PUBL 4247-1975

FINAL REPORT (PART I) ON MOTOR-FUEL COMPOSITION AND PHOTOCHEMICAL SMOG

PUBL 4247-1975 發布歷史

SCOPE OF PROGRAM This program was designed to relate the effects of fuel composition on exhaust composition from vehicles equipped with various types of emission control systems@ and in turn to relate the effects of exhaust composition on photochemical smog manifestations. The principal effects are presented in terms of aromatic/olefin/paraffin content of the fuel and exhaust. The smog manifestations of principal concern were ozone formation@ aerosol formation@ and eye irritation. Prior to studying the complex effects of auto exhaust@ studies were conducted to validate the operation of the car used in this program@ the sampling and transfer systems@ and the conditions and operations of the smog chamber. Four nonleaded fuels were used in the major part of the program@ with two additional nonleaded fuels in the latter part of the program. These fuels were used with the project car@ a 1971 Chevrolet 350 CID@ 8-cylinder engine@ and with a 1969 Plymouth equipped with nonproduction exhaust gas recirculation (EGR). The exhaust was generated via the 23-minute DHEW Urban Dynamometer Driving Schedule (LA-4 cycle). This exhaust was diluted about 10:1 in an exhaust tunnel and fed into a large holding bag where the exhaust was usually further diluted another factor of two@ a portion of the exhaust was then fed from the holding bag to the smog chamber - usually at an exhaust hydrocarbon loading of 8 ppm C. With exception of a series of experiments in which the chamber was operated dynamically@ Battelle's 610cu-ft chamber was operated in a batch-wise (static) mode. Chamber reactions were monitored for the standard smog parameters@ including total hydrocarbon@ NO@ NO2@ O3@ CO@ SO2@ PAN@ formaldehyde and total aldehydes@ as well as eye irritation and aerosol content (light scattering) and condensation nuclei (CN) count. Detailed chromatographic analysis of the exhaust hydrocarbon was conducted at three times during the smog reaction@ usually at the start@ midway@ and near the end (5 to 6 hours) of the experiment. Profiles of the chamber runs and tabulations of the detailed GC hydrocarbon data are presented in Appendixes D and E. Two statistical routines@ regression analysis and AID analysis@ have been applied to all the principal smog data generated in this program.

PUBL 4247-1975由API - American Petroleum Institute 發布于 1975-04-01，并于 2011-03-11 實施。

PUBL 4247-1975 發布之時，引用了標準

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PUBL 4247-1975的歷代版本如下：

• 1975年04月01日 PUBL 4247-1975

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標準號

PUBL 4247-1975

發布日期

1975年04月01日

實施日期

2011年03月11日

廢止日期

無

中國標準分類號

/

國際標準分類號

/

發布單位

API - American Petroleum Institute

引用標準

157

適用范圍

SCOPE OF PROGRAM This program was designed to relate the effects of fuel composition on exhaust composition from vehicles equipped with various types of emission control systems@ and in turn to relate the effects of exhaust composition on photochemical smog manifestations. The principal effects are presented in terms of aromatic/olefin/paraffin content of the fuel and exhaust. The smog manifestations of principal concern were ozone formation@ aerosol formation@ and eye irritation. Prior to studying the complex effects of auto exhaust@ studies were conducted to validate the operation of the car used in this program@ the sampling and transfer systems@ and the conditions and operations of the smog chamber. Four nonleaded fuels were used in the major part of the program@ with two additional nonleaded fuels in the latter part of the program. These fuels were used with the project car@ a 1971 Chevrolet 350 CID@ 8-cylinder engine@ and with a 1969 Plymouth equipped with nonproduction exhaust gas recirculation (EGR). The exhaust was generated via the 23-minute DHEW Urban Dynamometer Driving Schedule (LA-4 cycle). This exhaust was diluted about 10:1 in an exhaust tunnel and fed into a large holding bag where the exhaust was usually further diluted another factor of two@ a portion of the exhaust was then fed from the holding bag to the smog chamber - usually at an exhaust hydrocarbon loading of 8 ppm C. With exception of a series of experiments in which the chamber was operated dynamically@ Battelle's 610cu-ft chamber was operated in a batch-wise (static) mode. Chamber reactions were monitored for the standard smog parameters@ including total hydrocarbon@ NO@ NO2@ O3@ CO@ SO2@ PAN@ formaldehyde and total aldehydes@ as well as eye irritation and aerosol content (light scattering) and condensation nuclei (CN) count. Detailed chromatographic analysis of the exhaust hydrocarbon was conducted at three times during the smog reaction@ usually at the start@ midway@ and near the end (5 to 6 hours) of the experiment. Profiles of the chamber runs and tabulations of the detailed GC hydrocarbon data are presented in Appendixes D and E. Two statistical routines@ regression analysis and AID analysis@ have been applied to all the principal smog data generated in this program.