How to match the running-in, use and power of diesel engines

How to match the running-in, use and power of diesel engines

(1) Generally, a new or overhauled diesel generator must be run in for 60 hours before being put into full load use. To improve the working conditions of various moving parts of the diesel engine and increase the operational reliability and service life of the diesel engine.

(2) Running-in should consider the specific running-in plan depending on the purpose of the diesel engine and the towing method. In principle, as the running-in time increases, the speed and load of the diesel engine should be gradually increased in stages. During the entire running-in period, the load should be 50 to 80% of the 12-hour calibrated power, and the speed should not be greater than 80% of the calibrated speed. However, in the initial stage of running-in, the running time under idle operation or too small load should not be too long.

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

Diesel engine use:

(1) After the diesel generator set is put into normal use, you should always pay attention to the indicator values ​​​​of all instruments and observe the dynamics of the entire machine operation: Always check the cooling system and the lubricating oil levels of each part. If any discrepancies are found or appear In case of leakage, supplement should be provided immediately or the cause should be checked to eliminate the cause.

(2) During operation, especially when the load is suddenly reduced, care should be taken to prevent the diesel engine from suddenly increasing beyond the specified value due to governor failure. When such a situation occurs, emergency shutdown measures should be taken quickly first, and then Find out why.

Matching of diesel engine and working machinery power:

When selecting a diesel engine, users should not only consider the power required by the matching working machinery, but also the load rate of the working machinery, such as whether it is used intermittently or continuously. 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 the diesel engine power and the reasonable matching of the characteristics of the diesel engine and the working machinery are the prerequisites for ensuring the reliability, long life and economical operation of the diesel engine. Otherwise, the diesel engine may be overloaded and cause unnecessary failures; or the load power is too small, The power of the diesel engine cannot be fully utilized, which is uneconomical and prone to problems such as engine oil.