Connecting rod of an internal combustion engine for changing the compression ratio
AssigneeFEV Europe GmbH
InventorsWerner Bick, Martin Koch, Thomas Saupe, Erwin Reichert, Ralf Bey, Christopher Marten, Martin Pieper
Life of this patent
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Abstract
The connecting rod head includes at least one oil chamber and an eccentric comprises a protrusion reaching into the oil chamber, so that an oil pressure in the oil chamber exerts a force on the protrusion to change the eccentric setting of the eccentric.
Claims20
An internal combustion engine having a connecting rod with a device for changing a compression ratio (VCR) of the internal combustion engine, the internal combustion engine comprising:
- a connecting rod head and a connecting rod pin which is mounted by an eccentric relative to the connecting rod head,
- wherein:
- either the connecting rod head or the connecting rod pin comprises at least one oil chamber and the eccentric comprises a protrusion reaching into the oil chamber, or
- the eccentric comprises or delimits at least one oil chamber and the connecting rod head or the eccentric comprises a protrusion reaching into the oil chamber, such that an oil pressure in the oil chamber exerts a force on the protrusion to change the eccentric setting of the eccentric.
An internal combustion engine having a connecting rod with a device for changing a compression ratio (VCR) of the internal combustion engine, the internal combustion engine comprising:
- a connecting rod head and a connecting rod pin, which is mounted by an eccentric relative to the connecting rod head, wherein two end positions are provided for the adjustability of the eccentric and a dampening is provided for at least one end position in that a component, preferably a protrusion of the eccentric, reduces a flow channel for a hydraulic fluid in position-dependent manner, in order to thereby reduce the velocity of the eccentric during the movement into an end position.
An internal combustion engine having a connecting rod with a device for changing a compression ratio (VCR) of the internal combustion engine, the internal combustion engine comprising:
- a bearing region for mounting the connecting rod relative to a piston and a bearing region for mounting the connecting rod on a crankshaft of the internal combustion engine,
- wherein a switching actuator for activating the adjustment of the compression ratio is arranged between the two bearing regions.
Dependencies are inferred from the claim text.