Title:
POPPET VALVE
Document Type and Number:
WIPO Patent Application WO/2015/121920
Kind Code:
A1
Abstract:
Provided is a poppet valve which is configured so as to prevent all the three modes of heat transfer from occurring, thereby enabling maximum combustion efficiency to be achieved. A poppet valve has an umbrella section (14) integrally formed on one end side of a shaft section (12). A hollow section (19) extending along an umbrella front surface (24) is formed within the umbrella section (14). A metallic layer (17) for blocking radiation heat is formed on the ceiling surface (25) of the hollow section (19), and a heat insulating section is formed between the metallic layer (17) and the bottom surface of the hollow section (19). Among the modes of heat transfer, the conduction and convention are blocked by the heat insulating section, and the radiation is blocked by the metallic layer (17).
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Inventors:
KURAHASHI KAZUNORI (JP)
TAKAHASHI YOSHIHIRO (JP)
TAKAHASHI YOSHIHIRO (JP)
Application Number:
PCT/JP2014/053156
Publication Date:
August 20, 2015
Filing Date:
February 12, 2014
Export Citation:
Assignee:
NITTAN VALVA (JP)
International Classes:
F01L3/02; F01L3/20; F01L3/04
Domestic Patent References:
| WO2010119977A1 | 2010-10-21 |
Foreign References:
| JPH01173417U | 1989-12-08 | |||
| JPS52111813U | 1977-08-25 | |||
| JPS5273306U | 1977-06-01 | |||
| JPS5525679U | 1980-02-19 | |||
| JPH04311611A | 1992-11-04 |
Other References:
See also references of EP 3106634A4
Attorney, Agent or Firm:
YAGI Hidehito et al. (JP)
Hideto Yagi (JP)
Hideto Yagi (JP)
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