Unlock instant, AI-driven research and patent intelligence for your innovation.

Water-cooled dual-fuel engine intake valve stand

A dual-fuel engine, water-cooled technology, applied in the direction of engine components, machines/engines, mechanical equipment, etc., can solve the problems of valve and valve seat sealing performance reduction, corrosion, engine power drop, etc., to solve split cracking, wear resistance Good performance and prolong service life

Inactive Publication Date: 2007-10-03
力帆科技(集团)股份有限公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the intake valve seat in the water-cooled engine cylinder head of dual-fuel three-wheel and four-wheel motorcycles is generally a single-layer structure composed of iron-based powder layers containing carbon, chromium, copper, etc., because the intake valve seat is in the engine cylinder head In China, the user has used dual fuel for a long time, and the operating temperature of the intake valve seat is usually above 1000°C, and is subjected to high-frequency impact and wear. After a period of use, the surface of the intake valve seat will appear depressions and corrosion, making the valve Reduced sealing performance with the valve seat, resulting in reduced engine power
In order to improve the heat resistance and wear resistance of the intake valve seat, someone thought of spraying alloy powder on the intake valve seat, but there was a new problem of cracking during use, and the service life was still not improved. Complicated and expensive to manufacture, so not popularized

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
  • Water-cooled dual-fuel engine intake valve stand
  • Water-cooled dual-fuel engine intake valve stand

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Take 1.0 kg of carbon, 0.65 kg of chromium, 1.6 kg of copper, and 96.75 kg of iron, which are all in powder form, and put them together as the processing raw materials for bottom layer 2; take 1.0 kg of carbon, 4.5 kg of chromium, and 4.0 kg of molybdenum, all in powder form 11.0 kg of copper, 1.8 kg of nickel, 5.8 kg of cobalt, and 71.9 kg of iron are used as raw materials for the sealing surface 1 as a spare, and the water-cooled dual-fuel engine intake valve seat of the present invention is prepared according to the following process steps:

[0016] a. Put the raw materials (powder) of the above-mentioned sealed surface layer 1 and bottom layer 2 into two mixers and mix them evenly;

[0017] b. Firstly, quantitatively place the powdered mixture of the bottom layer 2 after stirring into the molding die for compression molding;

[0018] c. Then quantitatively place the powdered mixture of the sealed surface layer 1 after stirring on the bottom layer 2 which has been presse...

Embodiment 2

[0026] Take 1.0 kilograms of carbon, 0.8 kilograms of chromium, 2.0 kilograms of copper and 96.2 kilograms of iron, which are all in powder form, and put them together as the processing raw materials for the bottom layer 2. Take 1.0 kilograms of carbon, 5.0 kilograms of chromium, and 4.0 kilograms of molybdenum, which are all powdered. 12.0 kg of copper, 2.0 kg of nickel, 6.0 kg of cobalt, and 70.0 kg of iron are put together as the processing raw materials for the sealing surface layer 1, and the intake valve seat of the water-cooled dual-fuel engine of the present invention is prepared according to the following process steps:

[0027] a. Put the raw materials (powder) of the above-mentioned sealed surface layer 1 and bottom layer 2 into two mixers and mix them evenly;

[0028] b. Firstly, quantitatively place the powdered mixture of the bottom layer 2 after stirring into the molding die for compression molding;

[0029] c. Then quantitatively place the powdered mixture of the s...

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

One kind of water cooling double fuel engine air intake valve place, the place body for the ring-like main body shape, an end which in controls for taper hole, (1) and the first floor (2) constitutes by two hard and the metal powder levels and the seal surface layer, first floor (2) composes and the quality percentage is: Carbon: 0.7~1.4, chromium: 0.3~2.0, copper: 2.0~4.0, the remainder is an iron; The dense sealing course (1) composes and the quality percentage is: Carbon 0.7~1.4, chromium: 4.0~6.0, molybdenum: 4.0~6.5, copper: 6.0~10.0, nickel: 2.0~3.0, cobalt: 5.0~8.5, the remainder is an iron. The invention and the traditional monolayer platoon valve seat compares, the thermal stability, the resistance to wear has the enhancement, effective addressing row of valve seat branch dehiscence question, thus lengthened the row of valve seat service life.

Description

Technical field [0001] The invention relates to a motorcycle engine accessory, in particular to an intake valve seat of a water-cooled dual-fuel engine. Background technique [0002] At present, the intake valve seat in the cylinder head of the dual-fuel three-wheel and four-wheel motorcycle water-cooled engine is generally a single-layer structure composed of an iron-based powder layer containing carbon, chromium, copper, etc., because the intake valve seat is in the engine cylinder head. If the user uses dual fuel for a long time, the operating temperature of the intake valve seat is usually above 1000 ℃, and is subjected to high-frequency impact and wear. After a period of use, the surface of the intake valve seat will appear recessed and corroded, which will make the valve The sealing performance between the valve seat and the valve seat is reduced, which in turn causes the engine power to decrease. In order to improve the heat resistance and wear resis...

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 Patents(China)
IPC IPC(8): F01L3/02
Inventor 尹明善吴丹
Owner 力帆科技(集团)股份有限公司