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US 11,767,774 B2Granted
Poppet valve
AssigneeEaton Intelligent Power Limited
InventorsAlberto Aimasso, Luigi Lia, Francesca Mancuso
Life of this patent
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Abstract
A poppet valve includes: a valve body comprising a valve stem body, a valve head body with a valve combustion face, and a valve fillet body interconnecting the valve stem body and the valve head body. The valve fillet body surface has an increased thermal resistance compared to the valve combustion face.
Claims10
A poppet valve, comprising:
- a valve body comprising a valve stem body, a valve head body with an uncoated valve combustion face provided on a first side of the valve head body, a cavity arranged in one or both of the valve stem body and the valve head body, and a valve fillet body interconnecting the valve stem body to a second side of the valve head body, the second side being opposite the first side,
- wherein an exterior surface of the valve fillet body has an increased thermal resistance compared to the valve combustion face, and
- wherein a thermal barrier coating is arranged on the valve fillet body to provide the increased thermal resistance, the thermal barrier coating comprising ferrite particles arranged by crystal growth, a silica based inorganic compound, spray painting of hollow ceramic balls, or a thermal spray of Yttria-stabilized zirconia.
Dependencies are inferred from the claim text.