Global Patent Index - EP 2543834 B1

EP 2543834 B1 20160427 - Breather structure of motorcycle engine

Title (en)

Breather structure of motorcycle engine

Title (de)

Entlüfterstruktur eines Motorradmotors

Title (fr)

Structure de circuit de blow-by de moteur de motocyclette

Publication

EP 2543834 B1 20160427 (EN)

Application

EP 12173536 A 20120626

Priority

JP 2011147808 A 20110703

Abstract (en)

[origin: EP2543834A1] [Object] To prevent an oil from flowing into a breather outlet (102) in a motorcycle engine (E) even when a vehicle body is considerably leaned with the engine in operation, the motorcycle engine (E) including: an engine body (20) supported by a vehicle-body frame (F) such that an axis (C) of a cylinder bore (26) is arranged in parallel to a vertical plane (VP) in a vehicle-longitudinal direction; a power-transmission-member chamber (61) for moving an endless power transmission member (60) of a timing transmission device (57) provided between a crankshaft (25) and a camshaft (52) constituting a part of a valve system (51), the power-transmission-member chamber (61)formed in the engine body (20) at one side in a lateral direction of a vertical plane (VP) including the axis (C) of the cylinder bore (26); and a breather outlet (102) provided in a cylinder head (23) or a head cover (24), the breather outlet (102) configured to exhaust a blow-by gas introduced into a valve chamber (50) from a crank chamber (27) to the outside of the engine body (20). [Solving Means] The breather passage (85) connecting the valve chamber (50) and the crank chamber (27) is formed in the engine body in such a manner as to be arranged on an opposite side of the vertical plane VP including the axis (C) of the cylinder bore (26) to the power-transmission-member chamber (61).

IPC 8 full level

F01M 13/04 (2006.01); F01M 11/02 (2006.01); F01M 11/06 (2006.01)

CPC (source: EP KR)

F01M 11/02 (2013.01 - EP); F01M 11/065 (2013.01 - EP); F01M 13/00 (2013.01 - KR); F01M 13/0416 (2013.01 - EP); F02F 1/24 (2013.01 - KR); F02F 7/00 (2013.01 - KR); F01M 2011/023 (2013.01 - EP); F01M 2013/0461 (2013.01 - EP)

Citation (examination)

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 2543834 A1 20130109; EP 2543834 B1 20160427; AU 2012203479 A1 20130117; AU 2012203479 B2 20140717; CN 102865123 A 20130109; CN 102865123 B 20140924; ES 2585036 T3 20161003; JP 2013015055 A 20130124; JP 5838533 B2 20160106; KR 101353713 B1 20140120; KR 20130004547 A 20130111

DOCDB simple family (application)

EP 12173536 A 20120626; AU 2012203479 A 20120614; CN 201210212447 A 20120621; ES 12173536 T 20120626; JP 2011147808 A 20110703; KR 20120069216 A 20120627