Siemens & Cummins partner to build new Tier 4 diesel locos

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Re: Siemens & Cummins partner to build new Tier 4 diesel loc

Postby MEC407 » Sat Mar 22, 2014 11:48 am

This article states "109 tonnes":

http://www.railwaygazette.com/news/trac ... lised.html

109 tonnes does translate to approximately 120 short tons of 240,000 pounds.
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Re: Siemens & Cummins partner to build new Tier 4 diesel loc

Postby Allen Hazen » Sun Oct 05, 2014 5:39 pm

Well, 109 ton(ne)s seems to have slipped: the data on the press release Fan Railer just linked to says 120 metric tons: 264,000 pounds. Still (as I said a while back) better than recent MPI offerings.
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Re: Siemens & Cummins partner to build new Tier 4 diesel loc

Postby Fan Railer » Mon Oct 06, 2014 4:44 pm

Allen Hazen wrote:Well, 109 ton(ne)s seems to have slipped: the data on the press release Fan Railer just linked to says 120 metric tons: 264,000 pounds. Still (as I said a while back) better than recent MPI offerings.

I think the originally released weight was just mis-interpreted by the media sources. Siemens was never specific as to which type of "ton" they were using in the original press release, so it's not that far of a stretch to presume this. After all, 3rd party media is almost always wrong at first when reporting railroad-type news.
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Re: Siemens & Cummins partner to build new Tier 4 diesel loc

Postby Allen Hazen » Mon Oct 06, 2014 5:52 pm

Fan railer--
Much as media report every fossil as a "dinosaur," every airplane as a "jet," and every naval vessel larger than a rowboat as a "battleship"! I think you are quite likely right: perhaps (scenario) somebody as Siemens said "120 ton(ne)s" (parenthesized bit not being pronounced, a report thought "This is for a U.S. customer, so that must be American tons," and converted back into metric to get 109.

120 metric tonnes is not a RIDICULOUS weight. It's about what a typical 4-axle freight locomotive of the 1960s would have weighed (GP-40 or the like). Still, for a high-speed passenger unit I'd want to shave the ounces. British Rail managed a 3300 hp locomotive at about 100 tons at the end of the 1950s (the Deltic) and a 2250 hp locomotive at under 70 tons in the 1970s (HST "power car"): surely modern diesel engine technology would allow a passenger locomotive weighing less than 120!
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Re: Siemens & Cummins partner to build new Tier 4 diesel loc

Postby MEC407 » Tue Jan 27, 2015 10:14 am

The Cummins-[re]powered Tier 4 freight locomotive for INRD has been completed.

Photo by pdxrailfan:

http://pdxrailfan.tumblr.com/post/109013147901
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Re: Siemens & Cummins partner to build new Tier 4 diesel loc

Postby Backshophoss » Tue Jan 27, 2015 5:20 pm

Whats buried in that extended Dynamic Brake blister?,there's no grid vents in the blister.
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Re: Siemens & Cummins partner to build new Tier 4 diesel loc

Postby MEC407 » Wed Jan 28, 2015 9:14 am

Good question. Hopefully someone will get a nice roof shot at some point.
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Re: Siemens & Cummins partner to build new Tier 4 diesel loc

Postby 161pw165 » Wed Jan 28, 2015 1:59 pm

Does this have urea after-treatment? If so, maybe it is housed in that area.
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Re: Siemens & Cummins partner to build new Tier 4 diesel loc

Postby MEC407 » Wed Jan 28, 2015 2:31 pm

161pw165 wrote:Does this have urea after-treatment?


Yes.

More info here: http://www.railwayage.com/index.php/mec ... tomer.html
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Re: Siemens & Cummins partner to build new Tier 4 diesel loc

Postby MEC407 » Sun Feb 01, 2015 10:25 am

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Re: Siemens & Cummins partner to build new Tier 4 diesel loc

Postby Allen Hazen » Sun Feb 01, 2015 6:52 pm

First generation diesels tended to have lots of air vents in the carbody. The introduction of the U25B with its centralized air system (I know, Baldwin had central air on road switchers built for North Africa back in the 1940s, but the idea didn't catch on for general application at the time) ended this: The GP-30 and Alco's "Century" series imitated GE on this feature.

So why does it look as if there are a dozen louvred vents along the side, in the engine compartment doors, on this critter?
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Re: Siemens & Cummins partner to build new Tier 4 diesel loc

Postby MEC407 » Sun Feb 01, 2015 7:00 pm

I guess they felt it was more important to keep their shiny red prime mover cool than to keep it shiny. :wink:
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Re: Siemens & Cummins partner to build new Tier 4 diesel loc

Postby Backshophoss » Mon Feb 02, 2015 7:49 pm

Any kind of exhaust treatment will create heat,might be the reason for all the vents,
there will be air filters mounted on the doors on the inside attempting to keep to engine area clean.
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Re: Siemens & Cummins partner to build new Tier 4 diesel loc

Postby Allen Hazen » Mon Feb 02, 2015 9:08 pm

Backshophoss--
I would assume so! But then, even first generation units often had filters of one sort or another behind their carbody louvers. Changing the filters every -- well, BN had to change locomotive air filters daily when Mt St Helens erupted; I assume normally the change is at regular intervals somewhat longer than that! -- is a labor intensive operation. Wouldn't a designer TRY to avoid that?
Mec407--
You mean keeping cool is more important than looking cool? (Grin!)
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