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Title: THE EFFECTS OF BIODIESEL BLENDS AND ARCO EC-DIESEL ON EMISSIONS from LIGHT HEAVY-DUTY DIESEL VEHICLES

Chassis dynamometer tests were performed on 7 light heavy-duty diesel trucks comparing the emissions of a California diesel fuel with emissions from 4 other fuels: ARCO EC-diesel (EC-D) and three 20% biodiesel blends (1 yellow grease and 2 soy-based). The EC-D and the yellow grease biodiesel blend both showed significant reductions in THC and CO emissions over the test vehicle fleet. EC-D also showed reductions in PM emission rates. NOx emissions were comparable for the different fuel types over the range of vehicles tested. The soy-based biodiesel blends did not show significant or consistent emissions differences over all test vehicles. Total carbon accounted for more than 70% of the PM mass for 4 of the 5 sampled vehicles. Elemental and organic carbon ratios varied significantly from vehicle-to-vehicle but showed very little fuel dependence. Inorganic species represented a smaller portion of the composite total, ranging from 0.2 to 3.3% of the total PM. Total PAH emissions ranged from approximately 1.8 mg/mi to 67.8 mg/mi over the different vehicle/fuel combinations representing between 1.6 and 3.8% of the total PM mass.
Authors:
Publication Date:
OSTI Identifier:
828001
Report Number(s):
CONF-200108-93
TRN: US200428%%818
Resource Type:
Conference
Resource Relation:
Conference: 7th Diesel Engine Emissions Reduction (DEER) Workshop 2001, Portsmouth, VA (US), 08/05/2001--08/09/2001; Other Information: PBD: 5 Aug 2001
Research Org:
Bourns College of Engineering, Center for Environmental Research and Technology, University of California, Riverside, CA 92521 (US)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EE) (US)
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; CALIFORNIA; CARBON; DIESEL ENGINES; DIESEL FUELS; DYNAMOMETERS; GREASES