ICE ENGINE CYLINDER PISTON SEAL Russian patent published in 2009 - IPC F02F5/00 

FIELD: engines and pumps.

SUBSTANCE: invention relates to machine building, particularly to piston-type ICE. The proposed ICE cylinder piston seal comprises two resilient seal rings with inclined outer edges abutting on the cylinder wall, arranged unidirectional in one groove of the piston and representing one-piece rings with invariable thickness over their cross section. The rings outer inclined edges form, in the area they abut on the cylinder wall, an enclosed inner chamber constricted, on the piston side, by additional space ring furnished with two diametrically-opposite holes for oil to circulate inside the said inner chamber.

EFFECT: reduced fuel consumption, improved ecology.

1 dwg