The engine is like the "heart" of the car, and the 8FC 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 going from bottom dead center to Top dead center, reciprocating motion from top dead center to bottom dead center, suction, compression, workmanship, exhaust... Generally speaking, the interior of the piston is hollowed out, more like a hat, two The circular hole at the end is connected with the piston pin, the piston pin is connected with the small end of the connecting rod, and the large end of the connecting rod is connected with the crankshaft, which converts the reciprocating motion of the piston into the circular motion of the crankshaft. The piston is so important, so what is the engine 8FC piston made of?

8FC piston is a reciprocating part in the cylinder block of an automobile engine. The basic structure of the 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 skirt of each 8FC piston has three wrinkles for installing two air rings and an oil ring, and the air ring is 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, 8FC 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, mainly to improve lubrication and wear resistance of the piston ring. Other piston rings are mostly tin-plated or phosphating, mainly to improve wear resistance.