Audi has upped the power on their 2015 R18 e-tron Quattro LMP1 WEC challenger. Their hybrid setup uses a 4.0 liter V6 engine that produces 558 horsepower in its own right. The engine is coupled to a nearly 272 horsepower electric power unit.
The power unit has been upgraded over last year, fitted with a new energy recovery system. The system allows the energy which would usually be lost during braking to be recovered. The system allows for a net 17% energy gain over the previous year’s system.
Audi’s new setup allows for the recovery of 4 megajoules of energy per lap, a gain of 2 megajoules over the previous year’s system.
However, the improvement of the energy system now requires the team to use less fuel for its internal combustion engine, as per regulations. The new energy system enables 2.5 percent less fuel to be used.
The R18 e-tron Quattro is currently the only car on the WEC field to not make use of a gasoline engine, using a diesel power-plant, featuring turbocharging and direct fuel injection.