مهندسی مکانیک | خودرو
On average, 1 gallon (3.8 L) of diesel fuel contains approximately 155x10 6 joules (147,000 BTU), while 1 gallon of gasoline contains 132x10 6 joules (125,000 BTU). This, combined with the improved efficiency of diesel engines, explains why diesel engines get better mileage than equivalent gasoline engines.
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