USE OF ALCOHOLS IN FUELS FOR SPARK IGNITION ENGINES.

摘要

The use of at least one C4 alcohol to increase the vapour pressure of a fuel for spark-ignition engines comprising base fuel and ethanol in which use the at least one C4 alcohol is added to a fuel comprising base fuel and ethanol to produce a resultant fuel mixture comprising 15-50 % by volume of base fuel, 15-65 % by volume of ethanol and 15 to 50 % C4 alcohol. The resultant fuel mixture exhibits an adequately high vapour pressure, for example, which meets the specification, and also exhibits a good start behaviour even at winter temperatures.