How does the diesel engine run-in, use and power match

How does the diesel engine run-in, use and power match

(1) Generally, when a new or overhauled diesel generator must be run in 60 hours before it is officially used before it can be put into full load. To improve the working conditions of each moving parts of the diesel engine, improve the operating reliability and service life of the diesel engine.

(2) The run-in plan should be considered depending on the use of the diesel engine and the towing method. In principle, as the running-in time increases, the speed and load of the diesel engine are gradually increased in stages. During the entire running-in period, the load should be 50~80% of the 12-h calibration power, and the speed should not be greater than 80% of the calibration speed. However, the operation time should not be too long at the beginning of the running-in or under too small loads.

Note: Whenever the cylinder liner, piston, piston ring, connecting rod bearing and crook are replaced, short-term running-in should be carried out according to the above-mentioned running-in conditions.

Use of diesel engines:

(1) After the diesel generator set is put into normal use, it should always focus on the index values ​​of all instruments and observe the dynamics of the operation of the entire machine: it should be checked frequently in the cooling system and the liquid level of each part of the lubricant. If it is found that there is any inconsistent with the requirements or there is a leakage, it should be supplemented or the cause of inspection should be eliminated.

(2) During operation, especially when the load is suddenly reduced, attention should be paid to prevent the diesel engine from suddenly increasing the operation exceeding the specified value due to the failure of the speed controller. When such a situation occurs, emergency stop measures should be taken first and then the cause should be found.

Matching of diesel engine and working machinery power:

When choosing a diesel engine, users should not only consider the amount of power required by the matching working machinery, but also consider the load rate of the working machinery, such as intermittent use or continuous use. At the same time, the operating economy of the working machinery must be considered, that is, the working rationality of the load and the characteristics of the diesel engine must be reasonably matched.

Therefore, the correct calibration of diesel engine power and the reasonable matching of diesel engine and working machinery characteristics are the prerequisites for ensuring the reliability, long life and economic operation of the diesel engine. Otherwise, the diesel engine may overload and cause unnecessary failures; or the load power is too small, and the diesel engine power cannot be fully utilized, which is neither economical nor easy to cause problems such as engine oil.