Ship engine exhaust valve cam in action

[23chilled]

thats alot of oil. There is more oil in just one piston there than there is in the sump of my V6

[tolisdrums]

reminds me of sex: slow, wet and lubricated 

[yizzer2]

that is some crazy lift at valve :)

[highdeserthater]

next time some poser thinks their honda is cammed, they need to check this out. lol gotta love the slow running smash your bones diesel raw TORQUE!

[psychotikpaisano]

@highdeserthater

I like your comment!

That single lobe probably weighs as much as a honda!

[highdeserthater]

@psychotikpaisano thats the sad part. lol you could probably crush a couple civics in the crank case too. lol

[perkristian1]

Compared to the vale injector video: It looks like the closing of the exhaust valve is not as fast as the closing of the fuel injector. The returning of the roller guide is slower at the end of the stroke, just before closing of the valve. I just finished my engine cadet period. Not THAT experienced;)

[robinhooodvsyou]

Now THAT is massive....

[phk86]

Is it just because it's dark i can't see the roller guide or does Sulzer use a different setup?

How do you reverse it with this cam profile? Can you slide the cam axial to use another cam or is this for a CCP ship?

[Nickshark1982]

That is allot of Lube!!!!

[SteffanLlwyd]

Fabulous engineering! I've always wanted to go below in a big vessel. Now I know how huge this component is. It is awseome how small human beings with imagination and will can do things on such a grand scale. Of course we are capable of foul behaviour, but somewhow this video honours us at our best. I hope this comment makes some kind of sense.

[djraychel]

let me guess...the engine is running at below 50-70RPM at the time this video is taken? correct me if i'm wrong.

[Nanometer45]

likely, huge ship diesels run at incredibly low rpm

[TestECull]

Those large engines redline at 100RPM or so. They're simply too large to spin any faster.

[vegemiterulz]

Brilliant!

[tuner562]

How big is that!?

[boo66]

That's brilliant. There's enough time to 'read' the cam profile it's all so slow!

The gentle ramp of the cam lobe had me fascinated - it's there on my Honda 50 of course, but not for eyes to see!

[Renatodonadio]

2 stroker fifties are usually camless, so there is no camshaft

[boo66]

2stroke 50s are ALWAYS camless... the Honda's a four stroke though!

(famously so, in fact!)

[enginemasterbuilder]

i would love to see the stone and grinder they use to machine that lobe

[douro20]

I thought these things were camless engines...or is that the RTflex series?

[DieselEngineering]

Its the exhaust cam. The flex engine is common rail so it doesnt have a fuel cam. this isnt a flex engine.

[TheChiefEngineer]

the flex engine has no camshaft. there is a shaft but it drives hydraulic pumps. the fuel injection system and the exhaust valve system are electro-hydraulic. the MAN B&W ME engines have similar arrangments. hope that helps

[kieranlowe1980]

Cool!

[007longbeach]

That is one big tappet!!