Sdd23 diesel locomotive is a passenger and freight locomotive developed for Pakistan's broad-gauge railway. The locomotive adopts a single-cab outdoor corridor body structure, and the running part is a secondary high round spring + low inclined tie rod traction bogie. Equipped with CAT C175-16 diesel engine, main and auxiliary coaxial generators, auxiliary AC drive system and microcomputer control system, with double-machine reconnection and resistance braking functions. The locomotive has the characteristics of adapting to high-speed operation in high temperature, strong wind, sand and dust environment and complex environment.
CKD7B diesel locomotive is the main line diesel locomotive exported by CRRC Dalian Locomotive and Rolling Stock Co., Ltd. to Myanmar. The locomotive adopts cat3516b diesel engine and ADLC microcomputer control device produced by American Caterpillar. It has the functions of constant power excitation control (exciter excitation direct control), auxiliary power generation control, resistance braking control, rotation sticking prevention control, etc. The braking method adopts air braking and resistance braking.