Internal combustion engine component and method for the production thereof

a technology of internal combustion engine and component, which is applied in the direction of machines/engines, mechanical equipment, coatings, etc., can solve the problems of mechanical tension induced, crack formation, and over-the-weight of materials

Inactive Publication Date: 2007-04-26
DAIMLER AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0007] It is thus the task of the present invention to provide a component of an internal combustion engine and a process for production thereof in which, even in the case of vary

Problems solved by technology

In components of internal combustion engines, such as, for example, cylinder heads or pistons, a problem frequently occurs during thermal cycling in that, in the case of prevention of thermal expansion in higher loaded areas, mechanical tensions are induced in these areas which are so high that, due to the strong plasticization and the therewith associated material fatigue in these areas, crack formation occurs.
Since the thermally h

Method used

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  • Internal combustion engine component and method for the production thereof
  • Internal combustion engine component and method for the production thereof
  • Internal combustion engine component and method for the production thereof

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Embodiment Construction

[0024]FIGS. 7, 8 and 9 show a component 1 of an internal combustion engine—not shown in its entirety—as known from the state of the art. The component 1 is in the present case a cylinder head 1a, wherein FIGS. 1, 5 and 6 show a view on the separating surface 2 of the cylinder head 1a. In place of the cylinder head 1a the component 1 could just as well be a piston or another thermally very strongly loaded component of an internal combustion engine.

[0025] The cylinder head 1a includes multiple valve bores 3, between which a thermally higher loaded area 4 is located, which in the following is referred to as the intermediate area 4a. This intermediate area 4a is, during operation of the internal combustion engine, higher thermally loaded than the rest of the component 1 or, as the case may be, than other areas 5 of the component 1. Since the internal combustion engine associated with the cylinder head 1a has three, or as the case may be, six cylinders, a total of three intermediate are...

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Abstract

Disclosed is an internal combustion engine component (1) comprising at least one area (4) that is subject to a greater thermal load then another area (5) during operation of the internal combustion engine. The area (4) that is subjected to a greater thermal load is provided with a lower heat expansion coefficient (α2) then the area (5) which is subject to a lower thermal load.

Description

CROSS REFERENCE TO RELATED APPLICATION [0001] This application is a national stage of PCT / EP2004 / 012413 filed Nov. 3, 2004 and based upon DE 103 53 473.3 filed on Nov. 15, 2003 under the International Convention.BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The invention concerns a component of an internal combustion engine of the type defined in greater detail hereinafter. The invention further concerns a process for production of a component of an internal combustion engine. [0004] 2. Description of Related Art [0005] In components of internal combustion engines, such as, for example, cylinder heads or pistons, a problem frequently occurs during thermal cycling in that, in the case of prevention of thermal expansion in higher loaded areas, mechanical tensions are induced in these areas which are so high that, due to the strong plasticization and the therewith associated material fatigue in these areas, crack formation occurs. This prevention of thermal expans...

Claims

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Application Information

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IPC IPC(8): C22F1/04C23C24/10C23C26/02F01L3/04F02F1/00
CPCC23C24/10C23C26/02F01L3/04F02F1/00F02F2001/008F02F2200/06
Inventor CLAUS, JUERGENDE ZOLT, ROBERTOHEIGL, REINERSAELTZER, WOLF
Owner DAIMLER AG
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