Characteristics Of Piston With Pressure Ring And One Narrow Single-Rail Oil Ring

Proposed at Musashi I.T. Engine research Laboratory in order to realize a smaller size and lower friction piston was a new piston ring parkage, which consisted of one pressure ring and one narrow single-rail oil ring. The new package has tested for two different types of gasoline engines to examine its influences on blow-by, piston temperature, piston friction and oil consumption. Efforts have been also made to improve these characteristics of the package and have resulted in its promising prospects.