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Pilot plant in Dresden, Germany, delivers first consignment of high quality Audi e-diesel using CO2 from biogas and ambient air

• New synthetic fuel could make a significant contribution to climate protection 
• No need for mineral oil: e-diesel made from water, CO2 and green power
• Synthetic petrol (Audi e-gasoline) also in development

Ingolstadt/Berlin, April 22, 2015 – Audi has taken another big step in the development of new, CO2-neutral fuels: A pilot plant in Dresden, Germany, has started production of the synthetic fuel Audi e-d iesel.

After a commissioning phase of just four months, the research facility in Dresden started producing its first batches of high-quality diesel fuel a few days ago. The energy technology corporation sunfire is Audi’s project partner and the plant operator. It operates according to the power-to-liquid (PtL) principle and uses green power to produce a liquid fuel. The only raw materials needed are water and carbon dioxide. The CO2 used is currently supplied by a biogas facility. In addition, initially a portion of the CO2 needed is extracted from the ambient air by means of direct air capturing, a technology of Audi’s Zurich-based partner Climeworks.

Reiner Mangold, Head of Sustainable Product Development at Audi, sees Audi e-diesel and Audi e-fuels in general as an important component that complements electric mobility: “In developing Audi e-diesel we are promoting another fuel based on CO2 that will allow long-distance mobility with virtually no impact on the climate. Using CO2 as a raw material represents an opportunity not just for the automotive industry in Germany, but also to transfer the principle to other sectors and countries.”

Production of Audi e-diesel involves various steps: First, water heated up to form steam is broken down into hydrogen and oxygen by means of high-temperature electrolysis. This process, involving a temperature in excess of 800 degrees Celsius, is more efficient than conventional techniques because of heat recovery, for example. Another special feature of high-temperature electrolysis is that it can be used dynamically, to stabilise the grid when production of green power peaks.

In two further steps, the hydrogen reacts with the CO2 in synthesis reactors, again under pressure and at high temperature. The reaction product is a liquid made from long-chain hydrocarbon compounds, known as blue crude. The efficiency of the overall process – from renewable power to liquid hydrocarbon – is very high at around 70 percent. Similarly to a fossil crude oil, blue crude can be refined to yield the end product Audi e-diesel. This synthetic fuel is free from sulphur and aromatic hydrocarbons, and its high cetane number means it is readily ignitable. As lab tests conducted at Audi have shown, it is suitable for admixing with fossil diesel or, prospectively, for use as a fuel in its own right.

Construction work on the facility in Dresden-Reick kicked off in July 2013 and the plant was commissioned on November 14, 2014. The plant is set to produce over 3,000 litres of Audi e-diesel over the coming months. Audi is sunfire’s exclusive partner in the automotive sector.

Over and above the partnership with sunfire, Audi has been active in the development of CO2-neutral fuels – Audi e-fuels – since 2009. The Audi e-gas plant in Werlte, Lower Saxony, already produces Audi e-gas (synthetic methane) in a comparable manner to power the Audi A3 Sportback g-tron*, which is available in countries in which a suitable fuelling infrastructure exists. Audi is also conducting joint research into the synthetic manufacture of Audi e-gasoline with Global Bioenergies, of France. In a further project, Audi has joined forces with the U.S. company Joule, which uses microorganisms to produce the synthetic fuels Audi e-diesel and Audi e-ethanol.

Article source: www.audi.co.uk

The gearshift indicator tells the driver when it is the ideal time to change gear.

The gearshift indicator installed in many Audi models makes sure you are always running the engine at the optimum revs. A signal on the driver information system shows when it's advisable to change gear. 

Changing to the most suitable gear has been proven to save fuel. The driver benefits from an advanced level of driving technology – and visible efficiency.

Article source: www.audi.co.uk

All-new seven-seat luxury SUV with exceptional specification becomes available to order next month

• All-new Q7 priced from £50,340 OTR to £53,835 OTR – ordering opens in April, first customer deliveries begin in August
• Available at launch with 272 PS V6 TDI engine
• 218 PS 3.0 TDI quattro expected to open for ordering in late summer 2015
• Comprehensive standard specification includes MMI Navigation Plus with MMI Touch, Audi connect (3 month trial), Audi drive select, keyless go, parking system plus, powered tailgate
• S line versions fitted with all-weather LED headlights, 20-inch alloy wheels, privacy glass, four-zone climate control and S line styling enhancements

Developed from the ground up, the all-new R8 Coupé marks the second generation of our acclaimed high performance supercar. Embodying racing passion and energy, it brings breath-taking power and outstanding performance to the road.

The all-new Audi R8 will be available in two versions: the V10 and the V10 Plus, and will be available to order in May. Prices for the V10 start at £119,300 and £137,500 for the V10 Plus.

Article source: www.audi.co.uk