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Cylinder block and cylinder sleeve, method of producing cylinder block and cylinder sleeve by friction stir welding, and friction stir welding method

A technology of friction stir welding and friction stir, which is applied in the direction of manufacturing tools, cylinders, cylinder heads, etc., can solve problems such as difficult welding cylinder liners, and achieve good mechanical strength, rigidity, and good appearance

Inactive Publication Date: 2006-03-08
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this process can cause the cylinder block main body 5 or the cylinder liner 4 to be strained by the heat generated when they are welded to each other
In addition, if the cylinder block body 5 is made by the HPDC process, it is difficult to weld the cylinder liner 4
[0013] As mentioned above, various difficulties are encountered in the manufacture of top-closed cylinder blocks with small volumes

Method used

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  • Cylinder block and cylinder sleeve, method of producing cylinder block and cylinder sleeve by friction stir welding, and friction stir welding method
  • Cylinder block and cylinder sleeve, method of producing cylinder block and cylinder sleeve by friction stir welding, and friction stir welding method
  • Cylinder block and cylinder sleeve, method of producing cylinder block and cylinder sleeve by friction stir welding, and friction stir welding method

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Embodiment Construction

[0173] A top-closed cylinder block made when the cylinder liner is joined to the cylinder block main body and a friction stir welding method for joining the cylinder liner to the cylinder block main body will be described in detail below with reference to the accompanying drawings. Preferred embodiment of the cylinder liner.

[0174] First, the first embodiment will be described below.

[0175] figure 1 is a vertical sectional view of the cylinder block 10 according to this first embodiment, and figure 2 is a plan view of the cylinder block 10 viewed from the gasket surface 12 as its upper end surface. The cylinder block 10 includes: a cylinder block main body 18 made of aluminum and having a communicating hole (cylinder bore) 16 including a first annular recess 13 and a second annular recess 14; cylinder liners 20a to 20c, which inserted into the communication hole 16 and engaged on the cylinder block main body 18; and a water jacket 22 to which coolant for cooling the c...

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Abstract

A reduced-diameter portion (44) with a taper portion (46), a portion whose diameter is reduced in a tapered form, is provided on an inner peripheral wall of a cylinder sleeve (20a, 20b, 20c). On the outer peripheral wall of the top end of the cylinder sleeve (20a, 20b, 20c) is provided a large diameter portion (36a, 36b, 36c) projected outward along the diameter direction. Under the action of a friction stir welding tool (50), the cylinder sleeve (20a, 20b, 20c) inserted in a communication hole (16) of a block body (18) is joined to the block body (18) with the reduced-diameter portion (44) and the large-diameter portion (36a, 36b, 36c) in between. A closed deck-type cylinder block (10) is constructed with the process above. In the cylinder block (10), the gasket face (12) side of a water jacket (22) is closed by the large-diameter portion (36a, 36b, 36c).

Description

technical field [0001] The present invention relates to a cylinder block for an internal combustion engine, a cylinder liner for the cylinder block, a method of manufacturing the cylinder block and the cylinder liner, and a friction stir welding method suitable for joining the cylinder liner and the body of the cylinder block. Background technique [0002] A kind of cylinder block used in the internal combustion engine of automobile etc. is a closed-deck (closed-deck) cylinder block 1, as shown in the accompanying drawing Figure 58 shown in . Since the top-closed cylinder block 1 has the water jacket 2 closed at the gasket surface 3, the top-closed cylinder block 1 has the advantage that it is more efficient than the top-open cylinder block with the water jacket opened at the gasket surface. rigidity. [0003] The top-closed cylinder block 1 is generally manufactured as follows. First, a cavity is provided by a casting mold, and a self-collapsing core and a highly wear-re...

Claims

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Application Information

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IPC IPC(8): F02F1/00F02F1/16B23K20/12
Inventor 砂田俊秀伊势田泰小杉雅纪长尾和心
Owner HONDA MOTOR CO LTD
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