The China Railways HXN3 (EMD classification JT56ACe) is a 6000 horsepower

Horsepower

Horsepower is the name of several units of measurement of power. The most common definitions equal between 735.5 and 750 watts.Horsepower was originally defined to compare the output of steam engines with the power of draft horses in continuous operation. The unit was widely adopted to measure the...

 (4.5 MW) diesel-electric locomotive produced by Electro-Motive Diesels designed for export to China

People's Republic of China

China , officially the People's Republic of China , is the most populous country in the world, with over 1.3 billion citizens. Located in East Asia, the country covers approximately 9.6 million square kilometres...

. All JT56ACe locomotives use AC traction motor

Traction motor

Traction motor refers to an electric motor providing the primary rotational torque of a machine, usually for conversion into linear motion ....

 technology and utilize the EMD H-Engine

EMD 265

EMD 265, or the H-Engine, is a line of diesel engines built by Electro-Motive Diesel for use in locomotives. Unlike EMD's previous 567, 645, and 710 lines of engines, which operate under a two-stroke cycle, the H-Engine operates as a four-stroke engine. Also distinguishing it from EMD's other...

 as their prime mover. The locomotives are capable of meeting the EPA's

United States Environmental Protection Agency

The U.S. Environmental Protection Agency is an agency of the federal government of the United States charged with protecting human health and the environment, by writing and enforcing regulations based on laws passed by Congress...

 Tier 2 emissions regulations.

In September 2005, the People's Republic of China announced an order for 300 JT56ACe locomotives. A portion of the locomotives will be assembled in kit form by China's own Dalian Locomotive Works.