Big Boys Toys...

[b.walker5]

Think I might repower the lawnmower over winter.....







Maximum power: 108,920 hp at 102 rpm
Maximum torque: 5,608,312 lb/ft at 102rpm

[XJOK2PLAY]

WoW!!!!!

What in the world is that thing goin' in? A cruise ship, or the world's most awesome XS11??? Can you imagine... 5.6 MILLION ft. lbs. of torque... @ only 102 rpm!!! A few years back I saw a cool, new assembly line bike in this guys garage... parked on carpet of course. It had a 454 big block Chevy. He was a pretty large guy, which was a good thing. Said ya had to be "REAL gentle" on the throttle. Cool pics, B. Walker.

[BlackD1114]

That's the luxury model 10 cylinder with the built in service ladders on each side of each crank opening.

[b.walker5]

That's the luxury model 10 cylinder with the built in service ladders on each side of each crank opening.

I missed the ladders on first look....

Heres the rest of the blurb that came with it, and some more pics..

The Wartsila-Sulzer RTA96-C turbocharged two-stroke diesel engine is the most powerful and most efficient prime-mover in the world today. The Aioi Works of Japan's Diesel United, Ltd built the first engines and is where some of these pictures were taken. It is available in 6 through 14 cylinder versions, all are inline engines. These engines were designed primarily for very large container ships. Ship owners like a single engine/single propeller design and the new generation of larger container ships needed a bigger engine to propel them. The cylinder bore is just under 38" and the stroke is just over 98". Each cylinder displaces 111,143 cubic inches (1820 liters) and produces 7780 horsepower. Total displacement comes out to 1,556,002 cubic inches (25,480 liters) for the fourteen cylinder version.

Some facts on the 14 cylinder version:

Total engine weight:
2300 tons (The crankshaft alone weighs 300 tons.)

Length:
89 feet

Height:
44 feet

Maximum power:
108,920 hp at 102 rpm

Maximum torque:
5,608,312 lb/ft at 102rpm

Fuel consumption at maximum power is 0.278 lbs per hp per hour (Brake Specific Fuel Consumption). Fuel consumption at maximum economy is 0.260 lbs/hp/hour. At maximum economy the engine exceeds 50% thermal efficiency. That is, more than 50% of the energy in the fuel in converted to motion.
For comparison, most automotive and small aircraft engines have BSFC figures in the 0.40-0.60 lbs/hp/hr range and 25-30% thermal efficiency range.
Even at its most efficient power setting, the big 14 consumes 1,660 gallons of heavy fuel oil per hour.
The internals of this engine are a bit different than 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 so the the sideways forces produced by the connecting rod are absorbed by the crosshead and not by the piston. Those sideways forces are what makes the cylinders in an auto engine get oval-shaped over time.

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 you can see on the bottom of the pistons (left picture) and inject oil into the inside of the piston which keeps the top of the piston from overheating. Some high-performance auto engines have a similar feature where an oil squirter nozzle squirts oil onto the bottom of the piston

The cylinder deck (10 cylinder version). Cylinder liners are die-cast ductile cast iron. Look at the size of those head studs!:

[BlackD1114]

I wonder what the torque specs are on those head studs.

[tbishop11]

That is amazing! I thought some of the big stuff I worked on was cool, but that just blew it out of the water. No pun intended.

[Bigfoot]

Brings back memories. I have worked on engines like that. Pretty cool.

[oseaghdha]

I wonder what the torque specs are on those head studs.

Those are likely stretched hydraulically.

They apply a fixture which stretches the studs to a specified force, the spin the nut down to seat. Release the pressure and it's all good.