Sealing structure of the oil leakage hole of the cylinder head gasket

A technology of sealing structure and oil leakage hole, which is applied in the direction of engine sealing, engine sealing device, machine/engine, etc., can solve the problems of increasing the number of sealing sheets and increasing the cost, and achieve good sealing effect

Active Publication Date: 2011-11-30
NIPPON GASKET CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Therefore, conventionally, in an engine in which the openings of the cylinder head and the cylinder block on the outer side of the engine are large, the number of sealing sheets needs to be increased according to the openings, resulting in an increase in cost.

Method used

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  • Sealing structure of the oil leakage hole of the cylinder head gasket
  • Sealing structure of the oil leakage hole of the cylinder head gasket
  • Sealing structure of the oil leakage hole of the cylinder head gasket

Examples

Experimental program
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Embodiment Construction

[0033] Hereinafter, the present invention will be described according to the illustrated embodiments. figure 1 Among them, the cylinder head gasket 1 of this embodiment includes: four combustion chamber holes 2 arranged in a straight line; a plurality of bolt holes 3 for inserting fastening bolts not shown in the figure; a plurality of oil leakage holes 4 .

[0034] The above-mentioned bolt holes 3 are disposed at four positions around each combustion chamber hole 2 in a surrounding manner, but the bolt holes 3 between adjacent combustion chamber holes 2, 2 are shared by both combustion chamber holes 2, 2, so , a total of 10 bolt holes 3 are formed.

[0035] In addition, the above-mentioned oil leak hole 4 is provided at three places on one side in the longitudinal direction of the cylinder head gasket 1, and is provided on the outer side of each of the three bolt holes 3 provided in common to the adjacent combustion chamber holes 2, 2 (combustion chamber opposite side of t...

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PUM

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Abstract

The invention provides a sealing structure for an oil leakage hole of a cylinder head gasket. The cylinder head gasket (1) comprises at least two first sealing sheets (11) and second sealing sheets (12) respectively perforated with oil leakage holes (4). The first sealing sheet and the second sealing sheet are formed with ring-shaped half-layers (11a, 12a) surrounding the oil leak hole and protruding toward each other to be pressed against each other. The oil leakage hole is sealed by the half-layer. Auxiliary beads (11c, 12c) protruding toward each other and pressed against each other are formed at positions outside the respective half beads. The protruding direction of the above-mentioned half bead and auxiliary bead can also be opposite to the above-mentioned protruding direction. Since each auxiliary bead (11c, 12c) exerts force on each half bead (11a, 12a) to push each half bead (11a, 12a) to the cylinder head or cylinder block, it can ensure better sealing performance than conventional .

Description

technical field [0001] The present invention relates to a cylinder head gasket, and more specifically, to a sealing structure for sealing an oil leakage hole provided in the cylinder head gasket. Background technique [0002] Conventionally, a cylinder head gasket having at least two sealing sheets is known. For example, the cylinder head gasket described in Patent Document 1 has three sealing sheets. [0003] Conventionally, there is also a known technique in which an engine has an oil leak hole. Although it is not described in Patent Document 1, an oil leak hole is also formed on each of the three sealing sheets. And the oil leakage hole is sealed by a half bead (half bead) which is formed on each sealing piece and surrounds the oil leakage hole in an annular shape. [0004] In addition, conventionally, as a gasket for an exhaust manifold, there is known a structure in which a full bead (full bead) and a half bead surrounding an exhaust passage are concentrically formed o...

Claims

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Application Information

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IPC IPC(8): F16J15/08F02F11/00
CPCF16J2015/0856F16J2015/085F16J15/0825F16J2015/0875F02F11/002F02F11/00F16J15/08
Inventor武田安麿草野雅则
OwnerNIPPON GASKET CO LTD