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The combined cycle gas turbine (Brayton and Rankine cycle) is a combustion engine that is more efficient than a diesel engine, but due to its mass and dimensions, is unsuitable for many vehicles, including watercraft and some aircraft. The world's largest diesel engines put in service are 14-cylinder, two-stroke marine diesel engines; they ...
Modern turbo-diesel engines use electronically controlled common-rail fuel injection to increase efficiency. With the help of geometrically variable turbo-charging system (albeit more maintenance) this also increases the engines' torque at low engine speeds (1,200–1,800 rpm). Low speed diesel engines like the MAN S80ME-C7 have achieved an ...
(This is given by the change in Gibbs free energy, and is around 45.7 MJ/kg for gasoline.) The actual amount of mechanical work obtained from fuel (the inverse of the specific fuel consumption) depends on the engine. A figure of 17.6 MJ/kg is possible with a gasoline engine, and 19.1 MJ/kg for a diesel engine.
Diesel engines have the lowest specific fuel consumption of any large internal combustion engine employing a single cycle, 0.26 lb/hp·h (0.16 kg/kWh) for very large marine engines (combined cycle power plants are more efficient, but employ two engines rather than one).
“Diesel trucks cost more to begin with and retain their value better than gas engine trucks, because they’re more durable and statistically can reach higher mileage,” said Melanie Musson, an ...
For a turbo diesel too low a gear will move the engine into a high-rpm, low-torque region in which the efficiency drops off rapidly, and thus best efficiency is achieved near the higher gear. [17] In a gasoline engine, efficiency typically drops off more rapidly than in a diesel because of throttling losses. [18]
Ram 1500. In addition to the F-150, Edmunds listed the Ram 1500 as a top pick if you’re looking for a large truck. According to Edmunds, “The powerful turbocharged six-cylinder engine gives ...
With today's inflated car prices, Americans are more apt to hold on to their cars longer and even drive them into the ground if necessary. Find More: 6 SUVs That Last Longer Than You Think and Are...