You guys need a break. So, ya think your PSD is stronger than new rope? Try this little diesel engine on for size. The power is amazing, fuel mileage sucks although it will burn almost straight crude oil instead of refined diesel. Has two oil systems- one for the pistons and one for the crank. Not sure how you get a truck body around it though.
http://www.bath.ac.uk/~ccsshb/12cyl/

Note the ultra high RPMs. Note the size of the stroke. Now this is an engine you can live with......or in. Enjoy!

 

I have seen that before. It is a beast.
I do like the idea of the a long piston rod and crosshead though. Saves the block from the excessive side loads on the piston, and ovaling of the combustion chamber.

 

I have seen that a few times, I was very impressed by its thermal efficiency the first time I read it. Anyone know what the average truck or car diesel will be like for efficiency? Also fascinating that is is a 2-stroke instead of 4 and it makes 220 lb-ft of torque per liter of displacement. Would be interesting to hear it running.

 

I've never found info on how they start that monster. My Cat D4 has a 2-cylinder gasoline starting engine. Does anybody know what they use for the Wartsila?

 

The average diesel is around 35% thermal efficient. Gassers around 30%.

50% is HUGE.

I reckon they use a couple of PSD's just to turn it over.

 

Um, yeah, those are something, aren't they?

Last time I looked over something even remotely that huge, it was the MAN B&W I6 from the Selendang Ayu tanker that snapped in half off of the Aleutian Islands in late 2003, I believe. (Google that, scary stuff.....)

Hey, you try pulling out a 3-ton cylinder liner from a 35-40 foot tall engine in an Alaskan Gulf winter! I'd wave the white flag and ground the tanker, too.

I sure would like to tour one of those engine plants, too.

 

5.6milllion lbs of torque , damn, i wish i could get that in a psd .

The 2stroke diseal is nothing new, detroits diseals have been this way for ever.

 

take a look in the picture it looks like a 250 hp electirc gear reduction starter.

 

Never thought about that advantage of a crosshead system.

The crosshead is also there to isolate the crankcase from the cylinders. This could be to simplify induction issues, to isolate crankcase lube oil from cylinder lube oil, or both. I have seen the crosshead setup on (much, much smaller) industrial 2 stroke engines. By isolating the crankcase from the cylinder they don't have to pressure up the crankcase like on small 2 strokes to get the air/fuel mixture through the ports into the cylinder.

Now for the next big question:

Does anybody have pic's of the machining equipment used to build these monsters. Just how big is the swing on the lathe that crank was built on...

Sheesh!