How to control the normal temperature of diesel generator oil?
2021-07-10
Why is the oil temperature too high? The high oil temperature of diesel generator is generally caused by the failure of cooling system, the unclean lubrication system, the dirty oil, the air leakage of compression system, the poor working environment, the failure of oil temperature control thermostat and the use of inferior oil. Today, Raines will give you a detailed introduction.
1. The lubrication system is not clean, the oil is too dirty, and the oil circuit is blocked. For example, the primary oil filter is blocked, the resistance increases, and some or even all of the oil can not enter the main oil passage directly from the safety valve through the primary oil filter and cooler, resulting in high oil temperature. This is usually caused by improper maintenance, untimely use of substandard oil, wrong brand oil, dirty oil, etc. Therefore, it is generally required to clean the primary oil filter (if installed) after every 50 ~ 60 hours of diesel engine operation.
2. When the cooling system fails, such as excessive and thick scale on the cylinder block and cylinder head water jacket, poor heat dissipation, and rising temperature of diesel engine, the engine oil heat load will increase and the oil temperature will rise. At this time, the scale should be completely removed and soft water should be added. If the oil cooler does not work properly, the oil temperature will also rise.
3. Yanan's answer: if the diesel generator is overloaded for a long time, or the oil pump is damaged, or the clearance between the main bearing and connecting rod bearing is too small, in addition, if the oil level is too high, the crankcase vent is blocked, and the oil thermometer fails, the oil temperature will rise.
4. Air leakage in the compression system, high temperature gas into the crankcase, so that the oil temperature increases. In this case, the sound similar to knocking cylinder can be clearly heard at the crankcase, and a large amount of gas will come out. The direct cause of the leakage is that the piston ring is not close to the cylinder wall, and part of the high temperature gas rushes into the crankcase at the beginning of the working stroke; The piston ring is not elastic enough or the opening clearance is too large, or the openings of each ring coincide during assembly, resulting in leakage; Due to wear, the relationship between cylinder wall and piston and piston ring deteriorates, which will also cause unsealing and leakage.
5. Oil quality. If the diesel generator chooses inferior oil, the oil temperature will be too high.
6. The engine oil thermostat is faulty. If the oil temperature control thermostat fails, it cannot be fully opened, because it is a small cycle, so the oil temperature is very high.
7. Due to the poor working environment, more sand and dust, after long-term use of the diesel generator, a thick layer of putty will stick on the engine body and oil pan, which makes it difficult to dissipate heat and leads to high oil temperature. At this time, you should thoroughly remove the putty, usually pay attention to keep the body and oil pan clean.
1. The lubrication system is not clean, the oil is too dirty, and the oil circuit is blocked. For example, the primary oil filter is blocked, the resistance increases, and some or even all of the oil can not enter the main oil passage directly from the safety valve through the primary oil filter and cooler, resulting in high oil temperature. This is usually caused by improper maintenance, untimely use of substandard oil, wrong brand oil, dirty oil, etc. Therefore, it is generally required to clean the primary oil filter (if installed) after every 50 ~ 60 hours of diesel engine operation.
2. When the cooling system fails, such as excessive and thick scale on the cylinder block and cylinder head water jacket, poor heat dissipation, and rising temperature of diesel engine, the engine oil heat load will increase and the oil temperature will rise. At this time, the scale should be completely removed and soft water should be added. If the oil cooler does not work properly, the oil temperature will also rise.
3. Yanan's answer: if the diesel generator is overloaded for a long time, or the oil pump is damaged, or the clearance between the main bearing and connecting rod bearing is too small, in addition, if the oil level is too high, the crankcase vent is blocked, and the oil thermometer fails, the oil temperature will rise.
4. Air leakage in the compression system, high temperature gas into the crankcase, so that the oil temperature increases. In this case, the sound similar to knocking cylinder can be clearly heard at the crankcase, and a large amount of gas will come out. The direct cause of the leakage is that the piston ring is not close to the cylinder wall, and part of the high temperature gas rushes into the crankcase at the beginning of the working stroke; The piston ring is not elastic enough or the opening clearance is too large, or the openings of each ring coincide during assembly, resulting in leakage; Due to wear, the relationship between cylinder wall and piston and piston ring deteriorates, which will also cause unsealing and leakage.
5. Oil quality. If the diesel generator chooses inferior oil, the oil temperature will be too high.
6. The engine oil thermostat is faulty. If the oil temperature control thermostat fails, it cannot be fully opened, because it is a small cycle, so the oil temperature is very high.
7. Due to the poor working environment, more sand and dust, after long-term use of the diesel generator, a thick layer of putty will stick on the engine body and oil pan, which makes it difficult to dissipate heat and leads to high oil temperature. At this time, you should thoroughly remove the putty, usually pay attention to keep the body and oil pan clean.
The temperature control of diesel generator oil needs to start from the above seven aspects, to ensure the normal operation of the cooling system and lubrication system, to ensure that the compression system does not leak, and to require that the working environment of the diesel generator set is free of wind, dust, etc., so as to keep the oil temperature of the generator set at normal temperature and ensure the normal operation of the generator set. Have you learned? If you want to know more about diesel generator, you can browse the website of Raines. We will provide you with more professional generator set service.
Source: Mindong family