The Brookville BL36PH is a four-axle diesel-electric locomotive for commuter trains, designed by Brookville Equipment Corporation.[2] It is built with an MTU 20V4000 V20 engine rated at 3,619 horsepower (2,699 kW) to meet EPA Tier 3 emissions standards.[2] It was the first North American passenger locomotive designed with a 20-cylinder engine since the EMD SDP45 and EMD FP45, originally built in the 1960s.[3]Head end power is generated by a separate, smaller diesel (Caterpillar C-18) gen-set and is rated at 500 kW (670 hp). The outer shell of the locomotive has been designed by Cesar Vergara,[2] who has also designed the outer shells of several other North American passenger locomotives, including the MPXpress and the EMD F59PHI.[4]