What are the three rings of the piston ring called?

The three rings of the piston ring are divided into two categories, the piston ring at the piston pin hole is a gas ring, and the other two rings are gas rings. The gas ring, also called the contraction ring, is mainly used to seal the piston to prevent steam from leaking from the cylinder, and can transfer heat from the top of the piston to the cylinder liner, and then the heat energy is taken away by the cooling circulating water. The other is the oil ring, which can actually store a part of automobile oil, wet the cylinder liner and scrape off unnecessary automobile oil on the cylinder liner.

Why is the piston ring white and black?

The color of piston gas ring is different, and the key is related to the material of gas ring. The surface of the white gas ring is generally plated with chromium, and the black gas ring is black because it is a green iron ring. Everything is all right. The first gas ring of the piston is a white ring, and the white ring is a barrel. No matter what running state the piston is in, it can cling to the inner hole of the cylinder.

The second gas ring is a black gas ring in the shape of a rectangular frame, which is often not placed in the position of the first gas ring. The key point is that the shaking of the rectangular frame ring will rub the cylinder cavity, and the air tightness is not very good.

How to maintain the piston ring?

1. Add high-quality automobile oil to the vehicle. Under the normal operation of the automobile engine, the piston ring will accompany the piston to move violently, and the actual effect of high-quality automobile oil lubrication will be better, which can reduce its damage to some extent.

2. Clean the dirt in the cylinder on time. Too many chemicals such as oil pollution and carbon deposition will endanger the normal operation of piston rings, aggravate the damage of cylinder liners, and even lead to engine cylinder pulling.

3. Piston rings shall be installed in pairs. If the piston ring and cylinder liner do not match, it will be very easy to cause deformation.