EP 3387235 A1 20181017 - INTERNAL COMBUSTION ENGINE
Title (en)
INTERNAL COMBUSTION ENGINE
Title (de)
BRENNKRAFTMASCHINE
Title (fr)
MOTEUR À COMBUSTION INTERNE
Publication
Application
Priority
- DE 102015224907 A 20151210
- EP 2016080330 W 20161208
Abstract (en)
[origin: WO2017097936A1] The invention relates to an internal combustion engine comprising a cylinder (12), a piston (18) that is movably located within the cylinder (12), a crankshaft (14) and a connecting rod (22) that connects the piston (18) to a crank pin (30) of the crankshaft (14). Rotatably mounted within the connecting rod top end (26) of the connecting rod (22) is an eccentric sleeve (40), which rotatably holds the crank pin (30) and which, when necessary, can be locked in relation to the connecting rod (22) in at least two rotational orientations by means of a locking device (52). To achieve this, a locking element (56) of the locking device (52) can be moved into a locking hollow (70) of the connecting rod (22) or of the eccentric sleeve (40). According to the invention, the locking hollow (70) has greater dimensions, with respect to the circular path of the locking element (56) followed by said locking element relative to the component forming the locking hollow during a relative rotation of the eccentric sleeve (40) and the connecting rod (22), than those of the part of the locking element (56) designed to engage in the locking hollow (70). A relatively large locking hollow (70) of this type guarantees a secure engagement of the locking element (56), even at high relative angular speeds of the locking element (56) and the component forming the locking hollow (70), since the locking element (56) is not merely able to move in the locking hollow (70) in one definite rotational direction defined by an angle between the eccentric sleeve (40) and the connecting rod (22), but can be moved through a greater angular range, so that sufficient time is available for moving the locking element (56) into the locking hollow (70), even when there are relatively large differences in the angular speeds.
IPC 8 full level
F02B 75/04 (2006.01)
CPC (source: EP)
F02B 75/04 (2013.01); F02B 75/045 (2013.01)
Citation (search report)
See references of WO 2017097936A1
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)
DE 102015224907 A1 20170614; EP 3387235 A1 20181017; WO 2017097936 A1 20170615
DOCDB simple family (application)
DE 102015224907 A 20151210; EP 16819016 A 20161208; EP 2016080330 W 20161208