Mercedes-AMG's M139 Is the World's Most Powerful Four-Cylinder Engine

[pierrre]

The head looks like it's just normal sparkplug and direct injection.
https://www.autocar.co.uk/sites/autocar ... k=YTactWlQ

Wonder when TJI will feature on production car engines??

interesting you mention this, im compiling a video on the m139 and point this same thing out

[pierrre]

ok, video completed and here it is

[PVDL]

Actually I see some innovation in the chamber area

1 There appears to be no traditional squish area
2 The spark plug is protruding quite a lot
3 The whole chamber seems to be somewhat recessed