PISTON FOR AN INTERNAL COMBUSTION ENGINE AND METHOD FOR PRODUCING SAME
First Claim
1. Piston (10, 110) for an internal combustion engine, having a piston head (25, 125) that has a piston crown (13, 113), and having a piston skirt (16, 116), wherein a first part of the piston head (25, 125) is formed by a piston base body (11, 111), wherein a second part of the piston head (25, 125) is formed by a piston head element (12, 112), and wherein a circumferential cooling channel (26, 126) is provided in the piston head (25, 125), wherein at least one heat-conducting element (27, 127) is disposed in the cooling channel (26, 126), which element is connected with the piston base body (11, 111) and the piston head element (12, 112) by way of an outer joining seam (28, 128) and an inner joining seam (29, 129), which run from the piston crown (13, 113) to the cooling channel (26, 126).
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Accused Products
Abstract
A piston for an internal combustion engine has a piston head having a piston crown, and a piston skirt, a first part of the piston head being formed by a piston base, and a second part of the piston head being formed by a piston head element, and a peripheral cooling channel being provided in the piston head. At least one heat-conducting element is arranged in the cooling channel and is connected to the piston base and the piston head element via an external seam and an internal seam which extend from the piston crown to the cooling channel. The invention further relates to a method for producing the piston.
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Citations
15 Claims
- 1. Piston (10, 110) for an internal combustion engine, having a piston head (25, 125) that has a piston crown (13, 113), and having a piston skirt (16, 116), wherein a first part of the piston head (25, 125) is formed by a piston base body (11, 111), wherein a second part of the piston head (25, 125) is formed by a piston head element (12, 112), and wherein a circumferential cooling channel (26, 126) is provided in the piston head (25, 125), wherein at least one heat-conducting element (27, 127) is disposed in the cooling channel (26, 126), which element is connected with the piston base body (11, 111) and the piston head element (12, 112) by way of an outer joining seam (28, 128) and an inner joining seam (29, 129), which run from the piston crown (13, 113) to the cooling channel (26, 126).
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12. Method for the production of a piston (10, 110) for an internal combustion engine, having a piston head (25, 125) that has a piston crown (13, 113), and having a piston skirt (16, 116), wherein a first part of the piston head (25, 125) is formed by a piston base body (11, 111), wherein a second part of the piston head (25, 125) is formed by a piston head element (12, 112), and wherein a circumferential cooling channel (26, 126) is provided in the piston head (25, 125), having the following method steps:
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(a) making available a piston base body (11, 111) and a piston head element (12, 112) as well as at least one heat-conducting element (27, 127); (b) fastening the at least one heat-conducting element (27, 127) to the piston base body (11, 111) or to the piston head element (12, 112); (c) mounting the piston base body (11, 111) and piston head element (12, 112) in such a manner that an outer joining region (34) and an inner joining region (35) are formed, which run from the piston crown (13, 113) to the cooling channel (26, 126); (d) joining the piston base body (11, 111) and piston head element (12, 112) in such a manner that an outer joining seam (28, 128) is formed in the outer joining region (34) and an inner joining seam (29, 129) is formed in the inner joining region (35); (e) reworking and/or finishing the piston (10, 110). - View Dependent Claims (13, 14, 15)
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Specification