Combustion engine with a built-up piston
AssigneeMahle GmbH
InventorDieter Messmer
Life of this patent
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Abstract
The invention relates to a built-up piston, comprising central screwing and a central cooling chamber. The aim of the invention is to reduce the flow resistance in the oil delivery area. To this end, means for transferring oil from the piston rod to the central cooling chamber are provided in the area of the screw head of the central screw connection.
Claims5
Internal combustion engine with a constructed piston (2), consisting of a piston head (3) made of steel and a lower piston part (4) that are connected with one another by way of a single screw (5) arranged in the longitudinal axis of the piston or close to the longitudinal axis of the piston, and with a central cooling space (7) between the piston head and the lower piston part, furthermore with an oil-carrying connecting rod (10) that is connected with the lower piston part (4) by means of a piston bolt (9),
- characterized in that
- means are provided in the region of the screw head (11) for taking oil over from the connecting rod (10) into the central cooling space (7).
Internal combustion engine with a constructed piston according to one of the preceding claims,
- characterized in that
- the screw head (11) is arranged at least partially radially within the sliding block (12).
Dependencies are inferred from the claim text.