All You Need to Know About the Piston Ring

Basically, piston ring seems metallic split ring, which is combined with the outer diameter of a piston. It is attached to the internal combustion engine, or it can be attached to the steam engine. There are many functions of the piston ring in the engine. Piston rings seal the combustion chamber, which provides the benefit of minimal gas loss; it provides a clear path for heat transfer to the thin wall. Piston rings also help maintain the complete quantity of oil between the cylinder wall. The compressor ring and piston ring are the engine parts.

What Is the Design of The Piston Ring?

Generally, the piston ring has been designed to decrease the gap between the Piston and the cylinder wall. When this gap gets too small, thermal expansion can change the Piston size, which is dangerous for the engine. If a large gap has been created, it can cause insufficient sealing for the piston ring and cylinder walls. It will result in excessive blow-by and low pressure on the cylinder. Piston ring lubrication is a little bit harder, and it helps to improve the quality of motor oil.

The oil is resistant to high temperature and severe conditions with more sliding speed contact. The lubrication is a little harder for the movement of rings; it does not consist of continuous rotation; it does oscillate rotation. Because of the lesser amount of piston movement, the ring can stop and change the direction. The compressor ring, located above the piston ring, provides the sealing and prevents gas leakage.

How Is the Construction of The Ring?

The ring is an aerospace engineer. Its design looks like a keystone or rectangular shape cross-section. The Upper ring consists of the barrel profile, which works for the periphery. The lower ring is consistent on a taper which looks like the Napier facing. Most of the engines used plane-faced rings in the past. But nowadays, most of the engines use tapper facing for the upper ring.

Generally, the oil control rings consist of a single part of cast iron, or they can also consist of different steel pieces. It has a helical spring that makes the tension, which is required for a narrow seal. The different pieces of steel control rings contain two thin types of steel rings.

History Of Piston Ring

The combustion chamber has been used in modern steam engines. The function of that is to cause high frictional resistance, and it cannot provide a very effective seal. In Neil Snodgrass used a piston ring in the cylinders of the steam engine. He was a famous Glasgow engineer, and he was also a mil owner. The primary function of springs is to seal the steam tightly bound. In John Rams bottom invented a metallic split ring. Piston rings help the upper and down movement of the cylinder. That function happens because of intrinsic load, and it also can be a load of gas. They were created with resistant materials like steel and cast iron to reduce that. That is treated for increasing the wear resistance.
 

• Taiwan ser piston ring manufacturer

PistonRings

A piston ring must have both spring-like tension and the properties to become a true circle when closed. In the combustion chamber of engine, NPR's piston rings serve to seal combustion gas, control lubricating oil, dissipate heat, and prevent wear and seizure under the severe conditions of operation. Now that engines are required to be more compact, lighter, and more sophisticated in performance, the choice of piston ring materials has been widened to include steel in addition to the traditional cast iron. Moreover, in order to enhance their wear resistance and durability, they also undergo various surface treatments including nitriding and PVD treatment.

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For gasoline engines

• 1st ring :
  Steel + Cr
• 2nd ring :
  Cast iron
• Oil ring :
  Nifflex-S (3 piece type)

• 1st ring :
  Steel + Cr
• 2nd ring :
  Steel + Nitriding
• Oil ring :
  Nifflex-H (3 piece type)

• 1st ring :
  Steel + PVD
• 2nd ring :
  Cast iron
• Oil ring :
  2 piece type with high traceability + PVD

In these environmentally aware times, progress is being made in the introduction of low-emission cars for NOX and HC reductions and in the control of fuel consumption for CO2 reduction. To achieve these purposes, the following techniques have been developed and incorporated in the design of piston rings.
- Piston ring combination for low-friction
- Thinner width compression-and oil control rings
- Advanced surface treatments, and high-durability, low-cost materials
- Optimum design through tuning techniques