Causes of Cracking of Diesel Engine Cylinder Crack and Preventing
2017-02-24 10:14:52
Winter temperature is low, the car crane diesel engine cylinder head prone to crack leakage. The main reasons are the following:
1, after the car crane to start adding water. Diesel engine starts, the machine temperature immediately increased, if the time to join the cooling water, the cylinder block and cylinder head cooling, it will shrink due to shrinkage.
2, after the shutdown, did not put the cooling water. Machine water frozen into ice, the volume increases, the cylinder block and cylinder head burst.
3, diesel engine for a long time running, the machine temperature is high, immediately after the release of high temperature water. Will lead to high temperature parts encountered cold air and cracking.
4, the diesel engine running, the cooling water or water tank boilers temperature is too high, suddenly joined the cooling water. Cylinder and cylinder head overcooling can also cause cracking.
5, the use of decompression machine downtime, so that the high temperature of the cylinder head suddenly encountered cold air and lead to cracking.
To prevent all kinds of truck crane cylinder block and cylinder head cracking the following methods:
1, start the diesel engine before the water tank should be added to the warm water, hot winter season to perfusion hot water 2 to 3 times, to be discharged from the water out of the water about 30 ~ 50 ℃ start better.
2, car crane diesel engine overheating serious water shortage, the diesel should let the low speed idling 10 to 15 minutes, and then slowly add the cooling water.
3, car crane diesel engine running for a long time, after stopping should wait for half an hour or so, the temperature dropped to 40 ~ 50 ℃ when the cooling water. Put the best after the water with fine iron wire poke through the water valve switch, to prevent the sediment plug the drain valve.
1, after the car crane to start adding water. Diesel engine starts, the machine temperature immediately increased, if the time to join the cooling water, the cylinder block and cylinder head cooling, it will shrink due to shrinkage.
2, after the shutdown, did not put the cooling water. Machine water frozen into ice, the volume increases, the cylinder block and cylinder head burst.
3, diesel engine for a long time running, the machine temperature is high, immediately after the release of high temperature water. Will lead to high temperature parts encountered cold air and cracking.
4, the diesel engine running, the cooling water or water tank boilers temperature is too high, suddenly joined the cooling water. Cylinder and cylinder head overcooling can also cause cracking.
5, the use of decompression machine downtime, so that the high temperature of the cylinder head suddenly encountered cold air and lead to cracking.
To prevent all kinds of truck crane cylinder block and cylinder head cracking the following methods:
1, start the diesel engine before the water tank should be added to the warm water, hot winter season to perfusion hot water 2 to 3 times, to be discharged from the water out of the water about 30 ~ 50 ℃ start better.
2, car crane diesel engine overheating serious water shortage, the diesel should let the low speed idling 10 to 15 minutes, and then slowly add the cooling water.
3, car crane diesel engine running for a long time, after stopping should wait for half an hour or so, the temperature dropped to 40 ~ 50 ℃ when the cooling water. Put the best after the water with fine iron wire poke through the water valve switch, to prevent the sediment plug the drain valve.