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Downsized 4.0 TFSI for Audi S8 cuts fuel consumption 23% compared to predecessor; cylinder deactivation and start-stop

Green Car Congress

OCTOBER 11, 2011

Audi’s principle of downsizing: “ Forced induction replaces displacement ” One twin-scroll turbocharger per cylinder bank compresses the fresh air. Technologies such as plate honing are used during assembly of the V8 at the Audi plant in Györ, Hungary. The piston pins have a fine, diamond-like carbon (DLC) coating.

Audi 199
Audi Downsizing Fuel Engine 199
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Opel presents new 1.0 SIDI Turbo engine at Aachen Colloquium; below 100 gCO2/km and ~59 mpg in the Adam

Green Car Congress

OCTOBER 8, 2013

liter class which are engineered to meet customer demand for strong, downsized engine performance. The cylinder head features a water-cooled exhaust manifold integrated within the aluminum casting. Water-cooling of the exhaust reduces temperatures for improved emissions control, while also reducing heat build-up around the turbine.

Engine 220
Engine MPG Exhaust Gasoline 220
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