The EMD SD22ECO is a 2,150
hp (1,600 kW)
C-Cdiesel-electric locomotive rebuilt by
Electro-Motive Diesel. It is, along with the
GP22ECO, primarily the application of a conversion kit to an existing
EMD SD40-type locomotive. This involves replacing the existing
prime mover with an
EPATier-II-compliant
turbochargedV8710G3A-T2, with
electronic fuel injection. The prime mover is mated to an AR10 alternator for traction power, a CA6 alternator for control power, and a computerized control system.[1] This conversion does not alter the external appearance of the locomotive.