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internal combustion engine piston

A technology of internal combustion engine and piston, applied in the field of internal combustion engine

Active Publication Date: 2022-06-03
MAHLE INT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention is therefore concerned with the problem of proposing an improved or at least an alternative embodiment for a piston of the type in question which in particular solves the disadvantages known from the prior art

Method used

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Embodiment Construction

[0029] according to Figure 1 to Figure 9 as well as Figures 12 to 14 , the piston 1 of the invention of the internal combustion engine 2 embodies a piston crown 3 with a piston crown cavity 4 and an annular part 5 . A circumferential groove for accommodating a piston ring (not depicted) is provided in this case in the region of the annular part 5 . An approximately annular cooling channel 6 closed at the bottom by a closing element 7 is arranged between the annular part 5 and the piston crown cavity 4 . exist Figure 13 Here, the closure element 7 is in this case constructed in one piece with the piston 1 , whereas in other representations it is constructed as a separate part. According to the invention, arranged in the cooling channel 6 is at least one guide element 8 having a lug facing in the direction of the inner cooling channel wall 9 and arranged at least partially circumferentially, the at least one guide element 8 being oriented such that there is The cooling oi...

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Abstract

The invention relates to a piston (1) of an internal combustion engine (2), comprising a piston crown (3), said piston crown having a piston crown cavity (4) and an annular part (5), and comprising a ring part ( 5) An annular cooling channel (6) between the piston crown cavity (4) and closed in the downward direction by a closing element (7). It is essential for the invention that at least one guide element (8) is arranged in the cooling channel (6), which guide element has a nose (10) which is guided towards the inner cooling channel wall (9) and which extends at least partially in the circumferential direction and is oriented such that the cooling oil (11) present in the cooling channel (6) is directed towards the upper region (12) of the inner cooling channel wall (9) and thus The upper zone (12) is cooled.

Description

technical field [0001] The invention relates to a piston of an internal combustion engine, the piston comprising a piston crown having a piston crown cavity and an annular member, and a cooling channel arranged therebetween. The invention additionally relates to an internal combustion engine having at least one such piston. Background technique [0002] From EP1372904B1 it is known from EP1372904B1 that a piston of the kind in question for an internal combustion engine comprises a piston crown having a piston bowl and an annular part and having a piston arranged between the annular part and the piston crown cavity There are annular cooling channels in between, which are closed in the downward direction by closing elements. An inlet and an outlet are usually arranged in this closing element, via which the cooling oil can enter the cooling channel again or leave the cooling channel again. The inner wall of the cooling channel is usually formed simultaneously by a region whic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02F3/22F16J1/09
CPCF02F3/22F16J1/09F02F2003/0061F05C2201/0448
Inventor 弗兰克-彼得·容菲利浦·利希特赖纳·夏普
Owner MAHLE INT GMBH