Lustrous and substantial trucks offered increased fuel efficiency over analogous sized petrol powered engines. In 2011, diesel fuel engines get been improved to submission cleaner burning fuels and increased exhaust technology to felicitous emissions standards regulated by the Environmental Safeguard Agency.
Efficiency
The U.S. Authority's comparison of diesel and petrol fueled engines shows an increased fuel efficiency in diesel of between Thirty and Thirty five percent. In cut, this has been fabricated doable by fuel technology, such as ultra low sulphur and biodiesel.
Energy
Diesel fuel truck engines use a direct fuel injection system, which also increases mpg's over gasoline engines. As fuel is passed directly into the cylinder in diesel systems, the engine has less wasted and unburned fuel in its system compared to gasoline engines, meaning increased mpg's.
Diesel fuel burns to conceive added heat, environing 147,000 British thermal Units (BTUs) of energy per gallon compared to 125,000 BTUs per gallon for gasoline fuels. Less diesel fuel is needed to arrive operating temperatures than gasoline, resulting in increased miles per gallon of fuel.