How fuel efficiency is expressed
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Fuel efficiency of motor vehicles. Thefuel efficiency of motor vehicles can be expressed in more ways: Fuel consumption is the amount of fuelused per unit distance; for example, litres per 100 kilometres (L/100 km).
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The efficiency of a fuel is judged by its calorific value. Calorific value is the amount of heat produced on complete combustion of 1kg of fuel . It is expressed as KJ/ Kg ( kilojoules per kilogram) .
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