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A 200 kW Caterpillar diesel generator set in a sound attenuated enclosure used as an emergency backup at a sewage treatment substation in Atlanta, United States. A diesel generator (DG) (also known as a diesel GenSet) is the combination of a diesel engine with an electric generator (often an alternator) to generate electrical energy. [1]
Currently, many TE10 locomotives remain in service in Russia, Ukraine, Belarus, Latvia, and Kazakhstan. However, they are often re-engined with more modern and fuel-efficient 4-stroke engines during rebuilding programs. 13D100 variant was used as a generating set in diesel-electric Dobrynya Nikitich-class icebreakers and their derivatives.
[9] [10] This is the reason most ATEG development has been focused on gasoline engines. [6] [11] [12] However, there exist several ATEG designs for light-duty [13] and heavy-duty [14] [15] diesel engines. By converting the lost heat into electricity, ATEGs decrease fuel consumption by reducing the electric generator load on the engine.
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]
The most powerful low-speed engine ever produced by Wärtsilä, a 14-cylinder version of the RT-flex96C, produces 80,080 kW (107,390 hp) and is used to propel the Mærsk E-class container ships. Wärtsilä admitted to manipulating fuel consumption tests after an internal audit in 2016, saying that a few hundred engines had been affected.
The most efficient reciprocating steam engine design (per stage) was the uniflow engine, but by the time it appeared steam was being displaced by diesel engines, which were even more efficient and had the advantages of requiring less labor (for coal handling and oiling), being a more dense fuel, and displaced less cargo.
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