Poppet valve and method for manufacturing same
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United States of America Patent
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Nov 12, 2019
Grant Date -
Jul 27, 2017
app pub date -
Feb 6, 2017
filing date -
Aug 27, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A method for manufacturing a poppet valve 10 from an intermediate valve products is disclosed. The intermediate valve products have an intermediate valve head 14′ with a pressing protrusions 15. A peak 15a of the pressing protrusions 15 is located in a normal direction X2 of the seat surface N, which is positioned on a normal line X2 passing a reference point P3 set on a line segment K connecting a base point P1 in an inner side and a base point P2 in an outer side of the seat surface N; a position of the reference point P3 is set such that a relation between a length L1 from the base point P1 to the reference point P3 and a length L2 from the base point P2 to the reference point P3 meets a formula of L1/L2≤0.5.
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