One of the big engineering challenges was to make a Mild Hybrid
system that you could use with every drivetrain at Audi.
My name is Oguz Eksi and I am responsible for the 48 Volt Mild Hybrid Systems.
We assist the engine every time we have enough energy in our battery.
We have three main parts in the car. They are battery starter generator, our
AC/DC converter, and the 48 volt battery that is only the size of a shoebox.
With the 48 Volt electrical system we have four times more
power then with the 12 Volt electrical system.
This energy we can use for different drive states
We tried to make a very convenient Start/Stop system
with a better starter generator
The system is very powerful, and makes
every start very smooth, comfortable and very fast.
One of the reasons why we are very convenient
at the starting moments with the battery start alternator
is because we're permanently linked with the
belt between the battery starter generator and the engine.
And we crank it on without the mechanical voices of the pinion starter.
At the assist phases we use the energy to support the IC engine.
With the Mild Hybrid System we can shut down the engine at every speed.
It's a speed range between 55 km/h and 160 km/h will shut down the engine
every time the customer takes off his foot from the execelerator.
The next step is we make it high performance
recuperation with up to 12 kilowatts
That means that we use the kinetic energy of the car to
make electricity and use it for the next assist functions
or for the Start/Stop phase that begin with 22km/h
One of the benefits of the 48 Volt electrical system
is that we use it for new technologists.
We have a top down strategy with the Mild Hybrid system.
The Audi A8 is the first one to get the 48 Volt Mild system in the car and we
will roll out the technology in every new Audi in the future.
