Record Display for the EPA National Library Catalog

RECORD NUMBER: 24 OF 188

OLS Field Name OLS Field Data
Main Title Characterization of emissions and fuel economy of in-use diesel automobiles /
Author Gibbs, Richard E. ; Hyde, James D. ; Whitby, Robert A. ; Choudhury, Delip R.
Other Authors
Author Title of a Work
Hyde, James D.
Whitby, Robert A.
Choudhury, Delip R.
CORP Author New York State Dept. of Environmental Conservation, Albany. ;New York State Dept. of Health, Albany.;Environmental Sciences Research Lab., Research Triangle Park, NC.
Publisher U.S. Environmental Protection Agency, Office of Research and Development, Environmental Sciences Research Laboratory,
Year Published 1983
Report Number PB83-262071; EPA-600/3-83-087; /EPA-R-805934
Stock Number PB83-262071
OCLC Number 759121137
Subjects Automobiles--United States--Motors (Diesel) ; Automobiles--United States--Motors--Exhaust gas. ; Automobiles--United States--Fuel consumption.
Additional Subjects Exhaust emissions ; Air pollution ; Hydrocarbons ; Carbon monoxide ; Carbon dioxide ; Nitrogen oxides ; Particles ; Mutagens ; Bioassay ; Chemical analysis ; Light duty vehicles ; Diesel engine exhaust ; Fuel economy ; Air pollution detection ; Ames test
Internet Access
Description Access URL
http://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=9100XWHK.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
ELCD  EPA 600-3-83-087 NVFEL Library/Ann Arbor, MI 11/07/2011
NTIS  PB83-262071 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation xviii, 169 p. : ill., charts ; 28 cm.
Abstract
Exhaust emissions from twenty 1977-1980 in-use light-duty diesel vehicles were measured to determine the effects of driving cycle, mileage accumulation, and test conditions. Hydrocarbons, CO, CO2, NOx and particulates were measured for the FTP, HFET, CFDS, NYCC, 50 mph cruise (50C) and idle cycles. Particulate extract was tested for mutagenicity by the Ames method. Selected composite extracts were chemically analyzed and bioassayed. Emissions (g/mi) and fuel consumption generally increased in order 50C < HFET < CFDS < FTP < NYCC. A new method for real-time particulate measurement is described using a Tapered Element Oscillating Microbalance (TEOM). Bulk extract samples were fractionated and analyzed by GC, GC/MS and HPLC/UV. The acidic fraction had the highest specific activity, but most total activity was in the neutral fraction which contained fluorenones and oxy-PAH's.
Notes
Includes bibliographical references (p. 112-117). "PB83-262071." "September 1983." "EPA-600/3-83-087"--T.p. "EPA Grant R805934"--T.p. "Project Officer: Peter Gabele"--T.p.
Contents Notes
Exhaust emissions from twenty 1977-1980 in-use light-duty diesel vehicles were measured to determine the effects of driving cycle, mileage accumulation, and test conditions. Hydrocarbons, CO, COb2s, and NOx and particulates were measured for FTP, HFET, CFDS, NYCC, 50 mph cruise (50C) and idle cycles. Particulate extract was tested for mutagenicity by the Ames method. Selected composite extracts were chemically analyzed and bioassayed. Emissions (g/mi) and fuel consumption generally increased in order 50C < HFET < CFDS < FTP < NYCC. GM vehicles generally had higher emissions and more sensitivity to driving cycle than the Mercedes-Benz and VW vehicles. Particulate extract emissions were not generally cycle dependent. NOx emissions decreased with mileage accumulation while other emissions increased or were unaffected. Fuel economy was determined by the carbon balance method, by fuel meters and by fueling records. Over-the-road fuel economy was always lower than carbon balance fuel economy. A new method for real-time particulate measurement is described using a Tapered Element Oscillating Microbalance (TEOM). The TEOM mass was within 10% of the gravimetric mass with a response time of 8-15s. Effects of driving cycle sequence, dilution tunnel, sub-FTP temperatures and mutagenic artifact formation were examined. Bulk extract samples were fractionated and analyzed by GC, GC/MS and HPLC/UV. The acidic fraction had the highest specific activity, but most total activity was in the neutral fraction which contained fluorenones and oxy-PAH's.