摘要:
Out of range of monoterpenes, camphene has particular usefulness in a gasoline fuel formulation for the purpose of improving or maintaining motor octone number (MON) and/or research octone number (RON) of the fuel formulation.
摘要:
The present invention provides the use of from 0.1 to 5 wt%, based on overall gasoline composition, of a base oil having a kinematic viscosity at 100 °C of at least 1 cSt, in a gasoline composition comprising a major amount of gasoline, for improving the acceleration response of a four-stroke spark-ignition internal combustion engine fuelled by the gasoline composition. The present invention further provides a method of operating a four-stroke spark-ignition internal combustion engine, which method involves introducing into a combustion chamber of said engine a gasoline composition comprising: (a) a major amount of a gasoline; and (b) from 0.1 wt% to 5 wt%, based on the overall gasoline composition, of a base oil having a kinematic viscosity at 100 °C of at least 1 cSt.
摘要:
Gasoline compositions are provided comprising component A, an alkyl alkenoate compound, or a mixture of alkyl alkenoate compounds, selected from compounds of formula I: wherein R1 is a linear alkenyl group containing 3 to 5 carbon atoms, optionally substituted by a methyl group, and R2 is a linear or branched alkyl group containing 1 to 6 carbon atoms, with the proviso that component A has a boiling point or boiling point range within the temperature range of from 90 to 200° C., and at least one additional selected component.
摘要:
A gasoline fuel formulation which contains 60% v/v or more of a combination of (a) a biologically-derived alcohol and (b) a mixture of C4 to C12 hydrocarbon fuel components, all of which hydrocarbon fuel components have been derived, whether directly or indirectly, from catalytic conversion of a biologically-derived oxygenate component, wherein the concentration of the alcohol (a) in the formulation is from 0.1 to 30% v/v.
摘要:
The use of at least one C7-C30 alkane in a diesel fuel formulation for the purpose of reducing fuel injector deposits, in particular fuel internal injector deposits, and/or for the purpose of reducing filter deposits, and/or for the purpose of increasing fuel economy and/or for the purpose of reducing power loss and/or for the purpose of improving driveability.
摘要:
A process for preparing a hydrocarbon or mixture of hydrocarbons comprising the steps of (i) hydrogenating furfural, 5-hydroxymethylfurfural or a mixture of furfural and 5-hydroxymethylfurfural to provide furfuryl alcohol, 2, 5-furandimethanol or a mixture of furfuryl alcohol and 2, 5-furandimethanol; (ii) oligomerizing the alcohol or mixture of alcohols of step (i) in the presence of an acidic catalyst to provide a carbon-carbon coupled oligomer; and (iii) hydrogenating the oligomer of step (ii) is provided. The hydrocarbons are useful as fuel blending components. Processes for controlling the oligomerization of alcohol or mixture of alcohols to optimise the production of oligomers suitable for conversion to hydrocarbons useful as kerosene and diesel components are also provided.