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The association of automotive fuel composition with exhaust reactivity.

Authors
Dimitriades-B; Eccleston-BH; Sturm-GP Jr.; Raible-CJ
Source
NTIS: PB 222 609 :1-51
Link
NIOSHTIC No.
10009007
Abstract
The association of automotive fuel composition with exhaust reactivity was studied in an experimental program that involved testing with different automotive engines and with gasolines of varied composition. Results showed clearly the exhaust reactivity to increase with increasing levels of polyalkylbenzenes in the fuel. No other systematic patterns of high significance were detected in the association of exhaust reactivity with several broadly defined groups of fuel components. For the purpose of this study, had it been possible, fuel composition should have been defined and expressed in terms of component groups such that the potential for exhaust reactivity would be the same within each group and different from group to group. Classification of fuel components in terms of the paraffins-olefins-aromatics groups does not meet the latter requirements. For appropriate classification of fuel components more information is needed on the combustion of hydrocarbons in the multicylinder internal combustion engine. Statistical analysis of the mass emissions data showed significant car and fuel effects on hydrocarbon, carbon monoxide, nitric oxide, total aldehydes, and formaldehyde emission levels and on total photochemical reactivity. Car-fuel interactions were not significant at the 90-pct level. Correlations were found between mass emission parameters and fuel composition.
Publication Date
19730101
Document Type
IH; Report of Investigations
Fiscal Year
1973
NTIS Accession No.
PB-222609
NTIS Price
A05
Identifying No.
RI-7756
NIOSH Division
BERC
Source Name
NTIS: PB 222 609
State
OK
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