Western Railroad Discussion > UP GP38-3 modified

Here is GP38-3 Y1000 at Roseville for the last 10 days or so....There are 10 of these units coming to the Roseville pool to be used in yard and local service  in the area...

---

Interesting looking, what's under the hood?

Posted from Android

It is interesting, wonder what it had been in a previous life.

Looks like a longer frame than a GP38, dash two trucks, short fuel tank and a DEF tank to make Tier IV?

TCnR Wrote:
-------------------------------------------------------
> It is interesting, wonder what it had been in a
> previous life.
>
> Looks like a longer frame than a GP38, dash two
> trucks, short fuel tank and a DEF tank to make
> Tier IV?

Just going by the number of handrail stanchions, looks like the regular GP38 frame to me.

Will it stay running? Will it pull anything?

Was at Roseville yesterday and rounhouse guy told me they have Cat engines in them.

Barstool Wrote:
-------------------------------------------------------
> Here is GP38-3 Y1000 at Roseville for the last 10
> days or so....There are 10 of these units coming
> to the Roseville pool to be used in yard and local
> service  in the area...



not a GP38-3, model designation is EMD24B which I believe UP is classing as GP22T4. Core units are 10 GP38-2’s. The rebuilt/repowered units are powered by Tier 4 compliant CAT 3512 prime movers and use urea. The conversions are done by Progress Rail in Patterson,GA.

Bryan Jones
Brooks, KY
Bryan's Train Photos

https://www.progressrail.com/en/Company/newsandevents/corporatepressreleases/EmissionsTestingEMD24B.html

3000 hour test done at Pacific Harbor Lines.

Posted from Android

Good looking unit.  Since end-cab switchers are being phased out, this will be nice to keep the appaerance of standard cab units around.
Brian Stevens

Good link, it says:

"The EMD24B utilizes rebuilt EMD-style locomotive components, and has been constructed with a remanufactured underframe and cab from an existing EMD GP-40 locomotive."

ActionMike Wrote:
-------------------------------------------------------
> https://www.progressrail.com/en/Company/newsandeve
> nts/corporatepressreleases/EmissionsTestingEMD24B.
> html
>
> 3000 hour test done at Pacific Harbor Lines.
>
> Posted from Android

GP22 to the UP.

UPY 1000 was formerly UP 635, a GP38-2. It is the first of 10 done and has been in Roseville for about a month. The other 9 are still at Progress Rail in Patterson, GA.

Here are a couple of crappy cell phone pictures of it in Roseville on 10/22/18 a few days after it arrived.



Edited 2 time(s). Last edit at 11/14/18 09:49 by ble692.

---

---

The 3512 didn't fare well before, hopefully this group does better, though the TC&W units are still running
albeit with much more care than the UP will provide.

Out

Put them in helper service on Donner Pass.  That'll test them.   See how they do.

Small radiator grills, but otherwise good looking.

Keep that DEF tank filled!!  These new engines shut down when the DEF fluid gets too low.

Define your terms. What is DEF?
 

CM1 Wrote:
-------------------------------------------------------
> Define your terms. What is DEF?
>  

Diesel Exhaust Fluid, or basically urea.

Diesel Exhaust Fluid = from Wikipedia.Diesel engines can be run with a lean burn air-to-fuel ratio (overstoichiometric ratio), to ensure the full combustion of soot and to prevent them exhausting unburnt fuel. The excess of air necessarily leads to generation of nitrogen oxides (NO
=11.2px=inheritx), which are harmful pollutants, from the nitrogen in the air. Selective catalytic reduction is used to reduce the amount of NO
=11.2px=inheritx released into the atmosphere. Diesel exhaust fluid (DEF) from a separate tank is injected into the exhaust pipeline, where the aqueous urea vaporizes and decomposes to form ammonia and carbon dioxide. Within the SCR catalyst, the NO
=11.2px=inheritx are catalytically reduced by the ammonia (NH <phorum break> =11.2px=inherit3) into water ( H2O) and nitrogen (N
=11.2px=inherit2), which are both harmless; and these are then released through the exhaust.[5]DEF is a 32.5% solution of urea, (NH
=11.2px=inherit2)
=11.2px=inherit2CO. When it is injected into the hot exhaust gas stream, the water evaporates and the urea thermally decomposes to form ammonia and isocyanic acid: