CN203685333U - Air valve with thermal barrier coating layer - Google Patents
Air valve with thermal barrier coating layer Download PDFInfo
- Publication number
- CN203685333U CN203685333U CN201320864542.4U CN201320864542U CN203685333U CN 203685333 U CN203685333 U CN 203685333U CN 201320864542 U CN201320864542 U CN 201320864542U CN 203685333 U CN203685333 U CN 203685333U
- Authority
- CN
- China
- Prior art keywords
- air valve
- valve
- barrier coating
- thermal barrier
- coating layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses an air valve with a thermal barrier coating layer, and relates to the field of machinery. The air valve with the thermal barrier coating layer comprises an air valve main body, wherein the air valve main body comprises an air valve seat, an air valve rod and a transitional part between the air valve rod and the air valve seat; the thermal barrier coating layer is also partially arranged outside the air valve main body and at least covers 1/3 of the upper surface of the air valve seat and 1/5 of the outer surface of the air valve rod. Due to the arrangement of the thermal barrier coating layer, shielding on a heated surface is selectively implemented; partial surface of the air valve is shielded so as to limit the circulation amount of heat conducted towards the air valve and generated by hog air; the conducted heat circulation amount towards the air valve is reduced, so that heat can be more easily conducted from the air valve seat to the upper end of the air valve rod, therefore, the actual temperature of the air valve seat and the air valve rod are lowered.
Description
Technical field
The utility model relates to mechanical field, is specifically related to valve.
Background technique
Valve is a kind of vitals of motor.The effect of valve is be responsible for specially to input air in motor and discharge the waste gas after burning.
From engine structure, be divided into intake valve (inlet valve) and exhaust valve (exhaust valve).The effect of intake valve is by air intake motor, burns with fuel mix; The effect of exhaust valve is that the waste gas after burning is discharged and dispelled the heat.
The each cylinder of conventional engines only has an intake valve and an exhaust valve, and this project organization is relatively simple, and cost is lower, easy to maintenance, and low-speed performance is better, and shortcoming is that power is difficult to improve, especially when high rotating speed low, the performance of charging efficiency a little less than.In order to improve intake and exhaust efficiency, the many Valves Technology of many employings now, commonly each cylinder arrangement has 4 valves (also have the design of 3 or 5 valves of single cylinder, principle is the same, as the motor of the A6 of Audi), 4 cylinders are exactly altogether 16 valves, this many air valve structures easily form compact type firing chamber, and oil sprayer is arranged in central authorities, can make like this air-fuel mixture gas firing more rapidly, more even, weight and the aperture of each valve suitably reduce, and make the speed of valve opening or closure faster.
Valve bears extreme heat and mechanical load in the course of the work, makes to have in engine application the requirement of very high hot strength and thermostability.The exploitation of the motor of the exploitation of new engine, especially output power, has proposed more to enter high technical requirements for Engine Valve Materials.The exploitation of nickel-base alloy, and the introducing of hollow valve filled with sodium are some counter-measures that industry is being done aspect high-performance enginer valve.But these measures have its corresponding manufacture and cost of material.
Model utility content
The purpose of this utility model is also, a kind of valve that is provided with thermal barrier coating is provided.
The technical problem that the utility model solves can realize by the following technical solutions:
A kind of valve that is provided with thermal barrier coating, comprise a valve main body, described valve main body comprises the transition portion between valve seat, valve stem, valve stem and valve seat, it is characterized in that, described valve main body outward also part be provided with thermal barrier coating, described thermal barrier coating at least cover described valve seat upper surface 1/3rd, described valve stem outer surface 1/5th.
Heat conduction to exhaust valve body in motor is mainly undertaken by following two kinds of modes, 1. the heat that the indoor high-temperature gas of engine combustion transmits to valve seat exterior edge face, 2. in exhaust valve chamber, because the thermoconvection of the bottom of the valve stem that the flow at high speed of high-temperature fuel gas causes and the rear surface of valve seat is conducted heat.The present invention carries out the shielding of heating surface by thermal barrier coating is set, reach the heat conducting discharge value to valve that restriction hot air produces, because the heat-conducting flow flux to valve reduces, heat can easierly conduct from valve seat to valve stem upper end, thereby reduces the true temperature of valve seat and valve stem.Finite element method (fem) analysis proves can effectively reduce at the surface of exhaust valve interpolation thermal barrier coating the operating temperature on valve surface.And part thermal barrier coating can also solve the abrasion and corrosion problem that efficient EGR causes.
The thickness of described thermal barrier coating is not more than 0.7 millimeter, adopts after this scheme, can obtain the effective temperature of valve stem and reduce.
For guaranteeing that thermal barrier coating has enough heat shieldings to valve, the thickness of described thermal barrier coating is not less than 0.1 millimeter.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with further elaboration the utility model of concrete diagram.
With reference to Fig. 1, a kind of valve that is provided with thermal barrier coating, comprise a valve main body, valve main body comprises the transition portion between valve seat 2, valve stem 1, valve stem and valve seat, valve main body outward also part be provided with thermal barrier coating 3, thermal barrier coating 3 at least coating gas gate seat 2 upper surfaces 1/3rd, valve stem 1 outer surface 1/5th.Heat conduction to exhaust valve body in motor is mainly undertaken by following two kinds of modes, 1. the heat that the indoor high-temperature gas of engine combustion transmits to valve seat exterior edge face, 2. in exhaust valve chamber, because the thermoconvection of the bottom of the valve stem that the flow at high speed of high-temperature fuel gas causes and the rear surface of valve seat is conducted heat.The present invention carries out the shielding of heating surface by thermal barrier coating is set, reach the heat conducting discharge value to valve that restriction hot air produces, because the heat-conducting flow flux to valve reduces, heat can easierly conduct from valve seat to valve stem upper end, thereby reduces the true temperature of valve seat and valve stem.Finite element method (fem) analysis proves can effectively reduce at the surface of exhaust valve interpolation thermal barrier coating the operating temperature on valve surface.
The thickness of thermal barrier coating is preferably not more than 0.7 millimeter.Adopt after this scheme, can obtain effective reduction of valve stem temperature.
More than show and described basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
1. be provided with a valve for thermal barrier coating, comprise a valve main body, described valve main body comprises the transition portion between valve seat, valve stem, valve stem and valve seat, it is characterized in that, described valve main body is also partly provided with thermal barrier coating outward.
2. a kind of valve that is provided with thermal barrier coating according to claim 1, is characterized in that: described thermal barrier coating at least cover described valve seat upper surface 1/3rd, described valve stem outer surface 1/5th.
3. a kind of valve that is provided with thermal barrier coating according to claim 2, is characterized in that: the thickness of described thermal barrier coating is not more than 0.7 millimeter.
4. a kind of valve that is provided with thermal barrier coating according to claim 2, is characterized in that: the thickness of described thermal barrier coating is not less than 0.1 millimeter.
Claims (4)
1. be provided with a valve for thermal barrier coating, comprise a valve main body, described valve main body comprises the transition portion between valve seat, valve stem, valve stem and valve seat, it is characterized in that, described valve main body is also partly provided with thermal barrier coating outward.
2. a kind of valve that is provided with thermal barrier coating according to claim 1, is characterized in that: described thermal barrier coating at least cover described valve seat upper surface 1/3rd, described valve stem outer surface 1/5th.
3. a kind of valve that is provided with thermal barrier coating according to claim 2, is characterized in that: the thickness of described thermal barrier coating is not more than 0.7 millimeter.
4. a kind of valve that is provided with thermal barrier coating according to claim 2, is characterized in that: the thickness of described thermal barrier coating is not less than 0.1 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320864542.4U CN203685333U (en) | 2013-12-25 | 2013-12-25 | Air valve with thermal barrier coating layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320864542.4U CN203685333U (en) | 2013-12-25 | 2013-12-25 | Air valve with thermal barrier coating layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203685333U true CN203685333U (en) | 2014-07-02 |
Family
ID=51007248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320864542.4U Expired - Fee Related CN203685333U (en) | 2013-12-25 | 2013-12-25 | Air valve with thermal barrier coating layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203685333U (en) |
-
2013
- 2013-12-25 CN CN201320864542.4U patent/CN203685333U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Subramanian et al. | Piston bowl optimization for single cylinder diesel engine using CFD | |
| CN103256125B (en) | System for hydraulic compression control over combustion of homogeneous gas mixture of internal-combustion engine | |
| CN103925028A (en) | Partially-coated valve | |
| CN104863706A (en) | Cylinder-driving two-stroke engine | |
| CN203685333U (en) | Air valve with thermal barrier coating layer | |
| CN106286042A (en) | A Novel section-variable and tumble flow gas handling system | |
| Jamrozik et al. | Modeling of thermal cycle CI engine with multi-stage fuel injection | |
| JP5978677B2 (en) | Compression self-ignition engine | |
| Neshan et al. | Thermo-fluid analysis of the exhaust manifold integrated with cylinder head | |
| CN101280733A (en) | Double-air-intake type intake duct | |
| CN204082333U (en) | Air-cooled pancake engine in a kind of engine driven supercharging formula | |
| CN104500260B (en) | Internal combustion engine shroud ring | |
| CN208486929U (en) | Water cooling noise reduction cooling, silencing device | |
| CN106438114A (en) | Multi-point port injection gas engine stratified combustion system | |
| CN102425508A (en) | Exhaust gas circulation (EGR) based hybrid charge system and method of gasoline engine | |
| CN204344218U (en) | The exhaust temperature control system of motor | |
| CN206972367U (en) | A kind of single cylinder diesel with radiating heating function | |
| CN102606281B (en) | A kind of supercharged engine and wherein cold suction tude | |
| CN203939540U (en) | Wear-resisting valve mechanism | |
| CN106438090A (en) | Low-emission motorcycle engine | |
| CN203394663U (en) | Improved structure of automobile engine | |
| CN202417746U (en) | Energy-saving and emission-reducing motor | |
| CN209324497U (en) | A kind of two stroke engine scavenging throttling set | |
| CN206338126U (en) | The automobile of five Stroke Engines with high expansion ratio | |
| CN203948183U (en) | A kind of natural gas engine special gas cylinder cap |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20211225 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |