CN209228482U - Piston - Google Patents
Piston Download PDFInfo
- Publication number
- CN209228482U CN209228482U CN201821784032.5U CN201821784032U CN209228482U CN 209228482 U CN209228482 U CN 209228482U CN 201821784032 U CN201821784032 U CN 201821784032U CN 209228482 U CN209228482 U CN 209228482U
- Authority
- CN
- China
- Prior art keywords
- piston
- groove
- annular groove
- cast iron
- sidewall
- Prior art date
- 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.)
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Links
- 229910001018 Cast iron Inorganic materials 0.000 claims abstract description 31
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 230000004580 weight loss Effects 0.000 claims abstract description 10
- 239000000178 monomer Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 8
- 239000003921 oil Substances 0.000 abstract description 13
- 230000006835 compression Effects 0.000 abstract description 6
- 238000007906 compression Methods 0.000 abstract description 6
- 239000010705 motor oil Substances 0.000 abstract description 5
- 238000002485 combustion reaction Methods 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- 239000010721 machine oil Substances 0.000 description 7
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 239000000567 combustion gas Substances 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241000196259 Ulva pertusa Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses a kind of pistons, the piston includes piston main body, the head of the piston main body is provided with circumferential slot, the cast iron ring carrier of monomer is cast into circumferential slot, cast iron ring carrier is provided with the first annular groove, the second annular groove and the second ring bank between the first annular groove and the second annular groove, first annular groove and the second annular groove are used to install compression ring, and the second ring bank is provided with relief groove, and relief groove is arranged along the circumferencial direction complete cycle of piston and has the open notch of radial outside towards piston.There is weight loss groove on the downside of piston main body.Cast iron ring carrier radially inner side has the interior oil cooling passage of annular.The piston ability with higher for bearing pinking, and there is lesser air leak amount and engine oil consumption.
Description
Technical field
The utility model relates to technical field of engines more particularly to a kind of pistons.
Background technique
Piston is the important component of engine, and the gas push piston that the fuel combustion of engine generates does past in cylinder
Moving again and generating mechanical energy is used in people.
Top land forms a part of combustion chamber, and fuel burns in the combustion chamber, the gas that piston is generated in fuel combustion
It is moved back and forth under the action of body, piston bears high temperature and high pressure in this process.
Piston crown is formed with annular groove, is equipped with piston ring in annular groove, for preventing high temperature, high-pressure gas from scurrying into crankshaft
Case, while machine oil being prevented to scurry into combustion chamber.The heat that top land is absorbed largely also will be transmitted to cylinder by piston crown.
Three annular grooves are arranged in the piston of general gasoline engine, and the twice annular groove close to top land is for installing compression ring, to prevent high temperature
High-pressure gas scurries into crankcase, and one of annular groove farthest away from top land is used to install oil ring, to prevent machine oil from scurrying into combustion chamber.
Existing piston is generally made of aluminum alloy materials, when piston moves reciprocatingly, piston ring continually with ring
Slot is hit and friction, this easilys lead to, and annular groove is impaired, and the maximum outbreak pressure (ability for bearing pinking) that piston is born
Limited, furthermore when reciprocating motion of the pistons, indoor combustion gas of burning may be altered downwards, and machine oil may also be between piston and casing wall
Formation slot leakage.
In this regard, as shown in Figure 1, existing a solution is: abrasion-proof inserted ring 3 is cylinder iron manufactured, in casting piston
By 3 castingin of abrasion-proof inserted ring into the annular groove 2 of piston crown 1, the other parts of piston are still made of aluminum alloy materials.
The above-mentioned prior art has the following deficiencies:
The ability that piston bears pinking is still poor, and the whole service life of piston is shorter, the air leak amount and machine oil of piston
It consumes larger.
Utility model content
The purpose of this utility model is to provide a kind of piston, the ability with higher for bearing pinking, and have
Lesser air leak amount and engine oil consumption.
To achieve the above object, the disclosure provides a kind of piston, and the piston includes piston main body, the piston main body
Head is provided with circumferential slot, and the cast iron ring carrier of monomer is cast into the circumferential slot, and the cast iron ring carrier is provided with the first ring
Slot, the second annular groove and the second ring bank between first annular groove and the second annular groove, first annular groove and described
Two annular grooves are for installing compression ring, and the second ring bank is provided with relief groove, and the relief groove is whole along the circumferencial direction of the piston
It is arranged in week and there is the open notch of radial outside towards the piston.
Preferably, the relief groove has close to the first groove sidewall of first annular groove and close to second annular groove
The angle of second groove sidewall, first groove sidewall and the piston being formed radially is less than second groove sidewall and the work
The angle of plug being axially formed.
Preferably, first groove sidewall and the angle for being formed radially -5 degree to 5 degree, second groove sidewall and institute
It states and is axially formed 10 degree to 60 degree of angle, the radially outward flaring of the opening of the relief groove along the piston.
Preferably, second groove sidewall and the angle for being axially formed 30 degree to 50 degree.
Preferably, it is connected with groove bottom wall between first groove sidewall and second groove sidewall, in the axis of the piston
Into section, the groove bottom wall is arc-shaped, and the radius of the circular arc is 0.2mm to 1.5mm.
Preferably, the lower axial end of the radial outer end of first groove sidewall and first annular groove along it is described it is axial away from
From for 0.3mm to 3.0mm.
Preferably, the head of the piston main body is additionally provided with the third annular groove positioned at the axial downside of the circumferential slot.
Preferably, the piston main body has weight loss groove, and there is the weight loss groove the axial downside towards the piston to open wide
Notch.
Preferably, the piston main body has the interior oil cooling passage of annular, and the interior oil cooling passage is located at the cast iron ring carrier
Radially inner side.
Preferably, the cast iron ring carrier is made of austenitic cast iron material.
Technical solution provided by the present disclosure can be realized following technical effect:
Second ring bank is all formed by cast iron ring carrier, and relief groove is set to the second ring bank and encloses with casing wall corresponding with piston
At pressure reduction space, relief groove also can have biggish pressure reduction space, can alleviate combustion gas well in the first annular groove
Compression ring ejection, improve the leakproofness between piston and casing wall, to reduce the gas quantity and engine oil consumption for scurrying into combustion chamber, and
And improve the ability that piston bears pinking.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the disclosure
Example, and together with specification for explaining the principles of this disclosure.
Fig. 1 is the partial sectional view of existing piston；
Fig. 2 is the partial sectional view for the piston that the disclosure provides；
Fig. 3 is the first annular groove in Fig. 2 and the partial sectional view at the second annular groove.
Description of symbols:
1 piston crown
2 annular grooves
3 abrasion-proof inserted rings
10 piston main bodies
11 heads
12 skirt sections
13 cast iron ring carriers
111 first annular grooves
112 second annular grooves
113 third annular grooves
114 second ring banks
Oil cooling passage in 115
116 relief grooves
1161 first groove sidewalls
1162 second groove sidewalls
1163 groove bottom walls
117 weight loss grooves.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all implementations consistent with this disclosure.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects be described in detail in claims, the disclosure.
As shown in Figures 2 and 3, the utility model provides a kind of piston, which has piston main body 10, piston main body 10
With head 11 and skirt section 12, head 11 is provided with circumferential slot, and circumferential slot is arranged along the circumferencial direction complete cycle of piston, in circumferential slot
It is cast into the cast iron ring carrier 13 of monomer, is formed in circumferential slot to 13 complete cycle of cast iron ring carrier.
Cast iron ring carrier 13 is formed with the first annular groove 111 and the second annular groove 112, in the close piston crown of the first annular groove 111
11 side is formed with apical ring bank, and the second ring bank 114 is formed between the first annular groove 111 and the second annular groove 112.First annular groove
111, the second annular groove 112 and the second ring bank 114 are formed around the circumferencial direction complete cycle of piston.First annular groove 111 and the second annular groove
112 be compression.Second ring bank 114 is provided with relief groove 116 along the circumferential complete cycle of piston, and the relief groove 116 is towards piston
Radial outside opens wide to form the notch opposite with casing wall.
In this way, relief groove 116 and casing wall corresponding with piston surround pressure reduction space, which can alleviate combustion gas pair
The ejection of compression ring in the first annular groove 111 improves the leakproofness between piston and casing wall, scurries into combustion chamber to reduce
Gas quantity and engine oil consumption.
Piston main body 10 is provided with the third annular groove 113 positioned at the axial downside of circumferential slot, and third annular groove 113 is oil ring
Slot forms third ring bank between third annular groove 113 and the second annular groove 112, only only a part is cast iron materials to third ring bank.
In the prior art, a part of the second ring bank of piston is cast iron materials and another part is aluminum alloy materials,
In the disclosure, the cast iron ring carrier whole embedding of piston is in circumferential slot to form the first whole annular groove 111, the second annular groove
112 and the second ring bank 114 in this way, the first annular groove 111, the second annular groove 112 and the second ring bank 114 have biggish intensity work as work
When plug ring contacts friction with each annular groove, each annular groove is able to bear the collision and friction of higher intensity, and piston is able to bear higher
Detonation pressure, Ulva Pertusa ability is strong, and the service life is longer for piston.
Since the docking of aluminum alloy materials and cast iron materials being not present in the first annular groove 111 and the second ring bank 114, this
Sample will not be if prior art General Influence cast iron ring carrier 13 is in the first ring when relief groove 116 is arranged in the second ring bank 114
It is depressurized with the combination of piston main body 10 so as to guarantee the bond strength of cast iron ring carrier 13 Yu piston main body 10 at slot 111
The processing and manufacturing of slot 116 influences the Percentage bound of cast iron ring carrier 13 smaller, additionally it is possible to which it is empty to provide biggish installation for relief groove 116
Between to forming biggish pressure reduction space, preferably reduce air leak amount and engine oil consumption.
In a further embodiment, relief groove 116 have the first groove sidewall 1161 and the second groove sidewall 1162, first
Groove sidewall 1161 is close to the first annular groove 111, and the second groove sidewall 1162 is close to the second annular groove 112, the second groove sidewall 1162 and first
Groove bottom wall 1163 is connected between groove sidewall 1161, in the axial cross section of piston as shown in Figure 3,1161 He of the first groove sidewall
The generally linear shape of second groove sidewall 1162.First groove sidewall 1161 is formed radially the first angle, the second groove sidewall with piston
1162 are axially formed the second angle with piston, and the first angle is less than the second angle.
When piston moves reciprocatingly, the first groove sidewall 1161 and the second groove sidewall 1162 are contacted with casing wall and are each served as
Effect from casing wall frizing and to casing wall cloth oil, for example, the first groove sidewall 1161 is scraped from casing wall when piston moves from top to bottom
Oil, the oil being scraped are fallen within relief groove 116, when piston (for convenience, will be close to piston crown from bottom to up herein
11 direction definition is top, and the direction definition that will be close to piston skirt 12 is lower section) movement when, the second groove sidewall 1162 is to cylinder
Wall cloth oil.
In this embodiment, relief groove 116 can not only play depressurization, the first groove sidewall 1161 of relief groove 116
It can also implement frizing and cloth oil well with the second groove sidewall 1162.
Preferably, above-mentioned first angle can be -5 degree to 5 degree, and the second angle can be 10 degree to 60 degree, also, depressurize
Radially outward flaring of the opening of slot 116 along piston.
It should be noted that the first groove sidewall 1161 relative to piston radial direction in the axial direction incline upward when, the first angle
With positive angle；First groove sidewall 1161 relative to piston radial direction in the axial direction downside inclination when, the first angle has negative
Angle.
Such shape is conducive to relief groove 116 from casing wall frizing, and contains the machine oil scraped off, and machine oil is applied
It is distributed in casing wall.
It is highly preferred that the angle for being axially formed 30 degree to 50 degree of the second groove sidewall 1162 and piston.
It is highly preferred that in the axial cross section of piston, groove bottom wall 1163 can be it is arc-shaped, the circular arc of groove bottom wall 1163
Radius is 0.2mm to 1.5mm.
In this way, groove bottom wall 1163 is able to bear powerful gas pressure without damaging.
In one embodiment, (i.e. diameter is outside for outer end of first groove sidewall 1161 with the radial outside positioned at piston
End), the first annular groove 111 has lower end (the i.e. lower slot of lower axial end or the first annular groove 111 positioned at the axial downside of piston
Wall), the lower axial end of the radial outer end of the first groove sidewall 1161 and the first annular groove 111 is along the axial distance of piston
0.3mm to 3.0mm.The distance may insure the intensity of the first annular groove 111 not less than 0.3mm, which is not more than 3.0mm can be with
Ensure the effect of easing stress of relief groove 116, the piston in the present embodiment had not only had good effect of easing stress but also had good
One annular groove intensity.
In yet another embodiment, piston has weight loss groove 117, and weight loss groove 117 can be set in the head of piston 11
Bottom surface to have the axial open notch in downside towards piston.
Weight loss groove 117 can be arranged along the circumferential complete cycle of piston, or several pits of scattering device.
It is arranged after the weight loss groove 117, the material on the head 11 of piston is reduced, this can be reduced as far as the weight of piston
Amount, even if the second ring bank 114 is all using cast iron materials, piston will not be too heavy, meets lightweight demand.
In yet another embodiment, the interior oil cooling passage 115 that also there is piston the circumferencial direction around piston to be formed as annular,
The interior oil cooling passage 115 be located at cast iron ring carrier 13 radially inner side and close to cast iron ring carrier 13 be arranged, i.e., close to the second ring bank 114,
First annular groove 111 and the setting of the second annular groove 112.In other words, in terms of the projection of radial direction, interior oil cooling passage 115 and cast iron ring carrier
13 is least partially overlapped.
Machine oil concussion can improve the reliability of piston and durable in cooling cavity to which piston temperature be greatly lowered
Property.
Above-mentioned cast iron ring carrier 13 can be formed using austenitic cast iron material.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to its of the disclosure
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the disclosure, these modifications, purposes or
Person's adaptive change follows the general principles of this disclosure and including the undocumented common knowledge in the art of the disclosure
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the disclosure are by appended
Claim is pointed out.
It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and
And it can carry out various modifications and change in the case where without departing from the scope.The scope of the present disclosure is only by the attached claims
To limit.
Claims (10)
1. a kind of piston, the piston includes piston main body, and the head of the piston main body is provided with circumferential slot, and feature exists
In, be cast into the cast iron ring carrier of monomer in the circumferential slot, the cast iron ring carrier be provided with the first annular groove, the second annular groove and
The second ring bank between first annular groove and the second annular groove, first annular groove and second annular groove are for installing gas
Ring, the second ring bank are provided with relief groove, and the relief groove is arranged along the circumferencial direction complete cycle of the piston and has court
The open notch of the radial outside of the piston.
2. piston according to claim 1, which is characterized in that the relief groove has first close to first annular groove
Second groove sidewall of groove sidewall and close second annular groove, the angle of first groove sidewall and the piston being formed radially
Less than the angle of second groove sidewall and the piston being axially formed.
3. piston according to claim 2, which is characterized in that first groove sidewall and -5 degree that are formed radially are to 5
The angle of degree, second groove sidewall and the angle for being axially formed 10 degree to 60 degree, the opening of the relief groove is along described
The radially outward flaring of piston.
4. piston according to claim 3, which is characterized in that second groove sidewall is axially formed 30 degree to 50 with described
The angle of degree.
5. piston according to claim 2, which is characterized in that connect between first groove sidewall and second groove sidewall
Be connected to groove bottom wall, in the axial cross section of the piston, the groove bottom wall is arc-shaped, the radius of the circular arc be 0.2mm extremely
1.5mm。
6. piston according to claim 2, which is characterized in that the radial outer end of first groove sidewall and first ring
The lower axial end of slot is 0.3mm to 3.0mm along the axial distance.
7. piston according to claim 1, which is characterized in that the head of the piston main body was additionally provided with positioned at the week
To the third annular groove of the axial downside of slot.
8. piston according to claim 1, which is characterized in that the piston main body has weight loss groove, the weight loss groove tool
There is the axial open notch in downside towards the piston.
9. piston according to claim 1, which is characterized in that the piston main body has the interior oil cooling passage of annular, described
Interior oil cooling passage is located at the radially inner side of the cast iron ring carrier.
10. piston according to claim 1, which is characterized in that the cast iron ring carrier is made of austenitic cast iron material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821784032.5U CN209228482U (en) | 2018-10-31 | 2018-10-31 | Piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821784032.5U CN209228482U (en) | 2018-10-31 | 2018-10-31 | Piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209228482U true CN209228482U (en) | 2019-08-09 |
Family
ID=67501371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821784032.5U Active CN209228482U (en) | 2018-10-31 | 2018-10-31 | Piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209228482U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111140397A (en) * | 2019-12-24 | 2020-05-12 | 潍柴动力股份有限公司 | Engine piston and engine |
| CN112901364A (en) * | 2021-02-02 | 2021-06-04 | 马勒汽车技术（中国）有限公司 | Piston for engine |
| CN112943925A (en) * | 2021-01-27 | 2021-06-11 | 马勒汽车技术（中国）有限公司 | Piston ring |
-
2018
- 2018-10-31 CN CN201821784032.5U patent/CN209228482U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111140397A (en) * | 2019-12-24 | 2020-05-12 | 潍柴动力股份有限公司 | Engine piston and engine |
| CN112943925A (en) * | 2021-01-27 | 2021-06-11 | 马勒汽车技术（中国）有限公司 | Piston ring |
| CN112943925B (en) * | 2021-01-27 | 2023-01-20 | 马勒汽车技术（中国）有限公司 | Piston ring |
| CN112901364A (en) * | 2021-02-02 | 2021-06-04 | 马勒汽车技术（中国）有限公司 | Piston for engine |
| CN112901364B (en) * | 2021-02-02 | 2022-03-29 | 马勒汽车技术（中国）有限公司 | Piston for engine |
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