EMD SD90MAC-H Phase II or SD70ACe-T4? The SD70ACe-T4 is the Tier 4 emissions standards-compliant version of the SD70ACe. The first locomotive, EMDX 1501, was built in summer 2015, and made its debut at the Railway Interchange Expo in Minneapolis, Minnesota during the weekend of October 3–4, 2015. It features a new 4-stroke engine called the EMD 12-1010 "J" series - a V12 with 1010 cu.in displacement for each cylinder. This new prime mover has a two-stage turbocharger system consisting of three turbos; one turbo (the primary/high pressure turbo) for low-mid RPM and two turbos (the secondary/low pressure turbos) for mid-high RPM. The results of this setup are higher power throughout a broader RPM range, better fuel efficiency, and lower emissions. An EGR system is applied as well, allowing the engine to achieve Tier 4 without the use of urea aftertreatment. Another new feature of this engine is the Double-Walled Fuel Injection System that increases safety and provides simplified maintenance works.
The EMD 12-1010 is capable of producing 4,600 hp, but only 4,400 tractive horsepower.[15] With a new computer software for the on-board computer and one inverter per axle (or "P6"; EMD named it "Individual Axle Control") - unlike most of previous EMD locomotives that use one inverter per truck, the SD70ACe-T4 is capable of generating 200,000 lbf. (889.64 kN.) of starting tractive effort, and 175,000 lbf. (778.75 kN.) of continuous tractive effort. Meanwhile, its dynamic braking effort is as much as 105,000 lbf. (467.25 kN.) The amount of starting tractive effort is equal to that of the 6,000 hp SD90MAC-H while, on the other hand, its continuous tractive effort is higher than that of the SD90MAC-H (175,000 lbf. vs. 165,000 lbf.). The units are also equipped with "radial bogies" which offer increased adhesion and better ride quality.
While it retains the basic SD70 designation, the locomotive has several major new features that set it apart from its successful ancestor such as a vibration-isolated powertrain, and alternator start capability. In addition, it features a newly redesigned cab reminiscent of the earlier SD70M, featuring the classic "teardrop" windshields first introduced on the FP45 in December 1967; new fabricated trucks; a longer frame (76 ft. 8 in / 23.37 m); longer radiators with three radiator fans instead of two; an additional step on the front and rear; and a smoother long hood roofline.
Fifteen SD70ACe-T4 demonstrators were built at Muncie, IN by November 2016. Union Pacific Railroad is the first customer to order SD70ACe-T4's. UP 3012-3014, the first production SD70ACe-T4's, were assigned to active service in early November 2016.
Union Pacific will acquire 100 SD70ACe-T4's: 12 former demonstrators will be rostered as UP 3000-3011, and 88 production units (3012-3099). 3012-3056 were built at Bombardier's Sahagun, Mexico plant. 3057-3099 will be built at Muncie, IN, following completion of the Tier 4 credit SD70ACe's UP 8997-9096. All UP SD70ACe-T4's are classified as SD70AHs.
EMDX 1501 will remain in Progress Rail Services ownership as a test bed.
SD70ACeP4-T4's EMDX 1603 and 1604 were built and painted as demonstrators for the BNSF Railway. These units have a B1-1B wheel arrangement akin to the SD70ACe-P4.
In August 2018, CSX Transportation ordered 10 SD70ACe-T4's, of which all have now been delivered. They are classified by CSX as ST70AH.
Norfolk Southern initially also ordered 10 SD70ACe-T4's, but later cancelled the order, instead opting for more SD70ACe Tier-4 credit locomotives.
Text is available under the Creative Commons Attribution-ShareAlike License
Locomotives:
EMD SD70ACE T4
SD70ACeP4-T4
EMD ST70AH
SD90MAC-H Phase II
While not exactly the same, The EMD 12-1010J prime mover sounds very much like the EMD GM16V265H used in the SD90MAC-H Phase II locomotives. While the prime mover has been discontinued and mostly scrapped in the US there are a few operating examples in China and Australia. Hopefully someday a true recording can be acquired but for now this is quite close!
As no models have been created for the SD70ACe T4 at the time of this file release we have set up the function mapping and horn and bell sounds to work with the Athearn SD90MAC-H Phase II locomotives.
Recorded from an EMD SD70ACE T4
File also contains an "Isolation Switch" Mode on F15 when Standing Still.
Pressing F15 while not moving will lower the prime mover to a "Low Idle" and lock the motor. F15 must be turned off to begin moving.
Another Mode is "Reverser In Center Position". When pressing F24 while stopped, the motor will lock so you can throttle through the notches like the prototype in neutral. F24 must be turned off to begin moving.
This project has "Run 8" mode. When turning on F26 with F28 off, the prime mover goes to run 8. Turning off F26 returns the prime mover sounds back to normal mode.
This project has "Coast" mode. When turning on F27 with F28 off, the prime mover goes to idle for coasting purposes. Turning off F27 returns the prime mover sounds back to normal mode.
You can still use F26 and F27 for manual nothing. You have to keep both F26 and F27 off before pressing F28 to turn on manual notching. Once F28 is on, you can use F26 to notch up and F27 to notch down. F26, F27, and F28 must be turned off to return to normal mode.
This file is also equipped with a Smart Start feature that cycles the prime mover on and off at intervals of your choice if the throttle is left at Idle and the loco is stopped.
Smart Start (Sound CV14):
CV168=0 No Smart Start Cycle - Default
CV168=1 - 3 Minute Cycle
CV168=2 - 6 Minute Cylcle
CV168=3 - 9 Minute Cylcle
CV168=4 - 12 Minute Cylcle
Etc.....
CV168=255 - 765 Minute Cycle
SD70ACE/SD70M-2 Horn Pack
Horns (SoundCV9):
CV163=0 Nathan P5
CV163=1 Nathan K5LA
CV163=2 Nathan M3H
CV163=3 Leslie RS-2M
CV163=4 Nathan K3HA - Default
CV163=5 Nathan K3L
CV163=6 Nathan K3H
CV163=7 Nathan K5H
CV163=8 Nathan P5A
CV163=9 Nathan P5 (Old Cast)
CV163=10 Nathan M3RT1
CV163=11 Leslie S3L
CV163=12 Leslie S5T
CV163=13 Nathan K5LR24
CV163=14 Leslie S5TRF
CV163=15 Nathan K5LLA #1
CV163=15 Nathan K5LLA #2
CV163=15 Nathan K5LLA #3
CV163=15 Nathan K5LLA #4
CV163=15 Nathan K5LLA #5
CV163=15 Nathan K5LLA #6
EMD 3rd Generation Bell Template Pack 2
Bells (SoundCV10):
CV164=0 EMD 8475495 Steel Bell 049
CV164=1 EMD 8475495 Steel Bell 066
CV164=2 EMD 8475495 Steel Bell 068
CV164=3 Graham-White E-Bell 006
CV164=4 Graham-White E-Bell 009
3rd Gereration Brake Squeal Template Pack 1
Brake Squeal (SoundCV11)
CV165=0 Composition Shoe #1
CV166=1 Composition Shoe #2
EMD 3rd Generation Air Dryer Template Pack 1
Air Dryer (SoundCV12)
CV166=0 GP60 Air Dryer 1
CV166=1 SD60E Air Dryer 2
CV166=2 SD70M-2 Air Dryer 3
CV166=3 SD70MAC Air Dryer 4