A cylinder sleeve to be inserted into an engine block and an engine block

A cylinder liner and body technology, applied in the direction of machines/engines, cylinders, cylinder heads, etc., can solve the problem that diffusion cannot occur properly

Inactive Publication Date: 2015-10-07
MAHLE METAL LEVE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Regarding this document, due to the high melting point of pure nickel (approximately 1400°C), when it is applied by high pressure die casting (see Figure 9 Diffusion cannot properly occur when the empty space of

Method used

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  • A cylinder sleeve to be inserted into an engine block and an engine block
  • A cylinder sleeve to be inserted into an engine block and an engine block
  • A cylinder sleeve to be inserted into an engine block and an engine block

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Embodiment Construction

[0039] The field of the invention relates to internal combustion engines, in particular to the interaction between the cylinder liner 10 and the corresponding block 8 . By casting / spraying liquid metal around a cylinder sleeve 10 previously arranged in a corresponding mould, one realizes the body with the sleeve 10 inserted. Typically, the metal of the airframe is a light metal such as aluminum or an aluminum alloy.

[0040] As stated, the cylinder sleeve 10 needs to ensure that it adheres to the block 8 and that no empty areas 15 without metal (casting defects) occur after the liquid metal casting in the mold has cooled. As explained in the prior art, ensuring this combination is relatively complex.

[0041] In order to properly understand the present invention, some concepts and examples need to be clarified. As defined above, there are two casting types for inserting cylinder sleeves into blocks made of aluminum alloys. That is, high pressure die casting (hereinafter ref...

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Abstract

The present invention relates to a cylinder sleeve (10) for internal combustion engines, more concretely to a cylinder sleeve (10) inserted by casting into an engine block (8), wherein the circumferential outer surface (2) is provided with a coating (5) capable of providing adhesion between the cylinder sleeve (10) and the engine block (8), inhibiting the formation of empty spaces (4) and providing excellent heat exchange for the engine block (8). The coating (5) has the particularity of being constituted by a nickel- phosphorus (NiP) alloy with a varying melting temperature as a function of the phosphorus contents, which enable a sleeve (10) coated with such an alloy to be inserted by high pressure die cast or low pressure die cast or by gravity.

Description

technical field [0001] The present invention relates to a component of an internal combustion engine, more particularly to at least one cylinder sleeve inserted into the block by casting, the outer peripheral surface of which is provided with a coating which promotes good adhesion and thermal exchange, regardless of the casting technique used. Background technique [0002] Due to new market demands, the internal parts of the engine are subject to more demands and in this respect they need to present solutions that guarantee better performance and are able to contribute greater reliability and output of the engine. [0003] Many manufacturers of automatic components seek different technical solutions for cylinder sleeves of internal combustion engines, where it should be noted that the cylinders of internal combustion engines can be formed from cylinder sleeves, which are inserted into the body by casting the body around the circumference of the sleeve . [0004] Now, the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D7/04F02F1/00
CPCF02F1/20C25D3/562C25D5/00C25D7/00C25D7/04F02F1/004F02F1/16
Inventor 罗德里戈·法瓦龙
Owner MAHLE METAL LEVE
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