Volkswagen Golf GT TSI

Car Technology

Recipe for fun: take a turbo and add a blower

Engines small in size is always a signature of Europe.But even there,an engine which develops 100 horse power with just 1 liter displacement is big deal.So you can imagine what is the case with a 1.4 liter engine which develops 168 hp & 240 Nm torque.Added to the fact that its mileage is about 100 km for every 7.2 liters.We are talking about the new Volkswagen Golf GT with TSI twin charger engine.Volkswagen’s goal is to reduce CO2 emissions while retaining the torque,power and the driving chara. in a variety of engines.The result was a 4 cylinder engine which can develop same torque which a 2.3 liter engine would produce by using 20% less fuel.Volkswagen’s engineers took a traditional approach to maximize the power output ;begin with a small displacement.They achieved the goal with a neat and unusual trick,using both a turbocharger and a supercharger at the same time.Now what the heck is a supercharger and turbocharger ??? Both are basically a pump which supplies pressurized air to engine cylinders which helps in burning more fuel efficiently producing more power.

Now the supercharger is an air pump which is driven by gears and powered from the crank shaft directly,while the turbocharger is driven with the force of the exhaust gases.Since the supercharger is driven directly by the engine,it can supply pressurized air even at low speeds.But the turbocharger needs some speed to reach its working condition.The time delay between a driver accelerating and the turbo boost coming from the engine on is called “turbo lag”.

Since in the Volkswagen Golf GT both turbocharger and supercharger are present,the supercharger will compensate for the turbo lag,which means increased power through out,no matter your speed is low or its high.The technology of Volkswagen Golf GT is very simple.Once the engine is at the necessary speed a bypass flap toggles the air supply to the turbo from the supercharger.This integration provides the engine with high torque from 1750 rpm to 4500rpm.Hats off to Volkswagen Golf GT for the wonderful integration

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