Title:
LEAD-FREE GASOLINE
Document Type and Number:
Japanese Patent JP3664454
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain gasoline capable of reducing photochemical reactivity and harmful property by lowering ozone production ability of evaporation gas discharged from automobile and reducing benzene content.
SOLUTION: In this lead-free gasoline, evaporation gas ozone producing index X expressed by the formula, X=Σ(Ci×MIRi)+1.6×PVP [Ci represents concentration (wt.%) of the component (i) of a 2-6C olefinic hydrocarbon or a diolefin-based hydrocarbon and MIRi represents MIR value (gO3/gNMOG) of the component (i) and RVP represents vapor pressure (kPa) of lead-free gasoline and is expressed by the formula 40≤RVP≤100] and harmfulness index Y of evaporation gas expressed by the formula, Y=BZ×(0.0715×RVP-1.045) [BZ represents benzene concentration (wt.%) contained in the lead-free gasoline and RVP is same as above definition].
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Inventors:
Keiichi Oki
Kazuhito Ueshima
Kazuhito Ueshima
Application Number:
JP18874695A
Publication Date:
June 29, 2005
Filing Date:
July 25, 1995
Export Citation:
Assignee:
IDEMITSU KOSAN CO.,LTD.
International Classes:
C10L1/04; C10L10/10; (IPC1-7): C10L1/04
Other References:
Auto/Oil Air Quality Improvement Research Program,Volume II,米国,Society of Automotive Engineers, Inc,,1993年10月,p99-123
Auto/Oil Air Quality Improvement Research Program,米国,Society of Automotive Engineers,Inc.,1992年 2月,p105-118
Auto/Oil Air Quality Improvement Research Program,米国,Society of Automotive Engineers,Inc.,1992年 2月,p105-118
Attorney, Agent or Firm:
Tamotsu Otani
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