Brief description of internal combustion locomotive?
The internal combustion locomotive is a locomotive that uses an internal combustion engine as the prime mover to drive the wheels through a transmission. According to the type of internal combustion engine used in the locomotive, it can be divided into diesel locomotive and gas turbine locomotive. In China, internal combustion locomotives are generally referred to as diesel locomotives when introducing internal combustion locomotives because of the use of diesel engines (Fig. 4.3_01 Schematic diagram of the structure of an internal combustion locomotive with electric drive).?
When the fuel of a diesel engine is burned in the cylinder, the resulting high-pressure, high-temperature gas expands in the cylinder, pushing the piston to reciprocate and changing the reciprocating motion into a rotary motion through the crankshaft, so that the thermal energy of the fuel is converted into mechanical work. Diesel engine power transmission to the transmission device, through the diesel engine, transmission control and regulation, will adapt to the operating conditions of the locomotive output speed and torque and then sent to each axle gear box to drive the locomotive wheels, so that the locomotive operation, the dynamic wheels generated by the periphery of the wheel traction force transmitted to the frame, by the end of the frame of the car hook into the hook traction to drag or push the vehicle.
From the working principle of the internal combustion locomotive can be seen, the basic structure of the internal combustion locomotive is composed of diesel engine, transmission, car body walking part, auxiliary equipment, braking equipment, control equipment and other parts of the?
The diesel engine is the power unit of the internal combustion locomotive, modern internal combustion locomotives generally use four-stroke high-speed or medium-speed diesel engine. In order to meet the needs of a variety of power, in the manufacture of diesel engines, the production of the same cylinder diameter and piston stroke, different cylinder number of series products. Small power is mostly inline type, high power is generally V-type, etc.. The so-called in-line type refers to the diesel engine cylinders arranged vertically, while the V-type cylinders into a V-shaped arrangement. Various diesel engines are expressed in certain models, such as 16V240ZL type diesel engine, said 16 cylinders V-type arrangement, cylinder diameter 240mm, with turbocharger and intercooler.
The internal combustion locomotive transmission device has two kinds of electric transmission and hydraulic transmission, both in the structural principle and the use of maintenance have a big difference.?
The internal combustion locomotive traveling section adopts the form of frame-type bogie. The bogie mainly bears the weight of the upper part of the locomotive, transmits the traction force and braking force, as well as moderates and absorbs various impacts and vibrations from the line to ensure the safe and smooth operation of the locomotive.
The role of auxiliary devices is to ensure the normal work and reliable operation of the diesel engine, transmission and traveling department. Mainly includes: fuel system, cooling system, oil piping system, air filter, compressed air system, auxiliary electrical equipment, etc.?
Braking equipment includes a set of air brake and hand brake. Electric drive locomotives add resistance braking device, hydraulic drive locomotives are equipped with hydraulic braking device.?
Control equipment mainly includes locomotive speed controller, reversing controller, automatic control valve and auxiliary brake valve. In order to ensure safety, it is also equipped with locomotive signaling and automatic stopping devices.?
The internal combustion locomotive has more obvious advantages, such as, higher locomotive efficiency, short locomotive preparation time, long continuous working time, less water consumption, suitable for water-scarce areas. Initial investment is less than the electric locomotive, locomotive crew labor conditions are good, but also facilitates multi-machine traction. But the biggest drawback of the internal combustion locomotive locomotive is the pollution of the atmosphere and the environment.