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 has at least one oil chamber and the eccentric having a protrusion reaching into the oil chamber, or
- the eccentric including or delimiting at least one oil chamber and the connecting rod head or the eccentric having 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 and
- a lubricant supply chamber is positioned between the connecting rod head and the eccentric, the lubricant supply chamber having an arcuate shape.
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, the connecting rod head or eccentric having a protrusion,
- a lubricant supply chamber positioned between the connecting rod head and the eccentric, the lubricant supply chamber having an arcuate shape,
- wherein the protrusion of the eccentric or the connecting rod head reduces a flow channel for a hydraulic fluid in position-dependent manner, thereby reduces a 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, and
- a switching actuator positioned between the two bearing regions, the switching actuator is actuatable between a first position and a second position,
- wherein the movement of the actuator between the first position and the second position controls a fluid for activating the adjustment of the compression ratio.
Dependencies are inferred from the claim text.