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What is a premium experience like in a self-driving car? Audi is researching this in collaboration with the Fraunhofer Institute for Industrial Engineering IAO. In the futuristic driving simulator, the experts on human-machine interaction investigated, for example, how the car interior can become a perfect workplace. The findings help the car maker to provide every user with a personally optimized automobile interior in the future. This research cooperation is part of the Audi project “25th Hour.”

Audi represents Vorsprung durch Technik. That means thinking today about the future of mobility. But it’s not just a question of design or performance – it’s also a question of how to power our cars to get from A to B. And from today to tomorrow.


We are pushing forward innovations in this area: not simply by building efficient engines, but also by developing alternative drive and mobility concepts. By also seeking inspiration from nature for new sources of power that allow us to travel new paths. An innovative contribution to this goal is made by our Audi g-tron models – in combination with Audi e-gas. One example is the Audi A5 Sportback g-tron1: 80% less CO2/km with Audi e-gas technology purely in gas mode (CNG) on a well-to-wheel assessment (a calculation of emissions that includes both the production of fuel and the running of a vehicle) compared with the Audi A5 Sportback 2.0 TFSI2with 140 kW. As a g-tron customer, you can refuel as usual at any CNG filling station. AUDI AG ensures that the total amount of gas consumed by the vehicle, calculated on the basis of legal standards for measuring fuel consumption and emissions as per NEDC/WLTP and statistical data on the annual mileage of Audi g-tron models that were ordered during the period 7 March 2017 to 31 May 2018 is replaced by Audi e-gas – for a period of three years after first registration as a new vehicle (the amount of CO2 saved is also calculated on this basis and may be lower in actual practice when running the vehicle). The Audi e-gas is fed into the European natural gas network, replacing fossil natural gas.


Another step towards our vision of premium carbon-neutral mobility.

With the Audi g-tron models and Audi e-gas as fuel from our own production sites and from partner facilities, the approach we are taking for our drive solutions isn’t just a matter of efficient engines, but also of the ecology of the entire energy system. A matter of enabling mobility that’s innovative before the vehicle has even driven a single metre. That’s the idea behind “Vorsprung starts before you drive”. And behind the combination of Audi g-tron and Audi e-gas. Find out more about our holistic drive concept here.

Audi e-gas is a fuel that we developed in our own production facilities. It is made using renewable energy sources, water, CO2 and waste materials. Various processes are used to extract CO2 from the atmosphere, which is then converted into Audi e-gas by biomethane and power-to-gas plants. The power-to-gas plants split water into hydrogen and oxygen exclusively using renewable energy. The oxygen is released into the air and the hydrogen reacts with CO2from the biomethane plant to form methane: our Audi e-gas. The biomethane plants demonstrably only use waste materials in which CO2 is also bound. This gives Audi e-gas an important advantage: the exact overall amount of CO2 that is emitted by the vehicle according to standard consumption is bound in the fuel. The additional CO2 emissions generated by the construction of the fuel plants, transport and compression of the fuel at filling stations are included, so that on an overall assessment CO2 emissions can be reduced by 80%3. That means we don’t just focus on efficient fuel consumption, but also on the production of the fuel itself.


Back in 2013, Audi commissioned the world’s first industrial-scale power-to-gas plant: the Audi e-gas plant in Werlte. For the first time, large quantities of fluctuating energy generated from wind and solar power could be stored in the natural gas grid on a long-term basis. Very effective, because the expansion of fluctuating energy sources like wind means that it’s increasingly common for excess power to be generated. The power-to-gas process makes use of this excess power as fuel for mobility, which is why we believe the Audi e-gas project can be a crucial element and driver of energy transition.


Alongside this solution for the g-tron fleet, we are also working to develop other synthetic liquid fuels that could have a potential to reduce CO2 that is similar to Audi e-gas. We call them Audi e-fuels. One example is Audi e-benzin, which is currently under development – and is already being tested in our Audi models.

Article source: www.audi.com

 

One of Audi’s goals is to increase the efficiency of its vehicles without compromising on traction and driving dynamics. Engineers are therefore looking for savings potential in all technology areas. They found what they were looking for with the quattro permanent all-wheel drive.

Longitudinally mounted engine at the front, transversely mounted engine at the front, mid-engine at the rear – the Audi models adopt very different drive concepts and provide the right quattro drive for each model. For the very latest mid-sized model lines with longitudinally mounted engine, quattro is now available with ultra technology. If the automobile is being driven at moderate speed and the all-wheel drive does not offer any advantage, the new system simply drives the front axle. If the quattro drive is then actually required, it is activated in two stages – as part of a predictive, responsive process.

Control of the new quattro drivetrain operates predictively. Networked throughout the vehicle, it acquires and evaluates data – in ten millisecond cycles – such as the steering angle, transverse and longitudinal acceleration and engine torque. From this data the control unit computes, for instance, the point at which the front tire on the inside of the curve will reach its grip limit during fast cornering; it computes this around one-half second in advance. If the wheel approaches the grip limit at a defined threshold value, the all-wheel drive system is activated.

The control unit’s decision on whether to predictively engage the all-wheel drive is primarily based on the driver’s style of driving, the status of the Electronic Stabilization Control (ESC) and the mode selected in the Audi drive select system. In the reactive engagement, the system reacts to sudden changes in road friction. These changes might occur, for example, when the wheels go from dry asphalt to a sheet of ice.

The quattro with ultra technology offers major benefits in terms of efficiency without seeming any different from permanent systems in terms of traction and driving dynamics. The key difference to competitor solutions relates to the concept of the two clutches in the drivetrain. In this way, Audi eliminates a large part of the additional fuel consumption which the quattro drive produces by its very nature. Despite the new, additional parts, the quattro with ultra technology is nearly four kilograms lighter than the previous system.

Article source: www.audi.com

Even more distinctive, sportier and faster: The new Audi Sport Performance Parts take dynamic handling to a wholly new level for the Audi R8 (combined fuel consumption in l/100 km: 12.3 – 11.4*; combined CO2 emissions in g/km: 287 – 272*) sports car and the Audi TT. The retrofit range will be available in dealers in late summer 2017 and features numerous components.

Range-wide adoption of 48-volt circuitry as a primary electrical system opens up multiple electrification possibilities for all-new A8 luxury saloon

  • Luxury saloon available for first time with standard electrified powertrain
  • 48-volt primary electrical system opens up fresh scope
  • Flagship model making world debut at the Audi Summit in Barcelona on July 11

The all-new Audi A8 range which makes its debut next month will be the first in the brand’s history to feature an electrified drivetrain as standard, representing another important milestone on the e-mobility pathway. The combustion engines powering the next generation of the flagship luxury saloon will be equipped with mild hybrid technology based around a 48-volt electrical system which features as the primary electrical system for the first time. The technology will work in favour of the running refinement and performance that are so crucial at this level, and also in the interest of greater efficiency.

The mild hybrid drive comprises two main components: first, the watercooled 48-volt belt alternator starter (BAS), which complements the conventional pinion starter. The latter is only required for cold starts in the new Audi A8. Then there is the lithium-ion battery in the luggage compartment to act as the energy accumulator for the MHEV (mild hybrid electric vehicle) with a 10 Ah charge carrier capacity and a 48-volt system.

The advantage of the BAS becomes particularly clear when the driver approaches a red traffic signal or a roundabout. If the traffic signal turns green during braking while the vehicle is coasting to a stop or if a gap appears for the driver to move into, and the driver releases the brake, the combustion engine is started immediately. The car accelerates without any delay. This is all thanks to the belt alternator starter, which is permanently connected to the combustion engine. The new drive combines efficiency with comfort in a very special way: The fourth-generation A8 can enter the noiseless coasting mode within the speed range of 34mph to 99mph, and can then coast with zero emissions for up to 40 seconds with the engine off altogether. As soon as the driver depresses the throttle pedal again, the BAS prompts a swift, very smooth restart. In addition, start/stop operation is actually active from 14mph.

The convenient start/stop function in the new Audi A8 differs markedly from previous systems. The high-connectivity luxury saloon can distinguish between different traffic situations. When the road ahead is clear, the BAS starts the combustion engine conveniently and promptly, letting the Audi A8 drive off swiftly. After long standstill phases and if the customer wants to turn up the air conditioning, the combustion engine is started extra-smoothly and quietly. There is the new feature of predictive convenient starting: As soon as the vehicle in front of the Audi A8 moves, the engine starts even if the brake is still pressed. In this scenario the control strategy concludes that the driver will fall in with the flow of traffic.

Recuperation in multiple scenarios

To achieve the high standard of efficiency, the new Audi A8 comes with sophisticated powertrain management: It processes both route data and information from its highly networked set of sensors, which include the front camera. The powertrain management uses this equipment to decide whether the A8 is in coasting or recuperation mode. It recovers energy not just from brake applications or when coasting; the Audi A8 also does so if it is in danger of getting too close to a preceding vehicle while coasting. All these measures are beneficial not just to comfort, but also at the fuel pumps: In the A8, the mild hybrid drive reduces fuel consumption during customer operation by up to 0.7 litres per 100 kilometres (62.1 miles).

The new Audi A8 makes its world debut at the first Audi Summit in Barcelona on July 11. Further information on powertrain development at Audi is available at www.audi-mediacenter.com/en/techday-combustion-engine-technology.

Article source: www.audi.co.uk