In a conventional application, there are three rings per piston. The top ring is called the compression ring. Its purpose is to seal the combustion gas pressure, transfer heat from the piston to the ...

If asked what you wanted for piston rings in your engine build, would you know how to answer? Piston rings have the most important job in your engine. We will get arguments on this one because there ...

SAE International Journal of Engines, Vol. 9, No. 3 (September 2016), pp. 1807-1824 (18 pages) ABSTRACT The oil control ring (OCR) controls the supply of lubricating oil to the top two rings of the ...

Engine building is technically a science, but the truth is that there is just as much art as there is science. Where most might think that the “art” part of engine building is in the design and ...

CARS.COM — Vehicles affected by service bulletin: The problem: Under certain operating conditions, the engine in certain Accords may develop deposits on the piston’s oil control rings, which may lead ...