One f*ck-off big engine

[swiss]

While I'm waiting for me render to, um render...

Ladies and gentlemen, I present for your consideration the Wartsila-Sulzer RTA96-C slow-speed two stroke:

• Available in 6 to 14 cylinder straight configurations
  14-cylinder flavour weighs in a 2300 tonnes and is five decks high
  Said 14-cylinder engine outputs up to 84.42 MW / 114,800 bhp
  960 mm / 37.79 inch bore, 2500 mm / 98.42 inch stroke

And if that doesn't quite communicate how unspeakably large this thing is:

You can just about make out the guys working around it:



Installing the crank bearings:



And the shaft itself:



The cylinder head 'deck' - yes, those studs are twice the height of the guy installing them ^_^




Let the commence

[DaiRees]

[puggy]

Does it come with a 5 speed box ?? and do you think i would need to shorten
my drive shafts so it is not to tight a fit



That is fookin HUGE !!

[swiss]

Does it come with a 5 speed box ??

Fraid not Puggy, it's a direct drive It does between 92 and 102rpm, and you'd need to fit a controllable pitch propeller to yer motor

[steve_earwig]

F+ck me, that's big, no, hold on, massive, no, enormous, no titan.. oops, don't go there...fuggin hoooooooooooooooooooj! I love seeing stuff like that

960 mm / 37.79 inch bore, 2500 mm / 98.42 inch stroke

So, if my rusty maths is right, that's 1809.56 liters a barrel. Oh my god.

[steve_earwig]

Does it come with a 5 speed box ??

Fraid not Puggy, it's a direct drive It does between 92 and 102rpm, and you'd need to fit a controllable pitch propeller to yer motor

It'd never get off the ground...

[Doggy]

Now that's big. Get the injector pipework - look about 3"
What's it use for injection pump(s)?

[swiss]

Typically helical scroll pumps, one per cylinder driven from the cam shaft. Though Wartsila, being Finnish, often use a really weird design invented by some Finnish engineer chappy. Have a looky here.

[Doggy]

Fascinating stuff, Swiss
How long till we get 2-stroke automaotive diesels with electric superchargers for starting?
Now there's a thought....

[swiss]

Four-stroke is typically more efficient in small, fast engines. Can't remember why exactly, but you usually only go for the two-stroke crosshead when it's at 120rpm or below and the size of a house or bigger ^^

I do like the electric super charger idea though ^^

[teamster1975]

That's incredible!
Do you work on these particular beasties swiss?

[swiss]

No, nothing so offensively large. The particular example in the first picture is installed aboard Emma Maersk, the largest container ship ever built when she was launched in 2006 (and still the world's longest in 2008).

Most of the ships in our fleet are either very old or very new. The older ones mostly use twin medium-speed four-strokes, similar to those I posted photos of a while ago. Only two use slow-speed two-strokes, and they're not nearly as big. The newer builds are diesel-electric. The Bays (I was on Mounts Bay in 2007) have four four-stroke 900rpm Wartsila jennies. They spit out 6.6kV, routed through converters to two very, very large electric motors.

Straight Eight aboard Mounts Bay:



This is what a Bay boat looks like in dry dock:



The hole with the grill is the bow thruster tunnel. 'Tis a biggun:



Also, please don't show this thread to the Russians ^_^

[steve_earwig]

Is that where they attached the heroin? (French Con 2 was on telly last night )

[Welly]

How the hell do you cast an engine block...err..deck like that

Another thing bothering me is.........How long is the Dipstick?

Great thread Swissy, informative too - about two-stroke diesels and that

[mjb]

How the hell do you cast an engine block...err..deck like that

Lots of molten metal (probably have to have it melting as it's being poured) and a very big mould I reckon. Now, the crankshaft... how on earth...