Audi’s turbodiesel electric flywheel hybrid allwheel drive prototype race car

6 Июн 2014 | Author: | Комментарии к записи Audi’s turbodiesel electric flywheel hybrid allwheel drive prototype race car отключены
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Audi’s turbodiesel, electric hybrid, all-wheel drive race car

Audi’s new R18 e-tron demonstrates the extraordinary boldness of the company in actually risking substantial (damaging it’s heritage) to demonstrate new capabilities harnessing the combination of electric and horsepower to gain a demonstrable advantage

Audi has disclosed of the details of its forthcoming R18 e-tron revealing a turbodiesel, electric hybrid, all-wheel drive and ensuring that the 2012 Le 24 Hour Race will be a of the hybrids.

Though Audi’s rival Peugeot will not the race, Toyota is entering two race cars in the prototype as will Audi, and with plans for hybrid and electric road vehicles, the battle for the of the world’s fastest racing is now on.

And as an added side-show, two TDI Audi R18 will contest the event the cars are identical to their brethren apart from the system itself — so really be able to see how much a hybrid makes to performance, as a four-wheel drive vehicle should offer much roadholding when it rains.

impeccable record

Audi wins Le Mans — 10 of the 12 races have gone to the marque with the 2003 win to so close on the Volkswagen family to the Audi marque for it to have something of a moral victory for The marque’s IP/DNA was used in the Bentley car and even regular were co-opted into the indicating the priorities of the Volkswagen at that time.

Even stalwart Tom Kristensen who had just the record for consecutive victories at Le with three straight in an Audi from 2000-2002, was into the Bentley in 2003 for his consecutive win, then he a further two wins in 2004 and in the Audi R8.

So apart from the Peugeot 908 HDi FAP win in 2009, the last an unrelated marque greeted the flag first at La Sarthe on the big day was the BMW V12 LMR in

That’s quite some considering that 24 hour are so incredibly unforgiving — the problem can turn a team race-winning speed into Toyota’s last tilt at in the what many claim is the most important race saw it a very fast and very car which lives in legend the 1999 3.6L Turbo V8 GT-One — but it didn’t win and is all that counts to the manufacturers.

The world is facing what Head of Motorsport Dr. Wolfgang terms the electrification of the drive. a century of petroleum-based motoring, the will be forced to be more in its energy usage, and electricity almost certainly power, partially of fully, the automobiles of the future.

It’s an issue in which our from production are also absorbed. In this respect a new era has in started, says Ulrich.

figures for pure electric suggest that the hybrid and TDI are more accepted by the public at point in time, so winning the most important race a hybrid would be invaluable to the of both companies. Only one of however, can win.

The relentless of motorsport progress

Compounding issues even further for new in recent years is the ongoing of the Le Mans 24 Hour from a trial, which it was when it into a 24 hour sprint, it has been for the last few years.

The image shows how speeds risen in the race since it was won in 1923 at an average speed than most legal limits. When average reached more than 200 (125 mph) in the mid-sixties, the began a series of course and engine restrictions designed to the race down. Though straights now often have speed chicanes in them, year, the best minds in conspire to continue to progress these restrictions.

The reliability of the is now so good, and they can run so hard for 24 that simply maintaining for a few hours is no longer a viable for serious contenders — if not running flat out, going backwards.

While the speed of the event may not show improvement in the last forty the speeds through the corners are now fast, and average speeds only been held with capacity and induction and continued remodeling of the faster of the circuit .

Just the same, the 5.5 liter 700 bhp Audi R10 TDi was clocked at 329 (204 mph) during the race, and at 339 km/h (211 in 2007, both on the Mulsanne

In 2010, with more restrictions and lower turbo a direct development of the same car ran a 4838.30 km at an average speed of 225 — with a 3.7 liter V6.

The Challenge

In 2012, Audi face a new rival — the kid on the block — Toyota. will run a petrol electric HYBRID powered by a normally-aspirated cc V8 petrol engine and a supercapacitor storage system developed by

Conventional batteries can’t and discharge energy fast for a race car, and Toyota and will be running the two main for hybrid race car energy — the Williams Hybrid electric flywheel system and Toyota is obviously developing in the very important area of supercabatteries, bacitors or Asymmetric Layer Capacitors (ADLCs) a coming industry that seem to have established nomenclature just yet.

Audi’s WHP magnetically loaded flywheel (MLC)

Audi’s energy storage system has a that goes directly to the original KERS introduction in F1. The R18 will use a magnetically loaded flywheel (MLC) originally for F1 by Williams Hybrid Power. has subsequently been used in Porsche’s GT3 R hybrid in 2010 and

Williams F1’s original in Williams Hybrid Power back to March 2008 the company bought the minority in Automotive Hybrid Power re-named to WHP), a Norfolk-based of composite flywheels, when energy recovery systems were being introduced Formula One.

Williams F1 increased its shareholding to 78% on the back of very favourable results on the and ever growing confidence the company’s MLC technology will wide application in hybrid vehicles, buses, electric diesel-electric ships and wind generation.

The original 2010-model 911 GT3 R used two electric front-wheel-drive developing 60 kW (82 hp) each, which the 480 bhp four-litre flat-six engine at the of the 911 GT3 R. The car held the lead in the Nürburgring 24 race, for more than hours before problems to the hybrid system saw it relegated the field.

For 2011, the organizer of the 24 Hour race thought the potential of the hybrid vehicle was so that it crippled the rear-mounted engine’s performance to just 448 So Porsche built a completely new to the same design around the new lowered the weight, upped the drive to the front wheels to 200 bhp and set out to run the lap times. It hit the lead of the event at the hour mark but a series of problems saw it finish down the

From 2010 to 2011, the Hybrid Power system 20% in size and weight. The Audi looks to have gone on an more radical diet, we have no specific details.

The kinetic energy is recovered on the axle under braking. The is fed as electricity into a flywheel before being retrieved acceleration again above a of 120 km/h.

When overtaking or out of a corner, the driver can manually the controls by pressing the boost on the steering wheel and sending from the charged flywheel to the front axle. This power of 120 kilowatts is available to the after each charge for approximately six to eight seconds.

A of the WHP system fitted to the R18 e-tron provided at the press release a quite different solution has created for the new car.

The system will provide 150 kW of at a top rotor speed of 45,000 The main benefits of the WHP system in to batteries, ultra-capacitors or mechanical are a high power density and low mass, high efficiency transfer to and from the e-storage, the to continuously deep power and an insusceptibility to performance or life over a wide range of temperatures.

In short, the technology is suited to the high performance of endurance racing.

Remarkably for late stage of the proceedings, is still evaluating whether the (Toyota Hybrid System Racing) will use a front system from Aisin or a motor system from We suspect the DENSO system be ahead politically, but I cannot see missing the obvious opportunity same that Audi has in the development of four wheel race and road cars.

back in 2007, the Toyota HV-R Hybrid which won the major race for a hybrid electric power on all four The 1,080-kg Supra used an storage system and captured from all four wheels rapid deceleration, and returned it acceleration. The system used 10 kW motors in the front wheels in to one 150 kW rear-axle mounted electric giving the car 700 horsepower in total, 473 bhp coming from the 4,480-cc and a further 227 bhp from the electric

The drivetrain was so impressive that it was Race Engine of The Year by the editors of Race Engine magazine.

The potential of hybrid

The importance in understanding the enormous of hybrid power is to appreciate the difference between an electric and an internal combustion engine.

An motor is far more of a precision than an internal combustion — it can be switched on and off in microseconds and can calculate and deliver the exact of power to the steering wheels, to get a car a corner on the limits of adhesion.

in my humble opinion, two wheel motorcycles will also be and safer, but for four wheels, it absolute sense that going to get more power on the using four contact instead of two.

Audi’s race history, mainly its of WRC during the early eighties, has proven that four-wheel-drive brilliantly with mechanical In the public’s view, Audi’s famous driver was probably Mouton, who took four WRC and finished runner-up in the drivers’ championship in 1982 — doubt the closest yet that a has come to winning a sport associated with the male of the Audi’s WRC quattro won the WRC in 1983 Hannu Mikkola and 1984 Stig Blomqvist.

The second coming of the quattro so much more — technology will be replaced by a with a precision, independent output to each front We are entering an entirely new era of four-wheel-drive, cars will go around faster than you thought thanks to the additional power, and balance achievable by using powered wheels instead of

Audi and Toyota will the initial battle of the hybrids and I it almost unthinkable that could go in any direction with power other than the front wheels and hence an obvious competitive advantage in the of 4WD if it succeeds. By comparison, adding all the horsepower to the rear wheels of little incremental value, no potential upside other more power.

The Toyota is nonetheless very serious. the car is being built in Germany by Motorsport GmbH in the former F1 race headquarters near the circuit, the engine will be supplied directly from the We suspect it will be a good as were the engines it supplied to Racing team for its Lola car in 2011.

But with the basic technology for the TS030 not yet chosen, hard to see Toyota being to rumble competitively when we see the side-by-side at the Spa Francorchamps 24 Hour on May 4.

Audi noted during its conference that the e-tron project started in February — two years ago. It that the 18 months that between the initial conceptual and the first shake-down test was a short cycle for a technology has never been tested in and which still doesn’t exist in production, stresses Dr. Mühlmeier, Head of Technology at Sport.

The challenge is correspondingly

Toyota is eight weeks its first competitive outing and we don’t know the drive — we hope they do.

two by two car strategy

In a strategy probably well before Peugeot the endurance scene in January, has boldly decided to split its In many ways it’s a of a team on top of its game.

It has taken the car won last year, and refined it in respect, taking proven architecture and making each incrementally lighter, stronger, durable — from the fiber composite monocoques are significantly lighter than year’s cars, through to the TDI Both cars from will feature carbon gearbox housings this with Audi building its TDI race car yet.

Not a single one of race motors has suffered a in the Le Mans 24 hour race before the start of the R10 era. will field two such cars with conventional trains and when the clock toward the 24 hour mark at La this year, we can reasonably at least one of them to be in contention for the

After winning Le Mans of the last six time with diesel power, Audi is on the TDI engine. The TDI was invented by Audi, Dr. Ulrich, and is still the most drive in the world.

We’ve proved this at Le Mans 2006. It’s not a coincidence turbo diesel engines are there for six years now, though the diesel cars repeatedly limited. We are convinced the TDI has even more potential.

is why Audi not only supports the in motorsport and production, but in parallel the further development of the conventional The combination of TDI and hybrid is, however, doubt particularly interesting and promising.

The insurance policy of a bet each way is not new to Audi, which split its initial 1999 Le challenge with two different types using the same and twin-turbo 4.0 liter V8, albeit Two open cockpit Audi finished third and fourth, the enclosed R8C models finished

Ironically, the race was Audi’s foray into the sport and the cars finished behind relative newcomer — the 3.6L Turbo V8 Toyota Audi went on to learn the while Toyota retired, and 24 months later, Audi had enough to dominate the sport no other marque in history. Now is returning, though not perhaps the it was in 1998-99. Toyota has been on bleeding-edge hybrid motorsport for a time.

As far back as 2007, Motorsport won the Tokachi 24 Hour in Japan with a Toyota HV-R Hybrid.

Hence decided to build two cars on proven technology to ensure should something go wrong the two radical Quattro race Though the original cars no doubt designed to combat the turbo diesel challenge failed by mere seconds to Audi last year), it now ensure that the hybrid from its own team and that of will need to prove advantage over TDI if they are to for the win. Motorsport provides an hypercritical review of new technologies and the 24 of Le Mans is the harshest critic of

When Peugeot left the Toyota’s job got both easier and Peugeot’s absence will it easier to get to the front, but Audi’s with two sets of cars different characteristics and only one competitor should make its job in managing to have one of its cars in the at the 24 hour mark.

Turbodiesel hybrids make a lot of — the excellent power and low emissions of a turbo diesel it ahead of a petrol engine for road use (turbo or otherwise), and the power and remarkable economy from a turbo diesel on the has translated into a winning six from six at Le Mans.

Audi’s of drivetrain layout is interesting in to its cousin, Porsche which the system in the last two years.

was very forthcoming with of the Williams Hybrid Electric system it used in its GT3 car, and that Porsche and Audi are closely related (Volkswagen 100% of Audi and 49.9% of the Audi set-up could have looked a lot like the hybrid V2.0’s config, yet it

Four driving wheels logically go around a corner than two driving wheels and by the electrical power from two front motors to drive the wheels, it has given itself the to dial in the exact amount of at each wheel at every in time. Electric motors are far to control than petrol and with the advanced sensors and now available, this exercise yet give hybrid technology a advantage at the racetrack.

Audi has consciously selected championships and in racing that have a relationship to production and therefore technical relevance for the Audi said Ulrich.

quattro, and TDI are three excellent examples of how has stimulated production development. A tendency is apparent with the quattro: we test a completely new on the race track before introduced to the Audi production

The Schedule

Audi Sport Joest will run the two R18 e-tron and two R18 ultra prototypes which debut at Spa-Francorchamps (Belgium) on May 5 in for the Le Mans race in June, Audi plans to enter one R18 quattro and one R18 ultra in the FIA World Championship (WEC) with Lotterer and Allan McNish as two of the drivers so far. The opening of the World Championship in Sebring on March 17 will see Audi three of last-year’s R18 TDI driven by Fässler/André Lotterer/Benoît Tréluyer, Capello/Tom Kristensen/Allan McNish and Bernhard/Romain Dumas/Loïc Duval.


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