase was initiated. The experimental effort in this second phase assessed the composition of light-duty diesel exhaust at several operating conditions and utilized that data to recommend a possible 'recipe' for light-duty diesel engine exhaust. The effort was broken down into seven tasks. The tasks included fuel selection, engine and vehicle selection, engine operating conditions, exhaust measurement procedures, experimental program, data analysis, and reporting. The fuel selected for this study was a 2007 ultra-low sulfur diesel fuel. Four vehicles, each with a minimum of 5000 accumulated miles of operation, were selected for testing in this phase. These vehicles included: a 2004 Chevrolet Silverado 2500HD with a 6.6 L Duramax diesel engine (300 hp at 3100 rpm and 520 ft-lbs of torque at 1800 rpm); a 2004 Ford F-350 with a 6.0 L Powerstroke (International) V8 turbodiesel engine (325 hp at 3300 rpm and 560 lb-ft of torque at 2000 rpm); a 2004 Dodge Sprinter passenger van with a 2.7 L Mercedes-Benz in-line 5 cylinder engine (154 hp at 3800 rpm and 243 ft-lbs at 1600 rpm); and a 2004 Volkswagen Jetta with a 1.9 L TDI engine (100 hp at 4000 rpm and 177 ftlbs at 1800 rpm). Each vehicle was tested at five steady-state engine operating conditions: Rated speed at 75 percent torque; rated speed at 50 percent torque; peak torque speed at 50 percent torque; peak torque speed at 25 percent torque; and idle.
Diesel Exhaust Standard. Phase 2: CRC Project No. AVFL-10b
2005
175 pages
Report
No indication
English
Synopsis of environmental protection agency diesel exhaust characterization project
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