Diesel locomotives are designed for horizontal rail transport especially in mines and enclosed spaces. They are also intended for use in explosive environment with coal dust and methane in volume up to 1.5 %, and they are certified according to European safety standards and ATEX standards. They can work on slopes of rail lines up to 35%o, with track gauge from 500 to 1060 mm, at ambient temperatures from -20 to 40 °C.
Locomotives are weighing from 5 to 15 tons; they are composed of three parts, two cabins and the central part where it is located engine and chassis. Cabins are removable for ease of transport of locomotives into underground tunnels. Diesel engines are water cooled with power from 35 to 120 kW. The exhaust gases pass through water-cooled exhaust manifold. Transmission of torque moment from the engine to the axle gear is through hydrostatic transmission that provides smooth operation. The chassis is of dual-axle type, transmission to the second axle is assured by inter-axle cardan driveshaft. Travel wheels are secured with interchangeable rims. Suspension of locomotives is provided by elastic rubber-metal blocks of sagittal shape.
Locomotive braking is performed by two independent systems on both axles: Hydraulic – it means by hydrostatic transmission through mechanical gears and mechanical – it means by mechanical action through direct linkage to travel wheels. Brake control is proportional and maximum brake force/stopping power is self-adjustable. Parking brake is automatic. The security system provides automatic stop of the locomotive engine in a case of failure mode and when exceeding the temperature and pressure limit values. The driver is informed about all conditions on the dashboard.
Technical parameters are here.
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