Brookville BL20GH Diesel-Electric Locomotive
The Brookville BL20GH or BL20-GH is a diesel-electric locomotive built by the Brookville Equipment Corporation. The locomotive is designed for both freight and passenger service. Brookville built 12 in 2008 for the Metro-North Railroad. The Staten Island Railway operates four nearly identical BL20G locomotives, built by Brookville in December 2008, in work service.

Design
The BL20GH uses a V12 MTU-Detroit Diesel 12V4000 engine rated at 2,250 horsepower (1,680 kW). It has a separate Caterpillar engine for head end power, allowing the locomotive to be used in passenger service for branch line shuttle trains. The Metro-North locomotives are equipped with Automatic train control (ATC). The BL20GH is a low-emissions locomotive.

History
Brookville built a single demonstrator for the Connecticut Department of Transportation (CDOT); CDOT and the Metro-North combined to order eleven more in 2008, for a total of twelve locomotives. CDOT owns six of the locomotives, which it painted in its "McGinnis" paint scheme, named after former New York, New Haven and Hartford Railroad president Patrick B. McGinnis. This scheme consists of a black nose, with a white stripe and an orange rear, with white New-Haven lettering overlapping the orange rear. The first public run occurred on June 9, 2008.

These locomotives are used in branch service on the Metro-North Railroad, including the Danbury Branch and Waterbury Branch. They are used on shuttle trains operating on routes where there is no third rail (such as the tracks from Southeast to Wassaic). They lack third-rail shoes and thus rarely operate into Grand Central Terminal.

Variants
A nearly identical locomotive, known as the BL20G, operates on the Staten Island Railway. Four were built by Brookville Corporation in December 2008. They look a lot like the BL20GH, but one can tell the difference by looking at the vents at the end of the locomotive. In addition, these locomotives are only used for work trains, and thus will never be seen hauling a passenger train unless there is an emergency.

Brookville BL20GH Overview
Type and origin
Power type: Diesel
Builder: Brookville Equipment Corporation
Build date: 2008
Total produced: 12
Specifications
AAR wheel arrangement: B-B
Locomotive weight: 132 tons (118 long tons; 120 t)
Fuel capacity: 2,600 gallons (9,800 l; 2,200 imp gal)
Prime mover: MTU-Detroit Diesel 12V4000
Engine type: V12 diesel
Alternator: Kato
Generator: Caterpillar
Traction motors: D78
Cylinders: 12
Performance figures
Maximum speed: 75 mph (121 km/h)
Power output: 2,250 hp (1.68 MW)
Career
Operators: Metro-North Railroad
Numbers: 110–115 (MNRR)
Numbers: 125–130 (CDOT)
First run: 9 June 2008

See also:

Low-Emission Locomotives

Brookville Equipment

Diesel-Electric Locomotives

Metro-North Railroad/Connecticut DOT Brookville BL20GH No. 129 on display for the 2008 Croton-Harmon Shops Open House, October 11, 2008.

By AEMoreira042281 - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=4975945

Staten Island Railway BL20G No. 778 leading a work train at Clifton Yard, May 2, 2010.  Photo by Jim Henderson.

By Jim.henderson (Own work) [CC0], via Wikimedia Commons

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Staten Island Railway BL20G No. 778 leading a work train at Clifton Yard, May 2, 2010. Photo by Jim Henderson.
Metro-North Railroad/Connecticut DOT Brookville BL20GH No. 129 on display for the 2008 Croton-Harmon Shops Open House, October 11, 2008.
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