So what is SCR technology?
It’s a sort of “catalytic converter” for diesel engines.
FAQS - info link to include DEF (diesel exhaust fluid)
John Deere Power systems magazine - Marine edition Spring 2016
http://www.deere.com/en_US/docs/html/brochures/publication.html?id=6ebdd268#1
Wärtsilä welcomes student training ship from State University of New York Maritime College
http://www.wartsila.com/media/news/17-06-2016-wartsila-welcomes-student-training-ship-from-state-university-of-new-york-maritime-college
[QUOTE=DeepSeaDiver;186332]So what is SCR technology?
//youtu.be/TCedKhmm-80
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Have you seen how huge the dosing cabinet is? Not to mention the Urea tank, pump, and SCR module? There won’t be any overhead space in your engine room with this Tier 4 solution.
SCR = Selective Catalytic Reduction. Its just a glorified emissions system that injects Urea into your exhaust system. The ammonia in the DEF is supposed to reduce NOx levels of emissions, in an effort to reach emissions standards set in place since 2010.
http://intermountainelectronics.com/uploads/media/Media_633929646982817973.pdf
I’ve used these before with good results. Had some issues but saw major reductions in NOx and other gases.
[QUOTE=Kingrobby;186470]http://intermountainelectronics.com/uploads/media/Media_633929646982817973.pdf
I’ve used these before with good results. Had some issues but saw major reductions in NOx and other gases.[/QUOTE]
I’ve never played with any systems aboard a ship, but in my experience with trucks and semi’s is: when it works, it works great. When it doesn’t, it’ll bring a truck to its knees, and de-rate the absolute shit out of it. I personally wont run it in my own vehicles.
And me in my offshore mind thinking that it is a Silicon Controlled Rectifier Drive. . . and wondering how diesel electric will have a real effect on emissions. . . .
[QUOTE=DeepSeaDiver;186397]Wärtsilä welcomes student training ship from State University of New York Maritime College
http://www.wartsila.com/media/news/17-06-2016-wartsila-welcomes-student-training-ship-from-state-university-of-new-york-maritime-college
[/QUOTE]
Little bit jealous. But at my school we have some very nice Wartsila posters on the walls on the engineering “deck.” So. You know. Same thing.
[QUOTE=cmakin;186506]And me in my offshore mind thinking that it is a Silicon Controlled Rectifier Drive. . . and wondering how diesel electric will have a real effect on emissions. . . .[/QUOTE]
That is probably the first thought of anyone who has worked on diesel-electric ships. 
[QUOTE=catherder;186603]That is probably the first thought of anyone who has worked on diesel-electric ships. [/QUOTE]
I am old enough to have sailed on a ship that had DC generators for all but Hotel Load. . . SCR? WTF? Get them stones out. . . .
[QUOTE=cmakin;186627]I am old enough to have sailed on a ship that had DC generators for all but Hotel Load. . . SCR? WTF? Get them stones out. . . .[/QUOTE]
I kind of miss the DC power days. Now a days guys bitch about not having Wi-Fi, hell back on those vessels you were lucky to have a fan that worked and if it Oscillated you were living the high life. As for stones, I think I still have some of the blasted dust imbedded in my skin.
[QUOTE=Tugs;186632]I kind of miss the DC power days. Now a days guys bitch about not having Wi-Fi, hell back on those vessels you were lucky to have a fan that worked and if it Oscillated you were living the high life. As for stones, I think I still have some of the blasted dust imbedded in my skin.[/QUOTE]
Oh you just sent me back in time. One of my first jobs (fill in) was on a tug with DC plant with a (partially) live front switch board. Every now and then had to flash the field of one of the generators. Lift brushes, open and close knife switch to field coils by hand. Felt like Dr. Frankenstein.
[QUOTE=KPChief;186633]Oh you just sent me back in time. One of my first jobs (fill in) was on a tug with DC plant with a (partially) live front switch board. Every now and then had to flash the field of one of the generators. Lift brushes, open and close knife switch to field coils by hand. Felt like Dr. Frankenstein.[/QUOTE]
I guess “intrinsically safe” doesn’t mean what it used to.
[QUOTE=Emrobu;186804]I guess “intrinsically safe” doesn’t mean what it used to.[/QUOTE]
Not many things intrinsically safe on some of those old steamers. . . and that is okay. . .
[QUOTE=cmakin;186819]Not many things intrinsically safe on some of those old steamers. . . and that is okay. . .[/QUOTE]
I volunteer as engine crew on SS Master (1922). She’s of an age when she has so few electrical systems (the steam genny isn’t used) that she must be considered intrinsically safe. Golly, that might be a selling point: save our old tug: the safest way to guide your tanker in to Burnaby Refinery. Port of Portland ran their steam tug until 1981.