The Alstom PL42AC is a class of four axle B-B diesel-electric locomotive designed by Alstom in association with GM-EMD. 33 were built between 2003 and 2006 for NJ Transit Rail Operations.

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PL42AC
New Jersey Transit PL42AC #4029 at Convent station
Type and origin Power type Diesel-electric Builder Alstom, EMD Model PL42AC Build date 2003–2006[citation needed] Total produced 33
Specifications Configuration: ​  • AAR B-B  • UIC Bo′Bo′ Gauge 4 ft 8+1⁄2 in (1,435 mm) standard gauge Wheel diameter 42 in (1,067 mm) Length 69 ft 10 in (21.29 m) Width 10 ft 8 in (3.25 m) Height 15 ft 5 in (4.70 m) Loco weight 28,800 lb (13,100 kg)[1][2] Fuel capacity 2,250 US gal (1,870 imp gal; 8,500 L) Prime mover EMD 16-710G3B-T1 Engine type V16, two-stroke diesel Alternator TA-17 Head end power 800 kW (1,100 hp) Cylinders 16
Performance figures Maximum speed 160 km/h (99 mph)[1] Power output At Alternator:4,200 hp (3.1 MW) At Rail: 3,620 hp (2.70 MW) MAX with HEP on Tractive effort starting: 69,975 lbf (311.26 kN) continuous: 27,000 lbf (120 kN) [clarification needed]
Career Operators NJ Transit Numbers 4000–4032[3]
Sources:[2][4] except where noted

Description

The PL42AC is a diesel-electric 4-axle locomotive built by Alstom with 16-710G3B prime mover for New Jersey Transit. The first two locomotives were manufactured at the Meinfesa plant in Valencia, Spain in 2003.[5][6] The 31 following units were assembled at the Alstom Transport plant in Hornell, New York in 2004[6][7] and were produced through early 2006. The power rating of the PL42AC locomotives is 4,200 hp (3.1 MW) total for tractive effort and head-end power. The locomotive has a design similar to the GE Genesis, mainly due to the fact that both PL42AC and Genesis series locomotives were designed by industrial designer Cesar Vergara.[8]

This locomotive uses IGBT technology with precise traction computers for tractive effort. The PL42AC has 800 kilowatts head-end power and WABCO's EPIC II braking system, along with an E-7 wheel slide device, made by Wabtec, preventing flats spots on the wheels through software and hardware.

It has an Intelligent Display Unit (IDU) based on Bombardier Transportation technology from which an engineer or technician can view data or download events and faults from the previous weeks or months. The technician can do a host of tests from the IDU to determine if a specific system is operating correctly.

The PL42AC uses computer hardware and software to control functions and to protect the engine. For example, if the on-board computer detects too little oil in the system, it will shut down the engine to avoid damage.

Replacement

In July 2020, NJ Transit announced that older locomotives in the PL42AC fleet will be replaced by additional ALP-45A dual mode locomotives.[9]

References

Wikimedia Commons has media related to PL42AC locomotives.