300DTurbo

Can you help me out here by filling in the following WHO MAKES THE ENGINE AND WHERE?

Diesel Engine only:
'12 ML
'13 GL
'12 X5
'12 TOUREG
'13 CAYENNE

I get the feeling these are all the same "base" engines. Then the factory does a little tweak here or there and slaps their logo on it! Does the iron block come from the SAME factory somewhere in Germany? That has to be the case as they are all V6 diesels with +/- in specs. Also, all are GERMAN...

I'd like to believe I have an engine that is BENZ from the ground up?

YYZ-E55

Conspiracy!! I've got my tinfoil hat on in anticipation of the answer. Greg W to the rescue!!

batuceper

Not sure if this refers to the correct diesel engine, or how factual is the article:
http://en.wikipedia.org/wiki/Mercedes-Benz_OM642

venchka

Given the M-B/Nissan collaboration in the USA, maybe there is another answer. Rabbit ears on full extension for the answer.

Wayne

300DTurbo

anyone?

YYZ-E55

http://en.wikipedia.org/wiki/Mercedes-Benz_OM642

The Mercedes-Benz OM642 engine is a 3.0-liter, 72° 24-valve, aluminum block diesel V6 engine manufactured by the Mercedes-Benz division of Daimler AG as a replacement for the Mercedes-Benz inline-5 and -6 engines.[1]

The engine features common rail fuel injection and a variable nozzle turbocharger. The injection system operates at 1,600 bar (23,000 psi), while the compression ratio is 18:1.[1] The engine features a counter-rotating balance shaft mounted between the cylinder banks to cancel the vibrations inherent to the 72 degree V6 design, and the crankpins are offset by 48 degrees to achieve even 120 degree firing intervals. In some heavy vehicle applications, Mercedes' BlueTec AdBlue urea injection is utilised for NOx reduction.[2] In lighter vehicle applications, a NOx storage catalyst captures nitrous oxides, which are periodically purged (decomposed) by running the engine slightly rich. A particulate filter lowers soot, making this engine ULEV certified.[2][3] Engine mass is 208 kg (460 lb). Power output is 165 kW (224 PS; 221 hp) and 510 N·m (380 lb·ft) of torque.[1] For the 2012 model year, output on US mercedes diesel vehicles will be raised to 240 horsepower and 455 lb-ft of torque.

The engine is manufactured at the Daimler AG plant in Marienfelde, Berlin, Germany.[4]

venchka

The answer was at our fingertips the whole time.

Wayne

300DTurbo

'12 X5
'12 TOUREG
'13 CAYENNE

it is the same "base" aluminium diesel?

ALUMINIUM!! really?

batuceper

Bloody marvellous, I am speechless!

GregW / Oregon

AFAIK, each of the manufacturers you listed makes their own engines. The VW & Cayenne (and Q7), however, uses a version of the VW Group diesel. At this level there is nothing generic, even though the specs look similar. The MB block is linerless aluminum.

300DTurbo

thanks for the info.
liner-less? im guessing its damn well made?
the 300D has 295K miles with NO engine issues whatsoever. Iron block i believe?

can I expect that from this aluminum block?

GregW / Oregon

Lots of tech information here: https://mbworld.org/forums/new-m-cla...ml-diesel.html Can't answer you basic question, though. It will get out of its own way, though, unlike the 300D, with 2x the hp and 2.4x the torque of the old turbo.

Gunnar

was going to say God made it but sounds like the issue has been sorted out

300DTurbo

awesome link, thank you!

batuceper

Here is a thread from a related forum that sheds some more light on aluminum engines (blocks) vs. iron:

https://mbworld.org/forums/c-class-w...l?ref=esp-link

Plus, reading up on what else is out there (just Google aluminum vs. iron engine [block]), my impression is that most of the issues with longevity and wear and tear have been ironed out.


Presumably the cylinders (and other moving parts or parts that come into contact with moving parts) are not aluminum, as aluminum do not wear as well iron?

I would have thought an aluminum engine block would not last as long as an iron engine block, as the melting point of AL is much lower than FE, but I guess an engine is much more than just the engine block. Also, the aluminum may be an alloy, not pure AL?

Steve

GregW / Oregon

The MB process results in a thin iron lining in the cylinders. If the lubrication system is working properly the parts should never actually make contact.

twodivers

Or perhaps alloyed out as opposed to ironed out!

300DTurbo

The Diesel engine idles well even in 90 degree weather and AC blasting.

Had to idle it today for over 30 minutes with the AC cranked up. Handled well. No AC "fade" No annoying overheat fan kicked in. Good job MB!