Fundamental studies on scuffing between cylinder and piston ring Online publication date: Mon, 26-May-2014
by Y. Wakuri, M. Soejima, T. Yamamoto, M. Ootsubo
International Journal of Vehicle Design (IJVD), Vol. 9, No. 2, 1988
Abstract: The occurrence temperature of scuffing failure between a cylinder and a piston ring varies with the cylinder pressure, piston speed, liner or ring material and lubricant properties. A suitable device or method to investigate scuffing characteristics has not previously been developed. This paper describes the scuffing characteristics investigated, under a wide range of sliding velocity conditions similar to practical engines, with newly devised reciprocative slide test equipment. The main results are summarized as follows. 1) The scuffing temperature changes are drastically influenced by the sliding speed rather than by the contact pressure. 2) The scuffing resistance increases with a harder liner material, a narrower ring width or a higher oil viscosity with a slow sliding speed condition, and with a softer liner material or a lower oil viscosity with a fast sliding speed. 3) The scuffing resistance changes noticeably with the kind and quantity of the detergent-based additive.
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