The supercharging system in the next generation of Audi passenger and performance cars will come from the Eaton Corporation. Installed on the German automaker’s 3.0-liter TFSI V6, the supercharger is from Eaton’s Twin Vortices Series (TVS) and will help the direct-injection engine make 290 horsepower while returning 24mpg on average, according to Eaton execs.
The Eaton TVS features the company’s newest Roots-type positive displacement design, with two four-lobe rotors that are twisted at 160 degrees. The original Eaton supercharger design used three lobes twisted at 60 degrees. The new design is more efficient in getting air into the redesigned air inlets and outlets, while reducing noise and vibration; two things a luxury automaker like Audi is highly interested in. The design also makes it compact, making packaging tight and allowing it to fit in-between the banks of the V6 engine.
In the A6, the blower will be tuned to deliver 11.6psi of boost, with the engine rated at 290hp. In the S4, output is believed to be in the 330hp range, while the RS4 would make more than 400 horsepower. Like car platforms, automakers are increasingly using engines that can be used in a wide variety of vehicles. Nissan’s VQ V6 engine series is a prime example, as is Audi’s own 2.0-liter TFSI inline-four.
Eaton also supplies a version of its TVS blower for the new, $100,000, 628hp Corvette ZR-1 and the 2009 Cadillac CTS-V. The supercharger made its production car debut last year in Australia, under the hood of the TRD Aurion. It was first seen on North American soil at the annual SEMA aftermarket parts show bolted on a Roush Mustang.
07/17, 1:37 PM
posted by:
xyunya
Blow me!
07/17, 1:40 PM
posted by:
928dreamer
I would think that with 11 pounds of boost on a 3 liter FSI that this would produce more power. A lot of 3.5 liter NA cars are putting down 300 HP. It must be a pretty conservative tune to try to maximize fuel efficiency. Even so, I would hope for better numbers.
I do love the new twin screw blowers though. Supercharger design has become much more efficient. I think we will see a lot more force fed cars by manufacturers in the near future.
07/17, 1:42 PM
posted by:
Need4SSpeed
Yeah I got a Eaton M62 Supercharger on my ride…
I’m very surprised about this news though… I wonder why Audi is going S/C rather then the traditional bi-turbos???
I thought a bi-turbo would have way more potential then a roots type S/C…
07/17, 2:34 PM
posted by:
928dreamer
Been thinking about adding this
https://www.928gt.com/default1.htm
to my ride. Very nice system. It is amazing the amount of power that can reliably be added to a well tuned engine. Stock is plenty fast, but increase it to more than 500 RWHP and it is just insane.
07/17, 2:48 PM
posted by:
RaineMan
The TVS blower is an awe inspiring piece of work. I know a few guys who have ditched the M62 in favor of a TVS of the same size and are reporting hp & tq gains, lower IATs, & better fuel mileage on less boost than before the swap.
07/17, 6:46 PM
posted by:
Need4SSpeed
^ Really? They are dropping the M62’s out of the LSJ, with this? Well they are both roots type so I guess so… That much of an improvement eh?
07/17, 7:32 PM
posted by:
terminator
Oh great, Audi gets a new efficient blower from Eaton but us Cobra guys got stuck with the old Heatons.
Nice!
07/17, 10:11 PM
posted by:
A4
audi always has a very conservative boost tune, the 2.7 twin turbo ran in the 250hp range and a simple chip sends it to 318hp and 382 lbft. thats an insane jump for a simple ecu remapping. I wish audi would have gone back to turbos.
07/17, 10:40 PM
posted by:
RaineMan
Yep Need4SSpeed… the M62 from the LSJ pulls right off with a few bolts… and the austrailian company Harrop has a TVS blower that swaps right in… just retune and you are good to go. The TVS flows so much better and so much cooler than the old “heaton” that you get gains even if you drop the boost. Swap to a smaller pulley and add more fuel for even more fun.
07/18, 1:43 AM
posted by:
Jon
It would be interesting to know why Audi did not go with a true twin-screw unit… especially for a more premium car like the S4.
07/18, 9:37 AM
posted by:
928dreamer
Maybe I am confused, but this is a twin screw blower.
07/18, 1:57 PM
posted by:
Jon
^^ No… I believe that from an engineering standpoint this has a Roots-type foundation which makes it less efficient (but cheaper)than a true compressor-type twin-screw design.
07/18, 2:00 PM
posted by:
Jon
And by efficiency, I mean in terms of power generation, not necessarily for fuel-consumption. Most high-end applications of the twin-screw compressors will have a magnetic clutch to save fuel however.