TSI Engines.

With its TSI twinchargers, Volkswagen is the only car manufacturer in the world to offer an engine that combines petrol direct injection and twin-charging: a turbocharger is used together with a supercharger to generate boost pressure. The result is a specific power output of 90 kW (122 hp) per litre – a top figure among the four-cylinder engines in the car sector.

The supercharger and the turbocharger complement one another ideally in the way they operate. The supercharger compensates for the well-known turbo-lag, which otherwise occurs because the turbocharger does not build up pressure effectively until the engine is turning at medium revs.

The mechanical supercharger using the Roots principle is powered via a maintenance-free belt drive directly from the crankshaft. This means that boost pressure is available even at very low engine speeds. Thanks to the demand-regulated activation of the supercharger, the TSI twincharger engines deliver powerful torque and outstanding pulling power in all driving situations and in all engine speed ranges.