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Valve device with cylinder stop mechanism of ic engine

A technology for cylinder block and internal combustion engine, applied in the direction of cylinder, cylinder head, mechanical equipment, etc., can solve problems such as adverse effects, increase the time difference and residue of solidification time of light alloy casting parts such as aluminum alloys, etc. The effect of eliminating the solidification time difference and reducing the amount of gas

Inactive Publication Date: 2005-03-23
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The existence of the above-mentioned wide and thick-walled cast part in the light alloy of the cylinder block makes the wall thickness of the light alloy cast part such as aluminum alloy covering the outer peripheral part of the cylinder liner inconsistent. The expansion of the uniformity increases the time difference of the solidification time of the light alloy casting part such as aluminum alloy during the casting of the cylinder block. shrinkage, thermal deformation will remain, and since the light alloy casting part acts on the cylinder liner covering its outer peripheral part, an uneven force will act on the cylinder liner, which will have an adverse effect

Method used

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  • Valve device with cylinder stop mechanism of ic engine
  • Valve device with cylinder stop mechanism of ic engine
  • Valve device with cylinder stop mechanism of ic engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1 of the present invention will be described with reference to the drawings.

[0026] First, the structure of the cylinder block 10 and its peripheral structure, which are objects of improvement in this embodiment, will be described.

[0027] exist figure 1 In , the structure of the cylinder block 10 and its vicinity in the internal combustion engine E is shown.

[0028] figure 1 The lower part of the cylinder block part 10 shown in is fastened to the crankcase part 20 , while the upper part thereof is fastened to the cylinder head part 30 . Finally, the crankcase portion 20 , the cylinder block portion 10 and the cylinder head 30 are fastened to each other by stud bolts B .

[0029] In the crankcase part 20, a crankshaft 21 of which part shown is rotatably supported by a bearing 22, figure 1 The bearing on the left side is a ball bearing 22a, and the bearing 22 on the right side is a roller bearing 22b, and the state of use of these two bearings is pa...

Embodiment 2

[0047] Embodiment 2 differs from Embodiment 1 in the weight-reducing structure of the aluminum alloy casting part cast into the cylinder block 1 in which the Fe-made cylinder liner 2 is casted, but there are substantially no differences in other structural parts. Centering on the structure of the aluminum alloy casting part weight-reducing holes 8a-8d in the cylinder block 1 in which the Fe-made cylinder liner 2 is cast, the Figure 4 The above-mentioned Embodiment 2 will be described. The same reference numerals are used for structural parts that are substantially the same as those in Embodiment 1. FIG.

[0048] In this Example 2, figure 2 The weight-reducing holes 8a-8d for uniformizing the wall thickness in the cylinder block 1 before the modification shown above, the wide and thick-walled casting forming parts 7a-7d in the above-mentioned four lines L1-L4, that is, more specifically, the cylinder liner 2 The aluminum alloy cast parts 5a-5d near the outer peripheral part...

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Abstract

A cylinder block for an internal combustion engine, which is a cast cylinder block made of a light alloy that is integrally cast into the cylinder liner, and the wall thickness of the cast wall thickness part is uniform, so as to eliminate the solidification time difference of the cast wall thickness part in casting, And make the force holding the cylinder liner even. An iron cylinder liner (2) is integrally cast into the aluminum alloy cylinder block (1), and bolt holes for fixing the above-mentioned cylinder block (1) are provided on the aluminum casting part enclosing the outer peripheral portion (2a) of the cylinder liner (3a-3d). Therefore, the connecting portion connecting the peripheral portion of the bolt holes (3a-3d) and the outer peripheral portion of the cylinder liner (2a) is a wide and thick-walled connection casting portion (6a-6d), and the wide and thick-walled connection casting portion (6a-6d ) are provided with weight-reducing parts (8a-8d), thereby achieving uniform wall thickness of the aluminum casting part wrapped in the outer peripheral part (2a) of the cylinder liner.

Description

technical field [0001] The present invention relates to a cylinder block for an internal combustion engine, and in particular to an improvement technology for a cylinder block of an air-cooled internal combustion engine. out of shape. Background technique [0002] The shape of the cylinder block for general internal combustion engines is as follows: Figure 7 As shown in the three-dimensional view, in most cases, the iron (cast iron) cylinder liner with a circular cross section is integrally cast into the iron (cast iron) cylinder liner with a circular cross section, or the iron (cast iron) cylinder liner is pressed into the cylinder liner made of aluminum alloy In many cases, it is not necessary to homogenize the wall thickness of the light alloy casting part that is worried about the influence of heat in the peripheral part of the cylinder liner wrapped in the iron cylinder liner. Full consideration. [0003] Generally, the periphery of the fixing bolt hole for fastening...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02F1/00F02F1/08F02F1/24
Inventor 神户敬司水谷文则小林修二
Owner HONDA MOTOR CO LTD
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