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A diesel generator (DG) (also known as a diesel GenSet) is the combination of a diesel engine with an electric generator ... (ca. 30% fuel efficiency ratio). [6] [7]
Diesel fuel cost $11.61 but produced 133.13 train miles per ton. In effect, diesels ran six times as far as steamers utilizing fuel that cost only twice as much. This was due to the much better thermal efficiency of diesel engines compared to steam.
The fuel efficiency of diesel engines is better than most other types of combustion engines, [145] [146] due to their high compression ratio, high air–fuel equivalence ratio (λ), [147] and the lack of intake air restrictions (i.e. throttle valves). Theoretically, the highest possible efficiency for a diesel engine is 75%. [148]
In regions where the frequency is 60 Hz such as in North America, generators rotate at 1,800 rpm or another divisor of 3600. Diesel engine–generator sets operated at their peak efficiency point can produce between 3 and 4 kilowatt hours of electrical energy for each liter of diesel fuel consumed, with lower efficiency at partial loads.
Fuel consumption is a more accurate measure of a vehicle's performance because it is a linear relationship while fuel economy leads to distortions in efficiency improvements. [2] Weight-specific efficiency (efficiency per unit weight) may be stated for freight , and passenger-specific efficiency (vehicle efficiency per passenger) for passenger ...
The prototype TOG1 and TOG2 super heavy tanks of the Second World War used twin generators driven by V12 diesel engines. [citation needed] More recent prototypes include the SEP modular armoured vehicle and T95e. Future tanks may use diesel–electric drives to improve fuel efficiency while reducing the size, weight and noise of the power plant ...
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