These figures are perplexing
Already seen in motorsports (including the Lancia rally Volumex), the combination of a compressor and a turbocharger makes its debut today on a large model series, shortly before being extrapolated into several levels power (and capacity) to achieve a complete family in the VW range. After the monograms TDI and FSI, we will see soon a generalization of the TSI acronym? The purpose of the concept, it is true, is tempting: to offer the power of a 2.0 TDI block 170 (the other engine of the Golf GT) on a 1.4 to block direct injection develops 90 hp at the base! The while remaining below the consumption of a 2.0 FSI petrol 150 hp. Fluet but bold, 4-cylinder that allows the tune Golf is the power of 121 hp per liter, when a Ferrari Enzo just 110 hp / liter. Better yet, the qualities of each of the two modes boost parent and add their respective deficiencies.
Two complementary technologies
Thus the compressor operates only from the lowest speeds and up to 2400 rpm when the turbo is still no interest.Next comes a transitional phase of 2 400 to 3 400 rpm for the turbo which he is present before it takes over, alone, above 3500 rpm. The choice of the German mark was made on a conventional turbocharger and a compressor-driven belt. Type “Roots” (2-lobed rotors), it accepts a max speed of 16,300 rpm, 5 times faster than the crankshaft! It is powered by an electromagnetic clutch integrated into a module housed in the water pump. May redeem up to 21.7 bar pressure, engine block to the original aluminum had to be performed by highly resistant cast iron.
Punch to resell
Team to start the finishers Golf GT Twincharger technology will soon be available from other on the Golf Plus and Touran. On the compact Wolfsburg, the small 1.4 TSI grandstanding and not far off in terms of approval of the version 2.0 Turbo GTI. It shows full at all speeds and with good reason, it has 240 Nm of torque available from 1 750 to 4500 rpm. Performance-wise, the Golf “crush” model 2.0 FSI 150 hp more than a second to 0 to 100 km / h (prepared in 7.9 s), and only makes 7 / 10 of a second at the same frangine GTI exercise. Repeats are also strong (80 to 120 km / h in 8s) and flexibility in appointments, it is indeed surprising how easily the engine is expressed, even on the 6th report and at low revs. If the announced consumption amounted to 5.9 l/100 km in the extra urban cycle and 7.2 in the mixed course, our average in our test than the 9 liters (8 liters target should be possible, however) on a course combining sporty driving (a little) and highway (much) however the person back to reality.
The Golf GT TSI appears from 25 500 euros when the GTI variant claimed 27,410 euros. If it does not revolutionize the segment of compact 170-hp (a Renault Megane 2.0T 165 hp Luxe Privilege coin is 23 400 euros), it combines all the same friendly feelings and relatively low consumption in rewarding VW image Pioneer always good to take.
Bertrand Debeuret
02
Dec
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