Environment

Alternative Fuels & Power Systems

We strongly believe that we must develop alternatives to petroleum-based fuels that still work with the traditional combustion engine. In 2012, we announced partnerships with Solazyme and Amyris, two of the world’s leaders in renewable fuels, to evaluate emissions reductions and demonstrate the performance of TDI Clean Diesel technology when powered by advanced biodiesel and renewable diesel fuel.

Amyris converts plant-sourced sugars into renewable hydrocarbons for fuel and chemical applications; Solazyme has developed a technology that harnesses the oil-producing ability of microalgae to develop renewable oil products. Working together, our goal is to advance research on renewable diesel solutions for current and next-generation TDI Clean Diesel applications.

CO2-neutral mobility depends on the development of sustainable forms of energy that can replace for fossil fuels. Audi AG is working with Joule to develop technology that uses energy from the sun to convert CO2 and non-potable water into liquid fuel. This technology is at the core of Audi’s e-diesel and e-ethanol projects. Audi AG and Joule have built a demonstration facility in New Mexico for these projects.

For Audi e-diesel, our teams are working to create a sustainable diesel fuel that is free of sulfur and aromatics, and will work seamlessly with existing Audi TDI Clean Diesel systems. With the Audi e-ethanol project, we are developing a product with the same chemical properties as bioethanol but without the use of biomass. This will be blended with fossil-fuel gasoline at up to 85 percent for vehicles that can use E85 fuel.

TFSI® Engine Technology: The Balance of Power and Fuel Efficiency

Audi is the first manufacturer in the world to develop Turbocharged Fuel Stratified Injection (TFSI) technology. TFSI combines direct injection with forced induction supercharging or turbocharging. This provides higher power output with greater fuel efficiency and reduced emissions.