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Ulrich Baretzky: “The fans will suffer conference a sound a four-cylinder engine can produce”

Why does Audi continue to pursue motorsport with inner explosion (IC) engines?
The IC engine still has a prolonged destiny and complements electric mobility unequivocally well. At Audi, we’ve always been operative on high-efficiency engines – many recently with diesel and now again with gasoline units. There’s still a lot of power for serve development. Also in multiple with choice fuels, an IC engine can be designed for intensely high eco-friendliness.

What is a clarification of a “high-efficiency engine”?
It’s formed on a element of extracting limit energy outlay from a accessible volume of fuel with high application and unequivocally good potency – in prolongation as good as in motorsport. In a DTM, a volume of fuel issuing to a engine is singular to 95 kilograms per hour. That might sound like a lot but, in perspective of some-more than 610 horsepower, it unequivocally isn’t. An boost in car opening can usually be achieved by efficiency. The some-more fit a engine is a reduction fuel and so weight has to be lugged around.

Two-liter four-cylinder turbo engines like those to be used in a DTM starting in 2019 are now regarded as a many critical IC engines worldwide. Why?
It’s about a sum package and a emanate of weight: Weight generates consumption, so weight has to be saved. To keep an engine tiny and powerful, there’s no proceed around a four-cylinder unit. Both longitudinal and cross forms fit with most all determined models of a Audi and Volkswagen Group and are therefore widely used. It is a executive engine – a universe engine.

The DTM raced with naturally aspirated V8 engines for a unequivocally prolonged time. Was switching to a four-cylinder turbo engine a right move?
This pierce was overdue. We started posterior this proceed as distant behind as 10 years ago. At that time, a judgment of a Global Race Engine was created. This four-cylinder turbo power-plant could have been fielded in many worldwide racing series. In terms of power, weight and dimensions, this is is a box with a new DTM engine as well.

Since when has Audi Motorsport been operative on a new DTM engine?
Initial considerations and a simple judgment date to 2008. Since Dec 2014, we’ve been posterior this engine plan with good intensity. At that time, a march was set for a corner destiny of a DTM and a Japanese Super GT.

A two-liter four-cylinder turbo was also used in a World Rallycross Championship. Are a engines comparable?
No. The rallycross engine was conjunction a direct-injection form nor a loyal competition engine. It was totally production-based with singular mileage of 300 to 400 kilometers. The new DTM engine is a loyal competition engine that’s designed to final for 6,000 kilometers before a initial reconstruct – and, ideally, for a same stretch again afterwards.

Audi has a lot of knowledge with turbo engines in motorsport. Even a strange quattro in a World Rally Championship was a turbo. Is this expertise helpful?
Naturally, each engine is opposite and each set of regulations poses opposite challenges. But we can gangling yourself a lot of mistakes and a few loops by meaningful a simple principle.

With a new DTM turbo, how complete is a sell between motorsport and prolongation that has traditionally been of good significance to Audi?
Obviously, a colleagues in prolongation have a few mandate that differ from ours. But potency also plays a vital partial there, only like weight does. With a weight of 85 kilograms a DTM engine is unequivocally light, a lot lighter than a prolongation engine. We’re indicating out a few approaches that will hopefully find their proceed into destiny road-going vehicles as good – like in a box of a initial TFSI for Le Mans and a TDI.

What, specifically, are we meditative about in this context?
Weight and lightweight design, generally in a context of avoiding CO2 emissions, and in terms of consumption. The specific expenditure of a DTM engine is intensely low and now within ranges that used to be standard for diesel engines.