Automobile efficiency and power plants: Putting it all together
Gas used in car’s engine During each cycle of an automobile’s gasoline engine operation, the gasoline burned provides 12,000 J of energy through heating to the engine and the engine does 3600 J of work. Gasoline provides 4.4 X 107 J of energy for each kilogram of gasoline burned. (a) Determine the efficiency of the engine. (b) Determine the thermal energy exhausted from the engine during each cycle. (c) Determine the mass of the gasoline burned during each cycle. (d) If the engine has 80 cycles/s, how much gasoline does the engine use in 1 h in kilograms and in gallons? The density of gasoline is 737 kg/m3.
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