ALP-45DP 4509 In New York Penn Station.jpg
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The Bombardier ALP-45DP is a type of single cab
dual-mode locomotive An electro-diesel locomotive (also referred to as a dual-mode or bi-mode locomotive) is a type of locomotive that can be powered either from an electricity supply (like an electric locomotive) or by using the onboard diesel engine (like a diese ...
built by
Bombardier Transportation Bombardier Transportation was a Canadian-German rolling stock and rail transport manufacturer, headquartered in Berlin, Germany. It was one of the world's largest companies in the rail vehicle and equipment manufacturing and servicing industry ...
(later
Alstom Alstom SA is a French multinational rolling stock manufacturer operating worldwide in rail transport markets, active in the fields of passenger transportation, signalling, and locomotives, with products including the AGV, TGV, Eurostar, Avelia ...
) and operated by New Jersey Transit and Exo.


Operators


New Jersey Transit

New Jersey Transit (NJT) purchased 26 ALP-45DPs in 2008, with an option to purchase up to 63 additional units. The first locomotive from the order was displayed at Innotrans in 2010 and was officially unveiled at Pennsylvania Station on May 11, 2011. NJT purchased 9 additional units in July 2010. 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 The Northeast Corridor Line is a commuter rail service operated by NJ Transit between the Trenton Transit Center and New York Penn Station on Amtrak's Northeast Corridor in the United States. The service is the successor to Pennsylvania Railroad ...
, and the North Jersey Coast Line, providing a one-seat ride into
New York Penn Station Pennsylvania Station, also known as New York Penn Station or simply Penn Station, is the main inter-city rail, intercity railroad station in New York City and the List of busiest railway stations in North America, busiest transportation facilit ...
. They are also used on the
Main Line Mainline, ''Main line'', or ''Main Line'' may refer to: Transportation Railway * Main line (railway), the principal artery of a railway system * Main line railway preservation, the practice of operating preserved trains on an operational railw ...
, Bergen County Line, Pascack Valley Line, and occasionally on
Metro-North Railroad Metro-North Railroad , trading as MTA Metro-North Railroad, is a suburban commuter rail service run by the Metropolitan Transportation Authority (MTA), a New York State public benefit corporations, public authority of the U.S. state of New Yor ...
's Port Jervis Line. 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, which will replace the remaining GP40PH-2B fleet. On June 28, 2019, Bombardier announced that the first car body from this order was inspected and approved for final assembly. In July 2020, NJT ordered 8 additional ALP-45As, leaving 29 remaining in the option order. The 25 locomotives are now intended to replace the older locomotives of the PL42AC fleet instead of the GP40PH-2B fleet, due to the PL42AC's unreliability and inability to be upgraded to meet new
Environmental Protection Agency A biophysical environment is a biotic and abiotic surrounding of an organism or population, and consequently includes the factors that have an influence in their survival, development, and evolution. A biophysical environment can vary in scale f ...
standards. 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. #4536 was the first ALP-45A unit to enter revenue service on July 30, 2021.


Exo

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 Mascouche (also designated exo5, known during planning as Repentigny–Mascouche) is a commuter railway line in Greater Montreal, Quebec, Canada. It is operated by Exo, the organization that operates public transport services across this reg ...
to Montreal Central Station via the electrified Mount Royal Tunnel. They are numbered 1350-1369. 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. The locomotives run in electric mode along the entirety of the Deux-Montagnes line and along the
Mascouche line Mascouche (also designated exo5, known during planning as Repentigny–Mascouche) is a commuter railway line in Greater Montreal, Quebec, Canada. It is operated by Exo, the organization that operates public transport services across this reg ...
between Montreal Central Station and Ahuntsic station. However, with the conversion of the Deux-Montagnes line into the mainline of the
Réseau express métropolitain The Réseau express métropolitain (REM; en, Metropolitan Express Network) is a light metro rapid transit system under construction in Greater Montreal, Quebec, Canada. When completed in 2025, the system will link several Montreal suburbs and ...
light metro system and the permanent truncation of the
Mascouche line Mascouche (also designated exo5, known during planning as Repentigny–Mascouche) is a commuter railway line in Greater Montreal, Quebec, Canada. It is operated by Exo, the organization that operates public transport services across this reg ...
to Ahuntsic station starting in January 2020, the locomotives will be run exclusively in diesel mode.


Design

The ALP-45DP is an electro-diesel locomotive design, based on Bombardier's ALP-46/A and TRAXX locomotives. Design requirements included weight less than , length less than , and
EPA The Environmental Protection Agency (EPA) is an independent executive agency of the United States federal government tasked with environmental protection matters. President Richard Nixon proposed the establishment of EPA on July 9, 1970; it be ...
-compliant emissions. 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 Caterpillars ( ) are the larval stage of members of the order Lepidoptera (the insect order comprising butterflies and moths). As with most common names, the application of the word is arbitrary, since the larvae of sawflies (suborder Sym ...
3512C HD diesel engines rated at each. The systems for the two engines are independentfor example, each has a separate fuel supply (split across four total tanks owing to NJT regulations regarding tunnel operations that limit individual fuel tank capacity to )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. 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. The engines are manufactured in Lafayette, Indiana, USA. When running under diesel power, each engine powers a MITRAC TG 3800 A alternator having an output of 1700 kVA @ 1800 rpm. Power output is reduced from (including HEP) in electric mode to in diesel mode; under diesel power, the same tractive effort curve is maintained up to around (assuming available for traction after HEP reductions for an 8 car train). The pantograph is of TransTech design. 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, one per bogie, which convert the single phase input to a 2,8 kV intermediate DC-bus, using
IGBT An insulated-gate bipolar transistor (IGBT) is a three-terminal power semiconductor device primarily used as an electronic switch, which, as it was developed, came to combine high efficiency and fast switching. It consists of four alternating lay ...
based switches. Each DC bus powers two traction converters, with each traction inverter powering a separate traction motor. The locomotive uses four MITRAC DR 3700 F fully suspended, bogie mounted traction drives to reduce unsprung mass. 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. Two partially- redundant auxiliary inverters are incorporated into the two main converter units. Normally, one provides a
3 phase 3 (three) is a number, numeral and digit. It is the natural number following 2 and preceding 4, and is the smallest odd prime number and the only prime preceding a square number. It has religious or cultural significance in many societie ...
, 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. 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. 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. 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. The mechanical parts of the brake system were supplied by Faiveley Transport. Compressed air supply is charged through a Knorr screw compressor with a capacity of at pressure, stored in two air reservoirs. The dynamic and regenerative braking system operates under all three NJT electrical systems. 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. The locomotives are within Amtrak's A-05-1355 structure gauge and meet CFR and
AAR AAR or Aar may refer to: Geography * Aar, a river in Switzerland, tributary of the Rhine *Aar (Lahn), a tributary of Lahn river in Germany, descending from the Taunus mountains * Aar (Dill), a tributary of Dill river in Germany, also in the bas ...
crashworthiness standards. 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. Total length is , approximately longer than the ALP-46A. 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 Kassel (; in Germany, spelled Cassel until 1926) is a city on the Fulda River in northern Hesse, Germany. It is the administrative seat of the Regierungsbezirk Kassel and the district of the same name and had 201,048 inhabitants in December 2020 ...
.


Gallery

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


Notes


References


Sources

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External links

* * * *. *. *. {{DEFAULTSORT:Alp-45dp Bombardier Transportation locomotives Electro-diesel locomotives NJ Transit Rail Operations Exo (public transit) 11 kV AC locomotives 25 kV AC locomotives Passenger locomotives Electric locomotives of Canada Electric locomotives of the United States Diesel locomotives of the United States EPA Tier 3-compliant locomotives of the United States Standard gauge locomotives of the United States Standard gauge locomotives of Canada