CN105587422A - Cylinder sleeve - Google Patents
Cylinder sleeve Download PDFInfo
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- CN105587422A CN105587422A CN201510746665.1A CN201510746665A CN105587422A CN 105587422 A CN105587422 A CN 105587422A CN 201510746665 A CN201510746665 A CN 201510746665A CN 105587422 A CN105587422 A CN 105587422A
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- cylinder jacket
- concavity
- pore
- cylinder
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J10/00—Engine or like cylinders; Features of hollow, e.g. cylindrical, bodies in general
- F16J10/02—Cylinders designed to receive moving pistons or plungers
- F16J10/04—Running faces; Liners
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
- B22D13/02—Centrifugal casting; Casting by using centrifugal force of elongated solid or hollow bodies, e.g. pipes, in moulds rotating around their longitudinal axis
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/0009—Cylinders, pistons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
- B22D21/02—Casting exceedingly oxidisable non-ferrous metals, e.g. in inert atmosphere
- B22D21/04—Casting aluminium or magnesium
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention provides a cylinder sleeve, which is tightly attached to a cylinder body, and is used to reduce a size of an engine by reducing spacing between adjacent cylinder chambers of the cylinder bodies. The outer periphery (1a) of the cylinder sleeve is provided with a plurality of concave fine holes (3).
Description
Technical field
The present invention relates to cylinder jacket, be specifically related to by die casting castingin in the cylinder of cylinder blockCover.
Background technology
In the past, general by favourable aluminium alloy aspect production or performance, costThe cylinder block of engine for automobile is manufactured in die casting. Cylinder block possesses the cylinder that piston slidesThorax, the inner face of cylinder chamber is divided by the cylinder jacket being made of cast iron cylindraceous. This cylinderCover be generally in the time of die casting cylinder block simultaneously castingin in this cylinder block. For this cylinder jacketConventionally require performance as follows.
(1) require the being adjacent to property between cylinder block and cylinder jacket. Its reason be for make byThe wall temperature that is placed in high temperature lower cylinder cover in burning gases is stable. Therefore, need to be in runningShi Naizhi running through later not produce local gap between cylinder block and cylinder jacketMode is adjacent to.
(2) require cylinder block and the cylinder jacket thermal diffusivity to the combustion heat. Therefore, need realityThe increase of existing cylinder jacket and cylinder block contact area.
(3), in order to reduce mechanical loss and blow-by gas, require often to prevent the change of cylinder chamberShape. Therefore, require to realize that residual stress in cylinder jacket reduces and by cylinder block integratedlyKeep the so-called high mechanical anchorage property of cylinder jacket.
In order to meet this requirement, for example, in the technology of recording at following patent documentation 1,Propose the being adjacent to property in order to improve cylinder block and cylinder jacket and established at the outer peripheral face of cylinder jacketPut convex projection. In addition, in order to improve the mechanical anchor of contact-making surface of cylinder block and cylinder jacketPerformance has proposed to add by cutting on the outer peripheral face in cylinder jacket in following patent documentation 2Work and succeeding vat is set, and form 2 undercuts (undercut) portion at slot cross-section.
Prior art document
Patent documentation
Patent documentation 1: JP 2009-243386
Patent documentation 2: JP 2010-59909
Summary of the invention
The problem that invention will solve
But there are the following problems in above-mentioned patent documentation 1,2.
That is, in the technology of patent documentation 1, in the cylinder chamber adjacent one another are of cylinder blockThe convex projection of the outer peripheral face of cylinder jacket becomes relative state mutually. Therefore, to casting gasThe fillibility when position of cylinder barrel is filled as the raw-material aluminium alloy of cylinder block is bad, byThis, the intensity between cylinder chamber is irregular, is difficult for guaranteeing the intensity between cylinder chamber. In addition,Need to be used for the thin perforation that cooling water is passed through in the processing of the position of casting cylinder barrel, thereforeCannot make the spacing between cylinder chamber too short. That is, even if will shorten the spacing between cylinder chamber,Also cannot shorten fully above-mentioned spacing according to the outstanding amount of convex projection, therefore be difficult for realizingThe Downsizing of engine. And, cast cylinder block in the cylinder jacket that adopts the documentSituation under, can only, by using the centre spinning of rotary die cast, cannot adoptBe used in the existing greensand mold (=sand mo(u)ld) casting that productivity ratio or quality of materials aspect have superiorityMethod is disadvantageous on manufacturing.
In the technology of patent documentation 2, keep with respect to gas by the point of a knife that makes cutting elementThe state of cylinder sleeve radial skew and rotary body is engraved to vestige, back and forth divides a word with a hyphen at the end of a line cutting elementProcessing method is come to form succeeding vat and undercut portion at the outer peripheral face of cylinder jacket. Now, at 1 grooveIn cross section, form 2 undercut portions.
But according to the technology of the document, (angle is r) little and the utmost point to the diameter of instrument point of a knifeVery thin shape, there is wearing and tearing in advance or the breach of point of a knife in worry therefore. Therefore likely contractingThe life-span of shorter tools, and shape to instrument or the maintenance management of size likely become tiredDifficult. In addition, according to the technology of the document, because the outer peripheral face enforcement machinery to cylinder jacket addsWork, thus be more prone to wet sand casting compared with the centre spinning of this outer peripheral face hardening,Raw material have restriction to casting method. And, for to this outer peripheral face machining accuratelySucceeding vat, even if require the processed height that is mechanically clamped the degree that also can not be out of shape of cylinder jacketRigidity, is therefore difficult for realizing the thin-walled property of cylinder jacket. Even by cylinder jacket castingin in cylinderAfter body, by processing, cylinder jacket is realized in the situation of thin-walled property, the manufacturing procedure of cylinder jacketIncrease and also can cause yield rate to reduce or processing charges increase.
The present invention completes in view of above-mentioned actual conditions, and its object is to provide and cylinderThe being adjacent to property of body is good and can be by between the cylinder chamber adjacent one another are of shortening cylinder blockSpacing dwindle the cylinder jacket of the size of engine.
For the scheme of dealing with problems
In order to achieve the above object, cylinder jacket of the present invention is following to form, in cylinder jacketOuter peripheral face is formed with multiple concavity pores.
And, in a mode of cylinder jacket, be following formation, above-mentioned multiple concavity poresThere is respectively undercut portion, above-mentioned undercut portion be positioned at above-mentioned multiple concavity pores longitudinal section andThan the outer peripheral face of above-mentioned cylinder jacket in the inner part.
And, in a mode of cylinder jacket, be following formation, above-mentioned multiple concavity poresThere is respectively undercut portion, above-mentioned undercut portion be positioned at above-mentioned multiple concavity pores longitudinal section andThan the outer peripheral face of above-mentioned cylinder jacket in the outer part.
And, in a mode of cylinder jacket, be following to form, above-mentioned undercut portion has manyIndividual, preferably there are 3 places above and 6 sentence down.
And, in a mode of cylinder jacket, be following formation, above-mentioned multiple concavity poresAperture φ be 0.5～3mm, preferably φ is 1～3mm, the degree of depth is 0.5～2.0mm.
And, in a mode of cylinder jacket, be following formation, above-mentioned multiple concavity poresAt every 1cm2More than being 1 and below 400, preferably more than 1 and below 100.
And, in a mode of cylinder jacket, be following formation, above-mentioned multiple concavity poresForm multiple molten baths and make these at the outer peripheral face of above-mentioned cylinder jacket by illuminating laser beamWeld pool solidifies forms.
And, in a mode of cylinder jacket, be following formation, above-mentioned laser beam passes through manyInferior irradiation laser forms 1 above-mentioned concavity pore, and irradiates in order, makesIt is adjacent with previous molten bath that molten bath is formed as, and above-mentioned multiple concavity pores are by theseMolten bath forms.
And, in a mode of cylinder jacket, be following formation, above-mentioned laser beam is to irradiateNumber of times is the laser of 3 times, and the initial laser beam irradiating forms the 1st molten bath, then, and by shiningPenetrate laser beam for the second time and form 2nd molten bath adjacent with above-mentioned the 1st molten bath, then, by shiningPenetrate that laser beam is for the third time connected with the 2nd molten bath beam center separately in above-mentioned the 1st molten bathDeparting from position and melting with the 1st molten bath or the 2nd molten bath adjacent formation the 3rd on straight linePond, forms above-mentioned multiple above-mentioned concavity pore by above-mentioned the 1st molten bath, molten bath～3rd.
And, in a mode of cylinder jacket, be following formation, above-mentioned laser beam is by lightThe wavelength that spot diameter narrows down to 50～600 μ m is the thin footpath laser beam of 1.06 μ m, is output as1～5kw is 10～100msec to the irradiation time of every 1 above-mentioned concavity pore.
Invention effect
Cylinder jacket of the present invention is to be formed with multiple concavity pores at the outer peripheral face of cylinder jacketForm, therefore can maintain with the being adjacent to property of cylinder block and also can make to be equipped with by this concavity poreHypotelorism between the cylinder chamber adjacent one another are of cylinder jacket does not have at cylinder jacket outer peripheral faceThe amount of convex projection. Therefore, can dwindle the size of engine.
In addition, in the multiple concavity pores that are formed at cylinder jacket outer peripheral face, be provided with undercut portion,Therefore when during in cylinder block, making the being adjacent to property of cylinder jacket and cylinder block good cylinder jacket castinginGood. In addition, can realize and make the contact area of cylinder jacket outer peripheral face and cylinder block recessed by being formed withThe amount of shape pore increases. Therefore, can make the combustion heat of cylinder jacket be discharged into efficiently cylinder barrel.And the concavity pore by cylinder jacket and undercut portion obtain cylinder block with respect to cylinder jacketHigh mechanical anchorage property, therefore can resist by with intensification and the cooling cylinder together in when runningPoor the causing of linear expansion coefficient of cylinder (raw material are aluminium alloys) and cylinder jacket (raw material are cast iron)Distortional stress and maintain the out of roundness of cylinder chamber. Therefore, can reduce mechanical loss, blowbyGas, can also contribute to improve fuel efficiency.
Brief description of the drawings
Fig. 1 is the stereogram that represents an embodiment of cylinder jacket of the present invention.
Fig. 2 is that the part that the circle being represented by arrow B in Fig. 1 is surrounded is amplified rear bowing of representingView.
Fig. 3 is illustrated in the laser beam adopting in an embodiment of cylinder jacket of the present inventionThe figure of irradiation timing.
Fig. 4 represents what irradiating for the 1st time of irradiation timing by the laser beam shown in Fig. 3 formedConcavity pore, (a) is top view, is (b) sectional view.
Fig. 5 represents what irradiating for the 2nd time of irradiation timing by the laser beam shown in Fig. 3 formedConcavity pore, (a) is top view, is (b) sectional view.
Fig. 6 represents what irradiating for the 3rd time of irradiation timing by the laser beam shown in Fig. 3 formedConcavity pore, (a) is top view, is (b) sectional view.
Fig. 7 is at length illustrated in an embodiment of cylinder jacket of the present invention to adoptThe sectional view of the concavity pore forming by illuminating laser beam, (a) is illustrated in 3 places and is formed withThe situation of undercut portion, (b) is illustrated in 4 places and is formed with the situation of undercut portion, (c) is illustrated in 6Place is formed with the situation of undercut portion.
Fig. 8 is that to represent that the irradiation of the irradiation timing by the laser beam shown in Fig. 3 forms recessedThe photo of shape pore, (a) is top view, is (b) the A-A line sectional view of (a).
Fig. 9 (a)～(f) is an enforcement that is illustrated respectively in cylinder jacket of the present inventionThe sectional view of the concavity pore forming in mode.
Description of reference numerals
1 cylinder jacket
1a outer peripheral face
2 (2a, 2b, 2c) molten bath
3 concavity pores
4 (4a, 4b, 4c) beam center
5a, 5b, 5c sputter thing
6 undercut portions
Detailed description of the invention
Below, explain the reality of cylinder jacket of the present invention on one side on one side with reference to Fig. 1～Fig. 9Execute mode.
The cylinder jacket 1 of present embodiment is the cylinder sleeve being made of cast iron cylindraceous, makes on one sideThis cylinder jacket is rotated and divides a word with a hyphen at the end of a line by suitable timing, on one side by not shown laser beam irradiationTo the outer peripheral face 1a of cylinder jacket 1 and form multiple molten baths 2 at this outer peripheral face, make these molten baths 2Solidify and form multiple concavity pores 3 (seeing figures.1.and.2) at the outer peripheral face 1a of cylinder jacket 1.As shown in Figure 1, multiple concavity pores 3 as gridiron pattern arrange and form.
The laser that present embodiment adopts is optical-fiber laser, as shown in Figure 3, is for shapeBecome 1 concavity pore 3 and by so-called 3 laser of certain pulsed exposure 3 times. This laserOutput be 5kW, the time of irradiating 1 time is 5msec, irradiate interval be 8msec.
Fig. 4～Fig. 6 represents to form concavity pore 3 by 3 laser beam irradiations shown in Fig. 3Situation.
Fig. 4 represents to form by initial laser beam irradiation the situation of the 1st molten bath 2a. At this figure(a) and (b), 4a represents that the place of the 1st laser beam irradiation is (hereinafter referred to as light beamCenter. ), 5a represents the sputter thing dispersing by initial laser beam irradiation, arrow representsThe direction of dispersing of sputter thing 5a.
Fig. 5 represents to irradiate the 2nd laser beam and form with the 1st molten to the side of the 1st molten bath 2aThe situation of local the 2nd overlapping and continuous molten bath 2b of pond 2a. In this figure (a), 4b representsThe beam center of the 2nd laser beam irradiation, 5b represents to disperse by the 2nd laser beam irradiationSputter thing, arrow represents the direction of dispersing of sputter thing 5b. This figure (b) represents light beamThe cross section of the line X-X ' that center 4a, 4b connect.
In this figure (b), the part of being surrounded by broken circle is the both sides, cross section of the 2nd molten bath 2bAfter partial melting, can flow and the so-called undercut portion 6 of solidifying to the direction of arrow. According to this figure(b) left figure, the cross section two side portions of the 2nd molten bath 2b is because surface tension and gravity are answeredFormer, consequently, the set retardation of the 1st molten bath 2a, on the other hand, the 2nd molten bath 2b solidifiesAnd formation undercut portion 6.
The irradiation that Fig. 6 is illustrated in Fig. 5 swashs for the 3rd time by the side irradiation to the 1st molten bath 2a afterwardsLight beam and form the situation of the 3rd molten bath 2c. The 3rd laser beam irradiation is to the 1st molten bath 2aSide and from the line X-X ' of Fig. 5 (a) (by the 1st and the 2nd molten bath 2a, in the light beam of 2bThe line that heart 4a, 4b connect) position of departing to side irradiates. In the figure, 4c representsThe 3rd beam center, 5c represents the sputter thing dispersing by the irradiation of the 3rd laser beam,Arrow represents the direction of dispersing of sputter thing 5c. In Fig. 6 (b), the portion being surrounded by broken circlePoint be can be due to surface tension after the cross section two side portions fusing of the 2nd and the 3rd molten bath 2b, 2cAnd the undercut portion 6 of solidifying in the process of restoring.
Fig. 7 at length represents the various concavity pores 3 that form by present embodiment, (a) tableBe shown in the concavity pore 3 that 3 places that surrounded by broken circle are formed with undercut portion 6, (b) be illustrated in4 places that surrounded by broken circle are formed with the concavity pore 3 of undercut portion 6, (c) are illustrated in by void6 places that line circle surrounds are formed with the concavity pore 3 of undercut portion 6. As shown in this figure (c),Undercut portion 6 is from the outer peripheral face 1a of cylinder jacket 1 outwards outstanding situation, preferably its overhang CBelow 0.2mm. In the present embodiment, although most preferably above with at least 3 places,6 numbers under sentencing form undercut portion 6, but are not particularly limited.
At this, the concrete shape and size of concavity pore 3 are described. The shape of concavity pore 3With size be, aperture φ is 0.5～3mm, and preferably φ is 1～3mm, the degree of depth is 0.5～2.0mm. Be adjacent to intensity according to the aluminium of cylinder jacket 1 and the formation material as cylinder block 1Calculate the quantity of the concavity pore 3 of the outer peripheral face 1a that is formed at actual cylinder jacket 1, be made as every1cm2Be 1 above to below 400, preferably 1 above to 100 (=φ is 1mm,Be spaced apart 1mm) below, this is realizing the aluminium alloy and the gas that improve as the base material of cylinder blockBeing adjacent to property between cylinder sleeve 1 and prevent that in the distortion of cylinder chamber be preferred.
In addition, the degree of depth of concavity pore 3 is below 2.0mm, suppresses thus due to from laserInput heat and cause locating to produce cast iron grain at the base material (cast iron) of the periphery of concavity pore 3,And can not quench and make its formation of martensite the base material of cylinder jacket 1 (cast iron), because ofThis can not bring impact to the sliding properties of the inner peripheral surface of cylinder jacket 1 or machinability, is manufacturingOn be favourable. By the spot diameter that irradiates optical-fiber laser is reduced into 50～600 μ m'sWavelength be the thin footpath laser beam of 1.06 μ m according to the output of 1～5kw to every 1 concavity pore 3Irradiate the time of 10～100msec and form above-mentioned shrinkage pool pore 3. Particularly above-mentioned have stingThe track that the shaping of the concavity pore 3 of limit portion 6 need to be moved speculum be set as L font orCircular motion.
According to said method, as shown in Fig. 4～Fig. 6, can make tiny area by Ear Mucosa Treated by He Ne Laser IrradiationThereby rapid melting obtains molten bath 2. Cause the generation of sputter thing, the part in molten bath 2 simultaneouslyDrop spills into the periphery in this molten bath, and the drop overflowing is swashing due to surface tension and gravityAfter finishing, irradiation declines along liquid level. The droplet solidification in molten bath 2 in this process and formingUndercut portion 6. In order to carry out pulse irradiation, speculum is moved by L word or circuit orbit, byThis produces the residual or jog of fusing in the interior region that occurs that energy density is low of shrinkage pool pore 3,Around them, also form multiple undercut portion 6 according to the principle identical with already described content. ForBe applied to the outer peripheral face 1a of actual cylinder jacket 1, if with the balance of speculum move withThe rotary speed of cylinder jacket cylinder is adjusted on step ground, can be in large area interval on demand andQuantity forms already described concavity pore 3 with the short time.
Fig. 8 represents with the concavity pore after multimode optical fibre laser processing as other embodiment3 outward appearance and the photo in cross section, (a) be top view, is (b) that the A-A line of (a) cutsFace figure. Processing conditions in this figure is as follows.
Use equipment: optical-fiber laser (YLS-5000 is produced by Ipg Photonics Corp.)
Cooling water cooler: ORIONRKE2200B-V
Reflection lens (mirrorhead): 3020HT (being produced by Mitsubishi Electric)
Optical maser wavelength: 1064nm
The thermal source diameter of laser: 600 μ m
Laser output: 5kW (in the situation that of multimode) or 2kW (single mode)
Irradiation time 5msec/ light beam
Number of repetition: 3 times/hole
Interpulse period: 8msec
Speculum translational speed: 500mm/sec
Speculum motion track: L word divide a word with a hyphen at the end of a line (longitudinal and transverse respectively for 1mm)
According to this photo, the size of known concavity pore 3 is about vertical 2.6mm, horizontal 2.4mmIn scope, the degree of depth is 1.2mm, obtains 4 undercut portions of place 6.
The outer peripheral face 1a of the cylinder jacket 1 of Fig. 9 (a)～(f) be illustrated in present embodiment formsThe example of various cross sectional shapes of concavity pore 3. This figure (a) is illustrated in cross section for roughlyThe bottom, cross section of leg-of-mutton concavity pore 3 is formed with so-called single undercut of undercut portion 6. ShouldFigure (b) represents to be formed with from cross section the both sides, top, cross section of the concavity pore 3 that is essentially rectangularOutstanding and towards single undercut of the so-called U-shaped projection of horizontal undercut portion 6 upward. ShouldFigure (c) represents to be formed with from cross section the top, cross section of the concavity pore 3 that is roughly delBoth sides are outstanding and singly stinging towards the so-called V-type projection of horizontal undercut portion 6 upwardLimit. This figure (d) represents so-called pair of undercut, is the concavity pore 3 of essentially rectangular in cross sectionTwo bottom sides be formed with undercut portion 6, and be formed with to laterally projecting stinging at central portionLimit portion 6. This figure (e) represents two undercuts of so-called projection, is general triangular in cross sectionThe cross section bottom of concavity pore 3 be formed with undercut portion 6, and be formed with from top, cross sectionBoth sides are outstanding and towards horizontal undercut portion 6 upward. This figure (f) represents so-called protrudingThree undercuts that rise are bottom, cross section and the end thereof of the concavity pore 3 of general triangular in cross sectionCentral authorities of portion are formed with respectively undercut portion 6, and are formed with prominent upward from both sides, top, cross sectionGo out and towards horizontal undercut portion 6.
According to the cylinder jacket 1 of present embodiment, by this cylinder jacket by aluminium die casting at a high speed,Under high pressure in the situation of castingin in cylinder block, also can be interior reliable at already described concavity pore 3Ground filling aluminum, makes cylinder jacket 1 and (cylinder barrel side) by the undercut portion 6 in this concavity poreAluminium obtains height and is adjacent to intensity. Thus, when when running or running be not through later can be at aluminium alloyBetween raw material and cylinder jacket, produce local gap, can make the wall temperature of cylinder jacket 1 stable.
In addition, in the present embodiment, at castingin in cylinder block in the situation that, can be by cylinderIt is mutually prominent that spacing between thorax is dwindled the outer peripheral face 1a not existing from cylinder jacket adjacent one another are 1The amount of the convex projection going out, can dwindle engine by the shortening of the spacing between cylinder chamberSize.
In addition, can use and aspect productivity ratio or quality of materials, there is the existing wet of superiorityTherefore sand mold (=sand mold) casting aerogenesis in next life cylinder sleeve 1 is favourable on manufacturing.In the time that the outer peripheral face 1a of cylinder jacket 1 forms concavity pore 3, without clamp this as existingCylinder jacket is carried out machining, and therefore it neither be necessary for the rigidity clamping, thereby,Can carry out to cylinder jacket 1 processing of concavity pore 3 the thin-walled in the situation that. And, do not useFor the cutting element of existing cylinder jacket 1, therefore also without the life-span of instrument or the dimension of instrumentPillar reason.
And, in the present embodiment, do not make convex projection be formed at cylinder jacket 1 outsideSide face 1a, therefore also can be by the centre spinning setting of the outer peripheral face 1a hardening of cylinder jacket 1Concavity pore 3, thus the cylinder jacket 1 of present embodiment also can be manufactured by centre spinning,Can eliminate the restriction of casting method.
And, in the present embodiment, be provided with multiple concavities at the outer peripheral face 1a of cylinder jacket 1Pore 3, can increase the raw-material contact area of aluminium of this outer peripheral face and cylinder block thus, because ofThis can improve cylinder block and the thermal diffusivity of cylinder jacket to the combustion heat.
And, in the present embodiment, form concavity pore 3 at the outer peripheral face 1a of cylinder jacket 1Time, in this cylinder jacket, do not produce residual stress, therefore in the time of engine operation, be difficult for occurringThe distortion of cylinder chamber. Therefore, can stably maintain the out of roundness of cylinder chamber, therefore, can be realThe minimizing of existing mechanical loss, blow-by gas, can realize the raising of the fuel efficiency of engine.
In addition in the above-described embodiment, adopt 3 times in order to form 1 concavity pore 3,Laser, but the invention is not restricted to 3 times, can be also to shine in order to form 1 concavity pore 3Penetrate 2 times or 4 above repeatedly laser.
In addition, in the above-described embodiment, the periphery by laser beam irradiation in cylinder jacket 1Face 1a forms the recess of concavity pore, but the invention is not restricted to this, as long as can be in cylinder jacket1 outer peripheral face 1a point-like ground forms the method for multiple recesses, for example, can be also to pass throughThe method that other machinings such as steel bores, the collision of metal ball form.
More than describe embodiments of the present invention, but the invention is not restricted to already described enforcement sideFormula, can carry out various distortion and change based on technological thought of the present invention.
Claims (13)
1. a cylinder jacket, is characterized in that,
Be formed with multiple concavity pores at the outer peripheral face of cylinder jacket.
2. cylinder jacket according to claim 1, is characterized in that,
Above-mentioned multiple concavity pore has respectively undercut portion, and above-mentioned undercut portion is positioned at above-mentioned multipleIn the longitudinal section of concavity pore and than the outer peripheral face of above-mentioned cylinder jacket in the inner part.
3. cylinder jacket according to claim 2, is characterized in that,
Above-mentioned multiple concavity pore has respectively undercut portion, and above-mentioned undercut portion is positioned at above-mentioned multipleIn the longitudinal section of concavity pore and than the outer peripheral face of above-mentioned cylinder jacket in the outer part.
4. according to the cylinder jacket described in claim 2 or 3, it is characterized in that,
Above-mentioned undercut portion has multiple.
5. according to the cylinder jacket described in claim 2 or 3, it is characterized in that,
Above-mentioned undercut portion has 3 places above 6 and sentences down.
6. cylinder jacket according to claim 1, is characterized in that,
The aperture (φ) of above-mentioned multiple concavity pores is 0.5～3mm, the degree of depth is 0.5～2.0mm。
7. cylinder jacket according to claim 1, is characterized in that,
The aperture (φ) of above-mentioned multiple concavity pores is 1～3mm, and the degree of depth is 0.5～2.0mm.
8. according to the cylinder jacket described in claim 1 or 7, it is characterized in that,
Above-mentioned multiple concavity pore is at every 1cm2Be 1 above below 400.
9. according to the cylinder jacket described in claim 1 or 7, it is characterized in that,
Above-mentioned multiple concavity pore is at every 1cm2Be 1 above below 100.
10. according to the cylinder jacket described in any one in claim 1 to 9, it is characterized in that,
Above-mentioned multiple concavity pore is the outer peripheral face in above-mentioned cylinder jacket by illuminating laser beamForm multiple molten baths and these weld pool solidifies are formed.
11. cylinder jacket according to claim 10, is characterized in that,
Above-mentioned laser beam forms 1 above-mentioned concavity pore by repeatedly irradiating laser, and pressesIrradiate according to order, a molten bath is formed as adjacent with previous molten bath, above-mentioned manyIndividual concavity pore forms by these molten baths.
12. cylinder jacket according to claim 9, is characterized in that,
Above-mentioned laser beam is that irradiation number of times is the laser of 3 times, and the initial laser beam irradiating formsThe 1st molten bath, then, forms adjacent with above-mentioned the 1st molten bath by irradiating laser beam for the second timeThe 2nd molten bath, then, by irradiating for the third time laser beam in above-mentioned the 1st molten bath and the 2nd molten bathOn the straight line that beam center separately connects depart from position and with the 1st molten bath or the2 molten baths adjacents form the 3rd molten bath, by above-mentioned the 1st molten bath, molten bath～3rd form multiple onState concavity pore.
13. according to claim 10 to the cylinder jacket described in any one in 12, and its feature existsIn,
Above-mentioned laser beam is that the wavelength that spot diameter is narrowed down to 50～600 μ m is 1.06 μ mThin footpath laser beam, be output as 1～5kw, to the irradiation time of every 1 above-mentioned concavity poreBe 10～100msec.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014226158A JP2016089744A (en) | 2014-11-06 | 2014-11-06 | Cylinder sleeve |
| JP2014-226158 | 2014-11-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105587422A true CN105587422A (en) | 2016-05-18 |
| CN105587422B CN105587422B (en) | 2018-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510746665.1A Expired - Fee Related CN105587422B (en) | 2014-11-06 | 2015-11-05 | Cylinder jacket |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2016089744A (en) |
| CN (1) | CN105587422B (en) |
| DE (1) | DE102015119024B4 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840488A (en) * | 2016-05-19 | 2016-08-10 | 江苏凌特精密机械销售有限公司 | Novel aluminium alloy cylinder jacket |
| CN109595091A (en) * | 2017-10-03 | 2019-04-09 | 铃木株式会社 | Castingin component and its manufacturing method |
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| JP6451370B2 (en) * | 2015-02-09 | 2019-01-16 | オムロン株式会社 | Manufacturing method of bonded structure |
| DE102017214732A1 (en) * | 2017-08-23 | 2019-02-28 | Bayerische Motoren Werke Aktiengesellschaft | Method for designing a component or material composite |
| CN114850451B (en) * | 2022-05-24 | 2024-04-16 | 中国第一汽车股份有限公司 | Manufacturing method of cast aluminum engine, cast aluminum engine and cast iron cylinder sleeve |
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| JP2009243386A (en) * | 2008-03-31 | 2009-10-22 | Toyota Motor Corp | Cylinder liner and cylinder block |
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| CN105840488A (en) * | 2016-05-19 | 2016-08-10 | 江苏凌特精密机械销售有限公司 | Novel aluminium alloy cylinder jacket |
| CN109595091A (en) * | 2017-10-03 | 2019-04-09 | 铃木株式会社 | Castingin component and its manufacturing method |
| CN109595091B (en) * | 2017-10-03 | 2021-05-25 | 铃木株式会社 | Insert casting member and method for manufacturing same |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102015119024B4 (en) | 2021-02-04 |
| DE102015119024A1 (en) | 2016-05-12 |
| CN105587422B (en) | 2018-04-06 |
| JP2016089744A (en) | 2016-05-23 |
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