A post in another forum brought me to wanting to ask the Tech guru's in here about the desing of the top of the pistons in the Mercedes Diesel engines. Esp. the DI's of the recent past and up to what is in production today.

Im wondering which (if any) have a design on the top of the piston made for enhancing the automization of the fuel... via a cup or some other form of indentation or pocket on the top of the piston. This seems to be the design in the VW diesels and the Ford powerstroke diesels.

Also if anyone knows..... which of any of MBZ (or any other diesel engine for that mater) engines have injectors aimed with the intent of keeping fuel from contactiing the cylinder walls. (As I understand it; this is the VW design being used in VW diesels.)