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Labeled TSI, the technology essentially combined both a supercharger and a turbocharger along with direct fuel injection on a single engine to boost performance throughout the rev-range.
Volkswagen was able to extract up to 170 horsepower and 177 pound-feet of torque from a 1.4-liter four-cylinder engine using the twincharger setup, which understandably saw it win several international engine of the year titles.
Now it seems that Volkswagen is abandoning the design, with insiders revealing that the addition of both a supercharger and a turbocharger on such a tiny engine was deemed too complex and expensive to produce.
Instead, Volkswagen will rely solely on turbocharging to produce similar results from its future engines but on a significantly lower cost scale. In fact, shortly after the debut of the twincharger 1.4-liter TSI engine, Volkswagen launched several other TSI branded engines fitted only with turbochargers.
[Autocar]
