M.A.N. U-boat diesel engine Running

[Dualshock21]

It looks complicated 

[Landotter1]

Man, is that cool or WHAT??? Wonder what the diameter of the piston is.....

[Squarerig]

Befinden sich diese Motoren in einem Museum und wenn ja,wo liegt es?Vielen Dank fuer den Film.

[crankbv1]

Think about this...ln their day,these engines were designed and built to run continuously 24/7 if required. Mid Atlantic there are no lay-bys or recovery services. Any major breakdowns and you were stuffed. The electric motors might give you another 8 to 10 hrs at around 9 knots before the batteries died but no more. The lives of every man depended on those diesels keeping turning..and this in 1914-18.

[crankbv1]

lt's so unfair to say that this WW1 engine is a piece of crap and comparing it to a WW2 Detroit motor. lt's like saying that Sopwiths and SE5s were crap planes compared to the Spitfire or Mustang. MAN diesels were and are amongst the most respected motors in the world...ask a long haul truck driver. lt should be remembered that Diesel was German and perfected them well before we did. So let's give credit where due. By the way...they didn't normally dive on Diesel power.

[jrw6137]

GERMAN ENGINEERING!!!

[MegaBartSmart]

lol what a low speed piece of crap........the usa wwII subs where the best the 2 stroke GM Detroit Diesel is the only way to submerge

[mrspivvy]

you learn something new every day, I didn't realise they HAD diesels back then

[Jeansschwimmer]

@mrspivvy Rudolf Diesel wanted to build the perfect combustion engine. As the temperature of an expanding gas drops together with its pressure, he even thought his principle would work without cooling, resulting in a high thermal efficiency. He was wrong about the cooling, but his engine make more of their fuel than petrol engines. Depressed from overwork Diesel committed suicide in 1913. In 1912 the "Selandia" was the first big merchant ship with Diesel engines.

[granddad2002]

It sounded so quiet. I am impressed for the engineering of that day?

[Jeansschwimmer]

@granddad2002 Compression was lower than today and the volume of the cylinders is bigger. All those early "oil engines" run very smooth and silent, but the ratio between horsepower(kilowattt) and their weight is of course somewhat steam-engine-like

[EnigmaNZ1]

WW1, wow, what a beautiful piece of machinery, hard to believe it is almost a century old.

[Haffschlappe]

Made in Germany--not made in China!!!!!!!!!! :)

[johnster1964]

There is one coming up for sale - look at the vintage engine section in the catalogue of Hermann's Historica (goole will take you straight there) Euro 40k !!

[dmreichwein]

@johnster1964 Thanks for sharing this. Very interesting information to read on the history og WW1 u-boat engines. I doubt if this one will ever run again however.

[ollenhauer1]

beide grosse und dann A:K:,tiefer auf 280 meter gehn ,klar machen zum unterwasser schuss,hinten um 10,voren um 3 eli.,sagsam durchpendeln lassen.anblasen u.s.w

[jeffrey19621]

Sounds great.

[glynamus]

best music ever! the birds in spring cannot sound as beautiful.

[andy67discofan]

klasse ein diesel von einen u bott von 1917 das wahr noch deutsche wetarbeit läuft heute noch wahnsinn was damals schon möglich wahr technisch schöner film danke

[luiseduardo586]

Where's Johann!??

[microdubber]

Curious - I see from your description that this engine was in service until the 1960s.

What is its status now?

Remarkable durability - German engineering at its finest!!

[JetMechMA]

"All this machinery, making modern music....And the magic music makes your morning mood."

[Barnekkid]

Beautiful engine. German diesel at its best.

[BlakeMason2]

It is awesome to see what people could accomplish w/o computers, cad, and CNC. 430 HP @ 375RPM is quite a feat in 1917.

[Johannes1955]

Very nice video and a long one at that, thank you for posting!

[Vertuas1]

Theres no replacement for displacement! lol

[formeliandialogue]

I didn't see the vague ghostly figure of Johan(the ghost) with his head leaning against the pistons.

[formeliandialogue]

Amazing piece of Naval engineering history.

[TheUberGopher]

Yeah, thanks for posting this.

Very interesting.

[aleu650]

massive engine and only 430 HP?

[Vertuas1]

@aleu650

Yeah its only running at 375 RPM, the engine in your moden day car will produce much more power becasue it will run up to about 7,000 RPM

[aleu650]

@Vertuas1 you're right, my (not so modern) car, runs 750 RPM at idle !!!



[Jeansschwimmer]

@aleu650 Why not: low compression and low revolutions: That is why it is still working.

[Nza420]

cam doesn't appear to be overhead. valves are definitely overhead, but not cam..

[moonerdizzle]

@Nza420 the valves are operated by a rocker arm, the cam is probly under the front shroud. my old corolla with the 4ac was a over head cam engine wich still used rocker arms to actuate the valves

[no1superguy]

Would you mind if I used the sound from this video in an artwork? it's a beautiful and frightening noise.

[GBFclan]

WHAT ? I CANT HEAR YOU WAT DID YOU SAY ?

[navalscience]

When underwater, I wonder where the exhaust gasses go? and the fresh air for combustion coming from? Anybody please explain, thanks!

[supertrucker1960]

@navalscience It's my understanding that the exhaust was vented into the sub and these men lived for months at a time with severe headaches because of it.

[Lightz21H]

@navalscience haha XD nice i have no idea

[Tay651]

@navalscience When they are running submerged they run on batteries and electric motors. They could only run the Diesels on the surface.The exhaust is vented out through the sides of the boat near the stern. Fresh air came through the open hatches in the conning tower. Later boats in WWII were equipped with a snorkel allowing them to run their Diesels while cruising just below the surface...

[exojjl]

it's calming sound.

[EnigmaNZ1]

When you consider the first diesel was built only 20 or so years previously, a crude coal dust fueled single cylinder engine, amazing development.

[barkulator]

Industrial art. Too bad it was a war machine but beautiful nevertheless.

[Factnotfictionpeople]

Is the unusual valve gear movement due to the video frame rate?

[AndreiTupolev]

@Factnotfictionpeople

i expect probably with the speed it idles at, that's the actual speed the rockers go up & down.

[Factnotfictionpeople]

@AndreiTupolev I didn't mean the speed. If you look, you'll see that most of the valves appear to open/close/open (or the other way around) and I wondered whether it was a peculiarity of the digital videoing process.

[redwagen1]

truly amazing

[mann8942]

Isn´t something ?

German Tech still never ceases to amaze me !

Tks for posting !

[pancreasmen]

the classic u boat engine with the visible pistons!!!

[Bamchucknorris]

@pancreasmen those arent pistons. they are the rocker arms and valves on the cylinder head

[smiffy1071]

For any engine to still be going strong after 93 years is some testament to the very high quality of the original build!

[morderca95]

most awesome engine ive ever seen

[blumenthol]

I have read that the noise was so bad it would drive some crew insane

[gpyeam]

@blumenthol

had my headsets on while watchin it , realy is a noisey monster ;)

[llandudnoboy]

It just goes to show how resilient diesel engines are.

I'm unsure of the origins of this engine but considering it's well over 60yrs old it sounds in fine fettle.

[05clenharth]

read the description. built in ww1

[dumapies]

how much torque?

[Mitsugejl]

Is it a blast injection engine? Thinking of that constant hissing noise :) Cool it still runs i must say, pretty old engine :)

[CRF250RGUY]

Amazing!! Thank you for the video!

[mgkeoh]

They were know as petcocks. They could check the combustion flame by working with a sort of two colour visual guestimate. These engineers were real experts completely tuned into their engines. If there was a slight change in sound they would notice it straight away, even as the boat climbed up a waves where the rpms on the screws would change under the load and weight of the boat. Long live the Diesels and long live the experts who are making all these project possible.

[b43xoit]

_Das Boot_ shows crew members opening valves on the sides of the engines and letting out some burning vapor. Was that realistic? Why would it be necessary to do that?