Hollow exhaust poppet valve
Number of patents in Portfolio can not be more than 2000
United States of America
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Apr 12, 2022
Grant Date -
Jan 7, 2021
app pub date -
Sep 19, 2020
filing date -
Sep 19, 2020
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In a hollow exhaust poppet valve including a fillet increasing in diameter toward a leading end, a stem, and a head and having a coolant within a hollow part formed from the head to the stem, the stem includes a first stem part on a base end side, and a second stem part integrated with the first stem part via a step part and integrated with the fillet, and the hollow part includes a first hollow part formed inside the first stem part, and a second hollow part formed inside the second stem part, the fillet, and the head in such fashion as to have a constant inner diameter greater than the first hollow part and formed so as to be continuous with the first hollow part via a tapered part or a curved part.
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