Diesel locomotive TGM-4: specifications, operation manual

2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:41

The shunting Soviet diesel locomotive TGM-4, created on the basis of TGMZ, is an updated modification with an improved diesel power unit. The motor is a device with a cylindrical arrangement in a row, has water cooling and a refrigeration system for the supplied air mixture. The refrigerant is circulated by a turbine, and the start is made by an electric starter.

The hydraulic transmission of the locomotive can be used not only for maneuvers, but also in train mode. Each position has a reverse. Another distinctive detail is the PK-35 compressor. It is activated by an additional shaft that distributes power using a special clutch. It is possible to mount an analogue under the brand name PK-3, 5 or VU.

Traction parameters

Diesel locomotive TGM-4 has traction parameters, which can be used to determine the workload of the processed train, speed and 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 diesel locomotive.

A number of nodes anddetails:

• driver's cab;
• body under which the main tanks and batteries are placed;
• two-machine unit;
• diesel air cleaner;
• fan;
• cooling louvers;
• compressor;
• exhaust motor system;
• engine room;
• oil cooler and main air boxes.

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

• frame;
• radiator sections;
• auto coupler;
• electrical equipment;
• fine and coarse oil and fuel filters;
• control panel;
• electropneumatic valves;
• handbrake;
• oil pump.

Diesel locomotive TGM-4: specifications

The following are the technical plan parameters specific to the locomotive in question:

• Type of diesel locomotive - shunting option.
• The power of the diesel plant is 750 horsepower.
• Axes parameters - 2/2.
• Service weight - 80 t.
• The load transferred to the rails by the wheelset is 196 kN.
• Estimated shunting/train speed is 27/55 km/h.
• Track - 1520 mm.
• The minimum fit radius on curves is 40 m.
• Number of driving axles – 4.
• Two trolleys.
• Diameterwheels - 1050 mm.
• Boxes - roller bearing type.
• Fuel capacity - 3300 liters.
• Water/oil system capacity - 380/300L.
• Sand reserve - 0.9 t.
• Length/width/height – 12, 6/3, 14/4, 6 m.
• Trolley base - 2, 1 m.

Power plant

The diesel unit of the diesel locomotive TGM-4 complies with the GOST 4393-82 standard and is marked 6CHN-21. It is equipped with six cylinders, each with a diameter of 210 mm. With a 210-millimeter piston stroke, the compression ratio is 13.5. The cylinders work in sequence - 1/5/3/6/2/4.

The crankshaft has a left direction of movement in relation to the power take-off flanges. The maximum crankshaft speed is 1400 rpm. This action is controlled by a stepped pneumatic system with eight positions, which is mounted directly on the diesel engine. The engine is started using an electric starter.

Fuel and oil system

Diesel fuel consumption during the operation of the diesel locomotive TGM-4 at full power is about 158 hp. The mixture is supplied 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 nozzles. Fuel is supplied under pressure at a rate of 27 l / min. The pump is powered by an electric motor and has a fuel pre-filter.

Lubrication systemIt is a circulation unit under pressure. The specific lubricant consumption is no more than 2.86 g/l per hour. The system is equipped with a gear-type oil priming pump with a flow of about 60 liters of liquid per minute. There are coarse and fine filter elements. The pressure in the oil line at full power and an operating temperature of 75 degrees is at least 0.4 MPa. The maximum allowable outlet temperature is 95 degrees Celsius.

Brakes

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

• Type - Shoe.
• Brake actuation - mechanical and pneumatic option.
• Train driver crane No. 394 with air distributors equipped with auxiliary brake No. 254.
• Handbrake providing 320 kN pressure on the axle.
• Number of air/manual assembly axles – 4/2.
• The efficiency of the brake cylinders is 0.38 MPa.

Cab

The carts are attached to the frame by spring suspension, which provides good maneuverability. The engine compartment is equipped with double doors and a removable roof, which allows you to freely enter the compartment for repair work.

The driver's cab complies with the requirementsGOST-70, has a reduced level of noise and vibration, while meeting all the minimum requirements for sanitary standards. Control and management devices are located as conveniently as possible, which makes it possible to drive the locomotive to one person. All recommended action guides are duplicated on the dashboard in the form of light signals.

In closing

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

It is worth noting that all instances of the locomotive in question were successfully operated on the roads of the post-Soviet space. They are highly maintainable and rarely fail without the possibility of recovery. Some modifications can still be found, mainly on the access roads.