A gasoline engine has a compression ratio of 4.00 and uses a gas for which y = 1.40. (a) What is the efficiency of the engine if it operates in an idealized Otto cycle? % (b) If the actual efficiency is 15.0%, what fraction of the fuel is wasted as a result of friction and energy losses by heat that could by avoided in a reversible engine? (Assume complete combustion of the air-fuel mixture.)
A gasoline engine has a compression ratio of 4.00 and uses a gas for which y = 1.40. (a) What is the efficiency of the engine if it operates in an idealized Otto cycle? % (b) If the actual efficiency is 15.0%, what fraction of the fuel is wasted as a result of friction and energy losses by heat that could by avoided in a reversible engine? (Assume complete combustion of the air-fuel mixture.)
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Transcribed Image Text:A gasoline engine has a compression ratio of 4.00 and uses a gas for which y = 1.40.
(a) What is the efficiency of the engine if it operates in an idealized Otto cycle?
%
(b) If the actual efficiency is 15.0%, what fraction of the fuel is wasted as a result of friction and energy losses by heat that could by avoided in a reversible engine? (Assume complete
combustion of the air-fuel mixture.)
%
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