20.3.2019. Ulrich Baretzky, head of development engine of Audi Motorsport, believes that the new four-cylinder turbo engines for the DTM is the right step.
Content
- Why does Audi motorsports with internal combustion engines?
- What is a “high efficiency Motor”?
- Two-liter, four-cylinder turbo engines, as they come from 2019 in the DTM, are currently considered as the most important internal combustion engines in the world. Why?
- Since when has Audi Motorsport with the DTM engine?
- So in the Rallycross world championship with a two-liter, four-cylinder Turbo. The engines are comparable?
- Audi in Motorsport, a lot of experience with turbo engines. The Ur-quattro in the world rally championship what is a Turbo. This Know-how is helpful?
- How intensive is the exchange between Motorsport and series, the Audi is traditionally very important is the new DTM Turbo?
- What are you thinking about specifically?
- The development of The new DTM engine ran smoothly?
- Why is the vote of a turbo engine is more complex than that of a naturally aspirated engine?
- For the first time in the DTM, is also a Push-to-Pass function. What is the impact this function had on the development?
- What should the driver look?
- Fans will be so fun?
- The new DTM engine has an Anti-Lag System (ALS). What is it?
Why does Audi motorsports with internal combustion engines?
The internal combustion engine still has a long future and complementing the electric mobility is very good. We deal with Audi has always been with high-efficiency motors last for years with the Diesel, with the petrol engine. There are still many opportunities for further development. So, in connection with alternative fuels can be an internal combustion engine is extremely environment friendly.
What is a “high efficiency Motor”?
It comes with a high compression ratio and very good effect of the Maximum degrees of performance from the available fuel out of them in the series as well as in Motorsport. In the DTM, the amount of fuel flowing to the engine is 95 kilograms per hour limited. That doesn’t sound like very much, in view of the power of 610 HP, but really a lot of. Increased vehicle performance can only be obtained via the way of efficiency. And the more efficient the engine is, the less fuel and therefore weight you have to lug around.
Two-liter, four-cylinder turbo engines, as they come from 2019 in the DTM, are currently considered as the most important internal combustion engines in the world. Why?
It’s about the total package, and the topic of weight: the weight of the generated consumption, and therefore it is necessary to save weight. In order to keep the engine small and powerful, the four cylinder, no way. He fits both the longitudinal as well as transverse in almost all popular models of Audi and Volkswagen group and is therefore widely used. It is the Central engine is a world engine.
The DTM is very long with a V8 naturally aspirated engines. The step to a four-cylinder Turbo what’s the right one?
The step what is long overdue. The first time we have made already more than ten years ago. At that time, the concept of the Global Race Engine. This four-cylinder Turbo in the world have been in many racing series can be used. This is in terms of performance, weight and dimensions of the new DTM engine.
Since when has Audi Motorsport with the DTM engine?
The first Considerations and a basic concept, there were in 2008. Intense, we are concerned with the Motor since December 2014. At the time, paved the way for a common future of the DTM and the Japanese Super GT.
So in the Rallycross world championship with a two-liter, four-cylinder Turbo. The engines are comparable?
No. The Rallycross engine is neither direct injection what is a pure-bred racing engine. He was absolutely based series with a limited mileage of 300 to 400 kilometres. The new DTM engine is a thoroughbred racing engine to hold up to the first Revision of over 6,000 kilometres – and then, ideally again as long.
Audi in Motorsport, a lot of experience with turbo engines. The Ur-quattro in the world rally championship what is a Turbo. This Know-how is helpful?
Of course every engine is different, and every rules has different challenges. But you can save a lot of error and one or the other loop, if you know the basic principle.
How intensive is the exchange between Motorsport and series, the Audi is traditionally very important is the new DTM Turbo?
Of course, the colleagues from the series have a few other requirements. But the issue of efficiency, therefore, plays a large role, as well as the weight. The DTM engine is 85 kilograms, significantly lighter than a standard engine. We can show you a few ways to find in the future, hopefully, the path to the road – like the first TFSI Le Mans and the TDI.
What are you thinking about specifically?
Weight and lightweight, just under the aspect of CO2-avoidance. And the topic of consumption. The DTM-the engine has an extremely low specific consumption, which is now in regions where they were previously typically found in diesel engines.
The development of The new DTM engine ran smoothly?
The four-cylinder engine, per se, is not a simple engine. He is very vibration intensive. You have to think of things that work in other engines for decades, in principle, easily, new. There were some worry lines, but we have to get with a lot of effort and work into the handle.
Why is the vote of a turbo engine is more complex than that of a naturally aspirated engine?
You have more control, for example, charging pressure, charge air temperature and adaptation to the environment. It is not difficult, but more time-consuming, the Maximum from the engine. The engine is so compacted to relatively high and therefore the knock-sensitive.
For the first time in the DTM, is also a Push-to-Pass function. What is the impact this function had on the development?
The engine was originally designed for a capacity of around 600 HP. Now 30 HP for a certain period of time. This increases the total workload is massive, even if it is only for a limited time.
What should the driver look?
The driver is interested in, per se, only of power and torque. The engine has plenty of it. You also immediately noticed that the turbo engine is a bit different to drive than a naturally aspirated engine and the car behaves due to the lower vehicle weight more agile. And the engine is very spontaneous, he turns quickly to 9,500 Rpm. I can well imagine that something like that is fun.
Fans will be so fun?
The Fans will enjoy, such as a four-cylinder can sound, and the eight-cylinder engines not to miss. The first Test in Estoril and I was impressed with how well and aggressively, the turbo engine sounds. This is an absolute spectacle.
The new DTM engine has an Anti-Lag System (ALS). What is it?
Eliminate AS helps the turbo lag. In the thrust phase, so if the driver is driving, for example, on a curve, and decelerates, the turbocharger artificially to speed. If the driver goes to the curve again on the Gas, he immediately load pressure.
Audi 2.0 TFSI DTM 2019 (photo: Audi Communications Motorsport / Christiane Reno)
