I found an old engineering book from the 1930's, it had a loop scavenge diesel 2 stroke made by Alco!! It had an extra row of intake ports that were one way valve controlled, they had more duration than exhaust but the one way valves only allowed air to flow after exhaust port was closed, not on the downstroke, so that u could pressure charge it more without losing extra air out of exhaust! genius!
8 cylinders and a little over 12MW (if I remember correctly). It is a double-acting, blower-fed engine. This particular engine was used for about 45 years as a generating engine for the city of Copenhagen. It is still used sometimes to generate emergency power.
It is indeed the exhaust valve. This B&W diesel is not equipped with opposing pistons. It is a doubleacting diesel engine, you have combustion at the top and the bottom of the piston, intake at the cylinder liner and exhaust through those sliders you see. Each of the 8 cylinders has a exhaustpiston at the top and at the bottom of the cylinder. the hissing noise you hear is the lower exhaust piston because they tend to leak. Im from denmark and this engine is situated at Dieselhouse in copenhagen
This engine uses so-called "exhaust pistons" which move with the piston and uncover the exhaust ports when they move inward. They ride on a separate shaft which is driven by a lever connected to the cross-member which drives the crank.
I sailed in Blue Funnel A Boats which had this engine, which were built in 1947. Each cylinder had 3 pistons, Main Piston and 2 Exhaust Pistons and 4 Injectors ( Fuel Valves .* cylinders ad RPM of 116.This engine fired from Top and Bottom of the Piston and that is why it is called a Double acting engine -RG
I sailed in M.V.Automeden,M.V.Anchises,M.V.Autolycus all Built in Harlaend & Wolf Docks of Belfast. Never had a Scavenge fire .There is a working model of this engine in South Kengsinton Museum in London.The Blowers were Roots Blowers and No Turbocharging ,Had to lubricate the Exhaust Pistons regularly.
That thing is AWESOME!!! I work with much more modern engines, but that thing is really cool, especially because all the exhaust valves are exposed like that.
Exactly, it fires on both sides of the piston. That isnt the injector lines, its a battery of inspectionglasses for the lube oil, one battery per cylinder. The injectorpumps sits right under the upper catwalk on the engine. Oh yes, its a difficult seal, thats why you can hear that hissing noise and the smoke pouring out right beside the controlpanel when it starts...
It was a 8 cylinder Engine .I was the third engineer in Autolycus in 1975 when she returned from Angola without discharging any cargo and stayed in Gladstone docks until the whole cargo was discharge Ranjith Gurugamage from Sri Lanka
This isn't actually an opposed-piston engine, but a double-acting engine using a single piston with a sliding member which transfers the power to the crankcase. It is a remarkably simple design which uses exhaust valves actuated by the same sliding member.
@916fanatic1. This is the only working engine left of its type. A marine engine in a shore based power station. If you had been to sea as an engineer at the time. This is the type of engine you would have worked on. To be able to see this in power house start up once a month is a credit to the Danish Authorities.
My grandad worked on double acting diesels, the problems were the side of the piston with the conection through the stuffing box, was prone to leak at stuffing box. They used a uniflow type on some with strange slide valve exhaust valve. See vintage hot bulb engines website, they have a section on normal diesels, with, a cross section of the harland and wolffe engine!!
Bear in mind this is a shore based installation. on board ships life is harder...Most of marine engineers are half deaf..including my dad. i'm a former deep sea captain,now a tugboat skipper
Also: Built in '32 and world biggest dieselengine for 40 years measured in efficient HP Pressure, compression: 35 atmosphere Pressure, maximum: 50 atmosphere Moving middlepressure: 7 atmosphere Diesel is injected at 350-400 atmosphere Dieselconsumption: approx. 240 g./kWh at 12.000 kW Exhausttemperature: 300 degrees celsius at 12.000 kW Bearings is lubricated by pressure at 2,5 atmosphere Engine is still a standby unit, often used at blackouts, to reestablish grid frequency
This is an eight cylinder double acting opposed piston diesel engine, type DM884ws-150, built by Burmeister and Wain in 1933 for the H C Orsted Power Station in Copenhagen. For 30 years it was the most powerful in the world. It is still in running order and started on the first Sunday of each month for visitors to the DieselHouse Museum Cyl bore 840mm stroke 1500 mm rpm 115 engine is 24.5 mts long, 12.5 mts high and weighs 1,400 tonnes
Worlds bigget diesel engine for 40 years. 8 cylinders 15000 kW at 115 rpm (normal operating range) Bore 840 mm Stroke 1500 mm Built in 1932 enginenumber 2000 flywheel weighs 80 ton crankshaft weighs 140 ton engine weighs 1400 ton enginelength 24,5 meter & 12,5 meter tall 4 roots blowers deliver 1800 cubicmeters of scavengeair a minute, lubrication consists of 40 ton coolingoil which enters the engine 10 times a hour. I have the datasheet for this engine + some technical drawings!
Well. you might have electrical water circulation pumps for cooling purpose. Electric air compressor for startup and some controls (clutch if applicable,governors) Fuel must be transferred fro settlement tanks to day tanks,as well as lube oil,all with electrically driven pumps (seldom powered by engine itself) Prelubrication pumps are electrical. Of course on older engines you had less electrical needs,but problem remains
The first I heard of this engine was when I happened on the sectioned model of it in the London Science Museum. I've always thought a double-acting combustion engine must be possible, but I've never seen one before. I'd be interested to know why the idea never became popular.
hmmm. I see, they're pistons with a ridiculously short stroke. So, they've got intake ports on the cylinder liner and exhaust valves on the side? Anyways, this thing is really cool. I love huge complex machines in any form. You know that the designing engineers just had a ball with it.
Thanks. I guess it will use more fuel than my 60bhp diesel car!! lol. However I think it may use less fuel per kw/h!? I wonder; do u know a typical smaller diesels kw/h consumption for comparison?
i forgot to add the loudest things: turbochargers. usually in a big engine you have 3 or 4 turbochargers for scavenging air. in engineers jargon theirs sound is known as the "Lion's Roar"
It is not an opposed piston engine like faribanks morse and such. This is a doubleacting diesel engine with combustion at the top and the bottom of the piston and only one crankshaft. It is infact the same princip as you find in a car, the only difference is the combustion taking place at the bottom of the piston. I have the schematic on this engine with cut-away drawings of a cylinder......
thermold is Correct. It is still a great marine engine. You would never be able to see such a feat of engineering anywhere else. Even if it was on a ship you would never capture this on video.
The TV company and car company make boats now?? I havent seen anything here in the states that would suggest that. Personally, I'd stick to some custom built boats out of stuart fla and use either Cat or MAN diesels thank you very much...
@keoki1978 Hyundai producing boats for long long time...why people always think that electronic industries is primary??? Samsung is just name of company. The products are actually what company present. Also did you know that Yamaha is 4th company in the world in production of steel and pig iron from blast furnace???
Probably because its is only a film clip on youtube. I can assure you that the engineer at the controls is not wearing ear defenders to enhance his looks. Obviously you have never been in a marine engine room....
On the last ship I was on we had a brand new B&W 6S50 slow-speed that was made in China by Dalian Marine Diesel, and the thing was a total piece of crap, everything was cheap and falling apart. Latest rumors were that B&W was thinking of revoking their license to build the engines because they did such a bad job.
It was purposely designed for a shore based application,And b&w did not have any marine engines that big in 1932.Most ship power was steam turbine,reciprocating and turboelectric.It is NOT a marine engine.
@CE750 You'd wonder, wouldn't you?! There seem to be some jossers who get their jollies in life by pushing doors marked 'Pull' then bitching about poor design.
I found an old engineering book from the 1930's, it had a loop scavenge diesel 2 stroke made by Alco!!
It had an extra row of intake ports that were one way valve controlled, they had more duration than exhaust but the one way valves only allowed air to flow after exhaust port was closed, not on the downstroke, so that u could pressure charge it more without losing extra air out of exhaust! genius!
8 cylinders and a little over 12MW (if I remember correctly). It is a double-acting, blower-fed engine. This particular engine was used for about 45 years as a generating engine for the city of Copenhagen. It is still used sometimes to generate emergency power.
It is indeed the exhaust valve. This B&W diesel is not equipped with opposing pistons. It is a doubleacting diesel engine, you have combustion at the top and the bottom of the piston, intake at the cylinder liner and exhaust through those sliders you see. Each of the 8 cylinders has a exhaustpiston at the top and at the bottom of the cylinder. the hissing noise you hear is the lower exhaust piston because they tend to leak. Im from denmark and this engine is situated at Dieselhouse in copenhagen
This engine uses so-called "exhaust pistons" which move with the piston and uncover the exhaust ports when they move inward. They ride on a separate shaft which is driven by a lever connected to the cross-member which drives the crank.
I sailed in Blue Funnel A Boats which had this engine, which were built in 1947. Each cylinder had 3 pistons, Main Piston and 2 Exhaust Pistons and 4 Injectors ( Fuel Valves .* cylinders ad RPM of 116.This engine fired from Top and Bottom of the Piston and that is why it is called a Double acting engine -RG
I sailed in M.V.Automeden,M.V.Anchises,M.V.Autolycus all Built in Harlaend & Wolf Docks of Belfast. Never had a Scavenge fire .There is a working model of this engine in South Kengsinton Museum in London.The Blowers were Roots Blowers and No Turbocharging ,Had to lubricate the Exhaust Pistons regularly.
That thing is AWESOME!!!
I work with much more modern engines, but that thing is really cool, especially because all the exhaust valves are exposed like that.
Damn hell it's massive, making noise AND comes from a ship... I love it to bits! =D
Nice to hear 2-stroke engine sound!
Exactly, it fires on both sides of the piston. That isnt the injector lines, its a battery of inspectionglasses for the lube oil, one battery per cylinder. The injectorpumps sits right under the upper catwalk on the engine. Oh yes, its a difficult seal, thats why you can hear that hissing noise and the smoke pouring out right beside the controlpanel when it starts...
It was a 8 cylinder Engine .I was the third engineer in Autolycus in 1975 when she returned from Angola without discharging any cargo and stayed in Gladstone docks until the whole cargo was discharge
Ranjith Gurugamage from Sri Lanka
This isn't actually an opposed-piston engine, but a double-acting engine using a single piston with a sliding member which transfers the power to the crankcase. It is a remarkably simple design which uses exhaust valves actuated by the same sliding member.
@916fanatic1. This is the only working engine left of its type. A marine engine in a shore based power station. If you had been to sea as an engineer at the time. This is the type of engine you would have worked on. To be able to see this in power house start up once a month is a credit to the Danish Authorities.
My grandad worked on double acting diesels, the problems were the side of the piston with the conection through the stuffing box, was prone to leak at stuffing box.
They used a uniflow type on some with strange slide valve exhaust valve.
See vintage hot bulb engines website, they have a section on normal diesels, with, a cross section of the harland and wolffe engine!!
This engine was tested to make 15 megawatts of power and still makes that much to this day; I believe it never had a piston replaced.
Excellent! It is reminiscent of the Sun-Doxford.
This is very beautiful, thank you for sharing.
Bear in mind this is a shore based installation. on board ships life is harder...Most of marine engineers are half deaf..including my dad.
i'm a former deep sea captain,now a tugboat skipper
Also:
Built in '32 and world biggest dieselengine for 40 years measured in efficient HP
Pressure, compression: 35 atmosphere
Pressure, maximum: 50 atmosphere
Moving middlepressure: 7 atmosphere
Diesel is injected at 350-400 atmosphere
Dieselconsumption: approx. 240 g./kWh at 12.000 kW
Exhausttemperature: 300 degrees celsius at 12.000 kW
Bearings is lubricated by pressure at 2,5 atmosphere
Engine is still a standby unit, often used at blackouts, to reestablish grid frequency
This is an eight cylinder double acting opposed piston diesel engine, type DM884ws-150, built by Burmeister and Wain in 1933 for the H C Orsted Power Station in Copenhagen. For 30 years it was the most powerful in the world. It is still in running order and started on the first Sunday of each month for visitors to the DieselHouse Museum
Cyl bore 840mm stroke 1500 mm rpm 115
engine is 24.5 mts long, 12.5 mts high and weighs 1,400 tonnes
The same principle is used in diesel-driven pile-driving hammers.
This is fascinating stuff! Thanks for posting!
Would be great to include a schematic and/or animation of the "innards" of this engine!
Worlds bigget diesel engine for 40 years.
8 cylinders
15000 kW at 115 rpm (normal operating range)
Bore 840 mm
Stroke 1500 mm
Built in 1932 enginenumber 2000
flywheel weighs 80 ton
crankshaft weighs 140 ton
engine weighs 1400 ton
enginelength 24,5 meter & 12,5 meter tall
4 roots blowers deliver 1800 cubicmeters of scavengeair a minute, lubrication consists of 40 ton coolingoil which enters the engine 10 times a hour. I have the datasheet for this engine + some technical drawings!
Well. you might have electrical water circulation pumps for cooling purpose. Electric air compressor for startup and some controls (clutch if applicable,governors) Fuel must be transferred fro settlement tanks to day tanks,as well as lube oil,all with electrically driven pumps (seldom powered by engine itself) Prelubrication pumps are electrical.
Of course on older engines you had less electrical needs,but problem remains
Amazing engine
Samsung and Hyundai are the top boat makers in the world, now.
Never seen this before. You must use an incredible ammount of starting air to power it up!
Just incredible! Anyone know how many horse power she is?
The first I heard of this engine was when I happened on the sectioned model of it in the London Science Museum. I've always thought a double-acting combustion engine must be possible, but I've never seen one before. I'd be interested to know why the idea never became popular.
These are not exhaust valves, but upper pistons. Do some searching on "Doxford opposed piston" an d you will get the idea.
hmmm. I see, they're pistons with a ridiculously short stroke. So, they've got intake ports on the cylinder liner and exhaust valves on the side?
Anyways, this thing is really cool. I love huge complex machines in any form. You know that the designing engineers just had a ball with it.
240g/kwh;
does this mean for every kw of power it uses 240g of diesel per hour?
so if it had 10,000kw then it uses
2400,000g/ 2400kg per hour?
Thanks.
I guess it will use more fuel than my 60bhp diesel car!! lol.
However I think it may use less fuel per kw/h!?
I wonder; do u know a typical smaller diesels kw/h consumption for comparison?
Probably because it runs only on diesel. Thats not to say it was one of the best engines ever built.
It means to produce 1kw for an hour, it uses 240g of diesel.
how much fule dos it take to keep it runing
i forgot to add the loudest things:
turbochargers. usually in a big engine you have 3 or 4 turbochargers for scavenging air.
in engineers jargon theirs sound is known as the "Lion's Roar"
Why is this so quiet? I thought an engine of this size would sound like 10 times as loud as a loco engine or a ships engine.
Are generators needed on this sort of engine?
if so why?
It is not an opposed piston engine like faribanks morse and such. This is a doubleacting diesel engine with combustion at the top and the bottom of the piston and only one crankshaft. It is infact the same princip as you find in a car, the only difference is the combustion taking place at the bottom of the piston. I have the schematic on this engine with cut-away drawings of a cylinder......
Wartsila vs Hyundii who wins?
How many cylinders and HP is this beast?
There is one!
If you ever need a crank shaft etc rebuilt or made I know a local shop that does this work.
ya. your right.
thermold is Correct. It is still a great marine engine. You would never be able to see such a feat of engineering anywhere else. Even if it was on a ship you would never capture this on video.
Why would 6 people dislike this? What drugs are they on?
whats the fuel consumption?
The TV company and car company make boats now?? I havent seen anything here in the states that would suggest that. Personally, I'd stick to some custom built boats out of stuart fla and use either Cat or MAN diesels thank you very much...
I would like to see these
i dont see the gear assembly driving that roots blower...unless its a 10 inch jackshaft coming from either end of the engine
It is chain driven from the crankshaft. The chain is the largest one shown on the video. You can climb it like a ladder to inspect the top sprocket.
@keoki1978
Hyundai producing boats for long long time...why people always think that electronic industries is primary??? Samsung is just name of company. The products are actually what company present.
Also did you know that Yamaha is 4th company in the world in production of steel and pig iron from blast furnace???
oh yes yes
Probably because its is only a film clip on youtube. I can assure you that the engineer at the controls is not wearing ear defenders to enhance his looks. Obviously you have never been in a marine engine room....
8 cylindre en ligne énormes!!! moteur de Paquebot lol ya une putain de compression!!
In a real engine room you will have to add generators,ventilators compressors,tenth of pumps in a much reduced space
On the last ship I was on we had a brand new B&W 6S50 slow-speed that was made in China by Dalian Marine Diesel, and the thing was a total piece of crap, everything was cheap and falling apart.
Latest rumors were that B&W was thinking of revoking their license to build the engines because they did such a bad job.
This is not a marine engine.Its in the powerehouse in copenhagen denmrk
It was purposely designed for a shore based application,And b&w did not have any marine engines that big in 1932.Most ship power was steam turbine,reciprocating and turboelectric.It is NOT a marine engine.
I C
Then give me your email, and i will send them to you as soon as i can...
@CE750 You'd wonder, wouldn't you?! There seem to be some jossers who get their jollies in life by pushing doors marked 'Pull' then bitching about poor design.
Fartsila
china go figure