High Temperature Causes of Diesel Engines

For mechanical equipment powered by diesel engines, if the temperature is high for a long time, it will have a certain impact on the good running state of the whole machine. The internal performance will cause serious failures such as lubrication failure, increased wear and tear of parts, cylinder pulling, and burning of cylinder gaskets(overhaul gasket kit). Therefore, we need to understand the reasons for the high temperature of the diesel engine in order to better make a simple preventive plan.Excessive work for a long time will cause increased fuel consumption, increased internal heat dissipation, and boiling of cooling water. The best way to deal with this situation is to avoid overloading it for long periods of time.

It is very important that the amount of liquid inside the mechanical equipment meets the standard. Usually, if the amount of liquid is insufficient, especially the insufficient coolant, the heat dissipation effect of the equipment will be reduced, thus causing the diesel engine to overheat. For the high temperature caused by this situation, as long as the main inspection work is done in the daily use process, the insufficient liquid can be replenished in time.

Whether the heat dissipation of mechanical equipment is good, the cleanliness of the surface is good, whether the engine fan parts is good to play a good heat dissipation effect, etc., may cause high temperature failure of the diesel engine.In order to prevent this from happening, as long as we do a good job of inspection in daily use, we can find some abnormal conditions in time and do repair or replacement work.

The advantages of diesel engines are high torque and good economic performance. Each working cycle of a diesel engine also experiences four strokes of intake, compression, power, and exhaust. However, because the fuel used in diesel engines is diesel, its viscosity is higher than that of gasoline, it is not easy to evaporate, and its auto-ignition temperature is lower than that of gasoline, so the formation and ignition method of combustible mixture are different from those of gasoline engines. The main difference is that the mixture in a diesel engine cylinder is compression ignited, not ignited. When the diesel engine is working, it is air that enters the cylinder liner. When the air in the cylinder is compressed to the end point, the temperature can reach 500-700 ℃, and the pressure can reach 40-50 atmospheres. When the piston is close to the top dead center, the high-pressure pump on the engine injects diesel oil into the cylinder with high pressure, and the diesel oil forms fine oil particles, which are mixed with the high-pressure and high-temperature air, and the diesel mixture burns by itself, expands violently, and generates explosive force, which pushes the piston downward to do work. , the temperature at this time can reach 1900-2000 ℃, the pressure can reach 60-100 atmospheres, and the torque generated is very large, so diesel engines are widely used in large diesel vehicles

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