Ring design
Before considering malfunctions and finding out when replacement or decarbonization of oil scraper rings is required, you need to know their design features. One-piece parts are no longer produced today, as they are no longer popular. Such parts have increased rigidity, which is why they do not adhere well to the surface and do not remove oil well. Today, parts are produced that consist of two or three parts. Such parts are called “stacked oil scraper rings”.
The first option consists of the oil scraper ring itself and a spiral spring. The advantages of such a product: it is quite flexible, which is why it fits tightly to the walls of the cylinder. The spring is pressed against the ring so tightly that the part looks solid. Three-piece rings consist of the following elements: a spacer spring and two steel plates. They are usually used in cars with gasoline engines. The advantage of this design is that it fits as tightly as possible to the cylinder.
Typical piston ring faults
During operation of an internal combustion engine, pistons and rings gradually wear out and then become unusable. The main malfunction is an increase in the gap between the ring and the cylinders, which causes problems with starting the engine, fuel consumption increases, power decreases sharply, and excess pressure forms in the oil sump.
