Adopting additional, high-voltage circuitry is also claimed to permit weight saving within the vehicle wiring harness. Electrical power is generated by a new alternator that operates as part of a mild hybrid drive system. Conventional alternators can deliver up to three kilowatts but the new type is said to generate 10 kilowatts. When the engine isn't running, a lithium-ion battery acts as the energy source and a DC/DC converter integrates the 12-volt electrics. Audi claims that the new electrical system cuts fuel use by 0.4 litres per 100km and saves 10g/km in CO2 emissions on the concept - in conjunction with a system to shut down the diesel engine when it is not needed.
Anything else?
Audi has plans for other systems to take advantage of the 48-volt system. Future applications include dynamic chassis control and new convenience systems. A scalable platform concept for the technology has been created by the group's developers and more applications will be announced soon.
If there is anything about this story we have not covered, you can avail of our expert advice service via the Ask Us Anything page.