The engine is like a car's "heart", and the piston engine can be understood as the "backbone", in addition to living in harsh working environment, it is the busiest one engine, constantly carried forward from the lower to the upper dead point dead, from TDC to BDC reciprocating motion, suction, compression, workmanship, the inside of the piston exhaust ...... hollowed design, more like a hat, both ends of the piston hole connection pin, connecting rod small end piston pin, connecting rod is connected to the crankshaft, the piston reciprocating motion into circular motion of the crankshaft.



     Each piston skirt body part has three wrinkles is to install two gas rings and one oil ring, and the gas ring on top. In assembly, the two need to stagger the opening of gas ring, play a role in sealing. The main function of the oil ring is splashed on the cylinder wall scraping excess oil and lubricants scrape cloth evenly. The widely used piston ring materials are quality gray iron, ductile iron, alloy cast iron and so on.

 

     Further, since the piston ring in different positions, are used for surface treatment is also a difference, wherein the first outer circumferential surface of the piston ring plated with chrome or spray typically molybdenum process, mainly to improve the lubrication of piston rings and improve durability. Other rings Metropolitan tinned or phosphate processing, mainly to improve the wear resistance.



"As per cylinder piston working environment is slightly different, so the degree of difference between the piston coke."



"Top of the piston coke"

     If improperly installed piston rings or seal is not good, it will lead to the oil on the cylinder wall on sneaked into the combustion chamber and mixed with the combustion air, causing the phenomenon of burning oil. If the piston ring and cylinder wall or piston ring gap is too small to be stuck due to carbon in the ring grooves, etc., the reciprocating motion of the piston up and down when it might scratch the cylinder wall, long after the cylinder deep groove formed in the wall, it is often said that "pull cylinder" phenomenon. With the grooved cylinder walls, sealing bad, it will also cause burning oil situation. Should therefore regularly check the working status of the piston, to avoid the occurrence of the above two situations, ensure that the engine is running in good condition.