Give me a second to get my head out of the bag. Some time ago was mentioned a lot of patents incorporated in tdi engine but originator not mentioned. Thought it might be co-op engineering as the tdi engine was quite a quantum leap ahead by volkswagen. Sure the injection pump was different but became history in 03 or 04 I believe. No injection pump at all now. Guess the proof will be the first time I get a look at some of the latest mercedes diesel engine manuals.