Fuels for spark-ignition engines

This chapter presents a relatively unbiased evaluation of the advantages and disadvantages of methanol/gasoline blends as fuels for spark ignition engines. The emphasis is on the use of these blends as possible fuels for. the existing and near-future U. S. auto population. The evaluation is divided into three basic areas ... 

Refined petroleum distillate, normally boiling within the limits of 30-220°C, which, combined with certain additives, is used as fuel for spark-ignition engines. By extension, the term is also applied to other products that boil within this range. 

There are several important Hquid fuels, ranging from volatile fuels for internal combustion engines to heavy hydrocarbon fractions, sold commercially as fuel oils. The technology for the combustion of Hquid fuels for spark-ignition and compression-ignition internal combustion engines is not described here. 

Uses. Fuel for spark-ignited internal combustion engines... 

Motor fuels are an important product. Gasoline is required for spark-ignition engines. The different needs of aircraft and vehicles are constrained by the different qualities of the fuels produced in the refineries. Aviation fuels demand a high octane. Other products are added to motor fuels to improve their performance in automobiles. 

Term used in the UK for a light hydrocarbon liquid fuel for spark-ignition internal combustion engines. Other terms for such fuel are gas(oline) and motor spirit. 

A fundamental and important property of gasoline is volatility. Volatility is described by vapor pressme and distillation, and these specifications may vary through the year and across geographical areas in order to match the volatility of the fuel to ambient conditions. Gasoline is typically used exclusively as a fuel for spark ignited internal combustion engines. 

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