CN106979329A - A kind of all-steel piston - Google Patents
A kind of all-steel piston Download PDFInfo
- Publication number
- CN106979329A CN106979329A CN201710367864.0A CN201710367864A CN106979329A CN 106979329 A CN106979329 A CN 106979329A CN 201710367864 A CN201710367864 A CN 201710367864A CN 106979329 A CN106979329 A CN 106979329A
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- China
- Prior art keywords
- piston
- cooling chamber
- endosome
- ectosome
- steel
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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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
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/005—Pistons; Trunk pistons; Plungers obtained by assembling several pieces
-
- 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
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/09—Pistons; Trunk pistons; Plungers with means for guiding fluids
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention discloses a kind of all-steel piston, including piston ectosome and piston endosome, the piston endosome is sheathed on the inside of the piston ectosome, the cooling chamber circulated for coolant is provided with and the inner peripheral portion of the body beyond the Great Wall and the correspondence position of the piston endosome peripheral part are welded to connect, between the piston ectosome and the piston endosome.All-steel piston provided by the present invention, including two parts of the piston endosome and the piston ectosome, the piston endosome and the piston ectosome is integrally welded using the method for welding, the problem of complicated all-steel piston structure processing difficulties can effectively being solved, simultaneously, the piston is cooled down using the cooling chamber, effectively the possibility of reduction coolant coking.
Description
Technical field
The present invention relates to piston device field, more particularly to a kind of all-steel piston.
Background technology
All-steel piston is the cutting edge technology of current piston technology, and its structure is all thin-walled substantially, can be using monoblock cast, forging
The mode such as make, weld to be manufactured.
In the prior art, because the heat conductivility of all-steel piston is less than aluminum piston so that the temperature of its firepower bank and annular groove
Higher, the easy coking of coolant, in order to reduce the firepower bank of all-steel piston and the temperature of annular groove, reduces the possibility of coolant coking
Property, it is general that all-steel piston is cooled down by the way of in the inside of all-steel piston, cooling chamber is set.
However, due to setting cooling chamber that the internal structure of all-steel piston can be caused to complicate in the inside of all-steel piston, leading
The processing difficulties of cause all-steel piston, high processing costs, also, because the processing of cooling chamber can be subject to processing the limitation of mode, it is cold
But the structure design of chamber is limited by more, causes cooling effect general.In addition, cooling chamber of the prior art is, it is necessary to adopt
It is processed with special cutter, causes processing cost further to improve.
Therefore, the difficulty of processing of all-steel piston how is reduced, meanwhile, the cooling effectiveness of all-steel piston is improved, is this area
The current technical issues that need to address of technical staff.
The content of the invention
It is an object of the invention to provide a kind of all-steel piston, the all-steel piston can effectively reduce the difficult processing of itself
Degree, and it is possible to be applicable the processing of the cooling chamber of labyrinth, high in machining efficiency, cost is low.
To achieve the above object, the present invention provides following technical scheme：
A kind of all-steel piston, including piston ectosome and piston endosome, the piston endosome are sheathed on the piston ectosome
Inside, and the inner peripheral portion of the body beyond the Great Wall and the correspondence position of the piston endosome peripheral part be welded to connect, outside the piston
The cooling chamber circulated for coolant is provided between body and the piston endosome.
It is preferred that, the cooling chamber includes the first cooling of the axial direction distribution along the piston ectosome or the piston endosome
Chamber and the second cooling chamber, are split between first cooling chamber and second cooling chamber by oil pocket baffle plate.
It is preferred that, the weld part between the piston ectosome and the piston endosome is located at least in first cooling chamber
Side away from the oil pocket baffle plate is kept off close to one end of the piston endosome, and second cooling chamber away from the oil pocket
One middle side part of plate.
It is preferred that, the oil pocket baffle plate is fixedly arranged on the inner peripheral portion of the piston ectosome, and the piston ectosome and described
After piston endosome connection, the gap between the oil pocket baffle plate and the piston endosome is 0.01-0.02mm.
It is preferred that, it is welded to connect between the piston ectosome and the piston endosome by high-power electron beam.
It is preferred that, the piston ectosome is casting or the tubulose steel part piston ectosome forged.
It is preferred that, the piston ectosome is casting or the piston endosome forged.
It is preferred that, first cooling chamber is provided with the first fuel feed hole that first cooling chamber is flowed into for coolant, institute
The position away from first fuel feed hole on the first cooling chamber is stated to be provided with for described in coolant from first cooling chamber inflow
First oil outlet of the second cooling chamber.
It is preferred that, second cooling chamber is provided with the second fuel feed hole that second cooling chamber is flowed into for coolant, institute
State the position away from second fuel feed hole on the second cooling chamber and be provided with and the second of second cooling chamber is flowed out for coolant
Oil outlet.
It is preferred that, first fuel feed hole, second oil outlet, first oil outlet and the second fuel feed hole edge
After the axis projection of the piston ectosome or the piston endosome, along the piston ectosome or the piston endosome circumference successively
Arrange and be uniformly distributed.
All-steel piston provided by the present invention, including piston ectosome and piston endosome, the piston endosome are sheathed on described
The inside of piston ectosome, and the inner peripheral portion of the body beyond the Great Wall and the correspondence position of the piston endosome peripheral part be welded to connect,
The cooling chamber circulated for coolant is provided between the piston ectosome and the piston endosome.The all-steel piston, including the work
Two parts of body and the piston ectosome in plug, the piston endosome and the piston ectosome are welded into using the method for welding
One, the problem of can effectively solving complicated all-steel piston structure processing difficulties, meanwhile, the piston is carried out using the cooling chamber
The possibility of cooling, effectively reduction coolant coking.
In a preferred embodiment, the cooling chamber is included along the axial direction of the piston ectosome or the piston endosome
The first cooling chamber and the second cooling chamber of distribution, pass through oil pocket baffle plate point between first cooling chamber and second cooling chamber
Cut.Above-mentioned setting, using the dual-cooled effect of first cooling chamber and second cooling chamber, can be greatly lowered all steel
The temperature of piston, particularly reduces the temperature of annular groove, improves the service life of the all-steel piston.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of embodiment of all-steel piston provided by the present invention；
Fig. 2 is the structural representation of the piston ectosome of all-steel piston provided by the present invention；
Fig. 3 is the structural representation of the piston endosome of all-steel piston provided by the present invention；
Fig. 4 is the fuel feed hole of all-steel piston provided by the present invention and the arrangement schematic diagram of oil outlet；
Fig. 5 is the A-A cross-sectional views of all-steel piston shown in Fig. 4；
Fig. 6 is the B-B cross-sectional views of all-steel piston shown in Fig. 4；
Fig. 7 is the C-C cross-sectional views of all-steel piston shown in Fig. 4；
Fig. 8 is the D-D cross-sectional views of all-steel piston shown in Fig. 4；
Fig. 9 is the coolant flow direction schematic diagram in the first cooling chamber of all-steel piston provided by the present invention；
Figure 10 is the coolant flow direction schematic diagram in the second cooling chamber of all-steel piston provided by the present invention；
Wherein：1- pistons ectosome, 2- piston endosomes, the cooling chambers of 3- first, the fuel feed holes of 31- first, the oil outlets of 32- first,
The cooling chambers of 4- second, the fuel feed holes of 41- second, the oil outlets of 42- second, 5- oil pockets baffle plate, the weld parts of 6- first, 7- second are welded
Portion.
Embodiment
The core of the present invention is to provide a kind of all-steel piston, and the all-steel piston can effectively improve the cooling effect of itself,
Also, processing is simple, and cost is low, and using effect is good.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1 to Figure 10 is refer to, Fig. 1 is a kind of structural representation of embodiment of all-steel piston provided by the present invention
Figure；Fig. 2 is the structural representation of the piston ectosome of all-steel piston provided by the present invention；Fig. 3 is all steel provided by the present invention
The structural representation of the piston endosome of piston；Fig. 4 is the fuel feed hole of all-steel piston provided by the present invention and the arrangement of oil outlet
Structural representation；Fig. 5 is the A-A cross-sectional views of all-steel piston shown in Fig. 4；Fig. 6 is the B-B of all-steel piston shown in Fig. 4
Cross-sectional view；Fig. 7 is the C-C cross-sectional views of all-steel piston shown in Fig. 4；Fig. 8 is all-steel piston shown in Fig. 4
D-D cross-sectional views；Fig. 9 shows for the coolant flow direction in the first cooling chamber of all-steel piston provided by the present invention
It is intended to；Figure 10 is the coolant flow direction schematic diagram in the second cooling chamber of all-steel piston provided by the present invention.
In this embodiment, all-steel piston includes piston ectosome 1 and piston endosome 2, specifically, piston endosome 2 is arranged
In the inside of piston ectosome 1, and beyond the Great Wall, the inner peripheral portion of body and the correspondence position of the peripheral part of piston endosome 2 are welded to connect, piston
The cooling chamber circulated for coolant is provided between ectosome 1 and piston endosome 2.
Explanation is needed exist for, a part for cooling chamber is located on piston ectosome 1, and another part is located at piston endosome 2
On, after piston ectosome 1 and piston endosome 2 are connected, complete cooling chamber can be formed, cooling down all steel for coolant circulation lives
Plug.
The all-steel piston, including 1 two parts of piston endosome 2 and piston ectosome, piston endosome 2 and piston ectosome 1 are adopted
It is integrally welded with the method for welding, the problem of can effectively solving complicated all-steel piston structure processing difficulties, meanwhile, utilize cooling
Chamber is cooled down to the piston, effectively the possibility of reduction coolant coking.
Specifically, the all-steel piston in the present embodiment, using split-type structural, piston ectosome 1 can be using casting or forging
It is processed into tubulose steel part, piston endosome 2 can pass through forging molding or casting.Structure processing is simple, piston ectosome 1
It can be carried out in the range of certain cylinder diameter general.
On the basis of the respective embodiments described above, cooling chamber is included along the axial direction distribution of piston ectosome 1 or piston endosome 2
First cooling chamber 3 and the second cooling chamber 4, are split between the first cooling chamber 3 and the second cooling chamber 4 by oil pocket baffle plate 5.Need
Bright, cooling chamber can also be the larger cooling chamber of a volume, i.e. need not between the first cooling chamber 3 and the second cooling chamber 4
Oil pocket baffle plate 5 is set, also may be used directly as an overall cooling chamber.
Above-mentioned setting, using the dual-cooled effect of the first cooling chamber 3 and the second cooling chamber 4, can be greatly lowered all steel
The temperature of piston, particularly reduces the temperature of annular groove, improves the service life of the all-steel piston.
On the basis of the respective embodiments described above, the weld part between piston ectosome 1 and piston endosome 2 is located at least in
One side of the cooling chamber 3 away from oil pocket baffle plate 5 and one end of close piston endosome 2, and the second cooling chamber 4 is away from oil pocket baffle plate
5 middle side part.
Above-mentioned setting, after piston ectosome 1 and piston endosome 2 is machined respectively, in piston ectosome 1 and piston endosome 2
End, i.e., welded positioned at the side of the first cooling chamber 3 and close to the position of piston endosome 2 after whole circle, form the first weld part
6, by first connecting portion be arranged on the first side of the cooling chamber 3 away from oil pocket baffle plate 5 and close to piston endosome 2 one end, be for
Ensure the integrality of firepower bank, meanwhile, the length of weld seam can be reduced, weld interval and cost is saved.Second weld part 7
In a middle side part of second cooling chamber 4 away from oil pocket baffle plate 5, facilitate going deep into for welding gun, convenient processing.
Explanation is needed exist for, firepower bank is structure as a whole with piston ectosome 1, also, above-mentioned first cooling chamber 3 is located at
Piston ectosome 1 is located at the one end of piston ectosome 1 away from firepower bank close to one end of firepower bank, the second cooling chamber 4.
On the basis of the respective embodiments described above, oil pocket baffle plate 5 is fixedly arranged on the inner peripheral portion of piston ectosome 1, and outside piston
After body 1 and piston endosome 2 are connected, the gap between oil pocket baffle plate 5 and piston endosome 2 is 0.01-0.02mm, oil pocket baffle plate 5 with
Gap between piston endosome 2 is set, and can be prevented in welding process, oversized due to oil pocket baffle plate 5, causes piston
The distance between the link position of ectosome 1 and piston endosome 2 is excessive, influences the formation of weld seam.
Welded and connected by high-power electron beam on the basis of the respective embodiments described above, between piston ectosome 1 and piston endosome 2
Connect.High-power electron beam welding, which has fast energy density height, firing rate, welding heat affected zone and deforms small, parameter stability, to be reproduced
Property it is good, easily controllable and suitable for welding infusibility and the advantages of dissimilar metal.Certainly, preferred side is welded as using high-power electron beam
Case, on the basis of the structure provided using the present embodiment, other can also be used between piston ectosome 1 and piston endosome 2
Mode is welded to connect.
Specifically, above-mentioned coolant can be preferred to use the preferable machine oil of cooling effect.
On the basis of the respective embodiments described above, the first cooling chamber 3, which is provided with, flows into the of the first cooling chamber 3 for coolant
The position away from the first fuel feed hole 31 is provided with one fuel feed hole 31, the first cooling chamber 3 flows into for coolant from the first cooling chamber 3
First oil outlet 32 of the second cooling chamber 4.
Above-mentioned setting, coolant flows into the first cooling chamber 3 by the first fuel feed hole 31, is then flowing through whole first cooling chamber
After 3, by the position of the first oil outlet 32 away from the first fuel feed hole 31, flow into the second cooling chamber 4.
On the basis of the respective embodiments described above, the second cooling chamber 4, which is provided with, flows into the of the second cooling chamber 4 for coolant
The position away from the second fuel feed hole 41 is provided with two fuel feed holes 41, the second cooling chamber 4 flows out the second cooling chamber 4 for coolant
Second oil outlet 42.
Above-mentioned setting, coolant flows into the second cooling chamber 4 by the second fuel feed hole 41, is then flowing through whole second cooling chamber
After 4, by the position of the second oil outlet 42 away from the second fuel feed hole 41, flowed out from the second cooling chamber 4.Need exist for explanation
It is, the coolant flowed into the first cooling chamber 3 in second cooling chamber 4, again by the second oil outlet on the second cooling chamber 4
42 outflows.
On the basis of the respective embodiments described above, the first fuel feed hole 31, the second oil outlet 42, the first oil outlet 32 and second
After axis projection of the fuel feed hole 41 along piston ectosome 1 or piston endosome 2, arranged successively along the circumference of piston ectosome 1 or piston endosome 2
Arrange and be uniformly distributed.
In above-mentioned arrangement, in piston ectosome 1 or the axis projection of piston endosome 2, the first fuel feed hole 31 goes out with first
Oilhole 32 it is distant, the second oil outlet 42 and the second fuel feed hole 41 it is distant, be arranged such, coolant passes through first
The tube channel of fuel feed hole 31 enters the first cooling chamber 3, then enters the second cooling chamber 4 from the first oil outlet 32, fuel-displaced from second
Hole 42 returns to tank for coolant；Secondly, coolant enters the second cooling chamber 4 from the second fuel feed hole 41, then from the second oil outlet 42
Return to tank for coolant.
In the flow process of above-mentioned coolant, because the coolant flow direction of the first cooling chamber 3 and the second cooling chamber 4 is relative,
Form forced convertion and cool down all-steel piston repeatedly so that the temperature of all-steel piston is greatly lowered, the arrow in such as Fig. 9 and Figure 10
It is shown.
The all-steel piston that the present embodiment is provided, is divided into piston endosome and piston ectosome two parts, and adopt by all-steel piston
High-power electron beam welded structure is used, easy to process, intensity is high, and using effect is good, and processing can be greatly lowered in the piston structure
Difficulty, various complicated oil ducts, inner-cavity structure can be simply molded, and piston ectosome can be general in certain scope；Meanwhile, adopt
With the double oil duct cooling oil ducts of forced convertion, the temperature of all-steel piston, particularly annular groove temperature can be greatly lowered, is prevented effectively from cold
But liquid coking problem.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other
Between the difference of embodiment, each embodiment identical similar portion mutually referring to.
All-steel piston provided by the present invention is described in detail above.Specific case used herein is to this hair
Bright principle and embodiment is set forth, the explanation of above example be only intended to help to understand the present invention method and its
Core concept.It should be pointed out that for those skilled in the art, not departing from the premise of the principle of the invention
Under, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls into the protection of the claims in the present invention
In the range of.
Claims (10)
1. a kind of all-steel piston, it is characterised in that including piston ectosome (1) and piston endosome (2), piston endosome (2) set
Located at the inside of the piston ectosome (1), and the inner peripheral portion of the body beyond the Great Wall is corresponding with the piston endosome (2) peripheral part
Position is welded to connect, and the cooling chamber circulated for coolant is provided between the piston ectosome (1) and the piston endosome (2).
2. all-steel piston according to claim 1, it is characterised in that the cooling chamber is included along the piston ectosome (1)
Or the piston endosome (2) axial direction distribution the first cooling chamber (3) and the second cooling chamber (4), first cooling chamber (3) and
Split between second cooling chamber (4) by oil pocket baffle plate (5).
3. all-steel piston according to claim 2, it is characterised in that the piston ectosome (1) and the piston endosome (2)
Between weld part, be located at least in first cooling chamber (3) away from the oil pocket baffle plate (5) side in the piston
One end of body (2), and a middle side part of second cooling chamber (4) away from the oil pocket baffle plate (5).
4. all-steel piston according to claim 2, it is characterised in that the oil pocket baffle plate (5) is fixedly arranged on outside the piston
After the inner peripheral portion of body (1), and the piston ectosome (1) and the piston endosome (2) connection, the oil pocket baffle plate (5) and institute
It is 0.01-0.02mm to state the gap between piston endosome (2).
5. all-steel piston according to claim 2, it is characterised in that the piston ectosome (1) and the piston endosome (2)
Between be welded to connect by high-power electron beam.
6. all-steel piston according to claim 2, it is characterised in that the piston ectosome (1) is that casting or forging are formed
Tubulose steel part piston ectosome (1).
7. all-steel piston according to claim 2, it is characterised in that the piston ectosome (1) is that casting or forging are formed
Piston endosome (2).
8. the all-steel piston according to claim 2 to 7 any one, it is characterised in that set on first cooling chamber (3)
Have on the first fuel feed hole (31) that first cooling chamber (3) is flowed into for coolant, first cooling chamber (3) away from described the
The position of one fuel feed hole (31) is provided with flows into the of second cooling chamber (4) for coolant from first cooling chamber (3)
One oil outlet (32).
9. all-steel piston according to claim 8, it is characterised in that second cooling chamber (4) is provided with and supplies coolant
Flow on the second fuel feed hole (41) of second cooling chamber (4), second cooling chamber (4) away from second fuel feed hole
(41) position is provided with the second oil outlet (42) that second cooling chamber (4) is flowed out for coolant.
10. all-steel piston according to claim 9, it is characterised in that first fuel feed hole (31), described second fuel-displaced
Hole (42), first oil outlet (32) and second fuel feed hole (41) are along the piston ectosome (1) or the piston endosome
(2) after axis projection, it is arranged in order and is uniformly distributed along the circumference of the piston ectosome (1) or the piston endosome (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710367864.0A CN106979329A (en) | 2017-05-23 | 2017-05-23 | A kind of all-steel piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710367864.0A CN106979329A (en) | 2017-05-23 | 2017-05-23 | A kind of all-steel piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106979329A true CN106979329A (en) | 2017-07-25 |
Family
ID=59342501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710367864.0A Pending CN106979329A (en) | 2017-05-23 | 2017-05-23 | A kind of all-steel piston |
Country Status (1)
| Country | Link |
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| CN (1) | CN106979329A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109877532A (en) * | 2018-11-30 | 2019-06-14 | 中国第一汽车股份有限公司 | A kind of processing method of split type planet carrier assembly |
| CN110486180A (en) * | 2017-08-29 | 2019-11-22 | 熵零技术逻辑工程院集团股份有限公司 | A kind of piston |
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| CN101365559A (en) * | 2006-01-21 | 2009-02-11 | Ks科尔本施密特有限公司 | Cooling duct piston for an internal combustion engine |
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| US20130068094A1 (en) * | 2009-12-23 | 2013-03-21 | Federal-Mogul Corporation | Piston, Method of Construction, and Piston Body Portions Thereof |
| CN203604062U (en) * | 2010-12-24 | 2014-05-21 | 马勒国际公司 | Piston for an internal combustion engine |
| US20160061326A1 (en) * | 2012-08-23 | 2016-03-03 | Ks Kolbenschmidt Gmbh | Joined connection on a two-piece steel piston and joining method |
| CN105986923A (en) * | 2015-02-09 | 2016-10-05 | 强哲菲 | Steel piston with double oil chambers and machining method thereof |
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| CN101365559A (en) * | 2006-01-21 | 2009-02-11 | Ks科尔本施密特有限公司 | Cooling duct piston for an internal combustion engine |
| CN101265854A (en) * | 2007-07-20 | 2008-09-17 | 山东滨州渤海活塞股份有限公司 | Laser welding forged steel integral piston with closed inner-cooling oil recess and its fabrication process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486180A (en) * | 2017-08-29 | 2019-11-22 | 熵零技术逻辑工程院集团股份有限公司 | A kind of piston |
| CN109877532A (en) * | 2018-11-30 | 2019-06-14 | 中国第一汽车股份有限公司 | A kind of processing method of split type planet carrier assembly |
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Application publication date: 20170725 |