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World's largest engine. You gotta see this!

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how many quarts of oil does it take??? also what kind of oil should i use in it???

:D
 
.....hmmmmm....let's see....prolly about 10,000 gallons of Mobil One!

I wonder how many hours between oil changes? I'd also like to see the air filter system for that thing.
 
I found out some more info: There is a guy on the V8 Buick board that works on motors like these.

Well for starters we don't really ever change the oil , the one i am on now holds ... get this 20,000 liters of oil in the sump . we constantly circulate it through a purifier . the purifier is really just a centrifuge that will seperate any solids or water out based on the differences in specific gravity relative to the lubricating oil (any one who is familliar with the dairy industry has seen these ). If you look back at the pics you origionally posted you will see that the piston rides up and down above the crosshead . the crosshead absorbs all the side thrust from the connecting rod allowing the piston rod to travel in a very nearly verticle path. This allows a seal to be lpaced on the piston rod that seals the combustion space from the crankcase thereby keeping the oil surprisingly clean . We usually add about 1000 liters a month to make up for oil lost into the combustion side ,they are designed to leak oil into the comb. space rather than leak combustion residue into the crankcase.
we pull pistons for P.M. about every 10,000 hours we swap in the spare piston and then break down the piston at sea so we can clean the underside where the cooling oil contacts the piston crown . flipping that sucker upside down with a 2.5 meter long piston rod attached while the ship is pitching and rolling can be a little hairy . every time we pull the piston we change rings although they usually are good enough to go again we do it anyway as the cost of the labor to get the piston out excedes the cost of a set of rings . we measure bearing clearance every 15,000 hours and pull them apart for inspection every 2-3 years in the shipyard . our engine has over 60,000 hours on it and is still running the factory bearings.
 
It mentions that is a 2-stroke diesel. If 2S diesels opperate like 2S gas than there is no oil in the crankcase. After reading it a second time I see that it is using that funky double jointed con rod set up so maybe the bottom half is conventional? Imagine if you threw a rod in that thing. It would make the Exxon Valdez look small not to mention it would probally sink the boat from the force.
 
More info................

The really neat thing is the fact that they are 2 stroke engines , the liners have intake ports on the bottom edge . however unlike your standard dirt bike engine they have an exhaust valve. the intake air comes from multiple turbochargers , usually the size of a small buick . i would guess the engine in the original link would run 3 or 4 of them . At the bottom of the power stroke the piston uncovers the ports and the turbo drives air up through the liner and scavenges the spent gas through the valve and into the exhuast pipe (no lost fuel charge ,just how the EPA likes it, you will see this technology on dirt bikes and snowmachines before too long). the valve is then timed to close before the piston starts up so as to pressurize the cylinder before compression starts . valves are opened by a cam driven oil pump acting against an air spring . no springs to wear out , no lash to set . valves can be removed for service independent of the head.
To go astern the engine is stopped and the cam shifted and then the engine is started again running the opposite direction just like some of the newer snowmachines introduced in the last few years. starting is by direct air injection . compressed air at 20 kg/cm (300psi)is directed into cylinders on the power stroke , once the engine reaches a set rpm the fuel is cut in and off she goes . peak engine speed on my ship is around 100 rpm , you can hear individual cylinders fire and exhaust valves open and close definately different than anything you find under the hood of any buick.
 
walk-in

A friend of mine went to SUNY Maritime (It is a State University of New York - military based college, can be seen from the verezzano bridge) He said there are engines so huge you can walk through the crankcase while it is running......If you really wanted to.
 
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