The primary limiting factor is emissions for road cars and 2-strokes. 2 strokes have to go oil-sump + direct injection with supercharger to be able to match a

The primary limiting factor is emissions for road cars and 2-strokes. 2 strokes have to go oil-sump + direct injection with supercharger to be able to match a 4 stroke when it comes to maintaining thermal efficiency, match power density while meeting emission standards. All that complexity and the 4 stroke atkinson's cycle looks really attractive again. A huge benefit in of the Atkinson's setup is it can switch back to the Otto seamlesssly and directly drive the car for additional power (i.e Hybrid vehciles) If you can parse through the noise of Quora posts, this highlights above[0]. Tesla won't use it gasoline for range extension - it's against their religion - which I subscribe to. [0] https://www.quora.com/Why-arent-2-stroke-engines-used-in-cars https://www.quora.com/Why-arent-2-stroke-engines-used-in-car...