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Several Methods of Preventing Fracture of Marine Cylinders

2022-11-17

 1. Improper operation of the diesel engine during work, or inadequate maintenance during the maintenance process, will cause the cylinder liner to break, mainly in the following aspects:
 
After the diesel engine has been working for a period of time, it is necessary to pay attention to recheck the bolt tightening force of the cylinder head and the force balance between each bolt, so as to avoid the increase of the vibration frequency and amplitude of the cylinder liner due to loose bolts, which will cause the cylinder liner to break. Fracture accidents occur due to unbalanced force between each bolt.
 
2. Do not overload the diesel engine for a long time, do not accelerate too fast, and do not increase the throttle too much, otherwise the intake air volume cannot meet the use requirements, resulting in a "cold burst" phenomenon, which will significantly deteriorate the stress on the cylinder liner and cause cracks in weak parts.
 
3. During the working process of the diesel engine, due to many factors such as the failure of the lubrication system and the viscosity of the lubricating oil, the oil film on the inner wall of the cylinder liner cannot be formed, and the piston ring and the inner wall of the cylinder liner form dry friction, and the piston ring and the piston skirt are directly glued. , Pull off the cylinder liner.
 
Therefore, we should pay attention to the maintenance of the lubrication system during daily maintenance, and we should also pay attention to the use of lubricating oils with different viscosities in different seasons.
 
4 The sudden addition of cooling water to the diesel engine at high temperature, or the frequent boiling of the boiler due to internal faults, etc., will cause the cylinder liner to deform, and almost all the factors that cause the deformation of the cylinder liner are the most fundamental reasons for the cylinder liner to break. We should pay great attention to this issue.