Audi announces new e-fuel project that produces diesel fuel from water, CO2 and green electricity

Article by Christian Andrei, on November 18, 2014

Audi and project partners Climeworks and sunfire have opened a pilot plant in Dresden that produces diesel fuel from water, carbon dioxide and green electricity. The project allows Audi, Climeworks and sunfire to show that industrialization of e fuels is possible.

The opening of the pilot plant was graced by Johanna Wanka, German Federal Minister for Education and Research; and Hagen Seifert, Head of Environmental Assessments, Renewable Energies and New Materials at Audi.

The sunfire plant operates according to the power-to-liquid principle and needs carbon dioxide, water and electricity as raw materials. Using the direct air capturing technology developed by Climeworks, the plant extracts carbon dioxide directly from the ambient air.

In another process, an electrolysis unit -- powered by green electricity -- splits water into hydrogen and oxygen. The hydrogen is then reacted with the carbon dioxide in two chemical processes conducted at 220 degrees Celsius and a pressure of 25 bar to produce an energetic liquid called Blue Crude.

The pilot plant in Dresden-Reick can produce around 160 liters of Blue Crude daily, almost 80 percent of which can be converted into synthetic diesel called Audi e-diesel that is free of sulfur and aromatics.

Since Audi e-diesel has high cetane content, it ignites very easily. Likewise, the e-diesel’s chemical properties enable blending in any ratio with fossil diesel. The project is funded partly by the German Federal Ministry for Education and Research with Audi being the exclusive partner in the auto industry. [source: Audi]

Topics: audi

If you liked the article, share on:


Login or Create new account to add a comment!


Starting early 2017, the new Audi Q7 will be available with the new 2.0-liter TFSI four-cylinder engine that makes it not only faster but also lighter and more efficient than...
by - October 25, 2016
Soon, Fiat Chrysler’s Dodge brand will be ending the production of the Dodge Viper. So practically, the 2017 Dodge Viper will be the last Viper up for grabs. Gerry Wood...
by - October 25, 2016
Say hello to the fastest accelerating production car in the world: the new 2017 Tesla Model S P100D. Powered by a 100 kWh battery, this new model basically outruns almost...
by - October 25, 2016
Ever heard of the “Lynk & Co” automotive brand? Well, it is highly likely people haven’t. This is practically because this is new brand created by the joint venture between...
by - October 25, 2016
Mitsubishi is now officially part of the Renault-Nissan alliance after Nissan took over the Japanese car company recently. We know a lot has been happening in the car industry, but...
by - October 24, 2016