Question 16.1: Fuel consumption in a truck Let’s begin with an efficiency a...
Fuel consumption in a truck
Let’s begin with an efficiency analysis of a gasoline engine. The engine in a large truck takes in 2500 J of heat and delivers 500 J of mechanical work per cycle. The heat is obtained by burning gasoline with heat of combustion L_c = 5.0 \times 10^4 J/g. (a) What is the thermal efficiency of this engine? (b) How much heat is discarded in each cycle? (c) How much gasoline is burned during each cycle? (d) If the engine goes through 100 cycles per second, what is its power output in watts? In horsepower? (e) How much gasoline is burned per second? Per hour?
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