MBTA's MPI HSP-46 Locomotives

[daylight4449]

Just to add on to what 1118 wrote, the P&W booted MPI and the T out of their Worcester shops many months ago

Probably was causing problems for their own engines accomodating so many HSPs

I drive by their shop a number of times a week... The HSPs owned the joint. They had room out front for their stuff, but not much else...

[Backshophoss]

The prime movers and inverters were supplied by GE,if the problem is in the Inverters,
that's GE's problem,some of GE's vendors/suppliers have had quality control issues in the past
(remember all the turbocharger failures GE had )

[MBTA F40PH-2C 1050]

The 2039 went belly up yesterday on #1073 at BLACKROCK INT.

[GP40MC1118]

It's up to a reported six units now....two in Erie, two in Rochester, this one and the 2024.

D

[GP40MC1118]

2034 was back from Erie the other week and promptly sent to Rochester.

2004 still out to Erie

2017 was sent to Rochester Saturday

D

[The ViRoCo]

Mass Coastal brought 2034 back to the MBTA in Middleboro on Monday.

[GP40MC1118]

The extra also brought down the 2013.

D

[BandA]

Is there supposed to be visible smoke in the exhaust of a Tier-III locomotive?

[DutchRailnut]

visible smoke has nothing to do with it.

[Bramdeisroberts]

Is there supposed to be visible smoke in the exhaust of a Tier-III locomotive?

It depends on whether Tier III regulations care about particulates.

From what gather, the Tier-X requirements focus more on greenhouse gas emissions than particulate outputs.

[MEC407]

There is definitely a particulate component in the regulations, but to answer the original question, yes, you will certainly see some occasional smoke from Tier 3 locomotives from time to time. EMD and GE alike.

[Bramdeisroberts]

Oh I'm sure there is, I'm guessing that it's simply nowhere near as stringent as the regs for new on-road diesels are.

I can only imagine the blowback from a loco going dead mid-trip because the prime mover had to do another re-gen cycle on the particulate filter.

[GP40MC1118]

MBTX HSP46 2004 is out of GE/Erie and in Buffalo on Q260-14

[NaugyRR]

Oh I'm sure there is, I'm guessing that it's simply nowhere near as stringent as the regs for new on-road diesels are.

I can only imagine the blowback from a loco going dead mid-trip because the prime mover had to do another re-gen cycle on the particulate filter.

How would the locomotive die from going into re-gen? I'm curious because the Tier-4 tractors and skid-steers I work with can be operated normally during their re-gen. They will usually announce that they are in their cycle through an idiot light on the instrument panel or a message on the display, but typically operating the unit through the cycle is encouraged. In fact, stopping or shutting down the unit during re-gen is advised against.

Do locomotives bypass the generator and axle motors during re-gen? That's the only way I could see a locomotive getting K.I.A. during re-gen. On the ag equipment, the exhaust gasses need to get HOT for the EGR/afterburner to be effective in purging the particulate filter, I can't imagine a locomotive prime mover being too different.

[GP40MC1118]

2004 out of Selkirk Sunday night on Q436

d