CN105156171B - A kind of lubrication fabricated structure of engine piston connecting rod group - Google Patents
A kind of lubrication fabricated structure of engine piston connecting rod group Download PDFInfo
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- CN105156171B CN105156171B CN201510504408.7A CN201510504408A CN105156171B CN 105156171 B CN105156171 B CN 105156171B CN 201510504408 A CN201510504408 A CN 201510504408A CN 105156171 B CN105156171 B CN 105156171B
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Abstract
The invention belongs to field of mechanical technique, a kind of lubrication fabricated structure of engine piston connecting rod group is proposed.A kind of lubrication fabricated structure of the engine piston connecting rod group proposed includes connecting rod lubrication structure and piston cooling structure；Connecting rod lubrication structure has the rod journal oilhole being located on rod journal（8）；Rod journal oilhole（8）For the radial direction through hole on rod journal, and communicated with diesel engine main oil gallery；Wrist-pin end of connecting rod（13）Upper end be provided with to the Oil Guide set that is connected with piston cooling structure（27）；The interior cooling chamber that piston cooling structure has（25）；Oil Guide set（27）Upper end outlet be located at interior cooling chamber（25）It is interior；Interior cooling chamber（25）Periphery be provided with outer cooling chamber（23）.The piston cooling of the present invention and connecting rod lubrication share same oil passageway, design easier, reliability is higher, and have the characteristics of lubrication and cooling effectiveness are high.
Description
Technical field
The invention belongs to field of mechanical technique, it is related to a kind of lubrication fabricated structure of engine piston connecting rod group.
Background technology
Piston connecting rod unit is the important drive disk assembly of engine, and the pressure of burning gases is transmitted to bent axle, revolves bent axle by it
Turn and export power, piston connecting rod unit is made up of parts such as piston, piston ring, piston pin, connecting rods；Piston is constituted with cylinder head to be fired
Burn room, bear the combustion gas bulbs of pressure, power be transmitted to by bent axle by piston pin and connecting rod, by connecting rod drive complete air inlet, compression,
It is vented three auxiliary strokes；
Piston is made up of head and skirt section two parts.Piston crown cuts with some annular grooves, to ring installation.It is living
Plug skirt section is targeting part of the piston in cylinder motion, and piston skirt is used for installing piston pin provided with piston pin hole.
Piston ring is divided into two kinds of compression ring and oil ring.The effect of compression ring is the gap between sealing piston and cylinder wall, is prevented
Gas in cylinder leaks into crankcase, and the heat of piston crown is transmitted into cylinder wall.The effect of oil ring is will be more on cylinder wall
Remaining lubricating oil is scraped, and reduces the generation that lubricating oil scurries into carbon film in combustion chamber, retarded combustion room.Oil ring can also make cylinder
Lubricating oil film is evenly distributed on wall, improves piston lubrication condition.
Piston pin is used for connecting piston and connecting rod, and transmits active force between the two.Piston pin two supports are in piston
It is often spacing with lock ring insertion annular groove at piston skirt pin-and-hole two ends for the axial float of anti-shotpin in the pin-and-hole in skirt section.
The effect of connecting rod is connection piston and bent axle, and transmits active force between the two.Turn the reciprocating motion of piston
It is changed to the rotary motion of bent axle.Connecting rod is made up of small end, shaft, the part of connecting rod cap three.Antifriction bush is pressed with wrist-pin hole,
Bushing and piston pin connection；The big end semicircle orifice of connecting rod shank is connected with the semicircle orifice of connecting rod cap by connecting-rod bolts, in order to subtract
Few friction, extends and embeds two semicircles in the life-span of rod journal, the big end semicircle orifice of shaft and the semicircle orifice of connecting rod cap respectively
The thin-walled connecting rod bearing shell of shape.
Because piston bears the double action of mechanical load and thermic load, condition of work very severe, it is necessary to reliable design
Cooling structure, to reduce the temperature of piston face, on the other hand, connecting rod bears larger mechanical load, wrist pin bush
Bearing capacity between connecting rod bearing shell these two pair bearing is larger, it is necessary to reliable lubrication system.It is existing to be permitted multiengined piston
Cooled down using cooling nozzles fuel feeding, such as patent《A kind of all-steel piston with introducing-type cooling oil chamber》（CN202883148U）Just
Using the structure, cooling nozzles are arranged on body, piston in reciprocatory movement, nozzle and piston fuel feed hole apart from when
Small when big, few when many during the machine oil of injection into pistion cooling chamber, piston cooling is insufficient；On the other hand, it is the injection of guarantee nozzle
Distance, injection diameter is very small, and some minimum particles are all likely to result in spray orifice blocking, piston can be caused to draw when blocking serious
Cylinder.Wrist pin bush generally uses splash lubrication with piston pin, and lubricating oil is scraped off usually from piston ring from cylinder jacket
Machine oil, engine oil pressure is low, flow velocity is slow and the easily metal fillings that is scraped from cylinder jacket of entrainment piston ring, and then scratch connecting rod is small
End liner set.Improvement piston of how adopting an effective measure is cooled down and connecting rod lubrication effect, and many engine producers give more sustained attention
Problem.
The content of the invention
In order to solve the above technical problems, the purpose of the present invention is to propose to a kind of lubrication group of engine piston connecting rod group
Box-like structure.
The present invention adopts the following technical scheme that to complete above-mentioned purpose：
A kind of lubrication fabricated structure of engine piston connecting rod group, piston connecting rod unit includes piston, piston pin
And connecting rod；The wrist-pin end of connecting rod of the connecting rod is connected by piston pin with described piston；Described piston pin and described connecting rod
Wrist pin bush is provided between small end；Embedded respectively in the big end semicircle orifice of the connecting rod shank and the semicircle orifice of connecting rod cap
Two semicircular upper connecting rod bearing shells and lower link bearing shell, upper and lower connecting rod bearing shell are arranged on the rod journal of bent axle, and with connecting
Bar axle journal gap coordinates, and connecting rod shank and connecting rod cap are bolted；Be respectively provided with described connecting rod shank and connecting rod cap with
The bolt hole that described bolt coordinates, and described bolt and described bolt interporal lacuna cooperation；Described lubrication combination
Formula structure includes connecting rod lubrication structure and piston cooling structure；Described connecting rod lubrication structure, which has, is located at the crankshaft-link rod
Rod journal oilhole on axle journal；Described rod journal oilhole is radial direction through hole on rod journal, and and bavin
Oil machine main oil gallery is communicated；There is the oil groove II communicated with rod journal oilhole on the endoporus wall of the lower link bearing shell；It is described
There are circumferential multiple radial direction oil-through-holes I in the outside wall surface of lower link bearing shell；Multiple described radial direction oil-through-hole connections
Described oil groove II and oil groove III；The oil groove III is the semicircle oil groove on connecting rod cap internal face, described oil groove III
Connect the annular gap between bolt and described bolt hole, and the annular gap between bolt and bolt hole forms oil
Chamber；Described oil pocket is connected by the inclined oil hole of air on connecting rod shank with one end of straight oilhole on connecting rod shank；The inclined oil hole of air
Center line and connecting rod shank center line into 30 ° of angles；The center line of the straight oilhole is overlapped with connecting rod shank center line；Institute
The other end of straight oilhole is stated with the oil groove I on wrist-pin end of connecting rod to be connected；Described oil groove I is positioned at wrist-pin end of connecting rod endoporus center
Annular groove；There is the radial direction oil-through-hole of multiple 270 ° of circumference uniform distributions along wrist pin bush on described wrist pin bush
Ⅱ；Multiple described radial direction oil-through-holes II are communicated with oil groove I；There is deep-slotted chip breaker on the internal face of the wrist pin bush, and
The radian of the deep-slotted chip breaker is 270 °；Described deep-slotted chip breaker is communicated by multiple radial direction oil-through-holes II with oil groove I；The connecting rod is small
The top at end has oil outlet, the center line and connection-rod of the oil outlet
Body center line is overlapped；Described oil outlet is communicated with described oil groove I；
The upper end of the wrist-pin end of connecting rod is provided with the Oil Guide set to be connected with piston cooling structure；Described Oil Guide set
Centered on there is the stepped revolving body of oil inlet passage, the cylindrical of stepped revolving body is three multi-diameter shafts, and upper end axle journal is minimum,
Intermediate journal is larger, and lower end journal is maximum, and intermediate journal uses arc transition with lower end journal；Under the stepped revolving body
End face is the circular conical surface tangent with periphery at the top of wrist-pin end of connecting rod；The Oil Guide set oil inlet passage that has of center for it is up-small and down-big,
And junction is the shoulder hole of conical surface transition；Spring is equipped with the upper end axle journal of Oil Guide set；The lower end of the spring leads to
Cross supporting bead to be supported on the upper cascaded surface of Oil Guide set, the upper end of the spring is contacted with the spring base of piston cooling structure,
And packing washer is set between described spring base and described spring, by described Oil Guide set by piston cooling structure and company
Bar lubrication system is connected；Described spring base is to be arranged on the cylindrical boss above piston skirt；Cylindrical boss have it is upper it is small under
Big shoulder hole, the aperture of shoulder hole and Oil Guide put the cooperation of end-journal gap, macropore and Oil Guide set intermediate journal it is cylindrical between
Gap coordinates, and macropore lower end has the annular groove to install circlip；The circlip is cyclic structure, circlip
Diameter of bore is less than the outer diameter of a circle of Oil Guide set intermediate journal, before installing connecting rods, to prevent Oil Guide set from being slided from piston
Fall；
Described piston cooling structure has the interior cooling chamber that the spring base described in collar is set；Described interior cooling chamber is
Top surface is spherical loop configuration；The upper end outlet of described Oil Guide set is located in described interior cooling chamber；The interior cooling chamber
Periphery be provided with outer cooling chamber；Described outer cooling chamber is up big and down small loop configuration, and by circumferential along piston axis
Uniform multiple oil guiding holes are connected with interior cooling chamber；The lower section of the outer cooling chamber has spill port；The spill port is located at
On piston skirt, one end of spill port is communicated with outer cooling chamber, and the other end is communicated with the external world.
The lubrication fabricated structure of engine piston connecting rod group proposed by the present invention, using above-mentioned technical proposal, tool
Have the advantages that：
1）Piston is cooled down and connecting rod lubrication shares same oil passageway, designs easier, reliability is higher；
2）Lubricate wrist pin bush and the machine oil of piston pin mating surface, connecting rod bearing shell and rod journal mating surface, cooling
The machine oil of piston, both is from the pressure oil cavity in engine body, and machine oil flow velocity is high, flow is big, fuel feeding is abundant, lubrication and cooling
Efficiency high.
3）While machine oil carries out connecting rod lubrication, it is cold that the cooling chamber for still having continual machine oil to enter piston carries out piston
But, lubricating oil completes connecting rod lubrication and piston cooling simultaneously all the way, and compared with installing the structure of piston cooling nozzle, structure is more
Simply, reliability is higher, while saving cost.
4）Piston uses inside and outside two layers of cooling chamber, successively cools down from inside to outside, interior cooling chamber, to engine chamber bottom
Portion is cooled down, and outer cooling chamber is cylindrical to piston crown, sidewall of combustion chamber is cooled down, and significantly reduces piston higher because bearing
Thermic load and the thermal stress produced and thermal strain, improve the fatigue life of piston.
5）Piston is cooled down and connecting rod lubrication attachment means serve good instrumentality, and when engine works, spring leads to
Packing washer and supporting bead are crossed, compressive state is in the spring base of piston, with swinging for connecting rod, Oil Guide is enclosed on
Under the compression of spring, lower end orifice chamfer face is close on small end of connecting rod sphere all the time, and effectively prevention machine oil is up to work
The problems such as being leaked during plug, has fully ensured that the cooling oil mass into piston, and piston cooling is relatively reliable.In addition, peace
Circlip endoporus on the spring base of piston is slightly less than the intermediate journal of Oil Guide set, can prevent from connecting before installing connecting rods
Connection device drops, it is ensured that attachment means installation reliability.
Brief description of the drawings
Fig. 1 is the lubrication system sectional view of connecting rod shank and connecting rod cap in the present invention.
Fig. 2 is wrist-pin end of connecting rod lubrication system and piston cooling structure sectional view in the present invention.
In figure：1st, connecting rod shank；2nd, rod journal；3rd, lower link bearing shell；4th, oil groove II；5th, connecting rod cap；6th, oil groove III；
7th, radial direction oil-through-hole I；8th, rod journal oilhole；9th, oil pocket；10th, bolt；11st, inclined oil hole of air；12nd, straight oilhole；13rd, wrist-pin end of connecting rod；
14th, wrist pin bush；15th, piston pin；16th, radial direction oil-through-hole II；17th, oil groove I；18th, deep-slotted chip breaker；19th, oil outlet；20th, return
Oilhole；21st, piston crown；22nd, circlip；23rd, outer cooling chamber；24th, oil guiding hole；25th, interior cooling chamber；26th, spring base；27、
Oil Guide set；28th, packing washer；29th, spring；30th, supporting bead；31st, piston skirt；32nd, upper connecting rod bearing shell.
Embodiment
The present invention is illustrated with reference to the drawings and specific embodiments：
As shown in Figure 1 and Figure 2, a kind of lubrication fabricated structure of engine piston connecting rod group, piston connecting rod unit includes
There are piston, piston pin 15 and connecting rod；The wrist-pin end of connecting rod 13 of the connecting rod is connected by piston pin 15 with described piston；Described
Wrist pin bush 14 is provided between piston pin 15 and described wrist-pin end of connecting rod 13；The big end semicircle orifice of the connecting rod shank 1
With in the semicircle orifice of connecting rod cap respectively embed two semicircular upper connecting rod bearing shells 32 and lower link bearing shell 3, upper and lower connecting rod bearing shell
Coordinate on the rod journal 2 of bent axle, and with the gap of rod journal 2, connecting rod shank 1 and connecting rod cap 5 are connected by bolt 10
Connect；The bolt hole coordinated with described bolt 10, and described bolt 10 are respectively provided with described connecting rod shank 1 and connecting rod cap 5
Coordinate with described bolt interporal lacuna；Described lubrication fabricated structure includes connecting rod lubrication structure and piston cooling knot
Structure；Described connecting rod lubrication structure has the rod journal oilhole 8 being located at described in bent axle on rod journal；Described rod journal
Oilhole 8 is the radial direction through hole on rod journal, and is communicated with diesel engine main oil gallery；Described lower link bearing shell 3
There is the oil groove II 4 communicated with rod journal oilhole on endoporus wall；Have circumferentially in the outside wall surface of the lower link bearing shell 3
11 radial direction oil-through-holes I 7 of distribution；Radial direction oil-through-hole 7 described in 11 connects described oil groove II 4 and oil groove III 6；Institute
It is the semi-circular groove on connecting rod cap internal face to state oil groove III 6, described the connection bolt 10 of oil groove III 6 and described bolt hole
Between annular gap, and the annular gap between the bolt hole of bolt 10 forms oil pocket 9；Described oil pocket 9 passes through connecting rod
Inclined oil hole of air 11 on shaft is connected with one end of straight oilhole 12 on connecting rod shank；The center line and connection-rod of the inclined oil hole of air 11
The center line of body is into 30 ° of angles；The center line of the straight oilhole 12 is overlapped with connecting rod shank center line；The straight oilhole 12 it is another
One end is connected with the oil groove I 17 on wrist-pin end of connecting rod；Described oil groove I 17 is the annular groove positioned at wrist-pin end of connecting rod endoporus center；
There is the radial direction oil-through-hole II 16 of multiple 270 ° of circumference uniform distributions along wrist pin bush on described wrist pin bush 14；It is many
Individual described radial direction oil-through-hole II 16 is communicated with oil groove I 17；There is deep-slotted chip breaker 18 on the internal face of the wrist pin bush 14,
And the radian of the deep-slotted chip breaker 18 is 270 °；Described deep-slotted chip breaker 18 is communicated by multiple radial direction oil-through-holes II 16 with oil groove I 17；
The top of the wrist-pin end of connecting rod has oil outlet 19, and 19 center lines of the oil outlet are overlapped with connecting rod shank center line；It is described
Oil outlet 19 communicated with described oil groove I 17；
The upper end of the wrist-pin end of connecting rod 13 is provided with the Oil Guide set 27 to be connected with piston cooling structure；Described leads
There is the stepped revolving body of oil inlet passage, the cylindrical of stepped revolving body is two multi-diameter shafts, upper shaft centered on oil jacket 27
Neck is minimum, and intermediate journal is larger, and lower end journal is maximum, and intermediate journal uses arc transition with lower end journal；Described stepped time
The lower surface of swivel is circular conical surface, and circular conical surface and periphery at the top of wrist-pin end of connecting rod are tangent；What 27 centers of Oil Guide set had enters
Oily passage is up-small and down-big and junction is the shoulder hole of conical surface transition；It is equipped with the upper end axle journal of Oil Guide set 27
Spring 29；The lower end of the spring 29 is supported on by supporting bead 30 on the upper cascaded surface of Oil Guide set 27, the spring 27
Upper end is contacted with the spring base 26 of piston cooling structure, and setting is compressed between described spring base 26 and described spring 29
Packing ring 28,27 are covered by piston cooling structure and connecting rod lubrication fabric connectivity by described Oil Guide；The packing washer 28 is ring-type
Structure, it is that larger gap coordinates that packing ring endoporus covers 27 upper end axle journals with Oil Guide, and packing ring lower surface is contacted with the upper surface of spring 29；
The supporting bead 30 is cyclic structure, and it is that larger gap coordinates that packing ring endoporus covers 27 upper ends cylindrical with Oil Guide, packing ring upper end
Face is contacted with the lower surface of spring 29, and packing ring lower surface is contacted with cascaded surface on Oil Guide set 27；Described spring base 26 is to be arranged on
Cylindrical boss above piston skirt；Cylindrical boss has up-small and down-big shoulder hole, aperture and the Oil Guide set upper side of shoulder hole
Axle journal gap coordinates, and the cylindrical gap that macropore covers intermediate journal with Oil Guide coordinates, and macropore lower end has in an annular groove, annular groove
One circlip 22 is installed, the circlip 22 is cyclic structure, and back-up ring is arranged on the annular groove that Oil Guide covers 27 endoporus
Interior, the diameter of bore of circlip 22 is slightly less than Oil Guide and covers the outer diameter of a circle of 27 intermediate journals, and the effect of circlip 22 is, in peace
Before load bar, prevent Oil Guide from covering 27 and being slid from piston；
Described piston cooling structure has the interior cooling chamber 25 set around described spring base；Described interior cooling chamber
25 be that top surface is spherical loop configuration；The upper end outlet of described Oil Guide set 27 is located in described interior cooling chamber 25；It is described
The periphery of interior cooling chamber 25 is provided with outer cooling chamber 23；Described outer cooling chamber 23 is up big and down small loop configuration, and is passed through
It is connected along the circumferentially uniform multiple oil guiding holes 24 of piston axis with interior cooling chamber；The lower section of the outer cooling chamber 23 has oil return
Hole 20；The spill port 20 is located on piston skirt 31, and one end of spill port 20 is communicated with outer cooling chamber 23, the other end and the external world
Communicate.
The connecting rod lubrication principle for the fabricated structure that a kind of engine of the present invention is cooled down with connecting rod lubrication and piston：
Pressure machine oil slave body principal pressure oil duct enters rod journal oilhole 8, a part of inflow rod journal 2 and upper connecting rod bearing shell 32
Matching surface is lubricated, another part flow into oil groove II 4, through radial direction oil-through-hole I enter oil groove III 6, then through connecting rod bolt and
Oil pocket 9 between gonnecting rod body, into inclined oil hole of air 11, the oil groove I 17 of wrist-pin end of connecting rod is flowed into through straight oilhole 12；Then a part of machine oil
Through oilhole 16, into deep-slotted chip breaker 18, then flow into the matching surface of wrist pin bush 14 and piston pin 15 and be lubricated, another portion
The outflow connecting rod of oil outlet 19 divided in oil groove I 17；The machine oil for lubricating connecting rod comes from body principal pressure oil duct, strengthens lower link axle
Watts 3 with rod journal mating surface, the forced feed lubrication effect of wrist pin bush 14 and piston pin 15；Oil groove III 6, oil groove II 4, oil
Groove I 17 and deep-slotted chip breaker 18 are acted on good oil storage, are started and disorderly closedown moment in engine, and confession occurs in lubricating oil pump
The phenomenon of shortage of oil, the machine oil being stored in each oil groove can be supplemented in time, improve the reliability of connecting rod lubrication.
The piston cooling principle for the fabricated structure that a kind of engine of the present invention is cooled down with connecting rod lubrication and piston：
The endoporus that the machine oil flowed out from oil outlet 19 covers 27 through Oil Guide disperses the interior cooling chamber 25 of injection into pistion, to engine chamber bottom
Portion is cooled down, and then machine oil enters the outer cooling chamber 23 of piston through oil guiding hole 24, and, sidewall of combustion chamber cylindrical to piston crown enters
Row cooling, then machine oil flows to the external world through spill port 20, in the process, and the inside and outside chamber of piston is successively cooled down, by piston face temperature
Degree control in the reasonable scope, reduces the thermal expansion amount of piston, has evaded the risk that piston is bonded with cylinder jacket, has improved hair
The reliability of motivation.
The piston for the fabricated structure that a kind of engine of the present invention is cooled down with connecting rod lubrication and piston is cooled down and connected
Bar lubricates attachment means installation method：First piston is inverted, lain on platform, down, circlip 22 is filled for piston crown
In the annular groove for entering spring base 26, packing washer 28, spring 29 and supporting bead 30 are then sequentially loaded into, then slow loading is led
Oil jacket 27, when Oil Guide covers 27 intermediate journals loading 22 endoporus of circlip, the endoporus of circlip 22 is slowly strutted, when Oil Guide set
When 27 intermediate journals are entirely across circlip 22, complete to install.
Claims (1)
1. a kind of lubrication fabricated structure of engine piston connecting rod group, piston connecting rod unit includes piston, piston pin
（15）And connecting rod；The wrist-pin end of connecting rod of the connecting rod（13）Pass through piston pin（15）It is connected with described piston；Described piston pin
（15）With described wrist-pin end of connecting rod（13）Between be provided with wrist pin bush（14）；The connecting rod shank（1）Big end semicircle
Two semicircular upper connecting rod bearing shells are embedded in the semicircle orifice of hole and connecting rod cap respectively（32）With lower link bearing shell（3）, upper and lower company
Bar bearing shell is arranged on the rod journal of bent axle（2）On, and and rod journal（2）Gap coordinates, connecting rod shank（1）And connecting rod cap
（5）Pass through bolt（10）Connection；Described connecting rod shank（1）And connecting rod cap（5）On be respectively provided with and described bolt（10）Coordinate
Bolt hole, and described bolt（10）Coordinate with described bolt interporal lacuna；Described lubrication fabricated structure includes
There are connecting rod lubrication structure and piston cooling structure；Described connecting rod lubrication structure has the company being located at described in bent axle on rod journal
Bar axle journal oilhole（8）；Described rod journal oilhole（8）For the radial direction through hole on rod journal, and and diesel engine
Main oil gallery is communicated；Described lower link bearing shell（3）Internal face on there is the oil groove II that is communicated with rod journal oilhole（4）；Institute
State lower link bearing shell（3）Outside wall surface on have circumferential multiple radial direction oil-through-holes I（7）；Multiple described radial directions are led to
Oilhole I（7）The described oil groove II of connection（4）With oil groove III（6）；The oil groove III（6）For positioned at connecting rod cap（5）On internal face
Semi-circular groove, described oil groove III（6）Connect bolt（10）With the annular gap between described bolt hole, and bolt（10）With
The annular gap between bolt hole forms oil pocket（9）；Described oil pocket（9）Pass through the inclined oil hole of air on connecting rod shank（11）With
Straight oilhole on connecting rod shank（12）One end be connected；The inclined oil hole of air（11）Center line and connecting rod shank center line into
30 ° of angles；The straight oilhole（12）Center line overlapped with connecting rod shank center line；The straight oilhole（12）The other end and company
Oil groove I on bar small end（17）It is connected；Described oil groove I（17）For positioned at the annular groove at wrist-pin end of connecting rod endoporus center；It is described
Wrist pin bush（14）The upper radial direction oil-through-hole II with multiple 270 ° of circumference uniform distributions along wrist pin bush（16）；It is many
Individual described radial direction oil-through-hole II（16）With oil groove I（17）Communicate；The wrist pin bush（14）Internal face on have arc
Shape groove（18）, and the deep-slotted chip breaker（18）Radian be 270 °；Described deep-slotted chip breaker（18）Pass through multiple radial direction oil-through-holes II
(16) communicated with oil groove I (17)；The top of the wrist-pin end of connecting rod has oil outlet（19）, the oil outlet（19）Center line with
Connecting rod shank center line is overlapped；Described oil outlet（19）With described oil groove I（17）Communicate；
The wrist-pin end of connecting rod（13）Upper end be provided with to the Oil Guide set that is connected with piston cooling structure（27）；Described leads
Oil jacket（27）Centered on there is the stepped revolving body of oil inlet passage, the cylindrical of stepped revolving body have three multi-diameter shafts, on
End-journal is minimum, and intermediate journal is larger, and lower end journal is maximum, and intermediate journal uses arc transition with lower end journal；The ladder
The lower surface of shape revolving body is the cambered surface matched somebody with somebody with the periphery kissing of wrist-pin end of connecting rod；Oil Guide set（27）The oil-feed that center has is led to
Road is up-small and down-big and junction is the shoulder hole of conical surface transition；It is outer that the lower end of shoulder hole periphery extends out to Oil Guide set
The lower end of disc；Oil Guide set（27）The upper end axle journal on be equipped with spring（29）；The spring（29）Lower end pass through branch
Stake pad circle（30）It is supported on Oil Guide set（27）Upper cascaded surface on, the spring（29）Upper end and piston cooling structure spring
Seat（26）Contact, and in described spring base（26）With described spring（29）Between packing washer is set（28）, by described
Oil Guide set（27）By piston cooling structure and connecting rod lubrication fabric connectivity；Described spring base（26）To be arranged on piston skirt
The cylindrical boss of side；Cylindrical boss has up-small and down-big shoulder hole, and aperture and the Oil Guide of shoulder hole put end-journal gap and matched somebody with somebody
Close, the cylindrical gap that macropore covers intermediate journal with Oil Guide coordinates；Macropore lower end has to install circlip（22）Annular
Groove；The circlip（22）For cyclic structure, the diameter of bore of circlip is less than the outer diameter of a circle of Oil Guide set intermediate journal,
Before installing connecting rods, to prevent Oil Guide set from being slid from piston；
Described piston cooling structure has the interior cooling chamber that the spring base described in collar is set（25）；Described interior cooling chamber
（25）It is spherical loop configuration for top surface；Described Oil Guide set（27）Upper end outlet be located at described interior cooling chamber（25）
It is interior；The interior cooling chamber（25）Periphery be provided with outer cooling chamber（23）；Described outer cooling chamber（23）For up big and down small ring
Shape structure, and by along the circumferentially uniform multiple oil guiding holes of piston axis（24）It is connected with interior cooling chamber；The outer cooling chamber
（23）Lower section there is spill port（20）；The spill port（20）Positioned at piston skirt（31）On, spill port（20）One end with
Outer cooling chamber（23）Communicate, the other end is communicated with the external world.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510504408.7A CN105156171B (en) | 2015-08-18 | 2015-08-18 | A kind of lubrication fabricated structure of engine piston connecting rod group |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510504408.7A CN105156171B (en) | 2015-08-18 | 2015-08-18 | A kind of lubrication fabricated structure of engine piston connecting rod group |
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| CN105156171B true CN105156171B (en) | 2017-08-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107740861A (en) * | 2017-11-15 | 2018-02-27 | 南京世界村汽车动力有限公司 | A kind of structure of engine piston connecting rod group |
| CN111207002A (en) * | 2018-11-22 | 2020-05-29 | 强莉莉 | Piston |
| CN109723566A (en) * | 2019-02-28 | 2019-05-07 | 一汽解放汽车有限公司 | A kind of link assembly reducing piston heat load |
| CN110359995A (en) * | 2019-06-28 | 2019-10-22 | 广西玉柴机器股份有限公司 | A kind of linkage using the cooling piston of oil duct |
| CN110700929A (en) * | 2019-11-25 | 2020-01-17 | 中船动力有限公司 | Diesel engine piston cooling lubricating oil conveying device |
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| US7249577B1 (en) * | 2006-03-14 | 2007-07-31 | Gm Global Technology Operations, Inc. | Connecting rod with oil squirter |
| CN201771588U (en) * | 2010-07-12 | 2011-03-23 | 罗永林 | Piston cooling and lubricating system of motorcycle engine |
| CN102330584A (en) * | 2011-08-05 | 2012-01-25 | 无锡开普动力有限公司 | Cooling lubricating structure used for piston connection rod of reciprocating piston internal combustion engine |
| CN205013072U (en) * | 2015-08-18 | 2016-02-03 | 河南柴油机重工有限责任公司 | Lubrication and cooling composite structure of engine piston rod group |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2611232B1 (en) * | 1987-02-20 | 1991-08-30 | Melchior Jean | PISTON FOR INTERNAL COMBUSTION ENGINES AND SIMILAR MACHINES |
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2015
- 2015-08-18 CN CN201510504408.7A patent/CN105156171B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7249577B1 (en) * | 2006-03-14 | 2007-07-31 | Gm Global Technology Operations, Inc. | Connecting rod with oil squirter |
| CN201771588U (en) * | 2010-07-12 | 2011-03-23 | 罗永林 | Piston cooling and lubricating system of motorcycle engine |
| CN102330584A (en) * | 2011-08-05 | 2012-01-25 | 无锡开普动力有限公司 | Cooling lubricating structure used for piston connection rod of reciprocating piston internal combustion engine |
| CN205013072U (en) * | 2015-08-18 | 2016-02-03 | 河南柴油机重工有限责任公司 | Lubrication and cooling composite structure of engine piston rod group |
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| CN105156171A (en) | 2015-12-16 |
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