Goetze Taper Faced Piston Rings for 4-Stroke Large Bore Engines
Due to the tapered running face, the ring contacts the cylinder bore with its bottom outer edge, which shortens running-in and improves oil scraping. Taper faced rings are chiefly installed in the second groove in mainly natural gas engines.
A common feature of a piston ring is a slot with a non-circular design. This non-circular form is necessary so that the piston ring exerts an exactly defined pressure over the whole ring circumference when inserted in the circular cylinder. This pressure can be distributed evenly over the circumference; however, a negative oval form is generally aimed for. This means that the pressure in the area of the slot is lower than on the remaining circumference which avoids increased pressure on the slot during operation of the engine.
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