Tomo Posted June 20, 2010 Posted June 20, 2010 For those of us in the industry you'll really appreciate this. The Wartsila-Sulzer RTA96-C turbocharged two-stroke diesel engine was built by the Aioi Works of Japan's Diesel United Ltd It is available in 6 to 14 cylinder versions. The engines were designed primarily for very large container ships. The cylinder bore is just under 1000mm and the stroke is just over 2400mm. Each cylinder displaces 1820 litres and produces 7780 horsepower. Total displacement comes out to 25,480 litres for the fourteen cylinder version. Some facts on the 14 cylinder version: Total engine weight: 2300 tonness (The crankshaft alone weighs 300 tonnes.) Length: 30 mtrs Height: 15 mtrs Maximum power: 108,920 hp at 102 rpm Maximum torque: -5,608,312 lb/ft at 102rpm The internals of this engine differ from most automotive engines. The top of the connecting rod is not attached directly to the piston. The top of the connecting rod attaches to a "crosshead" which rides in guide channels. A long piston rod then connects the crosshead to the piston. This is done to ensure that the sideways forces produced by the connecting rod are absorbed by the crosshead and not by the piston, thus avoiding the tendency for a cylinder to develop an oval-shape over time. Installing the "thin-shell" bearings. Crank & rod journals are 1000mm in diameter and 400mm wide. The crank sitting in the block (also known as a "gondola-style" bedplate). This is a 10 cylinder version. Note the steps by each crank throw that lead down into the crankcase A piston & piston rod assembly. The piston is at the top. The large square plate at the bottom is where the whole assembly attaches to the crosshead Some pistons And some piston rods The "spikes" on the piston rods are hollow tubes that go into the holes on the bottom of the pistons (above picture) and inject oil into the inside of the piston to keep the top of the piston from overheating. Certain high-performance motorcar engines have a similar feature. The cylinder deck (10 cylinder version). Cylinder liners are die-cast ductile cast iron. Look at the size of those head studs! A completed 12 cylinder version Hope you like it.
Guest rocketdriver Posted June 20, 2010 Posted June 20, 2010 Love it ... was apprenticed to a manufacturer of marine diesels .. used to love going to the experimental test bay and standing next to one of these beauties pounding away ..../
monty Posted June 20, 2010 Posted June 20, 2010 Thanks Tomo, Very interesting, how big can they go ? and when is big enough "big enough" ? Monty
patrick55 Posted June 21, 2010 Posted June 21, 2010 Tomo, do you know what fuel they run on? is it a crude oil fuel?
Tomo Posted June 21, 2010 Author Posted June 21, 2010 Yes, crude oil - quite a lot of it too, I would imagine.
blueshed Posted June 21, 2010 Posted June 21, 2010 That's cool, will it fit in the new hangar, so we can start it up on a Friday eve, so we have something to stand round and talk about. Albiet by our Zulu anr's and an intercom! Makes my Souvinier (spelling, don't look right) piston out of a 48 class loco look like a minature!
Guest ozzie Posted June 21, 2010 Posted June 21, 2010 so i imagine that you would out the engine on a big mount on the slipway then build the vessell around it. what whould the max rpm be, 200?
motzartmerv Posted June 21, 2010 Posted June 21, 2010 Been looking for a new donk for my bantam.. this could be perfect. It is a 2 stroke after all..:thumb_up:
Guest rocketdriver Posted June 21, 2010 Posted June 21, 2010 Presumably you will poke the a/c down one of the cylinders? ....
Ultralights Posted June 21, 2010 Posted June 21, 2010 200 RPM? we have a set of Sea King rotor blades for the Bantam that are perfect at that rpm. might need a few Undercarriage mods though
Tomo Posted June 21, 2010 Author Posted June 21, 2010 Ozzie: 108,920 hp at 102 rpm I've walked around one of these in a ship, it's pretty incredible - unfortunately it wasn't running at the time, so I don't know what they sound like.
Ben Longden Posted June 21, 2010 Posted June 21, 2010 But will it fit in the Camira? Seriously, though... whats the fuel consumption on that? Ben
stanzahero Posted June 21, 2010 Posted June 21, 2010 Beats the heck out of the biggest engine I ever built... I remember seeing an engine like this using a large (6 cylinder - 8 liter) diesel engine as an oil pump. I like how they engage reverse... they slow the engine down to an "idle" then advance the timing enough to fire it backwards...
GraemeK Posted June 21, 2010 Posted June 21, 2010 Terrific stuff Tomo - great to see that the old crosshead so important in the age of steam locomotives is still around in the latest diesels!
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