check out this deisel engine *massive*

LEDBE
I

iddibhai

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http://www.bath.ac.uk/~ccsshb/12cyl/

close to 110k HP and 5.6M lb/ft @ 102 rpm

whoa. check out that top speed: 102 rpm (no typo) i have a hard time imagining how slow that is, and what the flame propogation must be like. each cylinder has a bore/stroke of 38/98 inches.

garnered from elsewhere: operating speed 90-100rpm, boost pressure 18.2bar, starting via compressed air distribution, then start fuel injection, piston speed 8.3 m/s. in the last pic, the gentleman is standing between two rectangular things: fuel injection pumps /ubbthreads/images/graemlins/smile.gif i think the cylindrical thing on the far side of engine on the top is the fresh charge plenum.

heck of a motor /ubbthreads/images/graemlins/smile.gif i wanna see the turbo on *that* sucker.
 
Wow. I won't even add an exclamation point...'cause it just wouldn't do it justice.

Wow.

I would have thought that turbines of some kind would make more sense (fewer moving parts, simpler, etc.). But, I guess the thermal efficiency of the diesel must swing the overall value toward the diesel.

I'll say it again. Wow.
 
thats wicked insane.i winder what they will put it in?trane?
 
DAMN!

I knew there were some big engines....

This one TAKES THE CAKE!!!!

Makes that large looking 7.3L IHI under the hood of my F-350 look insignificant!

Of course I don't burn quite nearly 1660LBs/hr. at my engines most efficient speed either!!!
 
ikendu, turbines are suited to higher speed operations, so they are used in military ops, where in addition to higher speeds, they also require constantly changing speeds and the ability to start or stop at short notice. something like 0-27-0 knots all within a couple of minutes. the monster picted and all other low speed deisels are suited for continious duty at one speed (super tankers, etc)
 
They design them to turn at around 100 rpm so they can directly drive the propeller without gears. The gears of a turbine driven ship are the most expensive thing in the engine room.

The disadvantage of diesels is they require more maintenance than turbines. At least it used to be so when I studied this stuff 40 years ago. Those things burn residual fuel. That's the stuff thats left over after everything else is removed from the crude oil. I believe its the same stuff asphalt roads are made of. After each journey the heads are removed and someone climbs down into each cylinder and scrapes off the carbon. Unless they have figured out a better way.

Well there is another disadvantage too. They are bigger and heavier than turbine engines, especially the 100 rpm ones. A lot of the carrying capacity of the ship is consumed just to carry the engine.
 
the specs for this one say it uses fuel oil, so i'm guessing it is slightly more refined.
 
i like nuke powered ships.its amazeing how they can stay out to sea so long
 
Re: check out this diesel engine *massive*

http://www.armscontrol.ru/subs/disposal/proe1210.htm

"...a reactor compartment is load[ed] on a barge and transported along the West coast and Columbia river to DoE's Hanford Nuclear Reservation in Washington state. The final stage of transportation is carried out by multiple wheel high capacity trailers. Reactor compartments are placed in a specific trench at Hanford Site for indefinite storage. Experts conclude, that it will take at least 600 years before the first pinhole penetration of some lead containment areas of the reactor compartment packages. It will take several thousands years before a leakage of remaining radioactivity in the reactors becomes possible..."
 
Re: check out this diesel engine *massive*

I want to see the machine that made that crank shaft!
 
Re: check out this diesel engine *massive*

Would have to be a pretty beefy lathe to deal with a 300 ton crankshaft.
 
Re: check out this diesel engine *massive*

[ QUOTE ]
lambda said:
I want to see the machine that made that crank shaft!



[/ QUOTE ]

That's exactly what I said to my backdoor neighbor yesterday, when we were discussing this behemoth ( he's an independent trucker ). Now he's thinking about an upgrade. /ubbthreads/images/graemlins/eek.gif /ubbthreads/images/graemlins/icon15.gif /ubbthreads/images/graemlins/wink.gif

Dan
 
Re: check out this diesel engine *massive*

My dad worked at a company that made interesting things like icebreakers, etc., and their biggest lathe had something like a 160 foot maximum length, and it was used for turning and trueing prop shafts. It wasn't the size that so much boggled my mind, but the precision. If something that size is only off a few thousandth's, the amount of mass that is off-center exerts a tremendous amount of force at speed.

T_sig6.gif
 
Re: check out this diesel engine *massive*

What an amazing thing! My eyes keep wanting to scream "Photoshop!" but I guess we're seeing actualy product. AMAZING. Machinery on this kind of scale has always fascinated me.
 
Re: check out this diesel engine *massive*

It makes me wonder, how small can a diesel engine be. I know it is a stupid question, but could it be so small so that we can carry it around to power a flashlight? /ubbthreads/images/graemlins/wink.gif
 
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