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  #11  
Παλιά 12-04-17, 09:01
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The new BMW M4 DTM in the wind tunnel.
The Aero Lab of the BMW Group is at the centre of aerodynamic development for the new BMW M4 DTM.



The adjustment of the aerodynamics to the requirements of the new DTM technical regulations played a decisive role in development of the 2017 BMW M4 DTM. The work carried out on the BMW M4 DTM in the wind tunnel prior to the start of the 2017 DTM season has changed considerably. Previously, the aerodynamics specialists had more time to carry out detailed work to ensure optimum aero efficiency when developing a new car. Now, a day in the state-of-the-art BMW Group Aero Lab is more akin to a day at the racetrack.

50 times 15: this was the formula used by the aerodynamics experts at BMW Motorsport when developing the new BMW M4 DTM ahead of the 2017 season. 50 days in the wind tunnel were permitted, with a maximum 15 hours per day. Not a minute more. In order to keep cost of developing the new DTM cars down, the German Motorsport Association (DMSB) worked with the manufacturers represented in the series to limit development time in wind tunnels. To take full advantage of the limited time allowed, the airflow specialists scrutinised their own processes and methods - with enormous success.

Race against the clock.
In modern motorsport, maximum efficiency is not only a key factor at race weekends, but also in the development process. Every minute counts. The planning of a wind tunnel session was completely adapted to the new regime for the BMW M4 DTM, and is similar to a test day at a racetrack. The engineers first define the initial configuration, then they set about creating a precise schedule for the subsequent tests. The focus was set primarily on the structure of the model car being tested in the wind tunnel. Compared with the development of the 2014 BMW M4 DTM, it is assembled in a more modular way to allow faster modification of the aerodynamic details. For example: the tests use a bonnet comprised of eight individual components that can be exchanged separately.

Precision is key.
Depending on the complexity of the parts to be switched, the aerodynamicists at BMW were able to test, on average, three car configurations per hour. The model was prepared, mounted on a hexapod and precisely positioned with maximum tolerances of a hundredth of a millimetre to allow the simulation of different driving situations, such as fast corners, tight hairpins and straights. While a 60 percent scale model of the BMW M4 DTM was still under construction, work was already underway analysing the data gathered. Ultimately, no further test time could be wasted on a configuration that had not previously achieved the desired result.

All these steps followed each other faster than before, but with no less accuracy. An old motor racing adage still rings true: every tenth of a millimetre counts in the wind tunnel. These can then be converted into tenths of a second out on the racetrack.

Time-lapse video: Wind tunnel work for the new BMW M4 DTM.
You can view our time-lapse video of the new BMW M4 DTM in the wind tunnel at the Aero Lab of the BMW Group here: https://youtu.be/42N1_9RuHsQ
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  #12  
Παλιά 20-04-17, 08:47
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  #13  
Παλιά 27-04-17, 12:39
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  #14  
Παλιά 28-04-17, 08:59
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More power for the engine in the new BMW M4 DTM: Facts on the 500-hp plus BMW P66/1.

More power for the engine in the new BMW M4 DTM: Facts on the 500-hp plus BMW P66/1.

27.04.2017 Press Release
Powerful and reliable: these two terms perfectly sum up the demands placed on the V8 engines in the DTM. The six BMW drivers have just one engine each for the entire season. With this in mind, the engineers and mechanics at BMW Motorsport gave top priority to absolute precision during the production phase. Here is the lowdown on the BMW DTM engine, the BMW P66/1.



Munich. Powerful and reliable: these two terms perfectly sum up the demands placed on the V8 engines in the DTM. The six BMW drivers have just one engine each for the entire season. With this in mind, the engineers and mechanics at BMW Motorsport gave top priority to absolute precision during the production phase. Here is the lowdown on the BMW DTM engine, the BMW P66/1.

In 2017, DTM regulations allow a larger diameter – 2 x 29 millimetres – for the air restrictors, through which the engine draws its combustion air. This results in an increase in engine power to over 500 hp.

The engine aspirates 260 litres per second – that is 2,000 times as much as a human breathes.

The pistons in the BMW P66/1 accelerate 600 times faster than a lunar rocket.

The pistons in the engine cover a combined distance that is the equivalent of travelling from Munich to Sydney over the course of a season.

In one season, 1.3 million ignition sparks are generated in one engine.

The water pump shifts about 19,000 litres per hour. At this rate, it would take just 20 seconds to fill a bath.

All the power generated by the engine is transferred to the powertrain and rear wheels through screws weighing just 130 grams.

The oil is pumped through the engine roughly 10,000 times in one season.

Over the course of the season, enough heat for 60 sauna sessions is removed via the oil.

920 technical drawings were created for the engine. Placed next to each other, this is enough to cover more than a full tennis court.
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Παλιά 28-04-17, 13:41
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  #16  
Παλιά 02-05-17, 09:52
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  #17  
Παλιά 04-05-17, 09:18
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New start in Hockenheim: The 2017 DTM season begins on familiar ground for BMW Motorsport.
02.05.2017 Press Release
When the sound of roaring engines rings around Hockenheim (GER) at the start of May, it means one thing to every motorsport fan: the DTM is back. The touring car series kicks off this weekend with the first two races of the 18 that make up the 2017 season. BMW Motorsport will send six newly-developed BMW M4 DTMs in search of more success in the DTM.




Munich. When the sound of roaring engines rings around Hockenheim (GER) at the start of May, it means one thing to every motorsport fan: the DTM is back. The touring car series kicks off this weekend with the first two races of the 18 that make up the 2017 season. BMW Motorsport will send six newly-developed BMW M4 DTMs in search of more success in the DTM. The squad of drivers is spearheaded by reigning champion Marco Wittmann (GER), who last year claimed the eighth title of a possible 15 for BMW since returning to the DTM in 2012. With new racing cars and a finely-honed format, the DTM once again promises to provide touring car racing of the highest quality in 2017.



The situation:

The two BMW Teams, RMG and RBM, and their six drivers have an intense period of preparation behind them. The BMW M4 DTM, which was developed by BMW Motorsport, has proven itself and shown its great potential during tests, including Timo Glock’s (GER) fastest time at the grand finale of the preparations in Hockenheim at the start of April. Despite this, the pack will be shuffled once again at the season-opener on the 4.574-kilometre track. Traditionally, the first qualifying sessions and race provide the first real opportunity to assess the genuine balance of power with completely new cars.



The changes:

The race cars are not the only things that are new for the 2017 DTM season. The same goes for many other areas. Softer tyres that degrade more quickly, a more efficient Drag Reduction System (DRS), and such details as a ban on heated tyre covers are among the innovations designed to ensure that greater emphasis is on the driver’s ability and that the fans are treated to even more action out on the track. As on the Sunday, Saturday’s race will now also feature a mandatory pit stop in 2017. Both races will last 55 minutes (+1 lap). Each of the three automobile manufacturers involved in the DTM will line up with six drivers.

Strict restrictions on radio communication between the team and drivers have also been enforced. The re-start in an Indianapolis-style, two-row grid formation after safety car phases also promises to add to the excitement. Use of the DRS system is limited to twelve laps (36 activations) in all races. Furthermore, points will be awarded to the top three positions in qualifying in 2017: the driver on pole position will receive three points, second place picks up two points, with one point going to the third-placed driver.

BMW Motorsport will send two works teams into battle, each with three drivers. Marco Wittmann is joined at BMW Team RMG by Augusto Farfus (BRA) and Timo Glock (GER). Bruno Spengler (CAN), Tom Blomqvist (GBR) and Maxime Martin (BEL) will have their sights set on top results for BMW Team RBM. Glock and Blomqvist’s cars will be run by combined crew consisting of RMG and RBM mechanics – BMW Team RMR.



The expectations:



BMW Motorsport Director Jens Marquardt: “I think we are about to witness one of the most exciting DTM seasons ever. In many regards, the series set the course for a successful future over the winter – whether with the development of the new cars, changes to the regulations and format, or bringing a new man in at the top, in the form of Gerhard Berger. As such, we are all really looking forward to the first showdown in Hockenheim. Everything we saw at the tests counts for nothing now. 18 of the top drivers in the world will go head to head in racing cars generating over 500 hp – and in front of what are probably the very best touring car crowds. We are well prepared with the new BMW M4 DTM. Bring on the first two races of the year.”



Stefan Reinhold (team principal, BMW Team RMG): “Our team has worked very hard indeed in the final weeks ahead of the season-opener. Following the final tests, we have prepared the three cars for our drivers and set them up as well as possible for the opening races in Hockenheim. We have also spent a lot of time practicing the new pit stop processes, which pose new challenges for our crews. We are delighted to welcome Augusto Farfus into the team as the third driver alongside Marco Wittmann and Timo Glock. He will be a great addition with his experience and speed.”



Marco Wittmann (#11, Red Bull BMW M4 DTM – 56 races, 8 wins, 15 podiums, 8 pole positions, 523 points, 2 Drivers’ titles): “It is obviously very nice to go into a DTM season as the defending champion for the second time in my career – not with the number 1 this time, but with the number 11. I hope that brings me more luck than last time. My memories of Hockenheim are very good. After all, I won the title in my last race there. That was a great weekend.”



Augusto Farfus (#15, Shell BMW M4 DTM – 66 races, 4 wins, 12 podiums, 5 pole positions, 345 points): “Pretty much everything is new to me at the start of this DTM season: the team, the car, the engineers, my team-mates, the rules. I have not experienced anything like this since 2012. However, I am really looking forward to this new challenge. All the manufacturers are basically starting from scratch this year. As such, I can imagine we may be in for a few surprises in the first few races.”



Timo Glock (#16, DEUTSCHE POST BMW M4 DTM – 56 races, 3 wins, 5 podiums, 1 pole position, 335 points): “We have an exciting season ahead of us, and are all really looking forward to it. I have a lot of positive associations with Hockenheim. I have had a lot of good and, above all, successful races there. My maiden DTM win in my debut season was obviously a bit special. That makes it all the better that we get to go there twice every year. The circuit is tailor-made for the DTM. I always have a good feeling when I come to Hockenheim. I can hardly wait for the race season to finally get started.”



Bart Mampaey (team principal, BMW Team RBM): “After a long and busy winter, we are delighted to be going racing again. In Bruno Spengler, we welcome a very experienced and quick driver to the team. He will form a very strong trio with Tom Blomqvist and Maxime Martin. I am particularly looking forward to seeing how the cooperation between our team and BMW Team RMG on the cars of Tom Blomqvist and Timo Glock will work out.”



Bruno Spengler (#7, BMW Bank BMW M4 DTM – 139 races, 14 wins, 45 podiums, 17 pole positions, 758 points, 1 Drivers’ title): “I have been made to feel very welcome in my new team, and am very much looking forward to driving for BMW Team RBM this year. A new team and a new car mean that this season is something of a new start, after last year did not work out so well for me. It is always rather special to go into a season with a new car. I am certainly very motivated to do well.”



Tom Blomqvist (#31, BMW Driving Experience M4 DTM – 36 races, 1 win, 5 podiums, 1 pole position, 172 points): “I really like the new design of my BMW Driving Experience M4 DTM. It looks fantastic and is hopefully very quick too. I am intrigued to see how good we are compared to the opposition. The biggest difference to last year will be the tyres, which will degrade faster. Let’s see who copes best with that at the first race weekend.”



Maxime Martin (#36, SAMSUNG BMW M4 DTM – 46 races, 2 wins, 6 podiums, 2 pole positions, 231 points): “I think the new regulations will make the start of the season extremely interesting. The cars have more power and are fantastic to drive. The new tyres make a huge difference and, in my opinion, will make for a lot of different race strategies. I am looking forward to an exciting weekend.”



The history:

In total, the Hockenheimring has hosted no fewer than 82 DTM races since 1984. BMW has 14 wins, nine pole positions and 38 podiums to its name. The last time a BMW driver climbed onto the top step of the podium was in 2014, when Marco Wittmann won the opening race of the season to claim the 60th BMW victory in the DTM. This was also his first win in the series. Come the end of the year, the BMW Team RMG driver was lifting the trophy as the champion driver.



The media schedule:



Thursday, 4th May

11:00-13:00, photo and interview session with Marco Wittmann and Augusto Farfus to mark the special “100 Years of BMW” exhibition at Technik Museum Speyer (Am Technik Museum 1, 67346 Speyer).



Friday, 5th May 2017

14:30-15:00, ITR Press Conference with Timo Glock, BW-Center



Saturday, 6th May 2017

16:45-16:55, mixed zone interviews with all BMW drivers, BW-Center



Sunday, 7th May 2017:

9:00-9:20, interview session with BMW Motorsport Director Jens Marquardt, BMW Motorsport Hospitality

17:25-17:35, mixed zone interviews with all BMW drivers, BW-Center



The service:

BMW Motorsport will offer an innovative Chatbot service for journalists for the first time in the 2017 DTM season. This allows users to receive the latest information directly to their smartphone via WhatsApp Messenger. The information available includes driver statistics, statements and photos. You can register for the BMW Motorsport Chatbot at the following link: http://bit.ly/BMW_Motorsport_Media_Broadcast_EN



The media guide:

You will find a pdf version of the 2017 BMW Motorsport Media Guide attached to this press release. You will also find a lot of useful information regarding BMW’s extensive racing programme in a compact format.
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  #18  
Παλιά 04-05-17, 09:22
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Παλιά 08-05-17, 09:06
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Παλιά 08-05-17, 09:47
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