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US 6,186,478 B1Granted
Al alloy poppet valve
AssigneeFuji Oozx Inc.
InventorsAkihiro Hamada, Hiroaki Asanuma
Life of this patent
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Abstract
An Al alloy poppet valve is used in an internal combustion engine and has a valve head and a valve stem. At least the valve head is made of non-heat-treatable Al alloy in which ceramic particles such as oxide and carbide are uniformly dispersed, thereby increasing wear resistance and durability.
Claims11
An Al alloy poppet valve which comprises a valve head and a valve stem, at least said valve head being made of material of non-heat treatable Al alloy, ceramic particles being unformly dispersed in the material.
Dependencies are inferred from the claim text.