AMT GM-EMD F40PHR Locomotives
The General Motors Electro-Motive Division model F40PH is a 4-axle 3,200 hp (2.4 MW) B-B diesel-electric locomotive intended for passenger service, built from 1976 onwards.
The F40PH is equipped with a turbocharged EMD 645E3 V16 cylinder, two-stroke, water-cooled diesel engine (prime mover) that develops 3,200 hp (2.4 MW) at maximum rpm. Due to the high-pitch generated from its EMD 645E3 prime movers, the units have often been nicknamed by railfans and crews alike as "screamers". The main (traction) generator converts mechanical energy from the prime mover into electricity that is distributed through a high voltage cabinet to the traction motors. Each of the four traction motors is directly geared to a pair of driving wheels. The gear ratio of the traction motors to wheel axle determines the maximum operating speed of the locomotive; a standard F40PH has a gear ratio of 57:20 which provides a top speed of 103 mph (166 km/h).
The F40PH is equipped with a turbocharged EMD 645E3 V16 cylinder, two-stroke, water-cooled diesel engine (prime mover) that develops 3,200 hp (2.4 MW) at maximum rpm. Due to the high-pitch generated from its EMD 645E3 prime movers, the units have often been nicknamed by railfans and crews alike as "screamers". The main (traction) generator converts mechanical energy from the prime mover into electricity that is distributed through a high voltage cabinet to the traction motors. Each of the four traction motors is directly geared to a pair of driving wheels. The gear ratio of the traction motors to wheel axle determines the maximum operating speed of the locomotive; a standard F40PH has a gear ratio of 57:20 which provides a top speed of 103 mph (166 km/h).
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