Modernization of diesel-electric locomotive Type M62 302

With the installation of CATERPILLAR engine


Thetechnological goal behind the modernization and remotorization was on one side to retain the best features of the diesel-electric Locomotives involved in this project. On the other hand, a number of new requirements emerged from the Traction operational point of view that had to be addressed as follows;

		Save fuel and lubricating oil.
		Reduce locomotive engine’s harmful emissions.
		Reduce locomotive’s noise level.
		Reduce repair and operation costs.
		Reduce energy utilization during the operation of auxiliaries (reached by power-save controlling).
		Increase driver cabin’s comfort level.
		Ensure the reliable operation of the vehicle for 15-20 year,
		Improve information flow level for the drivers’ and the maintenance staff
		Ensure the durable anticorrosion resistance and the expected aesthetical appearance of the internal and external coating system for the entire planned lifetime

Main elements of the overhaul and modernization

The long-time reliable operated structural elements - frame, locomotivebody, bogies, traction motors, and wheel-sets – were overhauled sticking to its original design. Considerable modernization was carried out by installing the following main components:

+++NAGYTÁBLÁZAT+++

Modernizations in the driver cabin

		well-arranged driver and assistant table,
		forestaller EVM 120,
		air-conditioner THERMO KING in the driver cabin, which contains:
		automatic pre-heater WEBASTO Thermo 350,
		electrical, pantograph screen-wiper with adjustable cycle and screen-washer
		speedometer and running register TEL 1000,
		flange lubricator BEKA-MAX operating with environment-friendly material,
		heat able window-mirror PAT,
		driver seat Grammer DS 85 H/L,
		refrigerator RA 80 M,
		new, sound-proof, inner cover with fluorescent lamp and spot lighting.

Energy-supply of the auxiliary consumers. The electrical energy stored in the locomotive is supplied by two accumulator plants 340A, 24 V DC. The one accumulator plant supplies energy to all auxiliary consumers. The other plant supplies the starter of the diesel engine and for the exciting of the main generator. They are charged according to the operation conditions by a on the diesel engine mounted generator 24 V DC 150 A , a hydrostatic driven generator NIEHOFF S 498/A2-205, 250 A , and the A/C generator type TK 3,74, 24 V DC 250 A, driven by a 3-cylinder diesel engine.


Brake system of the locomotive. The auto acting brake device became with the application of driver brake control valve PBA 82H and brake panel PBL3-98 an electro pneumatic brake device. The auxiliary brake device is MWF system.The auto acting brake device remained a pressure modifier type brake device without speed dependence and with distributor valve FE 115, with pressure modifier DÜ 23/b/2,1 and plastic brake shoe.


Surface protection of the vehicle

		preparation of the metal structure according to MSZ ISO 8501-2 in quality Sa2,
		protection of the lapped surface with weld primer PERMATEX 2301,
		inter stage coating with AQUAVERN PRIMER, 40-60 m,
		cover coating with covering varnish NUVOVERN AQUA (color plan M62-24-21)