Piston for internal combustion engine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsYoshiaki Tatematsu, Atsuo Tanaka
Life of this patent
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Abstract
A piston for internal-combustion engines, reinforced at least at either the shoulder of the skirt or the piston boss thereof by a composite reinforcement consisting of a layer of inorganic long filaments and a layer or layers of inorganic staple short fibers or whiskers. The inorganic filaments are one or a combination of any of carbon, graphite, alumina, silicon carbide and glass, while the inorganic staple fiber or whiskers are silicon nitride whiskers, mineral fibers, potassium titanate whiskers, carbon fibers or graphite fibers, or a combination of those whiskers and/or fibers.
Claims6
A piston for an internal-combustion engine, comprising a piston body made of aluminum or aluminum alloy, including a piston head portion, a piston skirt portion and a piston boss portion, provided with a composite fiber reinforcement consisting of a first layer of inorganic long filament, and a second layer or layers of inorganic staple short fibers substantially enclosing said first layer, said composite fiber reinforcement being arranged within the piston body, at least in either said piston boss or a shoulder portion of the piston skirt.
Dependencies are inferred from the claim text.