CN106677917A - Engine piston capable of saving energy and prolonging service life - Google Patents
Engine piston capable of saving energy and prolonging service life Download PDFInfo
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- CN106677917A CN106677917A CN201710133929.5A CN201710133929A CN106677917A CN 106677917 A CN106677917 A CN 106677917A CN 201710133929 A CN201710133929 A CN 201710133929A CN 106677917 A CN106677917 A CN 106677917A
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- piston
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- vertical indent
- striped
- indent striped
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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
- F02F3/00—Pistons
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention relates to an engine piston, in particular to an engine piston capable of saving energy and prolonging service life based on lubrication improvement, wear resistance and service life prolonging functions. A skirt portion of the piston is divided into a main stress bearing area and a secondary stress bearing area. Parallel vertical indent stripes are evenly distributed on the outer surface of the skirt portion of the piston at equal intervals. The vertical indent stripes comprise first vertical indent stripes and second vertical indent stripes, the first vertical indent stripes are located in the secondary stress bearing area and are of an equally-wide equally-deep groove structure, the second vertical indent stripes are located in the main stress bearing area and are of an equally-wide unequally-deep groove structure, the depths of the second vertical indent stripes are linearly and progressively decreased from the upper portion to the lower portion of the skirt portion of the piston, the vertical indent stripes can store lubrication oil and abrasive dust, lubrication oil can be sufficiently supplied when the piston does reciprocating motion in a cylinder sleeve, distribution is uniform, friction heat is dispersed, the lubrication effect is improved, friction resistance is reduced, piston scraping and piston slap are prevented, and the service life of the piston and the service life of an air cylinder are prolonged.
Description
Technical field
The present invention relates to a kind of engine piston, more particularly to a kind of to be prolonged based on increasing profit, wear-resisting, prolonging life energy-conservation
The engine piston in longevity, can be applicable in various electromotors such as gasoline engine, diesel engine.
Background technology
Automobile be it is requisite in people's daily life ride instead of walk, traffic, means of transport.Subtract in nowadays global energy-conservation
Row, control under the overall background of haze anti-soil, the development and popularization of new-energy automobile become top priority, but the imperfection of its auxiliary facility with
And fancy price make its complete popularization remain a need for a period of time.Electromotor is the power source of automobile, is also automobile harmful exhaust
The main source of discharge.The multinomial researchs of Jing have shown that to have 10%~20% consumption in engine combustion energy in mechanical loss, and machinery is damaged
Disalignment has 45%~65% energy expenditure in the friction pair of piston, piston ring and cylinder, therefore engine research emphasis is more in drop
On low piston friction power, raising outer surface of piston anti-wear performance and raising piston anti-fatigue effect, such as Publication No.
The Chinese patent literature of " CN100516490C ", discloses a kind of fuel-economizing piston of internal combustion engine；Publication No. " CN 104763550
The Chinese patent literature of A ", discloses a kind of internal combustion engine of energy-conserving and environment-protective；In Publication No. " B of CN 103410626 "
State's patent documentation, discloses a kind of internal combustion engine with surface texture form.Through living to Jetta XL-2V automobile engines
The operating mode of plug is understood and finite element analyses, it is found that stress is the annular groove of top land the 3rd compared with the position concentrated, herein due to oil return
In addition its distance high-temperature top land is nearer for the design in hole, necessarily cause stress concentration in this, the concentrated stress at spill port
It is larger.The larger position of its secondary stress is top land, and high temperature, combustion gas high pressure will all cause top land stress to become big, piston
Top strain distribution is gradually reduced from center to surrounding.Piston skirt stress gradually increases from top to bottom, from centre to both sides elder generation
Reduction is further added by, and this is by split-up to annular groove, although skirt lower end is warm due to skirt upper end apart from the nearlyer stress of annular groove
Degree is minimum but herein wall thickness is relatively thin and without reinforcing rib design, and circumferential direction stress larger position in skirt section is maximum apart from full piston stress
Pin-and-hole recently so assume responsibility for bigger load, though the three kinds of plunger designs referred in prior art can be solved to a certain extent
Certainly above-mentioned technical problem, but be still weak in terms of ensureing to extend the piston fatigue life-span and in terms of fuel-economizing, it is contemplated that huge sends out
Motivation usage amount, even if the frictional dissipation of piston-cylinder liner system is reduced into very little amplitude, it is also possible to reducing energy resource consumption and changing
Kind environment produces considerable influence.It is simultaneously that the energy-saving, service life prolonged h type engine h piston of easy processing, low cost is general as new-energy automobile
And front transitional product, prospect is huge.
Therefore needing badly in the middle of prior art wants a kind of new technical scheme to solve this problem.
The content of the invention
It is an object of the invention to reduce electromotor during piston and cylinder sleeve acting because of the mechanical energy loss of friction generation
Lose, while extending the piston fatigue life-span, there is provided a kind of based on increasing profit, wear-resisting, prolonging life energy-saving, service life prolonged engine piston.
To reach above-mentioned technical purpose, the present invention proposes a kind of energy-saving, service life prolonged engine piston, including top land
And piston skirt, it is characterized in that：The piston skirt is divided into principal stress supporting region and secondary stress supporting region, in piston skirt appearance
Face is equidistantly evenly arranged the vertical indent striped being parallel to each other, and the vertical indent striped includes the first vertical indent striped
With the second vertical indent striped,
Wherein first vertical indent striped is located at secondary stress supporting region, and the first vertical indent striped waits deep recessed for wide
Bathtub construction, the rounded rectangle of channel section, rounded triangle or circular arc；
Wherein second vertical indent striped is located at principal stress supporting region, and the second vertical indent striped is wide groove type
Structure, the rounded rectangle of channel section, rounded triangle or circular arc, the depth of the second vertical indent striped is from piston skirt
Portion to bottom is linearly successively decreased change, linear relationship be Y=-X (H1-H0)/L3, X and Y be respectively in plane the abscissa of point and
Vertical coordinate, H1 is piston tip end face groove depth, and H1 is piston bottom end end face groove for 35%~40%, H0 of piston skirt thickness
Deep, piston bottom end end face groove depth is the length that 70%~80%, L3 of piston tip end face groove depth is the second vertical indent striped.
Further, the vertical indent fringe spacing of adjacent two row is the 2%~4% of piston skirt girth.
Further, the width of the described first vertical indent striped is the 0.3%~0.4% of piston skirt girth；Described
The width of two vertical indent stripeds is the 80% of the first vertical indent width of fringe.
Preferably, arrange in arbitrary neighborhood two and through hole, the through hole one are offered on the interfringe piston skirt of vertical indent
Between the vertical indent striped of two row, the spacing of the adjacent through-holes in each column through hole is piston skirt skirt length to row longitudinal arrangement
13%~15%, and the through-hole diameter being arranged in secondary stress supporting region be the first vertical indent width of fringe 70%~
80%, the through-hole diameter for being arranged in principal stress supporting region is the 70%~80% of the second vertical indent width of fringe.
Preferably, arrange in arbitrary neighborhood two and the 3rd vertical indent striped is provided between vertical indent striped, the 3rd is vertical interior
Recessed bar stricture of vagina is arranged parallel to vertical indent striped, and the vertical indent width of fringe of the 3rd be arranged in secondary stress supporting region is
The 60%~70% of first vertical indent width of fringe, depth be the vertical indent fringe depths in its both sides first 60%~
70%；The 3rd vertical indent width of fringe for being arranged in principal stress supporting region be the second vertical indent width of fringe 60%~
70%, it is 60%~70% that depth is the vertical indent fringe depths in its both sides second.
Further, the rounded rectangle in the described 3rd vertical indent striped section, rounded triangle or circular arc.
By above-mentioned design, the present invention can bring following beneficial effect：
The present invention is equidistantly evenly arranged the vertical indent striped being parallel to each other, vertical indent in piston skirt outer surface
Striped is that Trapezoidal and varying depth are designed, and upper stress less position in piston skirt is designed with the first deep vertical indent such as wide
Striped, the larger position of piston skirt upper stress is designed with the wide second vertical indent striped of varying depth shallow under depth.
The vertical indent striped internal memory that the present invention has found to be machined on high-speed motion piston by test and finite element analyses
There is the lubricating oil of low speeds flow, it is slower closer to bottom lubricating oil flow velocity in vertical indent striped, so as to erect in the case of rich oil
Shape indent striped memory storage lubricating oil, the lubricating oil of vertical indent striped memory storage is supplemented and is supplied to friction in the case of weary oil
Interface, improves lubricating condition.Scuffing of cylinder bore, the generation of detonation phenomenon are effectively prevented, the use longevity of piston and cylinder is extended
Life.
By way of the present invention is changing piston skirt configuration of surface, improve lubricating condition between piston skirt and cylinder sleeve, reduce
Frictional resistance, unloads piston skirt concentrated stress, to reach raising piston lubrication effect, prolongation piston and cylinder service life
Purpose.Vertical indent striped makes whole piston realize lightweight in the design of piston skirt, reduces oil consumption, plays energy-conservation
Effect.
In sum, the present invention considers that in working order lower stress is uneven for piston skirt, outside piston skirt
Surface is equidistantly evenly arranged the vertical indent striped being parallel to each other, and vertical indent striped is that Trapezoidal and varying depth are designed,
Upper stress less position in piston skirt is designed with the first deep vertical indent striped such as wide, and piston skirt upper stress is larger
Position is designed with the wide second vertical indent striped of varying depth shallow under depth, so that piston stress distribution in motor process
Evenly, while vertical indent striped will focus on the stress at the road annular groove spill port of piston the 3rd is unloaded, work is extended
The fatigue life of plug.Vertical indent striped can store lubricating oil and abrasive dust, piston is moistened in reciprocatory movement in cylinder sleeve
Lubricating oil can be supplied fully, be evenly distributed, Decentralized Friction heat, improve lubricant effect, reduce frictional resistance, prevented scuffing of cylinder bore and struck
Cylinder, extends the service life of piston and cylinder.
Description of the drawings
Below in conjunction with the drawings and specific embodiments, the present invention is further illustrated：
Fig. 1 is a kind of first embodiment side view of energy-saving, service life prolonged engine piston of the present invention.
Fig. 2 is the profile of the overlook direction piston skirt of Fig. 1.
Fig. 3 is second embodiment of the present invention side view, has through hole between vertical indent striped.
Fig. 4 is third embodiment of the present invention side view, has the 3rd vertical indent striped between vertical indent striped.
Fig. 5 is the first vertical indent striped schematic diagram.
Fig. 6 is the second vertical indent striped schematic diagram.
Fig. 7 is the skirt length in first embodiment and vertical indent fringe spacing schematic diagram.
Fig. 8 is the sectional view of first embodiment, shows that depth, width and the piston skirt skirt of vertical indent striped is thick.
Fig. 9 is the sectional view of second embodiment, shows the diameter of through hole.
Figure 10 is the sectional view of 3rd embodiment, shows the depth and width of the 3rd vertical indent striped.
Figure 11 is the schematic diagram of the rounded rectangular shape in section.
Figure 12 is the schematic diagram of the rounded triangle state in section.
Figure 13 is schematic diagram of the section in circular arc state.
In figure：1- piston skirts, the vertical indent stripeds of 2- first, the vertical indent stripeds of 3- second, 4- through holes, 5- the 3rd are erected
Shape indent striped, L- skirts are long；The vertical indent fringe spacings of S-；T- skirts are thick；Depth, the W2- first of the vertical indent stripeds of H2- first
The depth of the vertical indent striped of the width of vertical indent striped, H3- second, width, the D- through holes of the vertical indent stripeds of W3- second
Diameter, the depth of the vertical indent stripeds of H5- the 3rd, the width of the vertical indent stripeds of W5- the 3rd.
Specific embodiment
As shown in Figure 1, Figure 2, shown in Fig. 5, Fig. 6 and Fig. 7, the present invention has equidistantly been evenly arranged in the outer surface of piston skirt 1
The vertical indent striped being parallel to each other, the vertical indent striped includes the vertical interior recessed bar of the first vertical indent striped 2 and second
Stricture of vagina 3, less first vertical indent striped 2 of the position design with even depth of the upper stress of piston skirt 1, should on piston skirt 1
The second shallow vertical indent striped 3 under the larger upper depth of position design of power, the second vertical indent striped 3 apart from top land end compared with
Deep, shallower apart from piston base end, depth is linearly successively decreased change from the top of piston skirt 1 to bottom, and linear relationship is Y=-X
(H1-H0)/L3, X and Y are respectively the abscissa and vertical coordinate of point in plane, and H1 is piston tip end face groove depth, and H1 is piston skirt
35%~40%, H0 of the thickness of portion 1 is piston bottom end end face groove depth, and piston bottom end end face groove depth is piston tip end face groove depth
70%~80%, L3 are the length of the second vertical indent striped 3.1 point of the piston skirt is principal stress supporting region and secondary stress
Supporting region, the first vertical indent striped 2 is located at secondary stress supporting region, and the second vertical indent striped 3 is located at principal stress supporting region.
As shown in Figure 3 and Figure 9, the present invention is to arrange to be opened up on the interfringe piston skirt 1 of vertical indent in arbitrary neighborhood two
There is through hole 4, the string longitudinal arrangement of the through hole 4 is arranged between vertical indent striped two, the adjacent through-holes 4 in each column through hole 4
Spacing is the 13%~15% of the long L of the skirt of piston skirt 1, and it is vertical for first to be arranged in the diameter D of through hole 4 in secondary stress supporting region
The 70%~80% of the width of indent striped 2, the diameter D of through hole 4 for being arranged in principal stress supporting region is that the second vertical indent striped 3 is wide
The 70%~80% of degree.
As shown in Fig. 4, Fig. 8 and Figure 10, the present invention is equidistantly to be evenly arranged to be parallel to each other in the outer surface of piston skirt 1
Vertical indent striped, arrange in arbitrary neighborhood two and the 3rd vertical indent striped 5 be provided between vertical indent striped, the 3rd it is vertical in
The depth H 5 and width W5 of recessed bar stricture of vagina 5 is the 60%~70% of the vertical indent fringe depths in both sides and width, is arranged in secondary stress
With reference to the first vertical indent striped 2, width is the first vertical indent to the 3rd vertical shape and size of indent striped 5 in supporting region
The 60%~70% of the width of striped 2, depth is the 60%~70% of the vertical depth of indent striped 2 in its both sides first；It is arranged in master
With reference to the second vertical indent striped 3, width is in second vertical to the 3rd vertical shape and size of indent striped 5 of stress supporting region
The 60%~70% of the width of recessed bar stricture of vagina 3, it is 60%~70% that depth is the vertical depth of indent striped 3 in its both sides second.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Figure 11, the first vertical indent striped 2, the second vertical indent striped 3 and the 3rd
The cross sectional shape of vertical indent striped 5 is round rectangle, and the design in round rectangle section can evade orthogonal rectangle in sharp corner
Stress concentration.
As shown in figure 12, the first vertical indent striped 2, the vertical indent striped 5 of the second vertical indent striped 3 and the 3rd cut
Face shape can be rounded triangle, and the design in rounded triangle section can evade stress concentration of the wedge angle triangle in sharp corner.
As shown in figure 13, the first vertical indent striped 2, the vertical indent striped 5 of the second vertical indent striped 3 and the 3rd cut
Face shape can be circular arc, can evade problem of stress concentration.
First vertical indent striped 2, the second vertical indent striped 3, the gross area of the vertical indent striped 5 of through hole 4 and the 3rd
Account for the 10%~27% of the area of piston skirt 1.
The depth H 2 of the first vertical indent striped 2 is the 35%~40% of piston skirt thickness T, the second vertical indent striped 3
Most deep end depth is equal to the depth H 2 of the first vertical indent striped 2, and most shallow end depth is the 70%~80% of most deep end depth H 2.
The width W2 of the first vertical indent striped 2 is the 0.3%~0.4% of piston skirt girth, the second vertical interior recessed bar
The width W3 of stricture of vagina 3 is the 80% of the width W2 of the first vertical indent striped 2.
Adjacent two arrange vertical indent fringe spacing S for the 2%~4% of the girth of piston skirt 1.
First vertical indent striped 2, the vertical indent striped 5 of the second vertical indent striped 3 and the 3rd are in the outer surface of piston skirt 1
Be distributed as all or local.
The present invention is a kind of energy-saving, service life prolonged engine piston, be can be applicable in various electromotors such as gasoline engine, diesel engine,
Its occupation mode, method require that concrete size is entered according to the size of piston skirt 1 with common standard piston without Special use
Row adjustment.
The present invention is interior based on a kind of energy-conserving and environment-protective of previous research (application number 2015101557464) of this seminar
The patent of invention of combustion engine piston, is further improved research, make engine piston structure more improve and increase profit, anti-attrition,
Prolonging life is further improved.Simulation analysis and stand examination are carried out for standard piston, early-stage Study piston and inventive piston
Test, test method and test data Comparative result are as follows.
With XL-2V piston of automobile engine as study subject.Piston external diameter：80.985mm；Skirt thickness T：2.4mm；The long L of skirt：
35.16mm；Piston material：Aluminium alloy；Test period：800 hours；Nominal power：80kW/6000r/min；Test Indoor Temperature
Degree：20℃.First according to early-stage Study piston and inventive piston design experiment piston, Stripe Size and arrangement such as Tables 1 and 2
It is shown.According to by spreadsheet engine actual condition, force analysis is carried out to piston, by finite element analyses obtain standard piston,
The themal-mechanical coupling finite element analyses stress distribution result of early-stage Study piston and inventive piston, each position distortions result of piston
And fatigue life result, lubricating oil film are in each site distribution result in piston skirt 1, as shown in table 4, table 5, table 6 and table 7.
The early-stage Study piston (mm) of table 1
The inventive piston of table 2 (mm)
Note, width of fringe of the 3rd vertical indent striped 5 in secondary stress supporting region is 0.7mm, in principal stress supporting region
Shallow vertical indent striped 5 under depth is designed as, width is 0.55mm, deep end depth is 0.7mm, shallow end depth is 0.55mm.It is logical
Hole 4 is distributed in a diameter of 0.7mm in secondary stress supporting region, in a diameter of 0.55mm of principal stress supporting region.
For convenience of hereafter stating, above-mentioned test is numbered with piston, as shown in table 3.
The test of table 3 is numbered with piston
Data are that inventive piston and each position of early-stage Study piston have for standard piston themal-mechanical coupling in table 4
The stress arrangement contrast of finite element analysis, in following table data be stress percentage rate be invention piston stress and standard piston stress it
Business, the less explanation stress of the value is unloaded scattered better.Set because the vertical indent striped section of inventive piston is with rounded corners
Meter, has evaded the phenomenon that early-stage Study piston cross-section design stress is concentrated in sharp corner, therefore piston skirt can be seen in table 4
1 stress is obviously reduced, it is ensured that the stability of pistons work.
Themal-mechanical coupling finite element analyses stress distribution result (%) of table 4
Data are that inventive piston and each position of early-stage Study piston have for standard piston themal-mechanical coupling in table 5
The deformation arrangement contrast of finite element analysis, data are that the deformation of invention piston deforms it with standard piston for deformation percentage rate in following table
Business, the less explanation invention piston of the value is less for standard piston deformation, and piston knock, scuffing of cylinder bore probability are less.Can be seen that this
Open piston deformation is significantly less than standard piston and early-stage Study piston.
The each position distortions result (%) of the piston of table 5
Data are that inventive piston and each position of early-stage Study piston are arranged for standard piston fatigue life in table 6
Contrast, in following table data be fatigue life percentage rate be invention piston fatigue life-span and standard piston fatigue life business, the value
Bigger explanation invention piston is longer for standard piston fatigue life.Can be seen that inventive piston fatigue life is significantly greater than standard
Piston and early-stage Study piston.
The each position fatigue life result (%) of the piston of table 6
Data are that inventive piston and each position of early-stage Study piston are directed to standard piston skirt section oil film thickness in table 7
Arrangement contrast, data invent the oil film thickness of piston skirt 1 and standard piston oil film thickness for oil film thickness percentage rate in following table
Business, the value it is bigger explanation invention piston skirt for standard piston oil film thickness it is thicker.It can be seen that inventive piston lubrication
Effect is better than standard piston and early-stage Study piston.
The oil film thickness result (%) of table 7
In Jilin University's engineering, automobile engine cold test platform has been built by bionical key lab of the Ministry of Education, in the present invention
Piston carry out bench test, with investigate the present invention using effect.Under same test conditions, it is contemplated that dismounting every time is started
The error of machine, is put into three early-stage Study pistons or inventive piston in four cylinders in test every time and a standard is lived
Fill in capable test.Do two groups of tests, per group of test piston and this group of standard piston Data Comparison such as table 8, table 9 and the institute of table 11
Show, be analyzed and compare.
This test is stand cold test, and piston face will not form carbon distribution, in order to check piston test before and after abrasion condition,
Quality before piston test and after test is weighed, is weighed 6 times and is averaged, by the meansigma methodss of piston weight before and after test
Subtract each other and just obtain wear extent.Piston is just invented with standard piston wear extent difference again than standard piston wear extent in invention
Middle piston wear amount reduces ratio, and the bigger explanation piston wear of the ratio is less.Refer to table 8.It is of the invention as can be seen from the table
Piston abrasion-proof is better than standard piston and early-stage Study piston.Overall wear-resisting rate improves 5%.
The test of table 8 is detected with piston wear amount
In order to verify thermolysis of the vertical indent striped when piston normally runs.This test adopts Fluketi32 types
Infrared thermography (- 20 DEG C of temperature detection range~600 DEG C) carries out thermal imaging collection to the piston in work, and (gatherer process is equal
Meet GB), top land maximum temperature when it moves to cylinder topmost position is caught to each piston, collection asks flat 6 times
Average.Software kit can accurately extract the temperature value of each point and the meansigma methodss in region.Piston and standard piston in invention
Temperature gap just obtains piston temperature in invention and reduces ratio, the bigger explanation piston temperature of the ratio again than standard piston temperature
Reduce more, radiating effect better.Refer to table 9.The friction shape between piston and cylinder sleeve is further improved due to inventive piston
Condition, reduces frictional heat, therefore the detection to top land temperature is below standard piston and early-stage Study piston, bulk temperature drop
It is low by 35.2%.
9 second groups of top lands maximum temperature (DEG C) of table
In motor process, the skirt surface for being distributed in pin-and-hole both sides rubs, weares and teares piston, but due to piston pin
The eccentric design in hole, makes during piston movement that Main thrust face stress is bigger, and test effect becomes apparent from, so this test data is equal
For Main thrust face collection.The roughness measurement of the Main thrust face of piston skirt 1, carrys out comparative study standard piston after to test
Friction, abrasion condition with invention piston.
Sampled using roughness instrument, sampling parameter is arranged：Sample length 0.25mm；Roughness concentration：Curved surface；
Measurement range：- 0.25mm~0.25mm；Contact pilotage radius：2μm；Bar is long：50000μm.Test sampling piston position is identical, each
Sampling location to piston bottom back gauge is shown in Table 10, and distance is each positional distance piston bottom edge lengths in figure.It is detection in table 11
The business of the contrast percentage rate of Ra values standard piston and invention piston, i.e. invention piston roughness and standard piston roughness, the value
Invention piston wear degree is less for less explanation, oil film more uniform, piston abrasion-proof of arranging is more superior in the course of work.It can be seen that
Inventive piston lubricant effect is better than standard piston and early-stage Study piston.Further demonstrate the analysis result of finite element.
The piston sampling location explanation of table 10
The piston roughness measurement value of table 11 contrasts (%)
Claims (6)
1. a kind of energy-saving, service life prolonged engine piston, including top land and piston skirt (1), is characterized in that：The piston skirt
Portion (1) is divided into principal stress supporting region and secondary stress supporting region, has equidistantly been evenly arranged in piston skirt (1) outer surface mutually flat
Capable vertical indent striped, the vertical indent striped includes the first vertical indent striped (2) and the second vertical indent striped
(3),
Wherein first vertical indent striped (2) waits deep positioned at secondary stress supporting region, the first vertical indent striped (2) for wide
Groove type structure, the rounded rectangle of channel section, rounded triangle or circular arc；
Wherein second vertical indent striped (3) is grade wide groove positioned at principal stress supporting region, the second vertical indent striped (3)
Shape structure, the rounded rectangle of channel section, rounded triangle or circular arc, the depth of the second vertical indent striped (3) is from piston
Skirt section (1) top to bottom is linearly successively decreased change, and linear relationship is respectively point in plane for Y=-X (H1-H0)/L3, X and Y
Abscissa and vertical coordinate, H1 be piston tip end face groove depth, H1 for piston skirt (1) thickness 35%~40%, H0 for live
Plug bottom end face groove depth, piston bottom end end face groove depth is in second vertical for 70%~80%, L3 of piston tip end face groove depth
The length of recessed bar stricture of vagina (3).
2. a kind of energy-saving, service life prolonged engine piston according to claim 1, is characterized in that：Adjacent two arrange vertical interior recessed bar
Stricture of vagina spacing is the 2%~4% of piston skirt (1) girth.
3. a kind of energy-saving, service life prolonged engine piston according to claim 1, is characterized in that：The first vertical interior recessed bar
The width of stricture of vagina (2) is the 0.3%~0.4% of piston skirt (1) girth；The width of the second vertical indent striped (3) is the
The 80% of one vertical indent striped (2) width.
4. a kind of energy-saving, service life prolonged engine piston according to claim 1, is characterized in that：Arrange vertical in arbitrary neighborhood two
Through hole (4) is offered on the interfringe piston skirt of indent (1), through hole (4) the string longitudinal arrangement is in the vertical indent of two row
Between striped, the spacing of the adjacent through-holes (4) in each column through hole (4) is the 13%~15% of piston skirt (1) skirt length, and is arranged
70%~80% of a diameter of first vertical indent striped (2) width of through hole (4) in secondary stress supporting region, is arranged in main answering
The 70%~80% of a diameter of second vertical indent striped (3) width of through hole (4) of power supporting region.
5. a kind of energy-saving, service life prolonged engine piston according to claim 1, is characterized in that：Arrange vertical in arbitrary neighborhood two
The 3rd vertical indent striped (5) is provided between indent striped, the 3rd vertical indent striped (5) is parallel to each other with vertical indent striped
Arrangement, vertical indent striped (5) width of the 3rd be arranged in secondary stress supporting region is the first vertical indent striped (2) width
60%~70%, depth is the 60%~70% of vertical indent striped (2) depth in its both sides first；It is arranged in principal stress supporting region
The 3rd vertical indent striped (5) width be the 60%~70% of the second vertical indent striped (3) width, depth is its both sides the
Two vertical indent striped (3) depth are 60%~70%.
6. a kind of energy-saving, service life prolonged engine piston according to claim 5, is characterized in that：The 3rd vertical interior recessed bar
The rounded rectangle in stricture of vagina (5) section, rounded triangle or circular arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710133929.5A CN106677917B (en) | 2017-03-08 | 2017-03-08 | Energy-saving and life-prolonging engine piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710133929.5A CN106677917B (en) | 2017-03-08 | 2017-03-08 | Energy-saving and life-prolonging engine piston |
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| Publication Number | Publication Date |
|---|---|
| CN106677917A true CN106677917A (en) | 2017-05-17 |
| CN106677917B CN106677917B (en) | 2022-11-15 |
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|---|---|---|---|
| CN201710133929.5A Active CN106677917B (en) | 2017-03-08 | 2017-03-08 | Energy-saving and life-prolonging engine piston |
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| CN (1) | CN106677917B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026427A (en) * | 2018-09-30 | 2018-12-18 | 滨州学院 | Novel forging steel piston |
| CN109296471A (en) * | 2018-09-10 | 2019-02-01 | 天津酝环科技发展有限公司 | A kind of high-efficiency lubricating piston |
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|---|---|---|---|---|
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| CN106677917B (en) | 2022-11-15 |
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