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Western Railroad Discussion > First EMD Tier 4 locomotive


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Date: 08/27/11 22:52
First EMD Tier 4 locomotive
Author: SOO6617

It has been reported that EMD's first Tier 4 locomotive is heading to Minneapolis for RSI Show. The locomotive is currently tarped but should be visible once it reaches Minneapolis and the show starts.



Date: 08/27/11 23:56
Re: First EMD Tier 4 locomotive
Author: texaswestern70mac

6 axle? 4 axle? switcher? passenger? emd's catalog with cat will have a full range of engines for the first time since the mid 1970's. any clue as to what it may be?

Will Hemb
Flower Mound, TX



Date: 08/28/11 00:07
Re: First EMD Tier 4 locomotive
Author: Fizzboy7

Someone at LocoNotes shared a pic of a tarped 6-axle unit numbered 2012. Only thing visible were dark blue ditchlight housings. I wonder if this the same thing?



Date: 08/28/11 00:55
Re: First EMD Tier 4 locomotive
Author: msdgbar

Sounds interesting.We railfans may have something new to see from CAT/EMD for a change.As soon as anyone can get some pictures please post them.The GEs are really getting to be very stale bread out there.Hopefully a new era in good looking locomotives is upon us.



Date: 08/28/11 00:58
Re: First EMD Tier 4 locomotive
Author: Fizzboy7

msdgbar Wrote:
-------------------------------------------------------
> Sounds interesting.We railfans may have something
> new to see from CAT/EMD for a change.As soon as
> anyone can get some pictures please post them.The
> GEs are really getting to be very stale bread out
> there.Hopefully a new era in good looking
> locomotives is upon us.


True enough! I think back to the 70's when things were popping like crazy from EMD and GE.



Date: 08/28/11 01:14
Re: First EMD Tier 4 locomotive
Author: UPTRAIN

It has a black underframe and silver trucks--I like it already. Ditto to the blue ditch lights. White (maybe silver) end handrails also. Photo of it on RRPictureArchives.Net

Pump



Edited 1 time(s). Last edit at 08/28/11 01:19 by UPTRAIN.



Date: 08/28/11 01:18
Re: First EMD Tier 4 locomotive
Author: Fizzboy7

If links are allowed here, here it is...

http://www.rrpicturearchives.net/showPicture.aspx?id=2696702



Date: 08/28/11 01:54
Re: First EMD Tier 4 locomotive
Author: Jaanfo

Looks like an SD70ACe...



Date: 08/28/11 06:22
Re: First EMD Tier 4 locomotive
Author: SOO6617

Jaanfo Wrote:
-------------------------------------------------------
> Looks like an SD70ACe...

I would expect it to be based on the SD70ACe, although EMD might change the model designation with the debut of Tier 4. It will bring more changes than Tier 3.



Date: 08/28/11 09:14
Re: First EMD Tier 4 locomotive
Author: peoriarr1

Its an aceish with new motor. Will prob sound like the ns motors with cat power a little quiet and more like a loud construction tractor at speed.



Date: 08/28/11 09:57
Re: First EMD Tier 4 locomotive
Author: SOO6617

peoriarr1 Wrote:
-------------------------------------------------------
> Its an aceish with new motor. Will prob sound like
> the ns motors with cat power a little quiet and
> more like a loud construction tractor at speed.

Why would a EMD 710 2-stroke sound like the NS Cat-powered 4-strokes?



Date: 08/28/11 10:00
Re: First EMD Tier 4 locomotive
Author: SCL1517

I'll be extremely surprised if it is in any way more esthetically pleasing. If there is a diesel particulate filter, that's probably yet another "box" somewhere on the carbody. On the other hand, NS's latest PR43C showed up with a very nice looking cab design, and I'd assume that would have to be in the same Progress/Cat/EMD toolbox.



Date: 08/28/11 11:15
Re: First EMD Tier 4 locomotive
Author: QU25C

SOO6617 Wrote:
-------------------------------------------------------
> peoriarr1 Wrote:
> --------------------------------------------------
> -----
> > Its an aceish with new motor. Will prob sound
> like
> > the ns motors with cat power a little quiet and
> > more like a loud construction tractor at speed.
>
> Why would a EMD 710 2-stroke sound like the NS
> Cat-powered 4-strokes?


Why would it have to be a 710?



Date: 08/28/11 13:51
Re: First EMD Tier 4 locomotive
Author: nwkrailfan

The 710 is basically Tier 4 compliant I believe, somebody feel free to correct me, but I remember reading little if any modifications need to be made to get it Tier 4 compliant.



Date: 08/28/11 16:24
Re: First EMD Tier 4 locomotive
Author: SD45X

They are just doing the EGR trick to make it meet 4, I read.



Date: 08/28/11 18:25
Re: First EMD Tier 4 locomotive
Author: bnsfsd70

SD45X Wrote:
-------------------------------------------------------
> They are just doing the EGR trick to make it meet
> 4, I read.


EGR?

- Jeff



Date: 08/28/11 19:06
Re: First EMD Tier 4 locomotive
Author: filmteknik

Exhaust gas recirculation. IIRC it lowers combustion temperature and reduces NOx creation.



Date: 08/28/11 23:51
Re: First EMD Tier 4 locomotive
Author: SBC_1344

EGR like in an automobile EGR valve?



Date: 08/29/11 00:40
Re: First EMD Tier 4 locomotive
Author: AfroRon

SBC_1344 Wrote:
-------------------------------------------------------
> EGR like in an automobile EGR valve?


Kinda, diesels require a EGR cooler to cool the exhaust gasses before being fed back in the intake.

This is a common and expensive source of failure on many of today's road going diesel engines.

It's expected that variable valve timing being tested by Cummins, Daimler and GM (not jointly, all on there own) will make EGR a thing of the past on road going diesel engines.

There are a lot of rumors floating around on just how EMD plans on meeting Tier 4, I've never seen or heard of a EGR system being used on something this big, but I guess there is a first for everything.



Date: 08/29/11 13:36
Re: First EMD Tier 4 locomotive
Author: atsfm177

Cool. The boss keeps making noise about me not going to AREMA/REMSA this year, but so far I'm still there. I'll do my best to post some photos.

Do you think it's tarped to keep the paint job a surprise or just to keep it clean and graffiti free?

Greg

Greg Ramsey
Oxnard, CA



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