Improved engine cylinder block and manufacturing technique thereof

A technology of engine cylinder block and cylinder block, which is applied in the direction of engine components, machines/engines, cylinders, etc., can solve problems such as difficult to meet the requirements of automobile engines and poor sealing performance of piston rings, and achieve simple manufacturing process, prolong service life, and improve The effect of manufacturing precision

Active Publication Date: 2016-10-05
代卫东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the temperature of the casing and inner liner of the cylinder liner of the engine changes, the sealing performance of the piston and piston ring in the cylinder liner is poor.
[0006] The existing cylinder liners are difficult to meet the requirements of automobile engines, especially the requirements for strength, hardness, wear resistance and corrosion resistance.

Method used

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  • Improved engine cylinder block and manufacturing technique thereof
  • Improved engine cylinder block and manufacturing technique thereof
  • Improved engine cylinder block and manufacturing technique thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as figure 1 As shown, an improved engine block of the present invention includes a block body 1, a cylinder body 1 is provided with a cylinder hole 2, and the inner wall of the cylinder hole 2 is provided with a wear-resistant layer 11; the wear-resistant layer 11 Made of cast iron coating. The thickness of the cast iron coating is 1mm-2mm, preferably 1.5mm. The number of the cylinder holes 2 is set according to actual needs, such as four. The cast iron coating provided in the present invention improves the wear resistance of the inner wall of the cylinder bore 2 .

[0034] In specific manufacturing, the existing mature plasma spraying technology is used to spray a 1mm-2mm cast iron coating on the inner surface of the cylinder bore 2 of the roughly machined engine block to obtain an engine block compounded with a uniform thickness of cast iron coating . It is especially suitable for the production and manufacture of cast aluminum engines, such as spraying cast ...

Embodiment 2

[0045] Such as figure 2 , 3 As shown, the improved engine block of the present invention also provides a second embodiment, which is different from Embodiment 1 in that: a nickel coating 12 is provided between the inner wall of the cylinder bore 2 and the wear-resistant layer 11, and the nickel coating The layer 12 includes an inner nickel coating 121 , a middle nickel coating 122 and an outer nickel coating 123 sequentially arranged along the cylinder body 1 from inside to outside.

[0046] A copper coating 13 is provided between the inner nickel coating 121 and the middle nickel coating 122 , and a copper coating 13 is provided between the middle nickel coating 122 and the outer nickel coating 123 .

[0047] Further, the thickness of the inner nickel coating 121 is 0.4mm-0.5mm, the thickness of the middle nickel coating 122 is 0.2mm-0.3mm, and the thickness of the outer nickel coating 123 is 0.15mm-0.2mm , the thickness of the copper coating 13 is 0.005mm-0.1mm.

[0048]...

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Abstract

The invention relates to an improved engine cylinder block and a manufacturing technique thereof. The improved engine cylinder block includes a cylinder block body; air cylinder holes are formed in the cylinder block body; and the inner wall of each air cylinder hole is provided with an abrasion resisting layer, and the abrasion resisting layer is of a cast iron coating. The manufacturing technique of the improved engine cylinder block includes: casting an engine cylinder block workblank and machining a locating basis, machining the air cylinder holes, performing stable heat treatment, performing texturing treatment, performing cleaning, performing coating, and boring holes. The beneficial effects of the improved engine cylinder block are that the inner walls of the air cylinder holes are provided with the abrasion resisting layers, the problem that the coefficients of thermal expansion of the air cylinder holes and a lining are different during combustion due to different materials in the prior art can be solved, the thermal deformation of the air cylinder holes of the engine can be effectively reduced, the manufacturing accuracy of the engine cylinder block can be improved, and the service life can be prolonged; AND the improved engine cylinder block is simple in manufacturing technique, is safe and reliable, and has wide prospect.

Description

technical field [0001] The invention relates to the technical field of automobile engine manufacturing, in particular to an improved engine cylinder block and a manufacturing process thereof. Background technique [0002] At present, a cylinder liner is installed in the cylinder barrel of the automobile engine block, and together with the piston and the cylinder head, the combustion chamber is formed. Cylinder liners are divided into two categories: dry cylinder liners and wet cylinder liners. The back of the dry liner does not touch the cooling water, while the back of the wet liner does. The dry cylinder liner is thin in thickness, simple in structure and convenient in processing. The wet cylinder liner is in direct contact with the cooling water, so it is beneficial to the cooling of the engine, and is conducive to the miniaturization and weight reduction of the engine. Choosing a good cylinder liner is the prerequisite to ensure the normal use of the engine. If the ou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02F1/18B32B15/01B32B15/18B32B15/20B23P15/00
Inventor 代卫东
Owner 代卫东
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