[Analysis of the causes of Mitsubishi diesel engine broken crankshaft].
In the use of Mitsubishi diesel engines, the fracture of the crankshaft is a relatively common problem. As the core component of the engine, the fracture of the crankshaft will not only lead to damage to the engine, but also affect the normal operation of the entire mechanical equipment. This article will analyze the causes of Mitsubishi diesel engine broken crankshafts, aiming to help users better understand and prevent this failure.
1. Crankshaft materials and manufacturing problems.
The material quality and manufacturing process of a crankshaft have a critical impact on its strength and durability. If there are defects in the crankshaft material, such as impurities, bubbles, etc., or casting defects in the manufacturing process, improper heat treatment, etc., it may cause the crankshaft to break in use.
2. Overload operation.
When the engine is running under overload for a long time, the load on the crankshaft will increase greatly, resulting in stress concentration inside the crankshaft, which will cause the crankshaft to break. Especially in some machinery and equipment that requires high-strength, high-load operation, such as excavators, heavy trucks, etc., the risk of crankshaft fracture is higher.
3. Poor lubrication.
Lubrication of a crankshaft is essential for its proper functioning. If the lubrication system fails, resulting in poor lubrication of the crankshaft, increased frictional resistance, and a large amount of heat will be generated during the operation of the crankshaft, which will cause fatigue and damage to the crankshaft material, and eventually lead to the fracture of the crankshaft.
4. Improper installation and maintenance.
During the installation and maintenance of the crankshaft, if the operation is not done properly or the use of unsuitable accessories, it may lead to problems such as stress concentration or unbalanced operation of the crankshaft after assembly, and in the long run, it will lead to the fracture of the crankshaft.
Fifth, the use of the environment is harsh.
Under certain harsh environmental conditions, such as high temperature, high humidity, corrosive gases, etc., the corrosion and wear of the crankshaft will be exacerbated, resulting in its reduced strength and easy breakage. In addition, unreasonable use and maintenance habits will also affect the service life of the crankshaft and increase the risk of crankshaft breakage.
To sum up, there are many reasons why Mitsubishi diesel engines break their crankshafts. In order to prevent the occurrence of crankshaft fracture failure, users should pay attention to the following points in the process of use: first, ensure the quality of crankshaft manufacturing materials and the qualification of manufacturing processes; secondly, to avoid the engine overload for a long time; Third, regularly inspect and maintain the lubrication system; Fourth, operate in strict accordance with the installation and maintenance procedures; Finally, pay attention to the conditions of the use environment and maintain reasonable use and maintenance habits. Through the implementation of the above measures, the risk of Mitsubishi diesel engine crankshaft fracture can be effectively reduced and the service life of the engine can be prolonged.