{{Short description|Model of electro-diesel locomotives built by Bombardier Transportation}} {{Infobox locomotive | name = ALP-45DP | powertype = Electro-diesel (dual mode) | image = NJT-AMT ALP-45DP in Kassel Germany.jpg | caption = ALP-45DP locomotives for NJT and AMT in Kassel, Germany | builder = Bombardier Transportation<br/> Alstom | totalproduction = NJT: 72<ref name=gazette-supply /><ref name=gazette-10more/> <br/>Exo: 20<ref name=gazette-supply /> | builddate = 2010–2012<ref>{{cite web | url=https://www.railcolor.net/index.php?nav=1405722&lang=1 | title=NJT ALP-45 Dual Power | access-date=2019-10-05 | work=The European Modern Electric Locomotive Database | publisher=Railcolor.net | archive-date=2019-12-24 | archive-url=https://web.archive.org/web/20191224011545/https://www.railcolor.net/index.php?nav=1405722&lang=1 | url-status=dead }}</ref><br/> 2019–Present | aarwheels = B-B | uicclass = Bo′Bo′ | gauge = {{track gauge|ussg|allk=on}} | bogies = FLEXX Power 250 | wheeldiameter = {{convert|1.118|to|1.046|m|in|abbr=on}} ''new / worn'' | minimumcurve = {{Convert|91|m|ft|2|abbr=on}} | wheelbase = ''bogie'' (''truck'') {{convert|2.8|m|abbr=on}}<br/>''bogie centres'' {{convert|13.25|m|ftin|abbr=on}} | length = {{convert|21.8|m|abbr=on}} ''length over coupler faces'' | width = {{convert|2.95|m|ftin|frac=8|abbr=on}} | height = {{convert|4.4|m|ftin|frac=8|abbr=on}} | axleload = {{convert|32.65|t|lb|abbr=on}} ''max'' | locoweight = {{convert|288,000|lb|t|order=flip|abbr=on}} | fueltype = Diesel | fuelcap = NJT: {{convert|1600|gal|abbr=on}},<br/>Exo: {{convert|1800|gal|abbr=on}} <!-- | headendpower =480 V AC, 60 Hz, 3 phase, 1,000 kW -->| headendpower = 1100 kVA<!-- ??? -->, {{convert|1000|kW|abbr=on}}, 3 phase, 3 x 480 V AC 60 Hz {{sfn|Brugger|Schwendt|Spillman|Vitins|2000|p=561-2}}{{sfn|Vitins|2011|loc= Table 1}} | electricsystem = {{Plainlist| * Overhead line: *{{in5|3}} {{25 kV 60 Hz}} *{{in5|3}} 12 kV 25 Hz AC (NJT only) }} | collectionmethod = pantograph | primemover = 2 × Caterpillar 3512C HD{{sfn|Brugger|Schwendt|Spillman|Vitins|2000|p=561}}{{sfn|Pernička|Kuchta|2010|pp=53, 56}} | rpmrange = 600-1800 | enginetype = V12 diesel | aspiration = Turbocharged | displacement = {{convert|58.6|L|cuin|abbr=on}}<ref name="HD">{{citation| url = http://catoilandgas.cat.com/cda/files/2425722/7/3512C+HD+ATAAC+Spec+Sheet+-LEHW0056-01+P1.pdf| title = 3512C HD Petroleum Engine| work = Cat Oil and Gas| access-date = 2012-07-27| archive-date = 2014-04-08| archive-url = https://web.archive.org/web/20140408223238/http://catoilandgas.cat.com/cda/files/2425722/7/3512C%20HD%20ATAAC%20Spec%20Sheet%20-LEHW0056-01%20P1.pdf| url-status = dead}} Specification sheet for 3512C HD engine from CAT</ref> | alternator = 2 × MITRAC TG 3800A, 1700 kVA {{sfn|Pernička|Kuchta|2010|loc="diesels"|p=56}}<ref>[https://www.bombardier.com/content/dam/Websites/bombardiercom/supporting-documents/BT/Bombardier-Transportation-MITRAC.pdf MITRAC]</ref> | tractionmotors = 4 × MITRAC DR 3700F, {{convert|1300|kW|abbr=on}} each{{sfn|Pernička|Kuchta|2010|p=56}}<ref group="note" name="tmdrive"/> | transmission = AC-DC-AC | multipleworking = Yes, up to 2 units{{sfn|Pernička|Kuchta|2010|p=56|loc = quote : ''Operation in multiple is possible - two locomotives being the maximum, and this is also feasible when the locomotives are operating in pushpull mode. It is also possible for ALP-45DPs to run in multiple with ALP-46(A) and other existing NJT (and Exo) vehicles.''}}{{#tag:ref| Multiple working in dual mode with locomotives of the same class. NJT: Electric mode also with ALP-46, and ALP-44. Diesel mode with NJT PL42AC and GP40.<ref>{{Cite journal|date=2016-07-02|title=Reprint from NJ 1: 1. Editorial and Insert – The Terrigal Conference|url=http://dx.doi.org/10.1080/14452294.2016.1279463|journal=NJ|volume=40|issue=2|pages=160–174|doi=10.1080/14452294.2016.1279463|s2cid=218835187|issn=1445-2294|url-access=subscription}}</ref>|group="note"}} | maxspeed = Diesel mode: {{convert|161|km/h|0|abbr=on}}<br/>Electric mode: {{convert|201|km/h|0|abbr=on}} | poweroutput = Continuous electric at rail: {{convert|5360|hp|abbr=on}}<ref name="atr">{{Cite journal|date=2016-07-02|title=Reprint from NJ 1: 1. Editorial and Insert – The Terrigal Conference|url=http://dx.doi.org/10.1080/14452294.2016.1279463|journal=NJ|volume=40|issue=2|pages=160–174|doi=10.1080/14452294.2016.1279463|s2cid=218835187|issn=1445-2294|url-access=subscription}}</ref><br/>Max electric at rail: {{convert|5900|hp|abbr=on}}{{sfn|Pernička|Kuchta|2010|ps=..For a limited time a maximum power of 4,400 kW can be delivered|p=55}}<br/>Max diesel at rail: {{convert|3600|hp|abbr=on}}<ref name="atr"/> (no HEP)<br/>Max diesel at rail: {{convert|2734|hp|abbr=on}} (With HEP for 8 car train){{sfn|Vitins|2011|loc= Table 1}} <br/> {{convert|1567|kW|abbr=on}} each,<br/> {{convert|3108|kW|abbr=on}} at shaft. inserted | tractiveeffort = {{convert|316|kN|abbr=on}} ''starting''<br/>{{convert|262|kN|abbr=on}} ''continuous electric'' @{{convert|55|km/h|0|abbr=on}}<ref>{{cite web| first=Jean-Marc| last=Allenbach| url=http://documents.epfl.ch/users/a/al/allenbac/www/documents/Fich1109.pdf| title=Fiche documentaire BoBo NJT ALP 45-DP| date=November 11, 2009| language=fr| access-date=June 11, 2011}}</ref><br/>{{convert|291|kN|abbr=on}} ''continuous diesel'' @{{convert|25.2|km/h|0|abbr=on}}{{sfn|Brugger|Schwendt|Spillman|Vitins|2000|p=562}}{{sfn|Vitins|2011|loc= Table 1}} | factorofadhesion = 4.056 | trainheating = Locomotive supplied HEP | locobrakes = Regenerative/Dynamic, WABCO Electro-pneumatic.<br/>Mechanical: hollow shaft mounted disc brake,{{sfn|Pernička|Kuchta|2010|p=56}} plus tread brakes{{sfn|Canetta|Bikle|2010|loc=Bogie, p.6}} | locobrakeforce = {{Unbulleted indent list | Electric regenerative: {{convert|4000|kW|abbr=on}} | Electric dynamic: {{convert|1300|kW|abbr=on}} | Maximum electric brake effort: {{convert|150|kN|abbr=on}} }} | trainbrakes = Pneumatic | coupling = Tightlock coupler | operator = NJ Transit<br/>Exo | fleetnumbers = NJT (45DP): 4500–4534{{sfn|Pernička|Kuchta|2010|p=58}}<br/>NJT (45A): 4535–4559<br/>Exo: 1350–1369{{sfn|Pernička|Kuchta|2010|p=58}} | firstrundate = NJT: May 30, 2012<ref name="firstrun">{{citation| url =http://www.railwayage.com/index.php/passenger/commuter-regional/njts-alp-45dp-enters-revenue-service.html|title = NJT's ALP-45DP enters revenue service| first = William|last = Vantuono| date = 30 May 2012| journal = Railway Age}}</ref> | notes = Sources: <ref name="railvolution06-10">{{harvnb|Pernička|Kuchta|2010|loc= "Principal Technical Data", p.53}}</ref>{{sfn|Canetta|Bikle|2010}} except where noted }}
The '''Bombardier ALP-45DP''' is a type of single cab dual-mode locomotive operated by New Jersey Transit and Exo. The locomotive was designed and originally built by Bombardier until 2021, and by Alstom since 2021.
==Operators==
===New Jersey Transit=== {{update section|date=April 2021}} {{main|NJ Transit}} [[File:ALP-45DP Convent Station.jpg|thumb|left|NJ Transit ALP-45DP #4513 at Convent Station]] New Jersey Transit (NJT) purchased 26 ALP-45DPs in 2008, with an option to purchase up to 63 additional units.<ref name=gazette-supply>{{cite news|url=http://www.railwaygazette.com/nc/news/single-view/view/bombardier-to-supply-electro-diesel-locos.html|title=Bombardier to supply electro-diesel locos|quote=The locomotives will be a dual-mode diesel and AC overhead electric evolution of the ALP-46 electric design in service with NJ Transit since 2002|date=19 August 2008|publisher=Railway Gazette International|access-date=10 January 2011|archive-date=10 January 2020|archive-url=https://web.archive.org/web/20200110094619/https://www.railwaygazette.com/nc/news/single-view/view/bombardier-to-supply-electro-diesel-locos.html|url-status=dead}}</ref>{{sfn|Vantuono|2008|p=18}} The first locomotive from the order was displayed at Innotrans in 2010<ref name=gazette-debut /> and was officially unveiled at Pennsylvania Station on May 11, 2011.<ref name="rg16may2011">{{citation| url = http://www.railwaygazette.com/nc/news/single-view/view/new-jersey-transit-unveils-first-alp-45-loco.html| title = New Jersey Transit unveils first ALP-45 loco| date = 16 May 2011| work = www.railwaygazette.com| access-date = 25 June 2012| archive-date = 11 January 2020| archive-url = https://web.archive.org/web/20200111051309/https://www.railwaygazette.com/nc/news/single-view/view/new-jersey-transit-unveils-first-alp-45-loco.html| url-status = dead}}</ref> NJT purchased 9 additional units in July 2010.<ref name="gazette-10more">{{cite news|date=19 July 2010|title=NJ Transit approves FY2011 spending|publisher=Railway Gazette International|url=http://www.railwaygazette.com/nc/news/single-view/view/nj-transit-approves-fy2011-spending.html|quote=An order for 100 additional double-deck commuter cars, valued at up to $293·5m, and 9 additional dual-mode locomotives costing $78·8m, was approved on July 15 by New Jersey Transit, exercising options on existing orders with Bombardier.|access-date=13 January 2011|archive-date=20 December 2019|archive-url=https://web.archive.org/web/20191220080926/https://www.railwaygazette.com/nc/news/single-view/view/nj-transit-approves-fy2011-spending.html|url-status=dead}}</ref><ref>{{cite web|date=14 July 2010|title=NJ Transit Orders Modern Rail and Bus Equipmjent|url=http://www.njtransit.com/tm/tm_servlet.srv?hdnPageAction=PressReleaseTo&PRESS_RELEASE_ID=2615|publisher=NJ Transit|access-date=25 June 2012|archive-date=22 December 2019|archive-url=https://web.archive.org/web/20191222165758/http://www.njtransit.com/tm/tm_servlet.srv?hdnPageAction=PressReleaseTo&PRESS_RELEASE_ID=2615|url-status=dead}}</ref><ref>{{citation|title=NJ Transit approves capital, operating budgets|date=14 July 2010|url=http://www.businessweek.com/ap/financialnews/D9GUVTI80.htm|archive-url=https://web.archive.org/web/20150923230552/http://www.businessweek.com/ap/financialnews/D9GUVTI80.htm|url-status=dead|archive-date=September 23, 2015|work=www.businessweek.com}}</ref><ref>{{citation|title=DUAL POWER LOCOMOTIVE PROCUREMENT =|url=http://www.njtransit.com/tm/tm_servlet.srv?hdnPageAction=CapProjectDetailsTo&CapitalProjectId=23|access-date=2012-04-17|archive-date=2019-12-20|archive-url=https://web.archive.org/web/20191220060811/http://www.njtransit.com/tm/tm_servlet.srv?hdnPageAction=CapProjectDetailsTo&CapitalProjectId=23|url-status=dead}}</ref> The locomotives from these two orders are numbered 4500–4534.
The ALP-45DPs are used on the Morristown Line, Montclair-Boonton Line, Raritan Valley Line, Northeast Corridor Line, and the North Jersey Coast Line, providing a one-seat ride into New York Penn Station.{{sfn|Pernička|Kuchta|2010|p=52}} They are also used on the Main Line, Bergen County Line, Pascack Valley Line, and occasionally on Metro-North Railroad's Port Jervis Line while some are used on the Gladstone Branch on either Hoboken or Midtown direct trains.{{sfn|Pernička|Kuchta|2010|p=58}} They have replaced all GP40FH-2 locomotives (except those owned by Metro-North), and a majority of the GP40PH-2 and F40PH-2CAT locomotives.
In December 2017, NJT purchased 17 additional ALP-45DPs, labelled as the ALP-45A.<ref>{{cite web | url=http://www.railjournal.com/index.php/north-america/nj-transit-to-order-more-alp-45dp-electro-diesels.html | title=NJ Transit to order more electro-diesels | publisher=International Rail Journal | date=December 8, 2017 | access-date=December 8, 2017}}</ref><ref>{{Cite news|url=https://www.railwayage.com/news/nj-transit-to-order-113-double-deck-emu-cars/|title=NJT: Bi-level EMUs, more dual-power locos on tap - Railway Age|date=2017-11-17|work=Railway Age|access-date=2018-08-27|language=en-US}}</ref><ref>{{Cite web|last=TIMES|first=The STAT TRADE|title=New Jersey orders 17 more ALP-45DP locomotives from Bombardier {{!}} Supply Chain|url=https://www.stattimes.com/news/new-jersey-orders-17-more-alp45-locomotives-from-bombardier-supply-chain/|url-status=dead|archive-url=https://web.archive.org/web/20200229062916/https://www.stattimes.com/news/new-jersey-orders-17-more-alp45-locomotives-from-bombardier-supply-chain/|archive-date=2020-02-29|access-date=2018-01-14|website=www.stattimes.com|language=en}}</ref> On June 28, 2019, Bombardier announced that the first car body from this order was inspected and approved for final assembly.<ref>{{Cite web|url=https://twitter.com/bombardierrail/status/1144606664496209922|title=First Carbody Inspected and Approved}}</ref> In July 2020, NJT ordered 8 additional ALP-45As. Originally slated to replace the remaining GP40PH-2B locomotives, the 25 locomotives are now intended to replace the majority of the PL42AC fleet, due to the PL42AC's unreliability and inability to be upgraded to meet new Environmental Protection Agency standards.<ref>{{Cite web|last=Medina|first=Toni|title=NJ TRANSIT|url=https://www.njtransit.com/|access-date=2021-02-19|website=NJ TRANSIT|language=en-US}}</ref> The ALP-45A locomotives from the 2017 and 2020 orders will be numbered 4535–4559. On December 15, 2020, the first unit from the order, #4535, has left the Kassel factory and was delivered in January 2021.<ref>{{Cite web|title=4535 leaves the Kassel factory|url=https://twitter.com/BombardierRail/status/1338854402459832320}}</ref> #4536 was the first ALP-45A unit to enter revenue service on July 30, 2021.<ref>{{cite web |title=NJ Transit welcomes first ALP-45A to the fleet |url=https://twitter.com/NJTRANSIT/status/1421137207381872640 |language=en}}</ref> Following the purchase of Bombardier Transportation in January 2021, Alstom will be responsible for completing the ALP-45A order. On May 14th, 2025, NJT ordered 12 new ALP-45As, along with 200 new Multilevel III railcars from Alstom.<ref>{{cite web |url=https://content.njtransit.com/sites/default/files/board/meeting_minutes/2025_05_14_OpenSess.pdf|date=May 21, 2025|title=Board Meeting Minutes May 14, 2025|website=NJ Transit}}</ref> This leaves 17 optional locomotives remaining.
In 2019, NJ Transit unveiled locomotive 4519 wrapped in a heritage Erie Lackawanna scheme.<ref>{{Cite web|url=https://trn.trains.com/news/news-wire/2019/10/08-nj-transit-provides-more-details-on-heritage-units|title=NJ Transit provides more details on heritage units | Trains Magazine|access-date=2023-10-27|archive-date=2019-12-11|archive-url=https://web.archive.org/web/20191211165204/http://trn.trains.com/news/news-wire/2019/10/08-nj-transit-provides-more-details-on-heritage-units|url-status=dead}}</ref>
===Exo=== [[File:AMT Train Vaudreuil.jpg|thumb|left|Exo ALP-45DP #1356 at Vendôme Station]] In 2008, the predecessor of Montreal's Exo, the ''Agence métropolitaine de transport'' (AMT), ordered 20 locomotives (with an option for 10 more), with an order value of €152 million. These units replaced the remaining GP9s, F40PHRs, and all ex-NJT equipment. The locomotives are for use on the Vaudreuil-Hudson line, Saint-Jérôme line, Mont-Saint-Hilaire line, and Mascouche line to Montreal Central Station via the {{nowrap|25 kV AC}} electrified Mount Royal Tunnel.<ref name=gazette-supply /> They are numbered 1350-1369.{{sfn|Pernička|Kuchta|2010|p=58}}
The first unit, AMT 1350, arrived in Montreal on June 9, 2011, after being shipped to Newark and then moving north to its new home.<ref name=gazette-first-amt>{{cite news| url=http://www.railwaygazette.com/nc/news/single-view/view/amt-electro-diesel-arrives-in-montreal.html| title=AMT electro-diesel arrives in Montréal| quote=Montréal commuter rail authority Agence Métropolitaine de Transport took delivery of its first Bombardier-built ALP-45 electro-diesel locomotives on June 9. [...] Built at Kassel in Germany, the locomotive was shipped from Hamburg to Newark, New Jersey, and moved to Montréal under its own power| date=June 16, 2011| access-date=June 17, 2011| publisher=Railway Gazette International| archive-date=September 17, 2011| archive-url=https://web.archive.org/web/20110917115419/http://www.railwaygazette.com/nc/news/single-view/view/amt-electro-diesel-arrives-in-montreal.html| url-status=dead}}</ref>
The locomotives originally ran in electric mode along the entirety of the Deux-Montagnes line and along the Mascouche line between Montreal Central Station and Ahuntsic station. However, in January 2020, the electrified portion of the Exo network was permanently closed, so the locomotives now operate exclusively in diesel mode.<ref>{{Cite web|url=https://rem.info/en/deux-montagnes-line|title=Deux-Montagnes and Mascouche lines - Transitional network from January 2020|website=REM|language=en|access-date=2019-09-23}}</ref> The Deux-Montagnes line was converted into the mainline of the Réseau express métropolitain light metro system and the Mascouche line was truncated to Côte-de-Liesse station. {{Clear|left}}
==Design== The ALP-45DP is an electro-diesel locomotive design, based on Bombardier's ALP-46/A and TRAXX locomotives.{{sfn|Pernička|Kuchta|2010|p=54|loc=ALP-45DP Design Concept}}{{#tag:ref|"ALP" refers to "American Locomotive Passenger"; "4" indicates the number of axles; "5" refers to the power class, ~5MW; "DP" indicates dual power.{{sfn|Pernička|Kuchta|2010|p=52}}|group="note"}} Design requirements included weight less than {{convert|288000|lb|kg|abbr=on}}, length less than {{convert|75|ft|m|2|abbr=on}}, and EPA-compliant emissions.{{sfn|Vantuono|2008|p=18}}
The challenge of fitting diesel and electric systems within the same carbody while staying within axle load limits, led to the choice of two high-speed, twelve-cylinder Caterpillar 3512C HD diesel engines rated at {{convert|2100|hp|MW|abbr=on}} each.{{sfn|Vantuono|2008|p=18}} The systems for the two engines are independent{{spaced ndash}}for example, each has a separate {{convert|3400|L|abbr=on}} fuel supply (split across four total tanks owing to NJT regulations regarding tunnel operations that limit individual fuel tank capacity to {{convert|400|gal|abbr=on}}{{sfn|Pernička|Kuchta|2010|p=58}}){{spaced ndash}}allowing the locomotive to operate on one engine in case of failure or under low load. The engines are capable of shorter startup times from idle to load (100 rpm/s) than traditional medium speed diesel engines.{{sfn|Canetta|Bikle|2010|p=4}} To achieve mass balance and distribution within the locomotive, the engines are situated on either side of the transformer, which is located in the center of the locomotive.<ref name=gazette-debut /> The engines are manufactured in Lafayette, Indiana, USA.{{sfn|Pernička|Kuchta|2010|pp=53,56}}
When running under diesel power, each engine powers a MITRAC TG 3800 A alternator having an output of 1700 kVA @ 1800 rpm.{{sfn|Pernička|Kuchta|2010|p=56}} Power output is reduced from {{convert|6700|hp|MW|abbr=on}} (including HEP) in electric mode to {{convert|4200|hp|MW|abbr=on}} in diesel mode;{{sfn|Vantuono|2008|p=18}} under diesel power, the same tractive effort curve is maintained up to around {{convert|25|km/h|abbr=on}} (assuming {{convert|2734|hp|MW|abbr=on}} available for traction after HEP reductions for an 8 car train).{{sfn|Brugger|Schwendt|Spillman|Vitins|2000|p=562|loc = ALP-45DP und ALP-46A Leistungen am Rad}}{{sfn|Vitins|2011|loc= Table 1}}
The pantograph is of TransTech design.{{sfn|Vantuono|2011|p=29}} The ABB main transformer has four secondary taps, switchable to supply 1360 V under all electrification supplies. There are two MITRAC TC 3360 DP V01 DC-AC main converters,{{sfn|Pernička|Kuchta|2010|loc="electrical equipment"|p=54}} one per bogie, which convert the single phase input to a 2,8 kV intermediate DC-bus, using IGBT based switches. Each DC bus powers two traction converters, with each traction inverter powering a separate traction motor.{{sfn|Pernička|Kuchta|2010|loc="traction converter"}}{{sfn|Pernička|Kuchta|2010|loc="transformer"|p=55}} The locomotive uses four {{convert|1300|kW|abbr=on}} MITRAC DR 3700 F{{#tag:ref|Each traction motor drive- unit consists of a MITRAC TM 3700F forced air cooled, three phase induction (asynchronous) motor, with a MITRAC GB 3700 helical spur gear and hollow shaft drive.{{sfn|Canetta|Bikle|2010|loc= Drive Unit, pp.13-14}}|group="note"|name="tmdrive"}} fully suspended, bogie mounted traction drives to reduce unsprung mass.{{sfn|Pernička|Kuchta|2010|loc="traction motor"|p=56}}{{sfn|Vantuono|2008|p=18|loc = quote : ''.. to reduce unsprung mass by suspending the traction motors on the trucks, not direct to the axles (like the ALP-46 and newer ALP-46A)''}}{{sfn|Vantuono|2011|p=29}}
In addition to taps for the traction inverters, the locomotive transformer supplies 1 100 kVA and 140 kVA for head-end power and locomotive auxiliary power.{{sfn|Pernička|Kuchta|2010|loc="transformer"|p=55}} Two partially-redundant auxiliary inverters are incorporated into the two main converter units.{{sfn|Pernička|Kuchta|2010|loc="traction converter"}}{{sfn|Pernička|Kuchta|2010|loc="auxiliary"| p=56}} Normally, one provides a 3 phase, 480 V 60 Hz 1100 kVA supply for head end power, while the other provides several 3 phase variable voltage, variable frequency supplies (up to 480 V 60 Hz) for the traction motor fans, transformer fans, and inverter cooling circuit motors.{{sfn|Pernička|Kuchta|2010|loc="auxiliary"| p=56}} In the event of a converter failure, it is possible to route all supply through a single converter, ensuring redundancy and margin of error operations. {{sfn|Canetta|Bikle|2010|p=7-8}}
HEP is maintained when changing power modes, due to the fact that the pantograph is not lowered until the prime movers have been started (when changing from electric to diesel), and the prime movers are not shut down until the pantograph has made contact with the catenary wire (when changing from diesel to electric). In either case, the changeover takes approximately 100 seconds.{{sfn|Vantuono|2011|p=29}} The locomotive is capable of performing a mode change while on the move; however, NJ Transit has reprogrammed their locomotives to only allow a mode change during a station stop. This is most likely to prevent the loss of power during the transition to diesel mode with a limited amount of wire left.
The braking system uses Wabtec's Fastbrake control system, with two disc brakes per axle.<ref name="ECO4">{{harvnb|Canetta|Bikle|2010|loc=Brake|p=8}}</ref> The mechanical parts of the brake system were supplied by Faiveley Transport.{{sfn|Pernička|Kuchta|2010|loc="braking"| p=56}} Compressed air supply is charged through a Knorr screw compressor with a capacity of {{cvt|3400|L/min}} at {{cvt|10|bar|kPa psi}} pressure,{{sfn|Pernička|Kuchta|2010|loc="compressed air"| p=56}} stored in two {{cvt|480|L}} air reservoirs.<ref name="ECO4"/> The dynamic and regenerative braking system operates under all three NJT electrical systems.{{sfn|Pernička|Kuchta|2010|p=56}} In addition, the locomotive, while in diesel mode, is capable of routing power generated by the electric brake to HEP and locomotive auxiliary power requirements in addition to the dynamic brake resistor.{{sfn|Vitins|2011|loc= Page 4, line 25}}
The locomotives are within Amtrak's A-05-1355 structure gauge and meet CFR and AAR crashworthiness standards.{{sfn|Vantuono|2011|p=29}} The diesel engines meet Tier 3 EPA emission standards, and work is being done to enable an upgrade to Tier 4 standards, which took effect on January 1, 2015.{{sfn|Vitins|2011|pp =5, also 9|loc= quote: ''"..Caterpillar 3512HD high speed engines were chosen for the diesel mode. ... they meet Tier3 exhaust emission standards. A solution is now being prepared to meet Tier4"''}} Total length is {{cvt|21.8|m}}, approximately {{cvt|2|m}} longer than the ALP-46A.<ref name=gazette-debut>{{cite news|url=http://www.railwaygazette.com/nc/news/single-view/view/alp-45dp-electro-diesel-locomotive-debut.html|title=ALP-45DP electro-diesel locomotive debut|quote=With an overall length of 21·8 m, the dual-mode loco is around 2 m longer than the electric version. Careful design of the internal layout and has helped to keep weight of the four-axle loco to 130 tonnes. ... It has a pair of Caterpillar 3512C engines rated at 2 100 hp arranged symmetrically around the transformer and converter pack to balance the weight.|date=23 September 2010|publisher=Railway Gazette International|archive-date=31 January 2020|access-date=10 January 2011|archive-url=https://web.archive.org/web/20200131191655/https://www.railwaygazette.com/nc/news/single-view/view/alp-45dp-electro-diesel-locomotive-debut.html|url-status=dead}}</ref>
The bodyshells of the locomotive were constructed at Bombardier's Wrocław site, the bogies at Siegen, and the alternators at Hennigsdorf factory. The locomotives were assembled at Kassel.{{sfn|Pernička|Kuchta|2010|pp=56, 58}}
==Gallery== <gallery class="center" widths="" heights="" mode="" caption="ALP-45DP at Innotrans 2010"> File:Bombardier ALP-45DP at Innotrans 2010.jpg|Front view File:Bombardier ALP-45DP Innotrans 2010 Rear Shot.jpg|Rear corner view File:Bombardier ALP-45DP Innotrans 2010 Full Frontal Shot.jpg|Frontal shot File:Bombardier ALP-45DP Pantograph Shot Innotrans 2010.jpg|Pantograph mounted at the rear of the locomotive File:Bombardier ALP-45DP Underside Truck Shot.jpg|Bogie and suspension detail File:Bombardier ALP-45DP Caterpillar Diesel Prime Mover.jpg|Caterpillar prime mover inside the engine room File:Bombardier ALP-45DP Cab Shot Innotrans 2010.jpg|Cab interior File:Bombardier ALP-45DP Engineer Control Consol.jpg|Engineer's controls </gallery>
==Notes== {{reflist|group="note"}}
==References== {{reflist|30em}}
===Sources=== {{refbegin}} *{{citation| url=https://library.e.abb.com/public/2cb85de0f43836f3c12578260051d829/Railvolution06-10-Traction-transformer.pdf| journal=Railvolution| first1=Jaromír| last1=Pernička| first2=Tomáš| last2=Kuchta| title=Electro-Diesels For New Jersey And Montreal| year=2010| issue=6/10| pages=52–58| publisher=M-Presse plus s.r.o.}} *{{citation| journal = Eisenbahn-Revue| issue=11|year = 2000| first1 =P.|last1 = Brugger|first2= L.|last2= Schwendt|first3= M.|last3 = Spillman|first4= J.|last4= Vitins|title= Die Zweikraft-Lokomotive ALP-45DP – eine Innovation für den amerikanischen Markt| pages= 560–563}} *{{citation| url=http://www.ble272.org/09-03-25%20Transprotation-Safety%20Presentation.pdf| publisher=NJ Transit| title=NJ Transit ALP45DP Project Status| date=March 2009| archive-url=https://web.archive.org/web/20110725081431/http://www.ble272.org/09-03-25%20Transprotation-Safety%20Presentation.pdf| archive-date=25 July 2011| url-status=live| ref=njpro}} *{{citation| url = http://www.br146.de/revisionen_daten/DualPower_10290_LOC_Sept08_en.pdf| title = North America - Passenger - Dual-Powered Locomotive| publisher = Bombardier| access-date = 2009-03-07| archive-url = https://web.archive.org/web/20110718203457/http://www.br146.de/revisionen_daten/DualPower_10290_LOC_Sept08_en.pdf| archive-date = 2011-07-18| url-status = dead}} *{{citation|url = http://www.nxtbook.com/nxtbooks/sb/ra0808/#/20|journal = Railway Age|date = Aug 2008|title = NJT, AMT ready for dual power locomotives|page = 18|first = William C.|last = Vantuono}}, [http://findarticles.com/p/articles/mi_m1215/is_8_209/ai_n28046514/ HTML text link via ''findarticles.com''] *{{citation|url = http://www.nxtbook.com/nxtbooks/sb/ra0611/#/46|journal = Railway Age|title = ALP-45DP: Two locomotives in one|date = June 2011|first = William C.|last = Vantuono|pages = 28–29|access-date = 2011-06-11|archive-date = 2012-04-26|archive-url = https://web.archive.org/web/20120426073727/http://www.nxtbook.com/nxtbooks/sb/ra0611/#/46|url-status = dead}}, [http://www.railwayage.com/index.php/passenger/commuter-regional/alp-45dp-two-locomotives-in-one.html#.T-hacRf7jIA HTML link via ''www.raiwayage.com''] *{{citation| first=Janis| last=Vitins| url=http://docs.trb.org/prp/12-1052.pdf| title=DUAL MODE AND NEW DIESEL LOCOMOTIVE DEVELOPMENTS| date=October 28, 2011| access-date=June 26, 2012| archive-url=https://web.archive.org/web/20120618011211/http://docs.trb.org/prp/12-1052.pdf| archive-date=2012-06-18| url-status=dead}} *{{citation| url = http://intranet.imet.gr/Portals/0/UsefulDocuments/documents/02421.pdf| title = ECO4 SUPERIOR PRODUCTS: DUAL POWERED LOCOMOTIVES ALP-45DP FOR THE NORTH AMERICAN RAILWAYS| first1 = Diego| last1 = Canetta| first2 = Urs| last2 = Bikle| date = July 2010| work = 12th World Conference on Transport Research (Lisbon)}}{{Dead link|date=September 2018 |bot=InternetArchiveBot |fix-attempted=yes }} {{refend}}
==Further reading== *{{cite web|url=http://www.bombardier.com/content/dam/Websites/bombardiercom/supporting-documents/BT/Bombardier-Transportation-ECO4-MITRAC_Hybrid-EN.pdf |title=MITRAC Hybrid The Dual Power Propulsion Chain |publisher=Bombardier |archive-url=https://web.archive.org/web/20200219051117/http://www.bombardier.com/content/dam/Websites/bombardiercom/supporting-documents/BT/Bombardier-Transportation-ECO4-MITRAC_Hybrid-EN.pdf |archive-date=2020-02-19}}
==External links== *{{Commons category-inline|Bombardier ALP-45DP locomotives}}
{{New Jersey Transit Rail}} {{NA Electro-diesel}}
{{DEFAULTSORT:Alp-45dp}} Category:Bombardier Transportation locomotives Category:Electro-diesel locomotives Category:NJ Transit Rail Operations Category:Exo (public transit) Category:11 kV AC locomotives Category:25 kV AC locomotives Category:Passenger locomotives Category:Electric locomotives of Canada Category:Electric locomotives of the United States Category:Diesel locomotives of the United States Category:EPA Tier 3-compliant locomotives of the United States Category:Standard-gauge locomotives of the United States Category:Standard-gauge locomotives of Canada