Another Wörthersee show car, but this time with crazy turbocharging and orange detailing? Consider our interest piqued!
We’ve already mentioned Skoda’s concept efforts in advance of the annual Wörthersee festival which kicks off today, but Audi has gone decidedly all out with this mental TT clubsport turbo concept. However, there’s more than just mental bodywork – much of the technology featured is set to debut on production Audi models in the near future.
Most interesting is the use of an electric turbocharger, in addition to the regular turbo, attached to the 2.5-litre five-cylinder engine. Through using electric power to spin the compressor, boost can be generated almost immediately, eliminating the dreaded turbo-lag which is usually found on high output forced induction engines. At higher engine speeds, the conventional exhaust gas driven turbo is there to produce peak power, meaning this TT can have instant throttle response and a lot of power. A lot is 592bhp and 479lb-ft of torque to be precise! Good enough for 0-62mph in 3.6 seconds and a top speed of 192mph.
Solving the problem of eliminating turbo-lag whilst retaining big power is something the VW Group has battled with for a while. The 1.4TSI Twincharger engine, used in the previous generation Polo GTI amongst others, used a supercharger and turbocharger to try to overcome this challenge. However, the complexity of such a setup, and issues with reliability, hampered the success of that idea. Perhaps the e-turbo is the answer? Although the need for a 48-volt lithium-ion battery, housed in the boot, to power the e-turbo means there is some compromise. (more…)