Audi Pioneers Electric Turbo Technology - Engine Builder Magazine

Audi Pioneers Electric Turbo Technology

audi-tdiNow there is a solution to dreaded lag which accompanies turbochargers at low rpm, and it’s one you’d be surprised hasn’t been tried earlier.

The primary hurdle when it comes to turbocharging over supercharging has been the lag encountered at lower engine outputs. One solution to this has been to use a twin turbo setup, with a smaller  compressor to be run at lower rpm and a larger one to augment when output is higher. Even this isn’t a perfect model, however, and while more and more manufacturers across the industry are adopting turbos, a number have abstained, citing performance concerns, notably Jaguar.

Audi seeks to rectify this with an electric turbocharger setup. This design will use an electric motor to drive the turbo at lower rpm, until engine output is sufficient to drive the turbo by exhaust gases. Now, instead of waiting for the exhaust gases to reach a suitable level, power is available almost instantaneously. In Audi’s design, the electrified turbo, which would be the smaller of the two in a twin turbo layout, would draw power from energy gained by regenerative braking(KERS) systems, so that no engine power is used to spin it. We don’t have any information about what kind of a battery pack will be employed to store this energy, however. The concept could also be used in conjunction with hybrid car technology, as energy could be diverted from the primary battery packs to spin the electric compressor.

The incredible potential of this technology is obvious. Reducing the lag inherent to turbocharging would aid in acceleration, as well as cornering, when rpm levels drop significantly due to braking. Audi reports significant improvements in both of these categories. Audi’s design may even overpower superchargers at lower outputs, as since electricity is already on hand, delivery could be near instantaneous. The technology still has yet to be explored in depth, and it hasn’t been applied to any production vehicle yet; it has been used in certain racing series for quite some time, however. Audi says that the technology will appear on its RS-5 concept(pictured above,) which employs Audi’s 3.0 liter TDI engine.

Courtesy of Speedville.com.

You May Also Like

Diesel Fuel Pump Technology

Companies in the diesel fuel pump space are looking to keep pushing the envelope by focusing on increasing flow and pressure capabilities, durability, and functionality.

Exergy diesel fuel pump

It’s no secret that diesel engines are making more power and more torque than ever before. In order to keep up with those performance gains, the appropriate amount of fuel has to be present as well. Fortunately, the aftermarket has come to the rescue.

Companies in the diesel fuel pump space are looking to keep pushing the envelope themselves by focusing on increasing flow and pressure capabilities, durability, and functionality. Here’s what manufacturers of diesel fuel pumps had to say about the latest pump technology.

Fuel Additives Address Diesel Deficiencies

Advancements in diesel fuel additives continue to play a pivotal role in improving the performance and efficiency of diesel engines.

diesel fuel additives
Shop Solutions May 2024

Those who submit Shop Solutions that are published are awarded a prepaid $100 Visa gift card. Submit your Shop Solution at [email protected].

Shop Solutions April 2024

Shop Solutions provide machine shop owners and engine technicians the opportunity to share their knowledge to benefit the entire industry and their own shops.

A Different Dyno Design

The dyno is a valuable tool, so it’s nice when an engine builder feels confident in the setup of it. Enter the shipping container engine dyno design.

Other Posts

Thermo-Tec Rogue Series Turbo Covers

The dual-layer construction increases performance and durability while controlling temperatures.

turbo cover
Properties of Pistons

Pistons are perhaps one of the more sophisticated chunks of metal in the picture. Here’s what you should know.

A New Take on the Rotary Engine

What if we could design a new rotary engine that addresses certain limitations without violating the laws of physics? This is what LiquidPiston has been working at for over a decade.

Perfecting Ring Seal Soup

Using modern honing machines, surface finishes, crosshatch angles, ring materials, and coatings all combine to create a more efficient engine.