Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Cylinder head gasket

A technology of gaskets and cylinder heads, which is used in engine sealing, engine sealing devices, machines/engines, etc., can solve the problems of easy cracks and accelerated deformation of cylinder barrels, so as to reduce indentation, restrain deformation, and restrain surface The effect of rising pressure

Inactive Publication Date: 2007-11-21
TOYOTA JIDOSHA KK +1
View PDF2 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in this cylinder head gasket, the tightening pressure (sealing pressure) at the edge of the cylinder port becomes the highest, so the problem of accelerated deformation of the cylinder bore cannot be solved.
In addition, the folded portion is directly folded back, and the folded radius of the folded portion is small, so there is a problem that cracks are likely to occur

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Cylinder head gasket
  • Cylinder head gasket
  • Cylinder head gasket

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] Next, embodiments of the cylinder head gasket of the present invention will be described with reference to the drawings. In addition, Fig. 1 to Fig. 6 are schematic explanatory diagrams, in order to make the structure easier to understand, the dimensions such as the plate thickness, the size of the hole for the cylinder bore, the size of the folded part, and the size of the flange are all different from the actual size. , exaggerated to express.

[0043] The cylinder head gasket of the present invention is a metal gasket sandwiched between engine components such as the cylinder head and the cylinder block of the engine, and is resistant to the high temperature and high pressure combustion gas of the cylinder bore, the cooling water passage, the cooling oil passage, etc. Cooling water, engine oil and other fluids are sealed.

[0044] The cylinder head gasket is composed of a single or a plurality of metal constituent plates (metal substrates) formed of mild steel plates...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provide a cylinder head gasket having sufficient sealing performance around a cylinder bore hole while suppressing the deformation of a cylinder bore of an engine. The cylinder head gasket 1 comprises: a first metal structural plate 10 having a folded back portion 11 and formed around the cylinder bore hole 2; and full beads 21 formed opposite to each other on a second metal structural plate 20 and a third metal structural plate 30, respectively, holding the first metal structural plate 10 therebetween with their protrusions on the sides of the first metal structural plate 10, the full beads 21 which have protruded portions 21a arranged on the inner periphery side of an end 11a of the folded back portion 11. At least one or more sub plates 40, 50 are inserted and arranged inside the folded back portion 11. Thicknesses t2 of the second metal structural plate 20 and the third metal structural plate 30 around the cylinder bore hole 2 are respectively smaller than a half th of a thickness tg of the folded back portion 11.

Description

technical field [0001] The present invention relates to a cylinder head gasket sandwiched between two components such as a cylinder head and a cylinder block of an engine for sealing. In the event of misalignment, the increase in surface pressure on the front end of the cylinder bore can also be suppressed, thereby reducing the cylinder head gasket such as indentations that occur on components. Background technique [0002] The cylinder head gasket is clamped between the cylinder head and the cylinder block of the automobile engine, and is connected by the cylinder head bolts to seal fluids such as combustion gas, engine oil, and cooling water. [0003] In addition, due to the recent reduction in the weight and size of the engine, the engine tends to be lower in rigidity. When the cylinder head gasket is sealed, when a large sealing surface pressure is applied to the front part of the cylinder bore in order to ensure the sealing performance, due to the engine The rigidity o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/08F02F11/00
Inventor 木下裕一安田纪章大贯卓吉岛一也
Owner TOYOTA JIDOSHA KK
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com