EP 2891774 A1 20150708 - DIRECT-ACTION VALVE LIFTER FOR INTERNAL COMBUSTION ENGINE
Title (en)
DIRECT-ACTION VALVE LIFTER FOR INTERNAL COMBUSTION ENGINE
Title (de)
DIREKT WIRKENDER VENTILHEBER FÜR EINEN VERBRENNUNGSMOTOR
Title (fr)
POUSSOIR DE SOUPAPE À ACTION DIRECTE POUR MOTEUR À COMBUSTION INTERNE
Publication
Application
Priority
JP 2012072158 W 20120831
Abstract (en)
[Problems] A valve lifter with a variable lift mechanism is required to be deployed at a predetermined angle with respect to a cam unit, and the present invention is intended to achieve this requirement with a simple configuration without too much processing such as a fitting of the conventional longitudinal groove and a pin. [Means for Solving the Problems] A cam sliding contact surface of a valve lifter on which a high lift cam and a low lift cam slides is formed to be a smooth inclined surface and a cam slide starting point is lower than a cam slide terminating point, thereby establishing an elevation difference between the cam slide starting point and the cam slide terminating point. As a result, since the high lift cam and the low lift cam always move uphill on the cam sliding contact surface, namely, from the low cam slide starting point toward the high cam terminating point along the slope of the cam sliding contact surface, the valve lifter is not subjected to a force around the reciprocating axis from the cam and therefore, the direction of the valve lifter is maintained constant.
IPC 8 full level
F01L 13/00 (2006.01); F01L 1/14 (2006.01)
CPC (source: CN EP KR)
F01L 1/0532 (2013.01 - KR); F01L 1/143 (2013.01 - CN EP KR); F01L 13/0036 (2013.01 - CN EP KR); F01L 1/0532 (2013.01 - CN EP); F01L 2307/00 (2020.05 - CN EP KR)
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2891774 A1 20150708; EP 2891774 A4 20160720; CN 104603407 A 20150506; CN 104603407 B 20160420; JP 5817040 B2 20151118; JP WO2014033910 A1 20160808; KR 101528274 B1 20150611; KR 20150038655 A 20150408; WO 2014033910 A1 20140306
DOCDB simple family (application)
EP 12883659 A 20120831; CN 201280075528 A 20120831; JP 2012072158 W 20120831; JP 2014532678 A 20120831; KR 20157006536 A 20120831