The main function of the compression piston ring on a combustion engine is to provide a seal. In addition, the piston ring also has functions related to oil and lubrication regulation and heat transfer from the piston to the cylinder wall. As such, the compression ring largely determines the overall efficiency of your engine and must continue to function under extreme conditions.
Any leaks occur along the contact surface, side surfaces and the lock of the piston ring. In order to prevent this ‘leakage’ and to guarantee it is gastight, good contact with the cylinder wall and the correct contact pressure is extremely vital.
The accuracy of the ring in terms of tolerance range is important. The area where the ring meets is called the “lock”. In many engines the version of the lock is type: butt joint. Special types locks, such as gastight cuts, are used where even higher demands are placed on the seal.
This contact pressure is partly achieved by the internal tension of the piston ring and, in some cases, by a built-in expansion ring. However, a large part of the contact pressure is obtained by the gas pressure that presses against the ring from the rear, as you can see above.
We will gladly help you find the right compression ring for your application. Below you can see several types of compression rings as IGI produces. This is a small selection of the many possibilities. Indo German Industries guarantees high quality piston rings through modern production methods and constant production evaluations.