Chouest exhaust

[coldduck]

We've been doing a lot of standing-by in Fourchon lately, and I've noticed that the newer 2280's seem to black smoke way more than the older vessels. What's causing this; different mains, filters, fuel, injectors? I work in the wheelhouse so this definitely is not my territory, just curious.

[brjones]

I am not familiar with the actual engines you are using, but black smoke is an indication of incomplete combustion. There are numerous things that can cause it. Timing, injectors, turbocharger...just to name a few. You either have too much fuel or not enough air on your air/ fuel mixture

[Fraqrat]

I believe they are equipped with Cat C-280-8 engines. They may need to have the guy come down with his laptop and make some adjustments.

[injunear]

I'd bet on too much time at idle...

[Fraqrat]

We have the same engines and in the winter time of we have to run wx patterns that's what happens to us. It usually blows right out and clears up after they've been at full rev for a few minutes. With all these fancy electronicals on these engines nowadays sometimes you gotta tweak the magic box.

[BMCSRetired]

I would bet a diesel Electric drive-train with the GENSETS running high end most of the time with no load instead of of setting them low and having them rev up automatically when needed. That was one of the drawbacks of diesel-electrics when I ran one, if you run them high end/no load the stacks tend to load up and catch on fire at annoying times like going from idle to full power too quickly. Another problem is running them low idle and when needing more power quickly, bogging the engine down or tripping the electric motor offline which is no fun either.

I figured by now the computers would have caught up and eliminated these two issues...

[Low_Tide]

I would bet a diesel Electric drive-train with the GENSETS running high end most of the time with no load instead of of setting them low and having them rev up automatically when needed. That was one of the drawbacks of diesel-electrics when I ran one, if you run them high end/no load the stacks tend to load up and catch on fire at annoying times like going from idle to full power too quickly. Another problem is running them low idle and when needing more power quickly, bogging the engine down or tripping the electric motor offline which is no fun either.I figured by now the computers would have caught up and eliminated these two issues...

With respect, I'm not sure I follow. If it is diesel electric, it doesn't matter is there is a load or no load it needs to run at a constant RPM to keep the phase in line. Idle is fine if it's not tied to the bus.