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Blow-by Gas Passage Structure

一种窜气、通路的技术，应用在曲轴箱通风、发动机元件、机器/发动机等方向，能够解决油成分分离效率下降、阻挡效果下降等问题，达到防止窜气通过间隙、提高阻挡效果的效果

Active Publication Date: 2016-11-23
TOYOTA BOSHOKU KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the blocking effect of the blow-by gas decreases, resulting in a decrease in the separation efficiency of the oil component in the blow-by gas

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) The structure of the channel structure of the blow-by gas

[0043] Such as figure 1 and figure 2 As shown, the blow-by gas passage structure 1 of this embodiment is provided in the separation chamber S formed between the cylinder head cover 2 and the baffle plate 3 . The passage structure 1 for blow-by gas constitutes a passage for the blow-by gas introduced into the separation chamber S. As shown in FIG.

[0044] The cylinder head cover 2 is formed of a resin material, and is formed in a box shape with an open bottom. In addition, the baffle plate 3 is formed of a resin material, and is joined to the head cover 2 at a welded portion 4 so as to close the bottom side of the head cover 2 by vibration welding. In addition, the head cover 2 and the baffle plate 3 respectively include facing surfaces 2 a , 3 a that face each other in the vertical direction P of the head cover 2 . In addition, a planar direction substantially perpendicular to the vertical direction ...

Embodiment 2

[0062] Next, the channel structure of the blow-by gas in the second embodiment will be described. In addition, in the blow-by gas passage structure of the present embodiment 2, structural parts substantially the same as those of the blow-by gas passage structure 1 of the above-mentioned embodiment 1 are denoted by the same reference numerals, and detailed description thereof will be omitted.

[0063] (1) The structure of the channel structure of the blow-by gas

[0064] Such as image 3 and Figure 4 As shown, the blow-by gas passage structure 1' of this embodiment is provided in the separation chamber S formed between the cylinder head cover 2 and the baffle plate 3. An oil leak hole 8 is formed in the baffle plate 3 in the vicinity of the discharge port 6 (that is, the PCV valve 7 ) of the head cover 2 .

[0065] The blow-by gas passage structure 1' includes first ribs 11a, 12a, 13a and second ribs 11b, 12b, 13b for detour, rib 14 for detour, and first rib 23a and second ri...

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PUM

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Abstract

The present invention provides a blow-by gas passage structure which can improve the separation efficiency of the oil component contained in a blow-by gas. The blow-by gas passage structure is provided inside a separator chamber that is formed between a cylinder head cover and a baffle plate joined to the cylinder head cover by vibration welding. A first rib is provided on the opposite surface of one member of the cylinder head cover and the baffle plate, while a second rib is provided on the opposite surface of the other member, at positions upstream of the first rib in the flow of the blow-by gas and adjacent a gap formed between the distal end of the first rib and the opposite surface of the other member. The second rib has a height that is equal to or larger than the height of the gap so as to prevent passing of the blow-by gas through the gap.

Description

technical field [0001] The present invention relates to a passage structure of blow-by gas, and more specifically, relates to a passage of blow-by gas provided in a separation chamber formed between a cylinder head cover and a baffle plate joined to the cylinder head cover by vibration welding structure. Background technique [0002] As a conventional oil mist separator, an oil mist separator provided in a separation chamber formed between a cylinder head cover and a baffle plate joined to the cylinder head cover by vibration welding is generally known (for example, refer to Japanese Patent Laid-Open No. 2011- Bulletin No. 58433). In this conventional oil mist separator, for example, as Figure 5 and Figure 6 As shown, on the surface of the cylinder head cover 102 and / or the baffle plate 103, detour ribs 111 for detouring (snaking) the blow-by gas in the separation chamber S along the planar direction are erected. Then, the blow-by gas introduced into the separation cham...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01M13/04
CPCF01M13/0405F01M13/0416F01M2013/0461F02F7/006
Inventor 名和辉好
Owner TOYOTA BOSHOKU KK
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