The cylinder liner is the abbreviation of the cylinder liner, which is embedded in the cylinder barrel of the cylinder block. Cylinder liners are divided into two categories: dry cylinder liners and wet cylinder liners. The cylinder liner whose back side does not contact the cooling water is called a dry cylinder liner, and the cylinder liner whose back side is in contact with cooling water is a wet cylinder liner. The dry cylinder liner has a thinner thickness, simple structure and convenient processing. The wet cylinder liner is in direct contact with the cooling water, so it is beneficial to the cooling of the engine, and is conducive to the miniaturization and weight reduction of the engine.
Diesel engine scuffing: refers to the phenomenon that the piston assembly of the diesel engine and the working surface of the cylinder interact violently (generated from friction), resulting in excessive wear, roughening, scratches, abrasions, cracks or seizures on the working surface. Cylinder scuffing is Different degrees of adhesive wear under lubricated conditions. When the cylinder is lightly pulled, the cylinder liner and piston assembly will be damaged. , so as to cause major accidents. Therefore, analyze the formation mechanism of diesel engine cylinder failure, find out early prediction and correct countermeasures, correctly manage and use diesel engines, improve reliability and prolong service life, and improve management personnel's troubleshooting Resilience is very important. Reasonable use and attention to maintenance (regular inspection) can also reduce the failure of diesel engine cylinders.
Cylinder knocking symptoms Diesel: The symptoms of cylinder knocking of diesel generators during operation are: from medium speed to low speed, there will be a heavy knocking sound, black smoke will be emitted from the exhaust pipe of diesel generator sets, and there will be gunshots or outwards from time to time. Spitfire, overheated engine block.
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