Sunday, November 15, 2015

Big Marine Diesels

(Update: machmachine blog)

This is the second time I've come across information on big marine diesels while researching another topic. This time I'm going to record some of what I found because I think the big diesels are fascinating.

Screenshot from video
A History channel video talks about an engine that is 40-feet high, 65-feet long and the bore is 3 feet with a 10-foot stroke. The crankshaft weighs 100 tons. The engine is over 2000 tons and is 10% of the ships weight. It sounds like just one 11-cylinder version of this engine powers a container ship that is so big it can't use the Panama canal. And the ship is fast.


Screenshot from making a Cat marine engine video
Screenshot from video of making the world's most powerful
Wartsila's web page for these engines

I don't watch cat videos. But I can get suckered into watching videos of big machines. I found these two videos on You Tube's sidebar for the above video. And of course there are several more videos on this topic.

Note in the bottom screenshot that the crankshaft is taller then the men on the platform.

And this video answered my question of how is a crankshaft made. The answer is that it is machined from a cylinder of steel that is as wide as the flywheel on the end. That is, a lot of metal is removed. I wonder when they will learn how to make these with 3D printing.

I'm also noting that most of these plants are in Europe. I wonder why.

Update:

John W. Coke posted two photos with the comment:
Warsila-Sulzer RTA96-C has a total of 107,389 horsepower and it provides power for some of the largest sea vessels on the planet. It features a two-stroke turbo that runs on heavy fuel and is a total of 89 ft. long and 44 ft. wide.
1

2




Jason Jordon shared
The bigger the engine, the bigger the booboo. This gives new meaning to a "bent rod." It looks like it broke off part of the crankshaft as well.



Video of Caterpillar engine production in Lafayette, IN.


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