Turbochargers are a popular technology in the automotive world as of late. It allows rather low displacement engines to have relatively high power outputs, while also managing to return fairly good fuel consumption figures (on paper).

Despite the technology being decades old, some of its drawbacks could still be improved upon. One of these issues is the well-known problem of turbo size. A smaller turbine spools up quicky but runs out of steam at higher revs while a bigger turbine offers enough power at high revs but often is too slow at lower revs which results in turbo lag.

BMW has now patented its own idea on how to address these issues, and it involves the use of an often rumored “electric turbocharger”.

We reported before that BMW has … CONTINUED