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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

The cylinder case is made from an aluminum-silicon alloy using a low-pressure chill casting process that achieves a high standard of homogeneity, according to Audi. Audi’s principle of downsizing: “ Forced induction replaces displacement ” One twin-scroll turbocharger per cylinder bank compresses the fresh air.

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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

Peak torque of 166 N·m (122 lb-ft) is available across a wide plateau from 1,800 rpm to 4,700 rpm, while maximum power is delivered at 5,200 rpm. liter class which are engineered to meet customer demand for strong, downsized engine performance. SIDI Turbo generates 30% more torque than Opel’s current 1.6-liter, liter engine.

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