Piston BOLTS

A piston bolt, spiral technology, applied in the field of piston bolts, to achieve a good cooling effect

Inactive Publication Date: 2017-06-23
MAHLE INT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Thus, in both cases, only one of the two properties is improved while the other is worsened

Method used

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Examples

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Embodiment Construction

[0026] according to Figure 1 to Figure 7 The piston bolt 1 according to the present invention usually couples a piston (not shown) in an internal combustion engine 2 to a connecting rod. The piston bolt 1 includes an axial opening 3, and at least one reinforcing rib 4 is arranged on the inner surface of the axial opening 3. Now, according to the present invention, the at least one reinforcing rib 4 is of spiral configuration (see Figure 1 to Figure 3 as well as Figure 5 with Image 6 ) Or it is provided with a honeycomb pattern 5 (see Figure 7 ) Of multiple such reinforcing ribs 4.

[0027] Just like Figure 1 to Figure 3 As shown in each of the embodiments, at least one reinforcing rib 4 can be configured as a spiral reinforcing rib, which can extend uniformly through the opening 3. Alternatively, it can also be thought of as Figure 5 with Image 6 As shown, two or more spiral reinforcement ribs 4 extending in opposite directions are provided.

[0028] Regarding the opening 3...

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PUM

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Abstract

A piston bolt may include an axial opening and at least one reinforcement rib may be arranged on an inner surface of the opening. The at least one reinforcement rib may be helical in conformation or may include a plurality of reinforcement ribs forming a honeycomb pattern.

Description

Technical field [0001] The invention relates to a piston bolt with an axial opening according to the preamble of claim 1. Background technique [0002] From US 4,756,240A, a plug bolt having such an axial opening is known, in which at least one reinforcing rib is arranged on the inner surface of the opening. This should be to achieve optimized load. [0003] The piston bolt constitutes the force transmission connecting element between the piston and the connecting rod. It is pressed by the gas and mass force acting on it to produce bending and lateral ellipticization. It is also trimmed along a specific section. Along this section, the piston bolt And the bolt bosses in the piston and the connecting rod are elastically deformed. The contact surfaces of the piston bolt and the bolt boss are generally cylindrical and parallel to each other in an unloaded state, and they become bent and inclined, so that local surface pressure peaks may be generated. Together with the tensile stres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J1/16
CPCF16J1/16F02F3/00F16B7/06F16B7/182F16J1/18
Inventor 罗兰·洛克曼
Owner MAHLE INT GMBH
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