GM Patents High Compression, Supercharged, Engine With Electric Turbochargers

After eighteen months in review by the United States Patent and Trademark Office, documents published on October 24, 2017, reveal GM has been granted a patent for an internal combustion engine with elevated compression ratio and multi-stage boosting.

The document describes a propulsion system made up of a high compression internal combustion engine which uses a low-flow supercharger in combination with a high-flow turbocharger, linked to “one or more electric motor/generators, none of which are shown”.

TomM - 12/14/2017 5:48:59 PM

+1 Boost

THere is still life in ICE engines as Mazda and Chevy show!

MDarringer - 12/14/2017 6:30:36 PM

+1 Boost

Except that for Mazda ICE development is NOT resulting in increasing Mazda's volume.

CANADIANCOMMENTS - 12/14/2017 6:26:30 PM

+2 Boost

Indeed. This sounds like the crazy engine in current Volvo products. Electric turbos are used in racing applications I think, but not 100% sure.

PUGPROUD - 12/15/2017 3:02:29 PM

+1 Boost

Similar to Volvo but different. Volvo supercharger kicks out at 3500 rpm then one exhaust driven turbo kicks in. Corvette's twin turbos are electrically driven not exhaust driven allowing freer flowing exhaust gases and more power.