Views: 0 Author: Site Editor Publish Time: 2021-03-16 Origin: Site
Nowadays, diesel engine has been more and more widely developed in automobile, shipbuilding and the whole industry. But many people do not know understand its working principle and pay attention to the daily simple maintenance, resulting in various problems in the use process. So how to maintain the diesel engine?
Here is the content list:
What is the working principle of diesel engine?
How to stop oil leak in diesel engine?
How to maintain the diesel engine?
Each working cycle of diesel engine goes through four strokes: intake, compression, work and exhaust. The diesel engine inhales pure air in the intake stroke. At the end of the compression stroke, the diesel oil is injected into the cylinder through the fuel injector to increase the oil pressure to more than 10MPa by the fuel injection pump, and is mixed with the compressed high-temperature air in a very short time to form a combustible mixture. Due to the high compression ratio of diesel engine, the air pressure in the cylinder can reach 3.5-4.5mpa at the end of compression, and the temperature can reach 750-1000k, which greatly exceeds the spontaneous combustion temperature of diesel. Therefore, after diesel is injected into the cylinder, it will ignite immediately after mixing with air in a very short time. The air pressure in the cylinder rises rapidly to 6-9mpa. Driven by the high pressure gas, the piston moves downward and drives the crankshaft to rotate to do work, and the exhaust gas is also discharged into the atmosphere through the exhaust pipe.
Oil leakage is a common disease of automotive engine, which not only pollutes the body, wastes fuel, but also easily leads to accidents. The following preventive measures can be taken:
(1)Pay attention to the function of cushion. If the cushion does not meet the requirements in material, size, thickness or installation, it will cause oil leakage or accident.
(2)Replace the failed rubber self tightening oil seal in time. Most rotating parts of diesel engine, such as crankshaft and high-pressure oil pump shaft, are equipped with rubber oil seals with self tightening springs. After long-term use, these rubber parts will lose their elasticity due to aging and deterioration, and can not play the role of oil seals.
(3)Replace and repair the main bearing bush in time. When the clearance between the main bearing bush and crankshaft is too large, the seal performance will be greatly reduced due to the impact of crankshaft, resulting in oil leakage.
In order to prolong the service life of diesel engine, it is necessary to strengthen the maintenance of air filter, lubricating oil filter and fuel filter, and give full play to their functions. Clean once every certain working hour. If any damage is found, replace it immediately. When diesel engines are used in different seasons, the crankcase and lubricating surfaces should also be cleaned. And pay attention to add lubricating oil according to regulations in use.
There are many precautions in the process of using diesel engine. If you want to know more information or get maintenance service, please contact xxx company.