Diesel locomotive TGM-4: specifications, operation manual

The shunting Soviet diesel locomotive TGM-4, created on the basis of TGMZ, is an updated modification with an improved diesel power unit. , имеет водяное охлаждение и холодильную систему подаваемой воздушной смеси. The motor is a device with a cylindrical arrangement in a row , has water cooling and a refrigerating system of the supplied air mixture. The refrigerant circulates with the help of a turbine, and the start is made by means of an electric starter.

Hydraulic transmission of the locomotive can be used not only for maneuvers, but also in the train mode. Each position has a reverse. Another distinctive feature is the PC-35 compressor. It is activated by means of an additional shaft, which distributes power by means of a special coupling. It is possible to mount an analogue under the PC-3,5 or VU brand.

Traction parameters

The diesel locomotive TGM-4 has traction parameters, along which it is possible to determine the workload of the processed composition, the speed and the travel time. Shunting locomotives of this type are used in two main operating modes, taking into account the maximum traction values and minimum loads corresponding to the power costs and auxiliary resources of the locomotive.

For the traction characteristics there are a number of units and details:

• Driver's cab;
• Body, under which the main tanks and batteries are located;
• Two-machine unit;
• Air cleaner of a diesel engine;
• fan;
• Cooling shutters;
• compressor;
• Exhaust engine system;
• engine room;
• Oil cooler and main air compartments.

The movement is carried out through the interaction of the cardan drive of the axial reduction gears and hydraulic transmission. The main parts are placed on the frame of diesel locomotive TGM-4. Among other important details it is worth noting:

• Frame;
• Radiator sections;
• Automatic coupler;
• Electrical equipment;
• Filters for fine and coarse cleaning of oil and fuel;
• Remote Control;
• Electro-pneumatic valves;
• hand brake;
• oil pump.

Diesel locomotive TGM-4: technical characteristics

Below are the technical plan parameters that are typical for the locomotive in question:

• Type of locomotive - shunting option.
• The power of the diesel unit is 750 horsepower.
• The axis parameters are 2/2.
• The service weight is 80 tons.
• The load transferred to the rails by a wheel pair is 196 kN.
• The calculated shunting / train speed is 27/55 km / h.
• The track is 1520 mm.
• The minimum radius of inscription on the curves is 40 m.
• The number of leading axles is 4.
• The number of bogies is two.
• The diameter of the wheel is 1050 mm.
• Boots - roller-bearing type.
• The fuel reserve is 3300 liters.
• The capacity of the water / oil system is 380/300 liters.
• The stock of sand is 0.9 tons.
• The length / width / height - 12,6 / 3,14 / 4,6 m.
• Trolley base - 2,1 m.

Power point

Diesel unit diesel locomotive TGM-4 complies with the standard GOST 4393-82 and has the marking 6ЧН-21. It is equipped with six cylinders, each having a diameter of 210 mm. When the 210-millimeter piston is moving, the compression ratio is 13, 5. The cylinders work in sequence - 1/5/3/6/2/4.

The crankshaft has a left-hand direction with respect to the power take-off flanges. The maximum speed of the crankshaft is 1400 rpm. Controlled by this action is a stepped pneumatic system with eight positions, which is mounted directly on the diesel engine. Start the motor by using an electric starter.

Fuel and oil system

The diesel fuel consumption during operation of the diesel locomotive TGM-4 at full power is about 158 hp. The mixture is fed by a fuel pump with a capacity of 8 liters per minute. Protection is provided in the form of fine and coarse filters. The power unit is equipped with six closed-type injectors. The fuel is supplied at a pressure of 27 l / min. The pump is powered by an electric motor and there is a prefilter.

The lubrication system is a circulation unit under pressure. Specific consumption of lubricant is no more than 2.86 g / l per hour. The system is equipped with a gear oil pump with a feed rate of about 60 liters of fluid per minute. There are filter elements of coarse and fine cleaning. The pressure in the oil line at full power and operating temperature of 75 degrees is not less than 0.4 MPa. The maximum permissible temperature at the outlet is 95 degrees Celsius.

Brakes

The operating manual for the TGM-4 diesel locomotive states that before each trip it is necessary to check the reliability of the brake system. In the event of a malfunction, maneuvers should be deferred until troubleshooting. The locomotive brake assembly includes the following mechanisms:

• Type - shoe.
• Bringing the brakes into operation is a mechanical and pneumatic option.
• The driver's train crane No. 394 with air distributors is equipped with an auxiliary brake No. 254.
• Handbrake, which provides the depressing of pads on the axle in the volume of 320 kN.
• The number of axes of the air / hand unit is 4/2.
• The efficiency of the action of the brake cylinders is 0.38 MPa.

Cabin

Trolleys to the frame are fastened by spring suspension, which provides good maneuverability. The machine compartment is equipped with double doors and a removable roof, which allows unhindered access to the maintenance room for repair work.

The driver's cabin meets the requirements of GOST-70, has a low level of noise and vibration, while meeting all the minimum requirements for sanitary standards. The control and control devices are located as conveniently as possible, which makes it possible to drive a locomotive to one person. All the recommended manuals for action are duplicated on the dashboard in the form of light signals.

Finally

The characteristics of the diesel locomotive TGM-4 are considered above. During the serial production, about five thousand units of locomotives of this series were produced. Subsequent modifications of the car were found to be unprofitable, and so the developers began to design fundamentally new models with different parameters.

It should be noted that all copies of the locomotive in question were successfully operated on the roads of the post-Soviet space. They are highly maintainable and very rarely fail without the possibility of recovery. Some modifications can be found so far, mainly on the access roads.