Ceramic sheathed internal combustion engine piston and manufacturing method thereof

A manufacturing method and internal combustion engine technology, applied in the direction of pistons, mechanical equipment, engine components, etc., can solve the problems of internal combustion engine combustion chamber temperature reduction, low thermal conductivity, brittle and brittle ceramic materials, etc., to reduce heat loss, increase heat engine efficiency, The effect of reducing heat transfer

Inactive Publication Date: 2012-08-01
WUXI INST OF ARTS & TECH +1
View PDF8 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the heat absorption and heat dissipation of the liquid cooling system, part of the heat energy will be consumed, which will reduce the temperature of the combustion chamber of the internal combustion engine. In some cases, the fuel in the combustion chamber will not burn quickly and completely, reducing the heat engine efficiency of the internal combustion engine. Harmful gases from incomplete combustion will be produced, polluting the environment
[0003] In view of the above situation, there are some materials that use the high temperature resistance of ceramic materials to manufacture water-free ceramic internal combustion engines, but due to the brittleness of ceramic materials, it does not have Basic assembly and use strength, so there are difficulties in the production and use

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
  • Ceramic sheathed internal combustion engine piston and manufacturing method thereof
  • Ceramic sheathed internal combustion engine piston and manufacturing method thereof
  • Ceramic sheathed internal combustion engine piston and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] Example 1: Such as figure 1 Shown is a ceramic armored internal combustion engine piston, including a metal body piston 1 and a ceramic top plate 2. The ceramic top plate 2 is cast on the top of the metal metal body piston 1. The outer surface and size of the ceramic top plate 2 meet the requirements of the piston top, that is, the ceramic top plate 2 The shape and size of the outer surface are the same as the top of the metal piston. A number of ceramic nails 3 are evenly distributed on the inner surface of the ceramic top plate 2. One end of each ceramic nail 3 is connected to the inner surface of the ceramic top plate 2, and the other end is embedded in the metal. Body in the piston 1.

[0028] Among them, the thickness of the ceramic top plate 2 is 5 mm, and the material is silicon nitride ceramic; the ceramic nail 3 is cylindrical with a diameter of 5 mm and a height of 5 mm. The total cross-sectional area of ​​all ceramic nails 3 accounts for 30% of the area of ​​th...

Example Embodiment

[0036] Example 2: Basically the same as Example 1, except for the requirements of the ceramic top plate 2 and the ceramic nail 3, and the heating temperature in step 3) during preparation;

[0037] The ceramic top plate 2 is made of alumina ceramics with a wall thickness of 8mm; the thickness of the ceramic top plate 2 is 8mm and the material is alumina ceramic; the ceramic nail 3 is cylindrical with a diameter of 8mm and a height of 8mm; all ceramic nails 3 The total cross-sectional area accounts for 20% of the area of ​​the ceramic top plate 2.

[0038] During preparation, in step 3), the ceramic top plate 2 or the integral casting sand mold is heated to 700° C. to be cast.

[0039] Compared with similar models, the heat dissipation loss of the piston can be reduced by 20%, the temperature of the combustion chamber of the cylinder can be increased by 200 DEG C, and the heat engine efficiency can be increased by 10%.

Example Embodiment

[0040] Example 3: Basically the same as Example 1, except for the requirements of the ceramic top plate 2 and the ceramic nail 3, and the heating temperature in step 3) during preparation;

[0041] The ceramic top plate 2 is made of silicon oxide ceramics with a wall thickness of 10 mm; the ceramic top plate 2 has a thickness of 5 mm to 10 mm. The ceramic nail 3 is cylindrical, with a diameter of 10 mm and a height of 10 mm. The total cross-sectional area of ​​all ceramic nails 3 accounts for 25% of the area of ​​the ceramic top plate 2.

[0042] During preparation, in step 3), the ceramic top plate 2 or the integral casting sand mold is heated to 800° C. to be cast.

[0043] Compared with similar models, the heat dissipation loss of the piston can be reduced by 15%, the temperature of the combustion chamber of the cylinder can be increased by 150 DEG C, and the heat engine efficiency can be increased by 8%.

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

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses a ceramic sheathed internal combustion engine piston and a manufacturing method thereof. The piston comprises a metal body piston and a ceramic top plate sheathed on the top of the metal body piston, wherein a plurality of cylindrical ceramic nails are uniformly distributed on the inner surface of the ceramic top plate; and the metal body piston and the ceramic top plate are connected into a whole through the cylindrical ceramic nails. According to the internal combustion engine piston, high-temperature heat transmitted from a combustion chamber of an internal combustion engine to the metal body piston is effectively reduced, so that the metal body piston is effectively prevented from being eroded; and the temperature in the combustion chamber of the internal combustion engine is increased conveniently, so that fuels are combusted more quickly and more completely, and the heat engine efficiency of the internal combustion engine is improved. The manufacturing method for the internal combustion engine piston sheathed with a ceramic coverage layer is simple, the requirement on processing precision is low, and a modern manufacturing technology can be realized.

Description

technical field [0001] The invention relates to a piston of an internal combustion engine, in particular to a piston of an internal combustion engine with a ceramic covering layer on the top of the piston and a manufacturing method thereof. Background technique [0002] At present, the internal combustion engine pistons are all made of metal materials. In order to prevent the piston temperature from being too high when the internal combustion engine is working, which will affect the use of the piston, a strong liquid cooling system is installed in the internal combustion engine to ensure that the internal combustion engine works normally at a temperature that is not too high. . Due to the heat absorption and heat dissipation of the liquid cooling system, part of the heat energy will be consumed, which will reduce the temperature of the combustion chamber of the internal combustion engine. Harmful gases from incomplete combustion will be produced, polluting the environment. ...

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): F02F3/00B22D19/00
Inventor 顾永成刘宣飞谢建平张萍辉
Owner WUXI INST OF ARTS & TECH
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