CN106194483A - A kind of insulating piston - Google Patents

A kind of insulating piston Download PDF

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Publication number
CN106194483A
CN106194483A CN201610539558.6A CN201610539558A CN106194483A CN 106194483 A CN106194483 A CN 106194483A CN 201610539558 A CN201610539558 A CN 201610539558A CN 106194483 A CN106194483 A CN 106194483A
Authority
CN
China
Prior art keywords
piston
foam metal
metal layer
matrix
insulating
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.)
Pending
Application number
CN201610539558.6A
Other languages
Chinese (zh)
Inventor
李勤
李明
李继超
冯月雪
陈秀明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weichai Power Co Ltd
Original Assignee
Weichai Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Weichai Power Co Ltd filed Critical Weichai Power Co Ltd
Priority to CN201610539558.6A priority Critical patent/CN106194483A/en
Publication of CN106194483A publication Critical patent/CN106194483A/en
Pending legal-status Critical Current

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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
    • F02F3/12—Pistons  having surface coverings on piston heads
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
    • C23C28/321—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer with at least one metal alloy layer
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C6/00—Coating by casting molten material on the substrate
    • 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
    • F02F3/12—Pistons  having surface coverings on piston heads
    • F02F3/14—Pistons  having surface coverings on piston heads within combustion chambers
    • 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 
    • F02F3/26—Pistons  having combustion chamber in piston head
    • 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
    • F02F2200/00—Manufacturing
    • F02F2200/06—Casting

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

The present invention relates to technical field of internal combustion engines, particularly relate to a kind of insulating piston, including piston matrix, the top of described piston matrix is provided with on the groove for forming combustor, the end face of described piston matrix and the surface of described groove and is equipped with foam metal layer.The insulating piston that the present invention provides, at the end face of piston matrix and it is equipped with foam metal layer on the surface of the groove forming combustor, on the one hand, owing to the specific heat capacity of foam metal layer is relatively low, the heat that foam metal layer can be saved during pistons work is few, and the heat therefore absorbed from combustor is few；On the other hand, owing to the heat conductivity of foam metal layer is relatively low, the speed that therefore heat transmits to piston matrix from combustor is slow, thus significantly reduces the heat loss of combustor.

Description

A kind of insulating piston
Technical field
The present invention relates to technical field of internal combustion engines, particularly relate to a kind of insulating piston.
Background technology
Along with the upgrading of engine emission regulation, the temperature of the combustor of engine piston, pressure requirements are more and more higher, special Not being the gas engine with natural gas, liquefied gas as fuel, the thermic load of piston is higher.The high specific heat capacity of piston, high heat conduction Coefficient causes in combustor heat convection at top and combustor notable, causes combustion chamber heat to lose higher, effective output Relatively low.
There is the technology of multiple change piston heat conductivity at present.By piston entirety change material or design at piston face Insulating layer material etc..Such as, using Integral ceramic piston, the piston of internal combustion engine, cylinder jacket, cylinder head bottom surface all use pottery Make, form the combustor that heat conductivity is the lowest；Top cast setting thermal insulation ceramics lid at piston；Or the end face at piston sprays It is coated with zirconium oxide, alumina ceramic layer, but the service life of coating is shorter, directly affects the service life of piston.Existing change The technology of kind piston heat conductivity still reaches to less than preferable effect.
Summary of the invention
(1) to solve the technical problem that
The technical problem to be solved in the present invention is to solve piston effect of heat insulation difference in prior art to cause internal combustion engine heat loss High problem.
(2) technical scheme
In order to solve above-mentioned technical problem, the invention provides a kind of insulating piston, including piston matrix, described piston base The top of body is provided with on the groove for forming combustor, the end face of described piston matrix and the surface of described groove and is equipped with Foam metal layer.
According to the present invention, the upper surface of described foam metal layer is additionally provided with sealant.
According to the present invention, described sealant uses silicon dioxide, carborundum, polysilazane, aluminium oxide, zirconium oxide, carbonization One or more in silicon or aluminium nitride are made.
According to the present invention, the thickness of described sealant is 0.1～0.5mm.
According to the present invention, described foam metal layer uses closed pore formula foam metal to make.
According to the present invention, the gas in described closed pore formula foam metal is hydrogen.
According to the present invention, described piston matrix and described foam metal layer all use alusil alloy to make.
According to the present invention, the porosity 35%～60% of described foam metal layer.
According to the present invention, the thickness of described foam metal layer is 0.5～10mm.
Present invention also offers the preparation method of a kind of above-mentioned insulating piston, comprise the steps:
S1 a, it is provided that top sets reeded piston matrix；
S2, uses the mode of casting to form foam metal layer at the top of described piston matrix.
(3) beneficial effect
The technique scheme of the present invention compared with prior art has the advantage that the insulating piston that the present invention provides, At the end face of piston matrix and it is equipped with foam metal layer on the surface of the groove forming combustor, on the one hand, due to The specific heat capacity of foam metal layer is relatively low, and the heat that foam metal layer can be saved during pistons work is few, therefore from burning The heat absorbed in room is few；On the other hand, owing to the heat conductivity of foam metal layer is relatively low, therefore heat from combustor to piston The speed of matrix transmission is slow, thus significantly reduces the heat loss of combustor.
Accompanying drawing explanation
Fig. 1 is the structural representation of the insulating piston that the embodiment of the present invention provides.
In figure: 1: piston matrix；2: end face；3: groove；4: foam metal layer；5: sealant.
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.
As it is shown in figure 1, a kind of insulating piston that the embodiment of the present invention provides, including piston matrix 1, the top of piston matrix 1 Portion is provided with the groove 3 for forming combustor, and the present embodiment further groove 3 is preferably " ω " type, the end face 2 of piston matrix 1 and Foam metal layer 4 it is equipped with on the surface of groove 3.Foam metal material hole there are the air dielectric of low thermal conductivity, Its heat conductivity with the increase of porosity and exponentially downward trend, the heat conductivity of general metal or alloy be 10W～ 300W/ (m K), and 0.1～0.01 times that performance heat conductivity is metal or alloy of foam metal.The present invention provide every Hot piston is at the end face 2 of piston matrix 1 and is equipped with foam metal layer 4 on the surface of the groove 3 forming combustor, and one Aspect, owing to the specific heat capacity of foam metal layer 4 is relatively low, the heat that foam metal layer 4 can be saved during pistons work is few, Therefore the heat absorbed from combustor is few；On the other hand, owing to the heat conductivity of foam metal layer 4 is relatively low, therefore heat from The speed that combustor transmits to piston matrix 1 is slow, thus significantly reduces the heat loss of combustor.Especially end face 2 is with recessed The transition junction of groove 3 i.e. piston throat location high-temp combustion gaseous mixture convection current easily causes strong heat exchange, and the present invention implements The relatively low heat exchange significantly reduced at piston aditus laryngis of foam metal layer heat conductivity arranged in example, thus be effectively reduced Heat loss at piston aditus laryngis.
Further, in the present embodiment, the upper surface of foam metal layer 4 is additionally provided with sealant 5.Due to foam metal layer 4 Porosity is higher, and at high temperature foam metal layer 4 there may be danger crackle occur when bearing bigger thermic load and thermal shock Danger, therefore, the upper surface at foam metal layer 4 arranges sealant 5, on the one hand can stop the combustion product carbon in combustor The pollutant such as cigarette, ash, organic component, sulfate and metal-oxide enter in foam metal layer 4, and then effectively prevent burning The structure of product breakdown foam metal layer 4；On the other hand improve the impact resistance of piston face, the sealant 5 of setting is right Foam metal layer 4 plays the effect of protection, improves the service life of piston.
Further, the sealant 5 in the present embodiment can use silicon dioxide, carborundum, polysilazane, aluminium oxide, One or more in zirconium oxide, carborundum or aluminium nitride are made.Preferably, sealant 5 can use the side of plasma spraying Formula is formed.In the present embodiment, the thickness of sealant 5 is preferably 0.1～0.5mm, and the porosity of sealant 5 is preferably 1%～2%. The material of sealant 5 is preferably silicon dioxide, and the heat conductivity of sealant 5 is 7.6W/ (m K), and relatively low heat conductivity can have Effect ground reduces the strong heat exchange that high-temp combustion mixed airflow causes, thus reduces the heat loss of piston.
Further, the foam metal layer 4 in the present embodiment uses closed pore formula foam metal to make.Closed pore formula foam metal Hole in exist Measurement of Gas Thermal Conductivity low, the heat conductivity of foam metal layer 4 entirety can be reduced.Preferably, this enforcement The gas in closed pore formula foam metal in example is hydrogen, and the heat conductivity of hydrogen is only 0.01～0.04W/ (m K), it is possible to The heat conductivity of foam metal layer 4 is greatly reduced.
Further, the piston matrix 1 in the present embodiment and foam metal layer 4 all use alusil alloy to make.Foam gold The material belonging to layer 4 keeps consistent with the material of piston matrix 1, under engine cycle thermic load effect, and the gold of foam metal layer 4 Belong to framework material and the similar thermal expansion coefficient of piston matrix 1 material, improve dimensional stability, and foam metal layer 4 with The bond strength of piston matrix 1 is high, can meet the reliability requirement under engine cycle thermal shock conditions.Wherein, foam gold Belong to Si content in the alusil alloy of layer 4 and be preferably 6.5%～13%, it is ensured that the impact resistance that foam metal layer 4 is certain.
Further, the porosity 35%～60% of the foam metal layer 4 in the present embodiment, the diameter of hole is preferably 0.005mm～0.10mm.Namely in closed pore formula foam metal, the cumulative volume of hydrogen accounts for whole foam metal layer 4 in the present embodiment 35%～60%, hydrogen, as good thermal resistance medium, can play heat-blocking action well.The thickness of foam metal layer 4 is excellent Elect 0.5～10mm as, while ensureing that foam metal layer 4 has good effect of heat insulation, the bubble of relatively small thickness is set as far as possible Foam metal level 4 is cost-effective.
Present invention also offers the preparation method of a kind of above-mentioned insulating piston, comprise the steps:
S1 a, it is provided that top is provided with the piston matrix 1 of groove 3；Specifically, in the present embodiment, first casting obtains the conjunction of aluminum silicon The piston blank of gold, then carries out mechanical coarsening, corundum Shot Blasting by the end face 2 of piston and the inner surface of groove 3, obtains There is coarse piston-top surface 2 and the piston matrix 1 of groove 3 inner surface.The surface of piston matrix 1 is roughened, is conducive to Foam metal layer 4 and the combination of piston matrix 1, improve bond strength between the two.
S2, uses the mode of casting to form foam metal layer 4 at the top of piston matrix 1.Specifically, first in the present embodiment First alusil alloy is carried out melting, in alusil alloy solution, add foaming agent TiH2 foam, then by the aluminum after foaming Silicon alloy injects in the model at piston matrix 1 top, obtains, after cooled, solidification, the foam that combines with piston matrix 1 Metal level 4, foam metal layer 4 uses enclosed foam metal to make, and is hydrogen in hole.
Further, the embodiment of the present invention is additionally included in foam metal layer 4 surface and uses the method formation of plasma spraying Sealant 5.The sealing that the method using plasma spraying can obtain with foam metal layer 4 is well combined and porosity is relatively low Layer 5.
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 (10)

1. an insulating piston, it is characterised in that: include that piston matrix, the top of described piston matrix are provided with for forming burning It is equipped with foam metal layer on the groove of room, the end face of described piston matrix and the surface of described groove.
Insulating piston the most according to claim 1, it is characterised in that: the upper surface of described foam metal layer is additionally provided with sealing Layer.
Insulating piston the most according to claim 2, it is characterised in that: described sealant uses silicon dioxide, carborundum, gathers One or more in silazane, aluminium oxide, zirconium oxide, carborundum or aluminium nitride are made.
Insulating piston the most according to claim 2, it is characterised in that: the thickness of described sealant is 0.1～0.5mm.
Insulating piston the most according to claim 1, it is characterised in that: described foam metal layer uses closed pore formula foam metal Make.
Insulating piston the most according to claim 5, it is characterised in that: the gas in described closed pore formula foam metal is hydrogen Gas.
Insulating piston the most according to claim 6, it is characterised in that: the porosity 35% of described foam metal layer～ 60%.
Insulating piston the most according to claim 1, it is characterised in that: described piston matrix and described foam metal layer are all adopted Make with alusil alloy.
Insulating piston the most according to claim 1, it is characterised in that: the thickness of described foam metal layer is 0.5～10mm.
10. the preparation method of the insulating piston as described in claim 1-9 any one, it is characterised in that include as follows Step:
S1 a, it is provided that top sets reeded piston matrix；
S2, uses the mode of casting to form foam metal layer at the top of described piston matrix.
CN201610539558.6A 2016-07-11 2016-07-11 A kind of insulating piston Pending CN106194483A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610539558.6A CN106194483A (en) 2016-07-11 2016-07-11 A kind of insulating piston

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Application Number Priority Date Filing Date Title
CN201610539558.6A CN106194483A (en) 2016-07-11 2016-07-11 A kind of insulating piston

Publications (1)

Publication Number Publication Date
CN106194483A true CN106194483A (en) 2016-12-07

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107630764A (en) * 2017-08-10 2018-01-26 中国北方发动机研究所(天津) A kind of NEW TYPE OF COMPOSITE heat insulation structural piston
CN108952992A (en) * 2018-07-18 2018-12-07 刘艳阳 For improving the device of internal combustion engine thermal efficiency
CN109915277A (en) * 2019-03-15 2019-06-21 滨州东海龙活塞有限公司 A kind of insulating piston and its processing method
CN110820027A (en) * 2019-11-28 2020-02-21 潍柴动力股份有限公司 Piston and piston manufacturing method
CN112739899A (en) * 2018-09-21 2021-04-30 曼卡车和巴士欧洲股份公司 Piston for an internal combustion engine
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
CN113882963A (en) * 2020-07-03 2022-01-04 马勒国际有限公司 Piston for an internal combustion engine and internal combustion engine

Citations (6)

* Cited by examiner, † Cited by third party
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
CN102926886A (en) * 2011-08-10 2013-02-13 中国兵器工业第五二研究所 Steel crown aluminum piston and manufacturing method thereof
CN104131324A (en) * 2014-08-12 2014-11-05 广西玉柴机器股份有限公司 Aluminum alloy piston for internal combustion engine
CN204572181U (en) * 2012-08-10 2015-08-19 爱信精机株式会社 Motor and piston

Patent Citations (6)

* Cited by examiner, † Cited by third party
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
CN102926886A (en) * 2011-08-10 2013-02-13 中国兵器工业第五二研究所 Steel crown aluminum piston and manufacturing method thereof
CN204572181U (en) * 2012-08-10 2015-08-19 爱信精机株式会社 Motor and piston
CN104131324A (en) * 2014-08-12 2014-11-05 广西玉柴机器股份有限公司 Aluminum alloy piston for internal combustion engine

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107630764A (en) * 2017-08-10 2018-01-26 中国北方发动机研究所(天津) A kind of NEW TYPE OF COMPOSITE heat insulation structural piston
CN108952992A (en) * 2018-07-18 2018-12-07 刘艳阳 For improving the device of internal combustion engine thermal efficiency
CN112739899A (en) * 2018-09-21 2021-04-30 曼卡车和巴士欧洲股份公司 Piston for an internal combustion engine
US11719186B2 (en) 2018-09-21 2023-08-08 Man Truck & Bus Se Piston for an internal combustion engine
CN109915277A (en) * 2019-03-15 2019-06-21 滨州东海龙活塞有限公司 A kind of insulating piston and its processing method
CN110820027A (en) * 2019-11-28 2020-02-21 潍柴动力股份有限公司 Piston and piston manufacturing method
CN113882963A (en) * 2020-07-03 2022-01-04 马勒国际有限公司 Piston for an internal combustion engine and internal combustion engine
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: 20161207