Copeland 68.1 piston is a reciprocating part in the cylinder block of an automobile engine. The basic structure of the Copeland 68.1 piston can be divided into top, head and skirt. The top of the piston is the main part of the combustion chamber, and its shape is related to the type of combustion chamber selected. Gasoline engines mostly use flat-top pistons, which have the advantage of small heat-absorbing area. There are often various pits on the top of a diesel engine piston, and its specific shape, location and size must be adapted to the requirements of the diesel engine's mixture formation and combustion.

The engine is like the "heart" of the car, and the Copeland 68.1 piston can be understood as the "hub" of the engine. In addition to being in a harsh working environment, it is also the busiest one in the engine, constantly running from the bottom dead center. Reciprocating motion to top dead center, from top dead center to bottom dead center, suction, compression, workmanship, and exhaust. The interior of the Copeland 68.1 piston is hollowed out, more like a cap. The circular holes at both ends are connected to the piston pin, the piston pin is connected to the small end of the connecting rod, and the large end of the connecting rod is connected to the crankshaft, which converts the reciprocating motion of the piston into the circumference of the crankshaft. sports.

Each Copeland 68.1 piston has three wrinkles on the skirt to accommodate two air rings and an oil ring, with the air ring on top. During assembly, the openings of the two air rings need to be staggered to act as a seal. The function of the oil ring is mainly to scrape off the excess lubricating oil splashed on the cylinder wall, and evenly scrape the lubricating oil. At present, the widely used piston ring materials mainly include high-quality gray cast iron, ductile iron, and alloy cast iron.

In addition, Copeland 68.1 piston rings have different surface treatments due to different positions. The outer surface of the first piston ring is usually chromed or sprayed with molybdenum to improve lubrication and wear resistance of piston rings. Other piston rings are mostly tin-plated or phosphating, mainly to improve wear resistance.

If the Copeland 68.1 piston ring is not installed properly or the sealing performance is not good, it will cause the oil on the cylinder wall to run up to the combustion chamber and burn with the mixture, causing the phenomenon of oil burning. If the fitting clearance between the piston ring and the cylinder wall is too small or the piston ring is stuck in the ring groove due to carbon deposits, the Copeland 68.1 piston may scratch the cylinder wall when it reciprocates up and down, which may cause damage after a long time. Deep grooves are formed on the cylinder wall, which is often referred to as the phenomenon of "pulling the cylinder". The cylinder wall has grooves and poor sealing, which will also cause oil burning. Therefore, the working state of the piston should be checked regularly to avoid the occurrence of the above two situations and ensure that the engine is in good operating condition.