Document Detail

Impact of engine lubricant properties on regulated gaseous emissions of 2000-2001 model-year gasoline vehicles.
MedLine Citation:
PMID:  15061609     Owner:  NLM     Status:  MEDLINE    
The impact of the sulfur (S) content in lubricating oil was evaluated for four ultra-low-emission vehicles and two super-ultra-low-emission vehicles, all with low mileage. The S content in the lube oils ranged from 0.01 to 0.76%, while the S content of the gasoline was fixed at 0.2 ppmw. Vehicles were configured with aged catalysts and tested over the Federal Test Procedure, at idle and at 50-mph cruise conditions. In all testing modes, variations in the S level of the lubricant did not significantly affect the regulated gas-phase tailpipe emissions. In addition to the regulated gas-phase emissions, a key element of the research was measuring the engine-out sulfur dioxide (SO2) in near-real-time. This research used a new methodology based on a differential optical absorption spectrometer (DOAS) to measure SO2 from the lubricants used in this study. With the DOAS, the contribution of SO2 emissions for the highest-S lubricant was found to range from less than 1 to 6 ppm on a gasoline S equivalent basis over the range of vehicles and test cycles used. The development and operation of the DOAS is discussed in this paper.
Thomas D Durbin; Claudia G Sauer; John T Pisano; Sam H Rhee; Tao Huai; J Wayne Miller; Gervase I MacKay; John Robbins; Heather Gamble; Albert M Hochhauser; Michael C Ingham; Robert A Gorse; Loren K Beard
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of the Air & Waste Management Association (1995)     Volume:  54     ISSN:  1096-2247     ISO Abbreviation:  J Air Waste Manag Assoc     Publication Date:  2004 Mar 
Date Detail:
Created Date:  2004-04-05     Completed Date:  2004-04-22     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9503111     Medline TA:  J Air Waste Manag Assoc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  258-68     Citation Subset:  IM    
Bourns College of Engineering-Center for Environmental Research and Technology, University of California, Riverside, California, USA.
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MeSH Terms
Air Pollutants / analysis*
Environmental Monitoring
Sulfur Dioxide / analysis*
Vehicle Emissions / analysis*
Reg. No./Substance:
0/Air Pollutants; 0/Gasoline; 0/Vehicle Emissions; 7446-09-5/Sulfur Dioxide

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