EMD F40PH

| Technical Data Total Built: 398 Weight: 118t Length: 56'2" (17.2m) Engine Power: 3,000Hp
Max Speed: 103Mph
Fuel Capacity: 1,800gal (6,800L)

The Electro-Motive Division F40PH is a 3000 horsepower (2.2 MW) B-B diesel-electric locomotive produced in the late 1970's and intended for service on Amtrak's intercity lines.

The F40PH features a turbocharged 645E3 16 cylinder, two-stroke, water-cooled diesel engine or prime mover that develops 3,000 tractive horsepower (2.2 MW) at maximum rpm. The main traction generator converts mechanical energy from the prime mover into electrical energy that is distributed through to the traction motors. Each of the four traction motors are 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 which provides a top speed of 103 mph (166 km/h). Introduction of the F40PH series was a replacement for the EMD SDP40F, Amtrak's first series of locomotives built new for them since 1971.