Nerd’s Eye View: LA Auto Show 2014: Part 2 – Race Cars and Engines


Triple fuel pumps make sure there’s no fuel starvation.
The rear anti-roll bar uses a blade-type adjuster.
A big oil cooler is mounted on the passenger side. If you look back at the first picture, you can see a fan mounted on the other side of the cooler to create airflow through it.
Everyone better start getting used to seeing power plants like this fuel cell system from Hyundai. The main large rectangular box in the middle is the fuel cell stack. Automotive fuel cell systems tend to use PEM (Proton Exchange Membrane) fuel cell systems which generally operate around 80 deg C. You put in hydrogen on one side, oxygen from the ambient air on the other, and you get electricity and water. On the top right side of the fuel cell stack, you can see a black plastic air box similar to a standard internal combustion engine which then leads to a centrifugal blower at the bottom right to provide the air (i.e. oxygen) to the stack.
Hyundai chose to package the fuel cell stack above the electric motor. Big wires come out of the high voltage junction box sitting on the very top of everything and go to the left into the motor controller unit. From there, wires lead the electrical current over to the right to the motor sitting at the bottom of everything.
Here is a side view of the power and drive unit which gives us a better look at the black plastic air box and motor controller unit. You can also see three smaller electrical cables going down into the centrifugal blower which gets air from the air box and pumps the air into the stack.

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