Following its TDI and FSI engines, Volkswagen is launching TSI petrol technology, which uses direct injection plus dual-charging through a combination of an engine-driven supercharger and an exhaust gas turbocharger arranged in series.
VW says the driving characteristics of the new TSI engine are improved over those of the current FSI unit, with no turbo lag and high maximum torque. The belt-driven supercharger operates at lower engine speeds, with the turbocharger coming in as the engine speed increases.
The new TSI engine has a capacity of 1.4 litres (1,390 cc) and produces either 140 or 170 PS. The 170 PS version has the same peak power as a conventional 2.3-litre petrol unit but with 20% lower fuel consumption, returning 38.2 mpg on the combined cycle. It produces torque of 177 lbs ft (240 Nm) from 1,750 through to 4,500 rpm.
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