This is the new electric turbo with double turbocharger that Porsche has patented

This is the new electric turbo that Porsche has patented, a double turbocharger technology that promises less lag and greater efficiency.

Electric turbochargers are a significantly recent invention that, while not quite up to par yet in terms of performance, continue to evolve in pursuit of excellence. An example of this is the new electric turbo that Porsche has patented, a technology that promises less lag and higher efficiency.

Actually, Porsche has not yet patented it, but has applied for the patent as they report from Carbuzz. This system is inspired by a traditional configuration of twin turbocharger, in which two smaller units are used for faster response, especially at low revs.

This is the new electric turbo that Porsche has patented

In the concept of the German firm, two small exhaust turbines are used that operate by themselves, no mechanical connection to a compressor. Instead, small, sensitive turbines power generators. Then use a single large inlet compressor, driven by an electric motor.

The design also features a discharge valve which allows gases to be released past the exhaust turbines when power is not needed, allowing for greater efficiency when cruising.

This technology makes it possible to separate the speed of rotation of the compressor from that of the turbines themselves. This means there is boost pressure from turbo to any RPM whenever there is electrical energy available that would be stored in a kind of battery, eliminating the problem of the so-called turbo lag.

The Porsche design allows the use of a large compressor with a higher flow rate for a higher efficiency without the usual penalty of slower response. Typically, large turbochargers are slower as they have larger turbines that need more airflow to accelerate, meaning there is no ‘kick’ up the revs.

There are several electric turbo designs that have been made to date. The technology has been used in Formula 1 and has also started to trickle down to various road-going supercars. Even electric superchargers are a reality, like the one under the hood of the Mercedes-AMG E53.

This article was published in Autobild by Aarón Pérez.