Quote:
Originally Posted by Dave R
Those must be the 1600 HP variants. They trade HP for longevity.
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Speaking of variants, I was looking at the Caterpillar engine brochure upthread
http://marine.cat.com/cda/files/9627...ngine.pdf?mode and see that they go from 660 hp all the way to 1300 hp, holding RPMs constant at 1800, then up to 1600 hp @ 2300 RPM. This, all on the same displacement, with twin turbochargers?
Either the engines at the lower end, such as the 660s or the 750s in the Mount are going to last forever, or the 1600 hp units are really being pushed
hard.
Question to those with experience with larger diesels such as these: Would the lubrication systems, internal parts such as pistons etc. be the same, or would things like the alloys used for identical-looking parts be different? Is the main difference simply in the injectors, turbo dump gates, and engine controls, plus a beefed up component list better able to take the heat and pressure or is it simply all done via engine controls and injection and turbo settings?
The Enterprise units did about 615 hp on something like 7 times the displacement of these new engines, though the former didn't have turbos I gather. That comparison, plus the differences in the C32 family itself, make for quite a range of power per unit displacement variations!