WO2015029661A1 - エンジンおよびそれを備えたエンジン作業機 - Google Patents
エンジンおよびそれを備えたエンジン作業機 Download PDFInfo
- Publication number
- WO2015029661A1 WO2015029661A1 PCT/JP2014/069711 JP2014069711W WO2015029661A1 WO 2015029661 A1 WO2015029661 A1 WO 2015029661A1 JP 2014069711 W JP2014069711 W JP 2014069711W WO 2015029661 A1 WO2015029661 A1 WO 2015029661A1
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- WIPO (PCT)
- Prior art keywords
- cylinder
- engine
- plating film
- nickel plating
- magnesium alloy
- Prior art date
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Classifications
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- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/1601—Process or apparatus
- C23C18/1633—Process of electroless plating
- C23C18/1646—Characteristics of the product obtained
- C23C18/165—Multilayered product
- C23C18/1651—Two or more layers only obtained by electroless plating
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- 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
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0085—Materials for constructing engines or their parts
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- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/31—Coating with metals
- C23C18/32—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron
- C23C18/34—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron using reducing agents
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- 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
- C23C28/02—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 only coatings only including layers of metallic material
- C23C28/023—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 only coatings only including layers of metallic material only coatings of metal elements only
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- 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
- F02F1/00—Cylinders; Cylinder heads
- F02F1/004—Cylinder liners
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- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/1601—Process or apparatus
- C23C18/1633—Process of electroless plating
- C23C18/1689—After-treatment
- C23C18/1692—Heat-treatment
-
- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/31—Coating with metals
- C23C18/32—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron
- C23C18/34—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron using reducing agents
- C23C18/36—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron using reducing agents using hypophosphites
-
- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/31—Coating with metals
- C23C18/38—Coating with copper
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/02—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for hand-held tools
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- 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
- F02F1/00—Cylinders; Cylinder heads
- F02F1/18—Other cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/02—Light metals
- F05C2201/028—Magnesium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2253/00—Other material characteristics; Treatment of material
- F05C2253/12—Coating
Definitions
- the present invention relates to a hand-held engine working machine such as a chain saw or a brush cutter in which a working tool is driven by an engine.
- Examples of portable engine working machines in which a work tool is driven by an engine include a chain saw, a brush cutter, and a blower.
- the chain saw is used for cutting a work object such as wood using a saw chain, which is a chain-shaped saw blade, as a work tool.
- the brush cutter is provided with a cutting blade as a working tool at the tip of an operating rod, and is mainly used for mowing.
- the blower includes a fan as a work tool, and is used to blow down leaves on the road surface or dust by blowing. *
- a cylinder made of a magnesium alloy is vulnerable to oxidation, and its strength decreases when the temperature reaches 200 to 300 ° C. Therefore, using a magnesium alloy for an engine cylinder used as a power source for an engine working machine There is a problem that the durability and wear resistance of the engine cannot be obtained sufficiently.
- Patent Document 1 discloses an engine block in which a magnesium alloy is partially used as a material of a cylinder.
- This engine block has a cylinder block body made of a magnesium alloy and a cylinder liner made of aluminum alloy, cast iron or the like, and the cylinder liner is cast into the cylinder block body.
- an electrical insulating layer is interposed between the cylinder liner and the cylinder block body in order to prevent the occurrence of electrolytic corrosion due to contact between the cylinder cast iron and the magnesium alloy.
- An object of the present invention is to provide an engine working machine having a cylinder made of a magnesium alloy excellent in weight reduction while maintaining the durability of the engine.
- the engine of the present invention is an engine having a cylinder in which a piston is incorporated in a cylinder bore, the cylinder is made of a magnesium alloy, and the cylinder bore, or the whole or a part of the cylinder including the cylinder bore and the outer surface of the cylinder, A nickel plating film or a copper plating film was formed.
- the engine working machine has an engine and a work tool driven by the engine.
- the cylinder is made of a magnesium alloy that is lighter than an aluminum alloy, it is possible to easily reduce the weight of the engine working machine including the cylinder.
- the strength decreased when the cylinder temperature reached 200 to 300 ° C.
- the cylinder strength was increased and the durability of the cylinder increased. Can be improved. If the cylinder bore is provided with a nickel plating film as the first layer and the surface thereof is provided with a chromium plating film, the wear resistance of the cylinder bore can also be improved.
- a chain saw 10 as an engine working machine has a working machine body 11.
- a guide bar 12 is attached to the distal end portion of the work machine body 11, and a saw chain 13 is hung around the guide bar 12.
- the work machine body 11 is provided with an engine (not shown) as a power source and a sprocket that is driven to rotate by the crankshaft of the engine.
- the saw chain 13 hung on the guide bar 12 is also hung on the sprocket. That is, the saw chain 13 is wound around the sprocket and the guide bar 12, and when the sprocket is driven to rotate, the saw chain 13 rotates along the outer peripheral portion of the guide bar 12. The operator can cut or cut the object by pressing the rotating saw chain 13 against the object such as a tree.
- FIG. 2 is a cross-sectional view showing a part of the engine 14 incorporated in the chain saw 10 as an engine working machine.
- the engine 14 has a crankcase on which a crankshaft (not shown) is rotatably mounted, and a cylinder 16 in which a piston 15 is incorporated so as to be linearly reciprocable.
- the engine body is formed by the crankcase and the cylinder 16.
- the piston 15 is connected to the crankshaft by a connecting rod (not shown), and the reciprocating motion of the piston 15 is converted into the rotational motion of the crankshaft.
- the engine 14 is a two-cycle air-cooled engine, and the cylinder 16 is provided with a plurality of heat radiation fins 21 protruding outward.
- a carburetor is attached to the cylinder 16 via an insulator provided with a flow path that communicates with the intake port. The insulator prevents the heat of the cylinder 16 from being transmitted to the carburetor. Insulators and vaporizers are not shown.
- the carburetor is supplied with external air purified by the filter element and fuel from a fuel tank (not shown), and an air-fuel mixture is generated by the carburetor, and the air-fuel mixture is supplied into the engine body from the intake port. The supplied air-fuel mixture is ignited by the spark plug 22.
- a muffler is attached to the cylinder 16 so as to communicate with the exhaust port.
- FIG. 3 is an enlarged cross-sectional view showing a portion A of FIG. 2
- FIG. 4 is an enlarged cross-sectional view showing a portion B of FIG. *
- the cylinder 16 is provided with a cylinder bore 23, and the piston 15 is incorporated in the cylinder bore 23.
- a plurality of heat radiating fins 21 project outward and are provided on the cylinder 16.
- the cylinder 16 is manufactured by casting using a magnesium alloy as a raw material. In the cylinder 16 cast from the magnesium alloy, the cylinder bore 23 is machined to a predetermined inner diameter by machining.
- the crankcase in which the crankshaft is rotatably supported is also made of a magnesium alloy like the cylinder 16.
- the specific gravity of the magnesium alloy is about 2/3 of the specific gravity of the aluminum alloy, and the weight of the cylinder 16 can be reduced as compared with the case where the cylinder 16 is manufactured from the aluminum alloy. Thereby, weight reduction of the chain saw 10 can be achieved. If the crankcase is also made of a magnesium alloy, it is possible to reduce the weight of the engine 14 including the cylinder 16 and the crankcase. *
- a nickel plating film is applied to the entire cylinder 16 including the inner surface of the cylinder 16 including the cylinder bore 23 and the outer surface of the cylinder 16 provided with the radiation fins 21 by nickel plating.
- FIG. 3 shows the nickel plating film 31 applied to the cylinder bore 23
- FIG. 4 shows the nickel plating film 41 applied to the surface of the radiation fin 21. 3 and 4, the thicknesses of the nickel plating films 31 and 41 are exaggerated.
- the nickel plating films 31 and 41 are applied by electroless nickel plating.
- This plating is different from electroplating, and is a treatment method in which a metal nickel film is deposited on the cylinder 16 by impregnating the liquid with electrons released by oxidation of the reducing agent contained in the plating solution, not with electrons caused by energization. It is.
- the thickness of the nickel plating films 31 and 41 is 10 to 20 ⁇ m. If the thickness of the nickel plating film is set within this range, the strength of the cylinder 16 can be increased without impairing the heat dissipation of the cylinder 16.
- a nickel plating film is applied to the entire cylinder 16 made of a magnesium alloy, not only can the strength of the cylinder 16 be increased, but also the oxidation of the magnesium alloy can be prevented, and the corrosion resistance and wear resistance of the cylinder 16 can be improved.
- the temperature of the cylinder 16 is increased to 200 to 300 ° C., the coating by electroless nickel plating can be baked to increase the strength of the coating.
- the composition of the nickel plating films 31 and 41 is 90 to 92% for nickel Ni and 8 to 10% for phosphorus P. *
- the temperature of the cylinder 16 becomes 200 to 300 ° C. by the combustion gas, and the nickel plating films 31 and 41 are automatically baked.
- 70% of the predetermined baking hardness is achieved in the combustion profile.
- the remaining 30% can be cured by subsequent engine operation.
- the cylinder 16 may be subjected to a baking process by heat treatment.
- pretreatment films 32 and 42 made of copper plating are applied to the cylinder 16 in advance.
- the adhesion between the nickel plating films 31 and 41 and the cylinder 16 can be enhanced.
- a copper plating film is applied to the entire cylinder 16 instead of the nickel plating film. May be.
- the thickness of the copper plating film is 10 to 20 ⁇ m, similar to the nickel plating films 31 and 41. If the thickness of the copper plating film is set within this range, the strength of the cylinder 16 can be increased without impairing the heat dissipation of the cylinder 16.
- the chrome plating film 33 when the chrome plating film 33 is laminated as the second layer on the surface of the nickel plating film 31 applied to the cylinder 16 as the first layer, the chrome plating film 33 can be applied to the surface of the cylinder bore 23.
- the inner peripheral surface of the cylinder bore 23 becomes a chrome plating film.
- the durability and wear resistance of the cylinder 16 made of a magnesium alloy can be improved, and the cylinder 16 made of a magnesium alloy can be put into practical use.
- As an inner surface of the cylinder 16 there are a cylinder top portion to which the spark plug 22 is attached and an inner surface of a cylinder opening portion on the opposite side to the cylinder bore 23 on which the piston ring 15a slides. These inner surfaces may also be provided with a chrome plating film 33. When the entire inner surface is applied with a chrome plating film at the same time, the processing efficiency can be increased. *
- an iron plating film or a nickel plating film may be used instead of the chrome plating film 33 described above. Can be increased.
- a nickel plating film 31 and a chrome plating film 33 are laminated in layers on the inner surface of the cylinder bore 23 as shown in FIG.
- a nickel plating film 41 is applied to the outer surface of the cylinder 16, and a chrome plating film 33 is not applied.
- a two-layer plating film may be applied to the entire cylinder 16, that is, the entire inner surface and outer surface.
- the second layer film may be any one of a chromium plating film, an iron plating film, and a nickel film as described above.
- the crankcase is also made of a magnesium alloy.
- a nickel plating film or a copper plating film By applying a nickel plating film or a copper plating film to the entire surface of the crankcase, it is possible to prevent the crankcase from being oxidized and to improve the corrosion resistance and wear resistance of the crankcase. Can do. *
- the specific gravity of the magnesium alloy is about 2/3 of the specific gravity of the aluminum alloy. If the cylinder 16 is made of a magnesium alloy instead of the aluminum alloy, the cylinder 16 can be reduced in weight and engine operation can be performed. The weight of the machine can be easily achieved. When the cylinder temperature during engine operation is 200 to 300 ° C., the magnesium alloy inevitably suffers from a decrease in cylinder strength, wear of the cylinder bore 23, and oxidative corrosion. On the other hand, when the nickel plating film or the copper plating film is applied to the cylinder bore 23 or the entire cylinder, the strength of the cylinder 16 can be increased and the durability of the cylinder 16 can be improved.
- the wear resistance can be improved. Therefore, if the nickel plating film 31 and the chrome plating film 33 are applied to the cylinder bore 23, the wear resistance of the cylinder bore 23 with which the piston ring 15a is in sliding contact can be improved.
- An engine work machine such as the chain saw 10 may stop the engine 14 to temporarily interrupt the work on the work target, and then restart the engine 14 to continue the work.
- the engine 14 is stopped, the cylinder 16 becomes hot, and the high heat is transmitted to the carburetor through the insulator. For this reason, if the air-fuel mixture remaining in the insulator or the carburetor is vaporized when the engine is stopped and the interruption time until the engine is restarted is short, the engine restart may not be performed smoothly.
- the cylinder 16 when the cylinder 16 is manufactured from a magnesium alloy, the temperature of the cylinder 16 is radiated and cooled in a short time even if a long time has not elapsed since the engine was stopped.
- the engine 14 can be restarted smoothly without passing a long time from when the engine is stopped to when it is restarted. Can do. *
- FIG. 1 and FIG. 2 show a chain saw 10 as an engine working machine.
- a brush cutter or the like can be used as long as it is a portable type that is carried by an operator.
- the present invention can also be applied to other engine working machines.
- the illustrated engine 14 is an air-cooled two-cycle engine, the present invention can be applied to a cylinder of a four-cycle engine.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Chemically Coating (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Description
Claims (7)
- シリンダボアにピストンが組み込まれるシリンダを有するエンジンであって、前記シリンダはマグネシウム合金からなり、前記シリンダボア、または前記シリンダボアと前記シリンダの外面とを含めたシリンダ全体または一部に、ニッケルメッキ皮膜、または銅メッキ皮膜を形成した、エンジン。
- 前記ニッケルメッキ皮膜は、無電解ニッケルメッキにより形成するようにした、請求項1記載のエンジン。
- 前記ニッケルメッキ皮膜、前記銅メッキ皮膜の厚さは、10~20μmである、請求項1または2記載のエンジン。
- 前記シリンダボアに形成されたニッケルメッキ皮膜を第1層とし、クロムメッキ皮膜、鉄メッキ皮膜、ニジカルメッキ皮膜のいずれかを、第2層として前記第1層の表面に積層形成した、請求項1~3のいずれか1項に記載のエンジン。
- 前記第1層のニッケルメッキ皮膜を前記シリンダボアに施す前に、前記シリンダボアに0.5~20μmの銅メッキからなる前処理皮膜を形成するようにした、請求項4記載のエンジン。
- シリンダ全体または一部に形成されたニッケルメッキ皮膜を第1層とし、クロムメッキ皮膜、鉄メッキ皮膜、ニジカルメッキ皮膜のいずれかを、第2層として前記第1層の表面に積層形成した、請求項1~3のいずれか1項に記載のエンジン。
- 請求項1~6のいずれか1項に記載のエンジンと、当該エンジンにより駆動される作業具を備えた、エンジン作業機。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015534093A JP6103065B2 (ja) | 2013-08-30 | 2014-07-25 | エンジンおよびそれを備えたエンジン作業機 |
CN201480045095.7A CN105492748A (zh) | 2013-08-30 | 2014-07-25 | 发动机以及具备该发动机的发动机作业机 |
EP14840177.1A EP3040546A4 (en) | 2013-08-30 | 2014-07-25 | Engine and engine work machine provided with same |
US14/912,335 US20160201598A1 (en) | 2013-08-30 | 2014-07-25 | Engine and engine operating machine having the engine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013180552 | 2013-08-30 | ||
JP2013-180552 | 2013-08-30 |
Publications (1)
Publication Number | Publication Date |
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WO2015029661A1 true WO2015029661A1 (ja) | 2015-03-05 |
Family
ID=52586235
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2014/069711 WO2015029661A1 (ja) | 2013-08-30 | 2014-07-25 | エンジンおよびそれを備えたエンジン作業機 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20160201598A1 (ja) |
EP (1) | EP3040546A4 (ja) |
JP (1) | JP6103065B2 (ja) |
CN (1) | CN105492748A (ja) |
WO (1) | WO2015029661A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017068846A1 (ja) * | 2015-10-23 | 2017-04-27 | 株式会社ブリヂストン | ゴム物品用モールドの製造方法、ゴム物品用モールド、モールド部材の製造方法、及び、モールド部材 |
JP2021119300A (ja) * | 2020-01-30 | 2021-08-12 | 工機ホールディングス株式会社 | 気体圧縮機 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109184939A (zh) * | 2018-09-26 | 2019-01-11 | 中国人民解放军总参谋部第六十研究所 | 一种镁合金曲轴箱体与轴瓦配合结构 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH04263037A (ja) * | 1990-09-22 | 1992-09-18 | Metallges Ag | エンジンおよび乗り物用の構造部材 |
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- 2014-07-25 JP JP2015534093A patent/JP6103065B2/ja not_active Expired - Fee Related
- 2014-07-25 WO PCT/JP2014/069711 patent/WO2015029661A1/ja active Application Filing
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WO2017068846A1 (ja) * | 2015-10-23 | 2017-04-27 | 株式会社ブリヂストン | ゴム物品用モールドの製造方法、ゴム物品用モールド、モールド部材の製造方法、及び、モールド部材 |
JPWO2017068846A1 (ja) * | 2015-10-23 | 2018-08-09 | 株式会社ブリヂストン | ゴム物品用モールドの製造方法、ゴム物品用モールド、モールド部材の製造方法、及び、モールド部材 |
JP2021119300A (ja) * | 2020-01-30 | 2021-08-12 | 工機ホールディングス株式会社 | 気体圧縮機 |
JP7434945B2 (ja) | 2020-01-30 | 2024-02-21 | 工機ホールディングス株式会社 | 気体圧縮機 |
Also Published As
Publication number | Publication date |
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US20160201598A1 (en) | 2016-07-14 |
EP3040546A1 (en) | 2016-07-06 |
JP6103065B2 (ja) | 2017-03-29 |
EP3040546A4 (en) | 2017-11-22 |
JPWO2015029661A1 (ja) | 2017-03-02 |
CN105492748A (zh) | 2016-04-13 |
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