EP 4043702 A1 20220817 - A SYSTEM FOR OPERATING A CYLINDER VALVE ASSEMBLY FOR AN INTERNAL COMBUSTION ENGINE
Title (en)
A SYSTEM FOR OPERATING A CYLINDER VALVE ASSEMBLY FOR AN INTERNAL COMBUSTION ENGINE
Title (de)
EIN SYSTEM ZUM BETREIBEN EINER ZYLINDERVENTILBAUGRUPPE FÜR EINEN VERBRENNUNGSMOTOR
Title (fr)
SYSTÈME D'ACTIONNEMENT D'UN ENSEMBLE DE SOUPAPE DE CYLINDRE POUR UN MOTEUR À COMBUSTION INTERNE
Publication
Application
Priority
IT 202100002960 A 20210210
Abstract (en)
A system for operating a cylinder valve assembly for an internal combustion engine comprising a main event motion source configured to provide main event valve motions to the valve assembly, a main rocker arm operatively connected to the main event motion source, in such a way to assume an active condition at main event and a released condition, a lost motion assembly (LMA) operatively associated to the valve assembly (VB), wherein the lost motion assembly includes a locking element (LE), wherein the locking element is arranged to assume a locking condition with a first portion disposed in a corresponding seat (LES) of the valve assembly wherein the outer plunger includes a first duct (LD) to convey a hydraulic medium, arranged to pressurize the seat (LES) and wherein the lost motion assembly is realized such that sliding force exerted on the locking element by the corresponding seat pressurization exceeds frictions developed between the locking element and the corresponding seat only when the rocker arm is in released condition
IPC 8 full level
F01L 13/00 (2006.01); F01L 1/12 (2006.01); F01L 1/14 (2006.01); F01L 1/18 (2006.01); F01L 1/24 (2006.01); F01L 1/26 (2006.01); F01L 1/46 (2006.01); F01L 13/06 (2006.01); F02D 13/04 (2006.01)
CPC (source: EP)
F01L 1/12 (2013.01); F01L 1/143 (2013.01); F01L 1/181 (2013.01); F01L 1/2411 (2013.01); F01L 1/26 (2013.01); F01L 13/0005 (2013.01); F01L 13/06 (2013.01); F01L 2001/2444 (2013.01); F01L 2001/467 (2013.01); F01L 2810/02 (2013.01); F02D 13/06 (2013.01)
Citation (applicant)
US 2014251266 A1 20140911 - EMMONS KRISTIN V [US], et al
Citation (search report)
- [XAI] US 10851682 B2 20201201 - BALTRUCKI JUSTIN D [US]
- [A] US 9790824 B2 20171017 - BALTRUCKI JUSTIN [US], et al
- [A] US 2020182097 A1 20200611 - ALEXANDRU MATEI [US], et al
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)
DOCDB simple family (application)
EP 22155573 A 20220208; IT 202100002960 A 20210210