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A mechanically driven supercharger offers exceptional response and low-rpm performance, as it does not rely on pressurization of the exhaust manifold (assuming that it is a positive-displacement design, such as a Roots-type or twin-screw, as opposed to a centrifugal supercharger, which does not provide substantial boost in the lower rpm range), but is less efficient than a turbocharger due to ...
Lightning Bolt, Don Vesco's streamliner, set record in 1978 that stood 12 years; twin turbo (2×inline-four engines) [39] BUB Seven streamliner, set speed records in 2006 and 2009; 500 hp (370 kW) turbo V-4 engine; Ack Attack, has held speed record since 2013; more than 900 hp (670 kW) twin turbo (2×inline-four engines)
A "twingle" is a four-stroke twin-cylinder engine with an altered firing order designed to give power pulses similar to a single-cylinder four-stroke engine. Inline twins with a 360° crankpin offset or flat-twins can be easily converted into twingles by firing both of the cylinders at the same time and installing a camshaft or camshafts that ...
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By the mid-1980s, turbocharged engines dominated Formula One, until they were banned after the 1988 season. Turbochargers returned to Formula One for the 2014 season, with turbocharged 1.6 L (98 cu in) V6 engines replacing the naturally aspirated 2.4 L (146 cu in) V8 engines that were previously used. The turbocharging combined with more ...
That first engine was a single cylinder model, based on the French developed De Dion-Bouton internal combustion engine. The company was soon fully committed to producing its own proprietary engine designs, and by 1909 the first Harley-Davidson V-Twin engine had been designed and made, setting a template for engine design that continues today.
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Paddles require a relatively high axle, that often also forms the crankshaft. For stability the main weight of the engine, i.e. its cylinder, is mounted low down. Later engines drove single screw propellers. These now required a low-mounted drive, but still benefited from the stability effect of a low-set engine.