The piston ring is an important part of the piston connecting rod assembly. The piston connecting rod assembly is used to transmit the power obtained during the combustion process to the crankshaft. When the bearing is placed in the cylinder, the engine reciprocates during operation. It is transferred to the crankshaft and converted into rotary motion. Today we will take a look at the structure and function of the piston ring of a diesel power generation unit.
The structure of the piston ring
Piston rings are usually made of alloy cast iron, and their hardness is generally greater than that of the cylinder wall. In some engines, to improve the wear resistance of the piston ring, the working surface of the first ring is plated with porous chromium. The names of the parts of the piston ring are shown in the figure below. The diameter of the piston ring refers to the outer diameter of the cylinder in the compressed state. In the automatic state, the outer diameter of the ring is greater than the cylinder diameter
The upper and lower planes of the piston ring are called the end faces, the distance between the end faces is called the ring height, and the gap between the ring height direction and the ring groove is called the backlash: the outer surface of the ring is called the working surface, and the inner surface of the ring is called the back surface. The gap between the surface direction and the ring groove is called the back gap; the ring gap is called the opening or the opening gap. Under the condition of ensuring that the ring will not swell and die after being heated. The opening gap should be as small as possible.
