Re: B&W Double Acting 2 Cycle @ Diesel House, Copenhagen

[mmigran]

A true pleasure looking after these beasts. Today's single acting B&W engines produce +110.000 BHP.

[angelonegrh]

If they would fit tires to the house, they could drive it around.

this thing would totally do it

[partsproduction]

I'd love to see the machines that made this engine

[KillerJoeFIN]

How they move the power from piston to crankshaft?

[Jimfoxyboy]

Now I wish I had known about this engine when I was a kid. Used to come from Canada visit my grandparents just outside the city up until around 1986. We had always given Copenhagen city core all the attention.

I love the fact that it was recently used to help restore power to the city. Still useful after all these years despite its age. Bet they were glad they decided to keep it around. Rather impressive what they could build this in an age without computers.

[Kerogas]

So did they ever get around to fixing that leaky assed crosshead on their national treasure . ?

[marshamcc01]

@Kerogas "Those parts are not very easily accessible for overhaul" :)

[legebakkenb]

Fun ! And a very good explanation in english ! Thank you so much.

[asphalion123]

8 cylinders 32 fuel valves. They were prone to poor cylinder lubrication hence scavenge fires.

[asphalion123]

I sailed with these engines in the 1960s in Blue Funnel Line Liverpool

[sbd403]

Fantastic!

[bebajoro77]

Wonderful indeed. What a beauty. And an explatation from a VP who clearly loves and actually knows his subject.

[MuellerNick]

I can only say: *Wonderful*

Thank you for keeping that treasure up an running and for the video I could watch for hours.

[marshamcc01]

I read somewhere this engine ran at nearly 100% power for nearly 40 years straight. (Besides downtime for maintenance and repairs of course). No major components were ever replaced, and yet it still runs as good or better than new.

[Kerogas]

I see one leaky crosshead , I am sure they will get right on it :-)

[iusetano]

Fantastic video. Very informative and well done. *****

[bobbie4]

Thank you very much for posting this video.

I've always been a fan of Diesel engines and it's nice to see one this large still in operation all these years later.

[TheNoudio]

Good one, this video. It is about pride, that is truely deserved! (thanks MAN/ B&W)

[hfneerd]

I was there today and see the engine work for around 6 minutes. This is what we always miss at the museums: we want to see the exhibits in action. Great fun! Definitely a 'powerful' experience. On top there is free admission. Highly recommended :)

[Uniflow]

I sailed with this type of double acting engine with Blue Funnel, except that our engines were built under licence by Harland and Wolf in Belfast and the three pistons were the same diameter and a unit could be overhauled a little more easily. Still gave an engine room full of smoke and the blowers rattled like a bag of hammers.

Anyone know what the music is at the start of the video?

[Uniflow]

Also, when the engines were old and the cylinders worn, the scavenge air manifold, would fill with burnt cylinder oil and muck that had to be cleaned by the Chinese crew , a filthy job, but we used to get scavenge fires. The combustion would blow past the piston and set the manifold on fire, sending the exhaust temperatures rocketing and sparks would fly out of the manifold drains, that were left cracked open. The engine was either stopped or slowed and dry powder used to put the fire out.

[Robkat3751]

Where would one see drawings for an engine like this. I would like to see what goes on inside.

[Kerogas]

Talk about grabbin' hold of the loud handle !

[singful]

cool i like to see all the old school engons and i like to work on them better.

[panamic855]

nice music what is it call?

[marshamcc01]

This is a stationary engine used for a backup genset at a power plant. So no need for any reversing controls :))

[ozsteamnut]

classic piece of machinery

[tuttt99]

Wonderful!!

[EikC]

03:19 - A turbo jar-jar. Well I'll be damned.

[TECHKLEC]

Double action diesels were used in German U-boats and, here in the states, by Fairbanks-Morse in the Trainmaster locomotive. This is a great video!

[916fanatic1]

Fairbanks morse never built a double acting diesel,the locomotives were opposed piston powered

[TECHKLEC]

Well, yes, thank you.

Actually, that's what I meant.

They were maintenance nightmares.

[chriskoed]

i have been there my old football trainer works there. its HUGE:D

[proutsos]

Very beautiful!

[Gigagannet]

Top Marks

Excellent video

[wonka109]

That was cool. Does anyone have any pictures or videos on the internals of a double acting diesel?

[mysterymeatgrinder]

Now THAT is an engine!!! Great video, very informative.

[KC0TLV]

Very nice video and it's very nice to get information on this interesting engine. Being in the US it's not too easy to get to Copenhagen ;-) Thanks for shedding some light on this piece of machinery :-)

[nugga47]

Nice

[marshamcc01]

Engine specs:

Production number: DM 884WS-150

Max Power output = 15,000 kw or 22,500 bhp @ 115 rpm

Fuel consumption = 240 g per kWhr @ nominal 12,000 kw = 2,880 liters/hr = 12.6 gallons per minute lol

[douro20]

That amount of fuel consumption is not bad when you consider that this engine is only about twenty-eight percent efficient. Modern engines are around sixty- to sixty-five percent efficient and can produce three to four times as much power using the same amount of fuel.

[marshamcc01]

Highest thermodynamic efficiency I have heard of is maybe the KTA96 or KTflex96 series engines, about 52%. Still incredible when you consider pumping losses, the losses from several 1 ton+ pistons speeding up, decel, and repeating. If this engine is really 28% efficient, still beats your average gasoline powered car which only 20% of the energy is used :))