EP 4159989 A2 20230405 - VARIABLE COMPRESSION-RATIO DEVICE
Title (en)
VARIABLE COMPRESSION-RATIO DEVICE
Title (de)
VORRICHTUNG MIT VARIABLEM VERDICHTUNGSVERHÄLTNIS
Title (fr)
DISPOSITIF À TAUX DE COMPRESSION VARIABLE
Publication
Application
Priority
- JP 2021161719 A 20210930
- JP 2021166512 A 20211008
Abstract (en)
An object is to provide oil supply to a variable compression-ratio device. A variable compression-ratio device includes: a gear shaft (52) disposed inside a crankshaft (12) of an internal combustion engine (11) coaxially with the crankshaft (12) and configured to be rotationally driven by a power source (32); an input gear (51) connected to the gear shaft (52); an intermediate gear (50) supported by a crank web (16) of the crankshaft (12) and engaged with the input gear (51); an eccentric cam (31) disposed between a crank pin (17) of the crankshaft (12) and a large end (18a) of a connecting rod (18) and engaged with the intermediate gear (50); and a first oil channel (5) configured to supply lubricating oil to the input gear (51).
IPC 8 full level
F02B 75/04 (2006.01)
CPC (source: EP)
F02B 75/048 (2013.01)
Citation (applicant)
- JP 2012036934 A 20120223 - HONDA MOTOR CO LTD
- JP 2009503971 A 20090129
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
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4159989 A2 20230405; EP 4159989 A3 20230419; EP 4159989 B1 20240807; BR 102022018468 A2 20230411
DOCDB simple family (application)
EP 22195501 A 20220914; BR 102022018468 A 20220915