EP 1864003 A1 20071212 - GAS SHUTTLE VALVE PROVIDED WITH AN ANTI-CORROSIVE LAYER
Title (en)
GAS SHUTTLE VALVE PROVIDED WITH AN ANTI-CORROSIVE LAYER
Title (de)
GASWECHSELVENTIL MIT KORROSIONSSCHUTZSCHICHT
Title (fr)
SOUPAPE D'ECHANGE DES GAZ PRESENTANT UNE COUCHE ANTICORROSION
Publication
Application
Priority
- EP 2006002292 W 20060314
- DE 102005013088 A 20050318
Abstract (en)
[origin: CA2601053A1] The invention relates to a gas shuttle valve for an internal combustion engi ne comprising a valve cone which substantially consists of a valve shaft projected in a valve disc in such a way that a hollow cone is formed. The valve cone or at least the shaft thereof is made of a typical valve steel consisting of a nitride forming base alloy up to the hollow cone area. The a im of said invention is to improve said gas shuttle valve in such a way that ev en the parts made of the typical valve steel exhibit a good anti-corrosive protection. For this purpose, the valve cone is provided at least partial ar ea with an anti-corrosive layer in the form of a nitride layer, which is produc ed by the nitride forming base alloy conversion by plasma nitriding or plasma nitrocarburising in a nitrogenous atmosphere.
IPC 8 full level
F01L 1/32 (2006.01); C23C 8/32 (2006.01); F01L 3/04 (2006.01); F01L 3/06 (2006.01)
CPC (source: EP KR US)
C23C 8/32 (2013.01 - KR); F01L 1/32 (2013.01 - EP KR US); F01L 3/04 (2013.01 - EP KR US); F01L 3/06 (2013.01 - EP KR US); Y02T 10/12 (2013.01 - EP US)
Citation (search report)
See references of WO 2006097264A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
DE 102005013088 A1 20060921; DE 102005013088 B4 20061228; CA 2601053 A1 20060921; CN 101142379 A 20080312; EP 1864003 A1 20071212; JP 2008533372 A 20080821; KR 20070112287 A 20071122; NO 20075320 L 20071213; RU 2007138648 A 20090427; US 2008149062 A1 20080626; WO 2006097264 A1 20060921
DOCDB simple family (application)
DE 102005013088 A 20050318; CA 2601053 A 20060314; CN 200680008693 A 20060314; EP 06707539 A 20060314; EP 2006002292 W 20060314; JP 2008501214 A 20060314; KR 20077023714 A 20071016; NO 20075320 A 20071017; RU 2007138648 A 20060314; US 88664906 A 20060314