PISTON FOR INTERNAL COMBUSTION ENGINE Russian patent published in 1994 - IPC

FIELD: engine engineering. SUBSTANCE: whole of a head of a piston is made of a composition material including combustion chamber and zone of groove for compression rings. Mullitesiliceous fibres, which contain 1-4 vol. % of non- fiber component, are used as strengthening armored fibers. In the zone of the combustion chamber the fibers are oriented tangentially to piston axis and have a ratio of length to diameter equal to 27-30 and in the zone of the groove the fibers are parallel to axis of the piston and a ratio of length to diameter is equal to 10-13. EFFECT: improved design. 2 dwg