EP 3455468 B1 20210120 - GAS EXCHANGE VALVE
Title (en)
GAS EXCHANGE VALVE
Title (de)
GASWECHSELVENTIL
Title (fr)
SOUPAPE D'ÉCHANGE DES GAZ
Publication
Application
Priority
EP 2016060343 W 20160509
Abstract (en)
[origin: WO2017194091A1] The invention relates to a gas exchange valve (1) of an internal combustion engine, comprising a valve disk (2) and a valve stem (3). As an essential feature of the invention, at least some areas on at least the valve stem (3) are provided with a galvanically applied nickel-phosphorus layer (4), the phosphorus moiety of which is greater than 10 wt%, in particular between 11 and 13 wt%, thus increasing resistance to wear and corrosion.
IPC 8 full level
F01L 3/04 (2006.01)
CPC (source: EP)
F01L 3/04 (2013.01); F01L 2301/00 (2020.05)
Citation (opposition)
Opponent : Federal-Mogul Valvetrain GmbH
- EP 3061852 A2 20160831 - MAHLE INT GMBH [DE]
- CN 201891919 U 20110706 - YANGZHONG VALVE FACTORY CO LTD
- US 2013153432 A1 20130620 - JONES ROBERT [CA]
- US 2006040126 A1 20060223 - RICHARDSON RICK A [US], et al
- US 5441024 A 19950815 - WIETIG FREDERICK G [US], et al
- EP 2803827 A1 20141119 - MAHLE INT GMBH [DE]
- DE 102012202859 A1 20130829 - MAHLE INT GMBH [DE]
- SIMON BAUER: "Entwicklung und Validierung eines galvanischen Nickel-Phosphor-Elektrolyten", BACHELORARBEIT, 2014, Mittweida, XP055857325, Retrieved from the Internet <URL:https://monami.hs-mittweida.de/frontdoor/deliver/index/docId/4710/file/Bachelorarbeit.pdf>
- ROBERT BRUGGER: "Die galvanische Vernickelung", 1984, EUGEN G. LEUZE VERLAG, article "17.5.6.Vernickeln von legierten Stählen", pages: 384 - 385, XP055857330
- METOBA: "Nickel-Strike-Beschichtung", METOBA - INFOBLATT, 2019, XP055857322, Retrieved from the Internet <URL:https://www.metoba.de/wp-content/uploads/2020/03/Nickel-Strike-Beschichtung.pdf>
- ANTON KUROWSKI: "Elektrochemische und oberflächenanalytische Untersuchungen zur galvanischen und chemischen Nickel-Phosphor Schichtbildung", INAUGURAL-DISSERTATION, 2003, Universität Düsseldorf, XP055857337, Retrieved from the Internet <URL:https://docserv.uni-duesseldorf.de/servlets/DerivateServlet/Derivate-2566/566.pdf>
- MAHLE GMBH (HRSG.): "Ventiltrieb. Systeme und Komponenten", 2013, SPRINGER, article "3. Ventile, Ventilführungen und Ventilsitzrin", pages: 29 - 93, XP055857339
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)
WO 2017194091 A1 20171116; EP 3455468 A1 20190320; EP 3455468 B1 20210120
DOCDB simple family (application)
EP 2016060343 W 20160509; EP 16720876 A 20160509