EMD GP22ECO

EMD GP22ECO
KCS#2820 post-rebuild with a "Retro Belle" paint job
Type and origin Power type Diesel-electric Builder Electro-Motive Diesel(EMD)
Specifications Configuration: ​ •AAR B-B •UIC Bo'Bo' Gauge 4 ft8+1⁄2in(1,435 mm) Prime mover EMD8–710G3A–T2 Cylinders V8 Transmission Diesel-electric
Performance figures Power output 2,150hp(1,600 kW)

TheEMD GP22ECOis a 2,150hp(1,600 kW)B-Bdiesel-electric locomotiverebuilt byElectro-Motive DieselandNorfolk Southern's Juniata Shops. Initially EMD built two GP22ECO demonstrators, one based on aGP9and one based on aGP40,but thus far all orders have been for conversions based onEMD GP40andEMD GP40-2series locomotives. The rebuild involves replacing the existingprime moverwith anEPATier-II-compliantturbochargedV8710G3A,withElectronic 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. Applying this to a 6-axle locomotive results in aSD22ECO.Some 6-axle locomotives could alternately be converted into aSD32ECO,using a 3,150hp(2,350 kW)V12instead.

When applied to GP40 or GP40-2 series locomotives, this conversion does not alter the external appearance of the locomotive, although the conversion of the GP9-based demonstrator required extensive changes to the long hood. The GP22ECO offers customers a 'factory' upgrade of existing locomotives.

Norfolk Southern's units were rebuilt from GP38AC units. They also feature electrical, mechanical, and emissions improvements.

References

• Electro-Motive Diesel (June 22, 2009)."KCS Rolls Out EMD 710ECO™ Repower Locomotives".EMD(Press release).RetrievedAugust 27,2009.
• "710ECO Repower Solutions"(PDF).EMD.March 2008.RetrievedAugust 27,2009.

External links

• "Pictures of GP22ECO's in them".Railroad Picture Archives.