EP 3106634 A4 20171129 - POPPET VALVE
Title (en)
POPPET VALVE
Title (de)
KEGELVENTIL
Title (fr)
SOUPAPE À CLAPET
Publication
Application
Priority
JP 2014053156 W 20140212
Abstract (en)
[origin: EP3106634A1] Provided is a poppet valve capable of realizing maximum combustion efficiency by insulating all of three heat transfer forms. In a poppet valve including a head portion (14) formed integrally with one end side of a stem portion (12), in the head portion (14), a hollow portion (19) extending along a head surface (24) is formed, a metal layer (17) that insulates radiation heat is formed on a upper end surface (25) of the hollow portion (19), and a heat insulating portion is formed between the metal layer (17) and a bottom surface of the hollow portion (19). Among the heat transfer forms, conduction and convection are insulated by the heat insulating portion, and radiation is insulated by the metal layer (17).
IPC 8 full level
F01L 3/02 (2006.01); F01L 3/04 (2006.01); F01L 3/20 (2006.01)
CPC (source: EP KR US)
F01L 3/02 (2013.01 - EP US); F01L 3/04 (2013.01 - EP KR US); F01L 3/12 (2013.01 - EP KR US); F01L 3/20 (2013.01 - EP KR US)
Citation (search report)
- [XY] EP 0049396 A1 19820414 - EATON CORP [US]
- [X] US 4346870 A 19820831 - CHUTE RICHARD, et al
- [Y] EP 1353045 A2 20031015 - FUJI VALVE [JP]
- [A] GB 2238349 A 19910529 - T & N TECHNOLOGY LTD [GB]
- See references of WO 2015121920A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3106634 A1 20161221; EP 3106634 A4 20171129; CN 105339610 A 20160217; JP WO2015121920 A1 20170330; KR 101661497 B1 20160930; KR 20160085213 A 20160715; TW 201540938 A 20151101; US 2016348546 A1 20161201; WO 2015121920 A1 20150820
DOCDB simple family (application)
EP 14882206 A 20140212; CN 201480036387 A 20140212; JP 2014053156 W 20140212; JP 2015562583 A 20140212; KR 20157035623 A 20140212; TW 104104363 A 20150210; US 201415117344 A 20140212