VW Reportedly Readying Petrol Engines with Much Improved Economy - more efficient than anything you can find commercially
It won’t be just one single innovation that will make this possible, but the added benefit of several, one of the main pieces of tech that will be used is “electro-mechanical assistance for forced induction. |
It uses an electric supercharger (or just plain compressor) to ensure there’s always pressure in the intake system so that the turbocharger is always spinning or just about to spin, thus reducing lag, boosting performance and efficiency all at the same time.
Another idea thrown around is “variable compression ratios.” This too is not very hard to understand, though it’s so far proved tricky for engineers to fine tune and make ready for large scale commercial applications.
On top of all of the above, VW also has advanced knowledge of cylinder deactivation, a system that is already present in several of their offerings. If they put all of this fuel-saving knowhow together, it does look to be close to reality. VW Reportedly Readying Petrol Engines with Much Improved Economy - Carscoops