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U1450L DOKA
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Discussion Starter #1 (Edited)
Innovativer Technologieträge gibt Ausblick auf kommende Unimog-Generation ab 2014 | Mercedes-Benz Passion Blog


OK, the blue UGN mule was related to the new one seen testing on the road, with the squiggly art/ Wrap, (and the wipers on top of the windshield )and they were mentioned as 2012 models, I think.

Here is a Euro 6 UGN chassis, with the hydraulics in a different place, aluminum wheels ( could be
Powder coated steel ),
Lots of stuff crammed in everywhere, and a tricky hinged and layered radiator/cooler/condenser , like pages in a book. (Still in the "wrong" place behind the wheels, To my mind...) It appears, however, that the radiator/condeser stack has been rotated 90 degrees, with the fan on the
Inside, pulling air inwards toward the frame ? Part of the ground effects so they can drive on the ceiling, maybe.

It appears that the center radiator is for the Engine ( obvious hoses), and the two on the side are A/C condenser and Oil cooler(s).

Other things to note: 6 Cyl Diesel, and it looks as though the radiator stack is only on the
Driver's side, not both, as before.
But, there is also a center mounted forward radiator with a Hydraulic fan on it....which is new.
It'll be interesting to see the PTO Drive - it appears to zoom right through the radiator, but the
Fan is in the way, and MB would never run a PTO shaft through the middle of a radiator....Would they ?
(Although....there were 411 Snow cutters with the live PTO shaft running through the cab
And out the windshield at about ear level....but no worries , about 8" away from the driver's head....probably Schmidt's Design, not MB's)

Listed as the 2014 Unimog.



Looks sorta H R Giger-Alien in parts.

The weirdest part is that I managed to post a link with the flapjack ! (Nothing like getting poked by a stick for motivation.)
 

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U1000Ag
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Boy oh boy ! These things are getting more and more complicated (read difficult to work on) !
I like some hi-tech, but I am sure glad I have a simple, easy to work on, "ancient" Mog. You can see and recognise the engine parts. Now you are confronted with a black box !

What are these things going to be like to figure out in terms of repairs in 30 years time ? You may not be able to fix a lot of stuff - I guess then you just remove it if you can - but what about keeping it street legal regarding emissions etc :eek:

We wait and see I guess. But then again, maybe I will be dead by then anyway, so it will not matter at all. :D

Still nice though :)
 

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That's not "almost mid-engine" That is totally mid-engine.

The UGN is pretty far back but I think this is farther.

Looks nice. I like the U20s and wouldn't mind if the new ones looked more like that.
 

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250GD Wolf
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Looking, I wonder if the mid mount Radiator, and hydraulic fan, isn't at such an angle, the PTO shaft runs right underneath it, just barely, but that's how it looks to my eye. (the front PTO runs directly of the Crank on the UGN does it not?, ie, you have to shut the truck off to stop it?, or was that start it...or am I completely making this up...)
 

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Discussion Starter #10 (Edited)
Thanks, Trev

My truck has a lot going on, as most of them do, and I have spent a fair amount of time
Either staring at the systems, or rolling around on a creeper and staring at the systems from
Below.....but I am glad that my truck is Brainless, and not packed as tightly as this chassis...
Acknowledging the fact that this is a shorty...

Note :

Mitas Tires...looks like ( something ) R75 22. ( must be 22.5, eh ?)

The sidewall seems to show MPT-23, which is line with their nomenclature, but not a model that shows up on their site.
75 / 22 also seems to show, but the only MPT on their site is an 18/22.5, and not in that
Pattern.
Everything else in their MPT line (20" rims) is not a 75 profile. So,a new tire maybe, or I am reading the sketchy sidewall info incorrectly.
The tread pattern is almost a dead ringer for BFG BAJA TA " Projects" , interestingly enough.

No sign of PTO shaft running under tilted front radiator. It may be there, but it looks like it
Might drop down at the engine and pop back up at the front bumper.Maybe.
( I agree with Trev, it most likely runs under the radiator, but it does not seem to show up
In the one side shot of that area...Just hidden under all of that other gack ...Maybe it
Runs downhill a little bit to clear the radiator, then pops up with a taller box than the current UGN runs ? )

The condenser ( with attached dryer ) and the heat exchanger live in a layered stack : shroud,
Framed mesh panel, condenser, cooler, then the fan. Pretty tricky, and the mesh panel could
Be easy to clean, by swinging it out and hosing it down or blowing it out from the backside.
edit : in looking closer, it looks like the mesh panel caps the shroud, with the heat exchangers inside the shroud, and the fan capping the inside end, as you would expect, not how I called it
Out above...

High bracket ( the only high point shown ) might be the mount for the exhaust stack, since
The air cleaner is on the other side.

The air cleaner is easy to get to, and the domed plastic cage at the aft end must mate up to
The snorkel, I'm thinking.

Permanent step in front bumper looks like a target for a rock, but is probably not much lower
Than the axle tube.

Looks like the batteries are on the passenger side, aft of the AdBlu Tank, with the fuel tank
On the driver's side, aft of the cooler stack.
The box / facade under what I think is the battery hatch might house the air tanks. They
Have to be somewhere, and there are not a lot of other choices.
 

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250GD Wolf
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The new one isn't in the WIS or EPC yet (that I can find) but this might help figure some of it out, here is the PTO transmission from the OM906 powered U500 (405_230)

You can see how much higher the output shaft is vs the input. New one could be the same or even more drastic, allowing room for the radiator.

As for the radiators, I know some of the newer skidsteer's with electric fan's you can put on reverse for a short moment to blow debris stuck to the mesh grate off, perhaps it has a feature like that?

I like the quote:

Similarly, the developer compensate with a new package components-the larger volume of aggregates as Euro VI, due to the large-scale cooling and the additional particle. Thus, the cooling is divided into several components at two points of the chassis. The larger cooling air requirement of the engine exhaust to stage Euro VI provides, inter alia, an optimized flow around the motor. The new cooling concept is also characterized by high maintenance.
 

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The current U500's have a reverse to clean function and IFRC it also allows you to turn them off in water or mud. They also pivot out from the frame for hose cleaning once they do get muddy.

This new truck is mighty compact. Everything being black make it kinda hard to make out the details. It does appear that the PTO scoots just under the rad unit. The lamp units are Hella 90mm bits and shouldn't be that hard to fab up since the whole family of bits is designed for ex works fabricators.
 

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I was told a while ago that the Euro VI stuff will produce so much heat that keeping that out of the cab may not really be feasible. I don't know how close that heat is to the engine rather than somewhere downstream in the exhaust, but the engine going backwards is better than Mogs following the Zetros's lead and moving the cab back!

:)

Looking at a google translate of the article "Behind the concept lies an adjustable exhaust camshaft. It is the first such camshaft in a diesel engine at all. Why do we need such a thing? Quite simply, the exhaust camshaft variable plays in the complex formation of the exhaust gas treatment, a not unimportant role, because by changing the timing of the exhaust valves, the temperature level in the exhaust system can be increased, enabling a regeneration of the particulate filter are enabled"

and "...the large-scale cooling and the additional particle. Thus, the cooling is divided into several components at two points of the chassis. The larger cooling air requirement of the engine exhaust to stage Euro VI... "
 

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These are great pictures to show just how low the center of gravity is in a Unimog!

Bob
 

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250GD Wolf
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Ok, its time to play "what is it?", Truktor's keen eye spotted something on the back of the truck

For review, the test mule spotted earlier

Then a shot of the back, see the "device"?

And finally, said device on the rolling chassis
 

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The demo chassis looks like you could use it as one of those really flat aircraft tugs. Simple math says the top of the engine is only 48 to 60 inches from the ground.
 

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Discussion Starter #18
It looks like a stowed Bratwurst cooking grill. Can't see a bottle opener anywhere though.

Or a cooler for the rear diff ( remember the propeller on the driveshaft ?), although the placement seems odd for that, and if you backed into branches, you could poke holes in it...
 

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That looks like a hydraulics cooling unit. On the U500's they mounted it under the deck, this space may no longer be available.

From the Body and Implement Guide:
"6.1.4 Oil heating
In the case of continuous consumers, the implement manufacturer
must ensure that the maximum oil temperature (approx.
194°F / 90°C) cannot be exceeded under the expected conditions
of usage. Further details should be obtained from the oil
manufacturer.
The power hydraulics radiator, which is integrated in the platform
subframe, has a cooling performance of approx. 15 kW
(20 hp). If a higher cooling performance is required, the implement
must be equipped with an additional radiator. Basically, it
must be guaranteed that unnecessarily high loss of output is be
avoided via the coordination of all hydraulic components with
regard to the relevant use or operating point. In case of using
flow regulators the maximum flow rate must under no circumstances
be exceeded."
 
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