Why is the supercharger an assembly prone to failure on the engine of the road roller? Because the rated working speed of the supercharger is more than 130000 rpm, and it is at the outlet of the exhaust manifold, the temperature is very high (more than 800 ℃), and the inlet and exhaust pressures are also high, that is, high temperature, high pressure, high speed, so the requirements for lubrication, cooling and sealing of the supercharger are higher. In order to ensure the service life of the supercharger, the lubrication and cooling of the floating bearing of the supercharger should be guaranteed in the design. At the same time, the leasing personnel of Jinan roller believed that the following requirements should be met in the use:
① After the engine is started, it should run at idle speed for 3-5 minutes. Do not load it immediately to ensure the good lubrication of the supercharger. The main reason is that the supercharger is located on the top of the engine. If the supercharger starts to run at high speed immediately after the engine is started, the oil pressure will not rise in time to supply oil to the supercharger, causing the supercharger to be damaged due to lack of oil, and even burning the entire supercharger.
② The idle time should not be too long, generally not more than 10 minutes, which is easy to cause oil leakage at the compressor end.
③ Do not shut down the engine immediately before stopping. Idle for 3-5 minutes to reduce the speed of the supercharger and the temperature of the exhaust system, and prevent the failure of heat regeneration - oil coking - bearing burning. Frequent incorrect use will damage the supercharger.
④ The engine that has not been used for a long time (generally more than 7 days), or the engine with a new supercharger, should be filled with oil at the oil inlet of the supercharger before use, otherwise the life of the supercharger will be reduced or the supercharger will be damaged due to poor lubrication.
⑤ Regularly check whether there is looseness, air leakage and oil leakage at all connecting parts, and whether the oil return pipe is smooth. If any, it should be eliminated in time.
⑥ Ensure that the air filter is clean and replace it regularly as required.
⑦ Replace the oil filter regularly.
⑧ Regularly check the radial and axial clearance of the supercharger shaft. The axial clearance should not be greater than 0.15 mm. The radial clearance is: the clearance between the impeller and the pressure housing should not be less than 0.10 mm. Otherwise, special personnel should be invited for maintenance to avoid expanding the loss.
How can the supercharger on the roller engine be used safely? The above is the relevant content of the problem. I hope it can help you. If there is anything else, please come to our website http://www.ycgjglcl.com Ask!