Locomotive Class 418 (M41)

The locomotive is designed for routing passenger and freight trains on lines with an axle load exceeding 165 kN. As an energy source, SEMT-Pielsstick PA4-185 type diesel engine was used, with maximum revolutions of 1,500/min. The diesel engine rotates the wheel pairs of the locomotive through one hydrodynamic and two torque converter gears; with help of cardan axles and axle gears. The auxiliary generator of the locomotive also ensures electric heating of the passenger wagons, with a heating voltage of 1,500 V 50 Hz.

During the course of modernisation of the locomotive, a diesel engine compliant with EURO2 quality standards was built in, and computerised vehicle and engine control was developed. Locomotives were equipped with auxiliary generators and air conditioning. The control and regulation of train heating were also modernised, in as much as the nominal heating voltage became an alternating voltage of 1,000 and 1,500 V, and heating frequency was also made adjustable.

Locomotives of class M41 are currently used to route passenger and freight trains.