Gasoline generator fault and what are the reasons?
For the generator set just shipped, it must have a certain working ability and the necessary durability. The so-called working ability refers to the main working performance given to the generator set during design and manufacture, such as the output power of the generator set, the fuel consumption rate of the engine, and the noise level of the generator set. Durability refers to the use time of the unit to maintain its working capacity within a certain range. The deterioration of the working ability and durability of the generator set is the fundamental sign of its failure. In other words, the technical status of each part of the generator set will change after a certain period of operation. When this change exceeds the permissible technical range and affects the working performance of the generator set, it is said that the generator set has failed.
The generator set consists of three parts: the engine, the AC synchronous generator and the control box (screen). Among them, the engine is part of the power generated by the unit and is most likely to fail. Practice has proved that the reasons for the failure of the unit are various, but in the final analysis, it is not only the internal and external causes.
Gasoline Generator Failure Cause
First, the internal causes of failure
1) Material and oil properties
In the process of designing and manufacturing, materials should be correctly selected according to the nature and characteristics of the parts of the generator set. Improper material selection, inconsistent materials, and inappropriate substitutes are the main causes of wear, corrosion, deformation, fatigue damage, cracking, and aging. The properties of various materials and fuels used in internal combustion engines can be summed up in three aspects: physical properties, chemical properties, and mechanical properties. Many failures of the internal combustion engine are the result of these properties that are due to external factors. If the metal material is subjected to excessive force, it will deform and crack or even break. It will oxidize under high temperature and will cause fatigue damage under various loads; non-metallic materials will cause aging; the acid substances contained in the oil will have metal Corrosion, and will make oil deterioration.
2) Structural features of the machine
Each system component of the internal combustion engine has its own characteristics in its structural form. In the work, external factors often work through these features, causing the related parts to fail. For example, due to the structural characteristics of the engine water jacket, under the effect of high temperature, the cooling water can easily form scale on the outer wall of the cylinder liner, which affects the cooling effect of the cylinder jacket.
3) Working characteristics of parts
Direct contact and relative movement between the wear and tear due to friction, for example, the piston ring of the internal combustion engine directly in contact with the cylinder during the work process, the piston ring in the cylinder for high-speed reciprocating linear motion, resulting in cylinder wear. Mechanical parts with severe temperature changes during operation are deformed and cracked due to thermal stress. For example, in the engine working process, due to the effect of high temperature on the cylinder block and cylinder head, the internal stress is redistributed to achieve a new balance, resulting in The warpage of the cylinder block and the cylinder head plane.
Generator failure
Second, the external causes of failure
1) Improper use
The user did not follow the operating instructions and use the machine. Such as frequent low-speed operation, rapid increase in load without warming up, low oil pressure, etc. will accelerate the wear of the parts; long working hours, excessive load changes, long-term overload operation, etc. can also cause premature damage of parts.
2) Poor maintenance
In the maintenance of the machine, the work was not completed in strict accordance with the prescribed technical requirements, or an incorrect operation method was taken, resulting in human error. In normal maintenance, it is necessary to replace the oil in a timely manner, and regularly clean the scales of the air cleaner and the water tank. According to the requirements of the daily maintenance of the machine and the first, second and third level maintenance.
3) The maintenance quality is not high
During the repair process, if it is improperly processed and does not meet the technical requirements for repairs, such as improper fitting gaps (or public benefits) of parts, insufficient surface roughness, and unclean cleaning during assembly, the unit will cause problems during use. In the assembly process, the accuracy of the mutual position between the parts is also important. If it fails to meet the requirements, it will cause additional stress, produce adverse effects such as eccentric wear, and accelerate the failure of the parts.
Ito Power Co., Ltd. reminds users that establishing a reasonable maintenance system and strictly implementing the technical maintenance and operation procedures of the generator set are important conditions for ensuring the reliable operation of the generator set and improving its service life. In addition, maintenance personnel need to be regularly trained to improve their professional quality and level.
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Shanghai Ito Power Co., Ltd. Main : Ito Gasoline Generator , Ito Diesel Generator , Ito Small Pump , Ito Digital Generator , Ito Electric Welding Machine
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