CN106150748A - A kind of heat insulating coat - Google Patents
A kind of heat insulating coat Download PDFInfo
- Publication number
- CN106150748A CN106150748A CN201610754294.6A CN201610754294A CN106150748A CN 106150748 A CN106150748 A CN 106150748A CN 201610754294 A CN201610754294 A CN 201610754294A CN 106150748 A CN106150748 A CN 106150748A
- Authority
- CN
- China
- Prior art keywords
- heat
- insulation layer
- internal combustion
- combustion engine
- insulating coat
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/10—Pistons having surface coverings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2202/00—Metallic substrate
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The present invention relates to technical field of heat transfer, particularly relate to a kind of heat insulating coat, including thermal insulation layer and heat insulation layer, heat insulation layer one side is connected with the inner surface of piston combustion bowl, another side coats described thermal insulation layer, heat insulation layer includes foam metal skeleton and implant, and implant is filled in the hole of foam metal skeleton.The present invention arranges the loose structure of the foam metal skeletal internal utilizing heat insulation layer, the fixing implant with low heat conduction low heat capacity feature in hole, make the followability that heat insulating coat is fabulous to environment, overcome the negative effect to scavenging period of the general heat-barrier material continuous high temperature surface, Coated Surface Temperature needed for realizing the internal combustion engine of intermittence work can adapt to rapidly the heat insulating coat of environmental change, reduce internal combustion engine and cool down the heat taken away, reduce the thermal loss in combustor, improve the thermal efficiency of internal combustion engine, it is ensured that the air inflow of internal combustion engine and power output；Heat insulation layer utilizes foam metal skeleton, reduces the thermic load of high-temperature component, improves the life-span of internal combustion engine.
Description
Technical field
The present invention relates to technical field of heat transfer, particularly relate to a kind of heat insulating coat.
Background technology
Interior internal combustion engine is a kind of heating power internal combustion engine, and it utilizes the heat energy that fuel is sent at gas in-cylinder combustion, with gas
As medium (abbreviation working medium), it is mechanical energy by thermal energy.Existing internal combustion cylinder of internal-combustion engine combustor is all with cast iron as medium
Make, so, the interface heat transfer amount contacted with high-temperature gas big (heat conductivity of cast iron is 54 kilocalories/meter. hour. degree), cold
But heat waste value is high.Delivery temperature is up to 700 ° of K, is another big approach of heat consumption, at compression ratio 1:8 (gasoline internal combustion internal combustion
Machine), in the case of 1:20 (diesel internal combustion internal combustion engine), the high-temperature gas of expansion stroke fails to fill part and expands and cause the thermal efficiency
Low.Additionally, piston side-friction force heat consumption also occupies certain proportion, and piston parts are easily made to cause damage.Internal combustion internal combustion
The reactive loss of machine predominantly cools down loss of heat, aerofluxus heat consumption and piston side-friction force heat waste these three, and its summation reaches full dose
55～65%.Therefore, the overall thermal efficiency the most about 30～40% of existing interior internal combustion engine.
In prior art, by piston body by welding layer with ceramic bonding together with, novel structure, simple, utilize ceramic
The features such as the fusing point of material is high, high temperature resistant, wear-resistant, corrosion-resistant, thermal insulation is good, improve the thermal efficiency and the power of internal combustion engine,
Saving fuel oil, reduces tail gas pollution, improves piston service life.Or by combustor and other contact high-temperature gas interface coating or
Inlay resistant to elevated temperatures pottery or alloy thermal insulation layer, the raising of piston compression ratio to 1:20 (intake stroke) and 1:30～50 (acting
Stroke), bent axle is offset to cylinder centerline 3,4 quadrant side, is further provided with regulating the manual mechanism of oil supply angle.Due to greatly
Amplitude reduction heat transfer loss, exhaust heat loss, the loss of piston side-friction force, and the optimum condition of fuel combustion is provided,
The overall thermal efficiency of this interior internal combustion engine can improve to 50～60%, thus has saved fuel energy, and can use pluralities of fuel
Oil.
But aforesaid way all can cause some to affect the problem of power of IC engine, as at piston combustion bowl wall or combustor
Surface-coated pottery or alloy thermal insulation layer, owing to the heat conductivity of pottery or metal is bigger, absorb heat more, piston face
And combustion chamber wall surface is always maintained at higher temperature in whole work process.In scavenging period, the pottery meeting heat release of high temperature,
Heating the fresh air entering cylinder, the fresh air total amount sucked in causing cylinder declines, and then causes internal combustion engine
Power drop.
Summary of the invention
(1) to solve the technical problem that
The technical problem to be solved in the present invention is to solve existing heat insulating coat to make piston combustion bowl the warmest
Spend height, scavenging period is produced harmful effect, and then causes the problem that power of IC engine declines.
(2) technical scheme
In order to solve above-mentioned technical problem, the invention provides a kind of heat insulating coat, including thermal insulation layer and heat insulation layer, described
Heat insulation layer one side is connected with the inner surface of piston combustion bowl, and another side coats described thermal insulation layer, and described heat insulation layer includes foam gold
Belonging to skeleton and implant, described implant is filled in the hole of described foam metal skeleton.
Wherein, described implant is vacuum, air or noble gas.
Wherein, the material of described thermal insulation layer is pottery.
Wherein, the material of described foam metal skeleton be aperture 2～3mm, porosity be through hole type Cu of 70～95%.
Wherein, the inner surface of described piston combustion bowl includes piston combustion bowl wall, piston upper surface and cylinder cap lower surface.
(3) beneficial effect
The technique scheme of the present invention has the advantage that heat insulating coat of the present invention is arranged on the interior table of piston combustion bowl
Face, utilizes the loose structure of the foam metal skeletal internal of heat insulation layer, and fixing in hole have filling out of low heat conduction low heat capacity feature
Fill thing, and the resting state of implant can be ensured so that the followability that heat insulating coat is fabulous to environment, overcome general heat-barrier material
The continuous high temperature surface negative effect to scavenging period, it is achieved the Coated Surface Temperature needed for the internal combustion engine of intermittence work is permissible
Adapt to rapidly the heat insulating coat of environmental change；When partial heat is transferred to heat insulation layer by thermal insulation layer, heat insulation layer can retain heat
Amount, it is ensured that the heat in combustor will not outwards be derived and spread, and is more further completely cut off in combustor by heat, reduces
Internal combustion engine cools down the heat taken away, and reduces the thermal loss in combustor, improves the thermal efficiency of internal combustion engine, ensures internal combustion simultaneously
The air inflow of machine and power output；Heat insulation layer utilizes foam metal skeleton, reduces the thermic load of high-temperature component, improves internal combustion
The life-span of machine, thermal insulation layer surface and internal combustion engine component surface also simultaneously work as sealing the effect of the hole of foam metal skeleton, every
Thermosphere also acts as protection heat insulation layer not by high temperature impact.
It is very fast that the present invention can make the internal surface temperature of combustor reduce, and reduces the inlet air heating of scavenging period, makes air inlet
More abundant, burning is more preferably, it is possible to promotes power of IC engine and the delivery temperature of internal combustion engine, can improve internal combustion engine after-treatment system
Working condition, reduce the heat that consumed of after-treatment system heat management, waste heat recovery simultaneously can be reclaimed more energy, be had
It is beneficial to the Appropriate application of energy.
Except the technical characteristic of technical scheme that described above present invention solves the technical problem that, constitute and there is this
Outside the advantage that the technical characteristic of a little technical schemes is brought, the other technologies feature of the present invention and these technical characteristics bring
Advantage, will further illustrate in conjunction with accompanying drawing.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment of the present invention heat insulating coat.
In figure: 1: thermal insulation layer；2: heat insulation layer；3: the inner surface of piston combustion bowl；21: foam metal skeleton；210: hole.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained on the premise of not making creative work, broadly falls into the scope of protection of the invention.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " is installed ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be fixing connection, it is also possible to be to removably connect, or be integrally connected；Can
To be mechanical connection, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, can understand that above-mentioned term is at this with concrete condition
Concrete meaning in invention.
Additionally, in describing the invention, except as otherwise noted, " multiple ", " many ", " many groups " be meant that two or
Two or more, " several ", " some ", " some groups " are meant that one or more.
As it is shown in figure 1, the heat insulating coat that the embodiment of the present invention provides, including thermal insulation layer 1 and heat insulation layer 2, heat insulation layer 2 one side
Being connected with the inner surface 3 of piston combustion bowl, heat insulation layer 2 another side coating thermal insulation layer 1, heat insulation layer 2 includes foam metal skeleton 21
And implant, implant is filled in the hole 210 of foam metal skeleton 21.
Heat insulating coat of the present invention is arranged on the inner surface of piston combustion bowl, utilizes the foam metal skeletal internal of heat insulation layer
Loose structure, the fixing implant with low heat conduction low heat capacity feature in hole, and the resting state of implant can be ensured so that
The followability that heat insulating coat is fabulous to environment, overcomes the negative effect to scavenging period of the general heat-barrier material continuous high temperature surface,
Coated Surface Temperature needed for realizing the internal combustion engine of intermittence work can adapt to rapidly the heat insulating coat of environmental change；When heat insulation
When partial heat is transferred to heat insulation layer by layer, heat insulation layer can retain heat, it is ensured that the heat in combustor will not outwards be derived
And diffusion, heat is more further completely cut off in combustor, reduces internal combustion engine and cool down the heat taken away, reduce combustor
Interior thermal loss, improves the thermal efficiency of internal combustion engine, ensures air inflow and the power output of internal combustion engine simultaneously；Heat insulation layer utilizes bubble
Foam metallic framework, reduces the thermic load of high-temperature component, improves the life-span of internal combustion engine, thermal insulation layer surface and internal combustion engine component table
Face also simultaneously works as sealing the effect of the hole of foam metal skeleton, and thermal insulation layer also acts as protection heat insulation layer not by high temperature impact.
It is very fast that the present invention can make the internal surface temperature of combustor reduce, and reduces the inlet air heating of scavenging period, makes air inlet
More abundant, burning is more preferably, it is possible to promotes power of IC engine and the delivery temperature of internal combustion engine, can improve internal combustion engine after-treatment system
Working condition, reduce the heat that consumed of after-treatment system heat management, waste heat recovery simultaneously can be reclaimed more energy, be had
It is beneficial to the Appropriate application of energy.
Wherein, implant is vacuum, air or noble gas.The implant of the heat insulation layer of the present invention is vacuum or static
Air and noble gas, utilize its low heat conduction low heat capacity feature, it is achieved the characteristic of the low heat conduction low heat capacity of whole heat insulating coat, make
Heat insulating coat can adapt to rapidly environmental change.
Wherein, the material of thermal insulation layer 1 is pottery.Wherein, the material of foam metal skeleton 21 is aperture 2～3mm, porosity
It it is through hole type Cu of 70～95%.The generating surface of foam metal skeleton coat one layer of ceramic material can protect foam metal from
The impact of superhigh temperature.In the present embodiment, foam metal skeleton selects through hole type Cu, and pore cross-section is polygon, and distribution of pores is equal
Even, be conducive to the performance of its low heat exchange of low heat conduction in piston combustion chamber internal surface stepless action.
Wherein, the inner surface 3 of piston combustion bowl includes piston combustion bowl wall, piston upper surface and cylinder cap lower surface.?
Piston combustion bowl wall, piston upper surface and cylinder cap bottom surface coating heat insulating coat, reduce internal combustion engine and cool down the heat taken away,
Improve the thermal efficiency of internal combustion engine, ensure air inflow and the power output of internal combustion engine simultaneously.
In sum, it is very fast that the present invention can make the internal surface temperature of combustor reduce, and the air inlet reducing scavenging period adds
Heat, makes air inlet more abundant, and burning is more preferably, it is possible to promotes power of IC engine and the delivery temperature of internal combustion engine, can improve internal combustion engine
The working condition of after-treatment system, reduces the heat that after-treatment system heat management is consumed, and waste heat recovery simultaneously can be reclaimed more
The Appropriate application of many energy, beneficially energy.
Last it is noted that above example is only in order to illustrate technical scheme, it is not intended to limit；Although
With reference to previous embodiment, the present invention is described in detail, it will be understood by those within the art that: it still may be used
So that the technical scheme described in foregoing embodiments to be modified, or wherein portion of techniques feature is carried out equivalent；
And these amendment or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (5)
1. a heat insulating coat, it is characterised in that: include thermal insulation layer and heat insulation layer, described heat insulation layer one side and piston combustion bowl
Inner surface connects, and another side coats described thermal insulation layer, and described heat insulation layer includes foam metal skeleton and implant, described implant
It is filled in the hole of described foam metal skeleton.
Heat insulating coat the most according to claim 1, it is characterised in that: described implant is vacuum, air or noble gas.
Heat insulating coat the most according to claim 1, it is characterised in that: the material of described thermal insulation layer is pottery.
Heat insulating coat the most according to claim 1, it is characterised in that: the material of described foam metal skeleton be aperture 2～
3mm, porosity are through hole type Cu of 70～95%.
5. according to the heat insulating coat described in claim 1-4 any one, it is characterised in that: the inner surface of described piston combustion bowl
Including piston combustion bowl wall, piston upper surface and cylinder cap lower surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610754294.6A CN106150748A (en) | 2016-08-29 | 2016-08-29 | A kind of heat insulating coat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610754294.6A CN106150748A (en) | 2016-08-29 | 2016-08-29 | A kind of heat insulating coat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106150748A true CN106150748A (en) | 2016-11-23 |
Family
ID=57344260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610754294.6A Pending CN106150748A (en) | 2016-08-29 | 2016-08-29 | A kind of heat insulating coat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106150748A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108149238A (en) * | 2017-12-27 | 2018-06-12 | 宁波远欣石化有限公司 | A kind of heat-insulated protective coating of metal material and preparation method thereof |
| CN111946512A (en) * | 2020-08-10 | 2020-11-17 | 一汽解放汽车有限公司 | Heat insulation sleeve, heat insulation sleeve manufacturing method and oil spraying mechanism |
| CN113294261A (en) * | 2021-06-29 | 2021-08-24 | 潍柴动力股份有限公司 | Cylinder cover, coating preparation device and coating preparation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2365942A (en) * | 1999-05-26 | 2002-02-27 | Thermotite As | Heat-insulated steel pipe for deep-sea pipelines and method for producing the same |
| JP2003267064A (en) * | 2002-03-15 | 2003-09-25 | Komatsu Ltd | Heat radiation structure for heat source |
| CN101994564A (en) * | 2009-08-17 | 2011-03-30 | 石殿来 | Secondary stress application combustion engine with thermal insulating layers capable of restraining loss of energy in cylinder |
| CN102257259A (en) * | 2008-12-19 | 2011-11-23 | 曼柴油机涡轮机欧洲股份公司曼柴油机涡轮机德国分公司 | Diesel engine, predetermined breaking point component therefor and method for preventing damage to a diesel engine |
| CN103867339A (en) * | 2012-12-14 | 2014-06-18 | 上海新力动力设备研究所 | Ablation-proof structure of solid rocket engine |
| CN204572181U (en) * | 2012-08-10 | 2015-08-19 | 爱信精机株式会社 | Motor and piston |
-
2016
- 2016-08-29 CN CN201610754294.6A patent/CN106150748A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2365942A (en) * | 1999-05-26 | 2002-02-27 | Thermotite As | Heat-insulated steel pipe for deep-sea pipelines and method for producing the same |
| JP2003267064A (en) * | 2002-03-15 | 2003-09-25 | Komatsu Ltd | Heat radiation structure for heat source |
| CN102257259A (en) * | 2008-12-19 | 2011-11-23 | 曼柴油机涡轮机欧洲股份公司曼柴油机涡轮机德国分公司 | Diesel engine, predetermined breaking point component therefor and method for preventing damage to a diesel engine |
| CN101994564A (en) * | 2009-08-17 | 2011-03-30 | 石殿来 | Secondary stress application combustion engine with thermal insulating layers capable of restraining loss of energy in cylinder |
| CN204572181U (en) * | 2012-08-10 | 2015-08-19 | 爱信精机株式会社 | Motor and piston |
| CN103867339A (en) * | 2012-12-14 | 2014-06-18 | 上海新力动力设备研究所 | Ablation-proof structure of solid rocket engine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108149238A (en) * | 2017-12-27 | 2018-06-12 | 宁波远欣石化有限公司 | A kind of heat-insulated protective coating of metal material and preparation method thereof |
| CN111946512A (en) * | 2020-08-10 | 2020-11-17 | 一汽解放汽车有限公司 | Heat insulation sleeve, heat insulation sleeve manufacturing method and oil spraying mechanism |
| CN111946512B (en) * | 2020-08-10 | 2021-09-17 | 一汽解放汽车有限公司 | Heat insulation sleeve, heat insulation sleeve manufacturing method and oil spraying mechanism |
| CN113294261A (en) * | 2021-06-29 | 2021-08-24 | 潍柴动力股份有限公司 | Cylinder cover, coating preparation device and coating preparation method |
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Application publication date: 20161123 |