Composite and assembly construction of engine valve oil seal and valve spring retainer

A technology of engine valves and valve springs, which is applied in the direction of engine components, machines/engines, valve devices, etc., can solve problems affecting engine performance, etc., and achieve the effects of reducing production cycle, improving shock absorption effect, and reducing the number of parts

Inactive Publication Date: 2009-12-23
CHONGQING CHANGAN AUTOMOBILE CO LTD
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore the existence of above-mentioned prob

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
  • Composite and assembly construction of engine valve oil seal and valve spring retainer
  • Composite and assembly construction of engine valve oil seal and valve spring retainer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] according to figure 1 As shown, the engine valve oil seal and valve spring seat combination includes a valve spring seat 1 and a valve oil seal 2 integrated into an integral composite structure. The valve oil seal 2 is in the shape of a sleeve with openings at both ends. The valve spring base 1 is tightly fitted outside the valve oil seal 2. The middle section of the inner wall of the valve oil seal 2 has rubber protruding teeth 21 that are interference fit with the outer wall of the valve guide. The upper opening of the valve oil seal 2 is narrowed to form an upper lip 22 of a tight fitting valve, and the upper lip 22 protrudes beyond the upper opening of the valve spring base 1 . And the upper opening of the valve spring base has a closing edge 11, which is nested in the shoulder of the upper opening of the valve oil seal. The lower opening of the valve spring base has an eversion plane 3 which is in contact with the plane of the cylinder head and supports the valve ...

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 provides a composite and assembly construction of an engine valve oil seal and a valve spring retainer. The construction comprises the valve spring retainer, the valve oil seal, an enclasping spring, a valve guide and a valve passing through the valve guide. The valve spring retainer and the valve oil seal are arranged as an integral composite construction, the valve oil seal takes a shape of a sleeve with two open ends, the valve spring retainer is closely sheathed outside the valve oil seal, the valve oil seal is sheathed on the valve guide, and rubber raised teeth are arranged on a middle section of an inner wall of the valve oil seal for interference fit with the valve guide; an upper opening of the valve oil seal is tapered to form an upper lip, and the upper lip is closely sheathed on the valve and assembled with the enclasping spring outside; a lower opening of the valve spring retainer has an everted plane, a lower surface of the everted plane contacts a plane of a cylinder cap and an upper surface of the everted plane supports a valve spring. The technical scheme can avoid inclination in assembling the valve oil seal and improve damping effect of the valve spring retainer.

Description

technical field [0001] The invention belongs to the field of gas distribution of automobile engines, and in particular relates to structures such as engine valve oil seals, valve spring seats and assembly. Background technique [0002] In the engine gas distribution system, the valve oil seal and the valve spring seat are two key components. The function of the engine valve oil seal is to form an interference fit between the oil seal lip and the valve, so that the oil does not enter the engine combustion chamber and affect the performance of the engine. The function of the valve spring seat is to form an effective support for the valve spring, so that the valve can be opened and closed smoothly. [0003] The traditional engine valve oil seal and the valve spring base are two separate parts without direct connection. The valve oil seal is installed on the valve guide, mainly by the interference fit between their large grooves and protrusions. Due to the small contact surfa...

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
IPC IPC(8): F01L3/08
Inventor 彭红陈彦向以轩彭革孟娇
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap