EP 2666981 A1 20131127 - IRON-BASED SINTERED ALLOY VALVE SEAT
Title (en)
IRON-BASED SINTERED ALLOY VALVE SEAT
Title (de)
VENTILSITZ AUS EINER SINTERLEGIERUNG AUF EISENBASIS
Title (fr)
SIÈGE DE SOUPAPE EN ALLIAGE FRITTÉ À BASE DE FER
Publication
Application
Priority
- JP 2011009719 A 20110120
- JP 2012051191 W 20120120
Abstract (en)
A valve seat of an iron-based sintered alloy having high wear resistance in a wide temperature range, which can be used in direct injection engines with improved fuel efficiency, low emission and high power, is obtained by limiting the amount of a solid lubricant dispersed in the matrix of the valve seat of an iron-based sintered alloy, and dispersing at least two types of hard particles having different hardnesses in the matrix, thereby providing high strength and self-lubrication, as well as improved wear resistance under no lubrication in a wide temperature range.
IPC 8 full level
F01L 3/02 (2006.01); B22F 1/00 (2006.01); B22F 5/00 (2006.01); C22C 27/04 (2006.01)
CPC (source: EP US)
B22F 5/008 (2013.01 - EP US); C22C 27/04 (2013.01 - EP US); C22C 33/0207 (2013.01 - EP US); C22C 33/0221 (2013.01 - EP US); C22C 33/0228 (2013.01 - EP US); C22C 38/02 (2013.01 - EP US); C22C 38/08 (2013.01 - EP US); C22C 38/12 (2013.01 - EP US); C22C 38/22 (2013.01 - EP US); C22C 38/24 (2013.01 - EP US); F01L 3/02 (2013.01 - EP US); F01L 1/0532 (2013.01 - EP US); F01L 1/143 (2013.01 - EP US); F01L 2303/00 (2020.05 - EP US); F01L 2800/18 (2013.01 - EP US); F01L 2810/02 (2013.01 - EP US); F01L 2820/01 (2013.01 - EP US)
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 2666981 A1 20131127; EP 2666981 A4 20150401; CN 103328776 A 20130925; JP 2012149584 A 20120809; JP 5823697 B2 20151125; MX 2013008435 A 20131216; US 2013291822 A1 20131107; WO 2012099239 A1 20120726
DOCDB simple family (application)
EP 12736573 A 20120120; CN 201280005998 A 20120120; JP 2011009719 A 20110120; JP 2012051191 W 20120120; MX 2013008435 A 20120120; US 201213980612 A 20120120