Q: “Most of your compressors require several kilowatts of electrical power. Very few alternators can deliver the current required and most batteries would only last a few seconds supplying such a large load.”
A: “You’re right, current 12V architecture wouldn’t handle more than around 250 amps when fully charged and in good condition. That’s about 3kW if we ignore losses.It is commonly accepted that the global need to reduce emissions will require a greater degree of powertrain electrification and our market research shows that 48V architecture is the most cost-effective solution for the objective of achieving the EU 2020 emissions targets. This results in the available electrical power increasing to about 10kW. This will also reduce the current flows by a factor of 4 and the loss due to the power flow through the system by a factor of 16.Also it is important to remember the rated full load power is different from the mean power. In this application full power is only drawn for a fraction of a second. For example, Aeristech’s 48v 10kW eSupercharger system, recently demonstrated on a Mahle downsized engine, drew a max power of 7kW and a mean power of 4.5kW.
Fully Electric Turbocharger Technology is a different proposition with a compressor motor up to 3 times more powerful than that driving the eSupercharger. The design also incorporates a turbo-generator harvesting waste energy from the vehicle exhaust. It is worth noting that there is sufficient waste energy available to supply all the vehicles needs and it is expected that in the long term the generator will become redundant.
Q: “A mechanical drive between a compressor and turbine is almost 100% efficient. Won’t the lower efficiency of the electrical components negate the performance benefits?”
In short, whilst the device itself certainly has a lower efficiency than conventional turbocharger solutions, the overall vehicle efficiency is improved in comparison owing to the unique performance capabilities of FETT.”
Q: “Won’t a conventional Sequential Turbo or a Twin Charger achieve the same thing?”
Q: Aeristech claim that their technology is uniquely qualified to power an air supply compressor for a fuel cell. What can you do that other systems can’t?
If you have something to add to the FAQ page or you are part of an organisation with a potential application for our technology, we encourage you to get in contact. For the Aeristech contacts page click this link.