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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 ...
Twin-turbo is a type of turbo layout in which two turbochargers are used to compress the intake fuel/air mixture (or intake air, in the case of a direct-injection engine). The most common layout features two identical or mirrored turbochargers in parallel, each processing half of a V engine 's produced exhaust through independent piping.
Using a turbocharger spool valve to increase exhaust gas flow speed to the (twin-scroll) turbine; Using a butterfly valve to force exhaust gas through a smaller passage in the turbo inlet; Electric turbochargers [51] and hybrid turbochargers. A similar phenomenon that is often mistaken for turbo lag is the boost threshold. This is where the ...
Below this rpm, both exhaust and air inlet of the secondary turbo are closed. Being individually smaller they have reduced lag [16] and having the second turbo operating at a higher rpm range allows it to get to full rotational speed before it is required. Such combinations are referred to as a sequential twin-turbo. Sequential twin-turbo ...
The BMW N63 is a twin-turbocharged petrol V8 engine which has been in production from 2008 to present. The N63 is the world's first production car engine to use a "hot-vee" layout, with the turbochargers located inside the "V" of the engine.
The recall partly contributed to a charge of US$300 million by Ford. ... Introduced with the 2015 Ford F-150 is a twin-turbo 2.7 L V6 EcoBoost engine. It delivers ...
The VR is a series of twin-turbo DOHC V6 automobile engines from Nissan with displacements of 3.0, 3.5, and 3.8 L. An evolution of the widely successful VQ series , it also draws on developments from the VRH , JGTC , and Nissan R390 GT1 Le Mans racing engines.
3.0 TFSI: twin-scroll single-turbo charged 2.9 TFSI: twin-turbo charged fuel system common rail Fuel Stratified Injection (FSI) high-pressure direct injection DIN-rated motive power & torque outputs, ID codes 3.0 TFSI variants 243 kW (330 PS; 326 bhp) at 5,400–6,400 rpm; 450 N⋅m (332 lbf⋅ft) at 1,340–4,900 rpm - unknown/Porsche variant