CN109653894A - A kind of piston component and the internal combustion engine with it - Google Patents
A kind of piston component and the internal combustion engine with it Download PDFInfo
- Publication number
- CN109653894A CN109653894A CN201710933599.8A CN201710933599A CN109653894A CN 109653894 A CN109653894 A CN 109653894A CN 201710933599 A CN201710933599 A CN 201710933599A CN 109653894 A CN109653894 A CN 109653894A
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- China
- Prior art keywords
- piston
- piston ring
- opening
- open slot
- ring
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Classifications
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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
-
- 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
- F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The present invention provides a kind of piston component and the internal combustion engine with it, and piston component includes: piston, and circumferentially arranged with open slot, open slot includes the bottom wall extended along piston axis direction and the side wall extended along piston radial；First piston ring is formed as annular and is sheathed in open slot, and first piston ring is equipped with the first opening；Second piston ring is formed as annular and is set in open slot on the axis direction of piston close to first piston ring set, and second piston ring is equipped with the second opening, and the first opening is not connected to the second opening；Elastic plate mechanism is formed as annular and is sheathed in open slot.Piston component according to an embodiment of the present invention, the structure combined using first piston ring, second piston ring and elastic plate mechanism, it can will solve the problems, such as blow-by of piston, not only have structure simple, the advantages that at low cost, good manufacturability easy to process, traditional twice compression ring can also be merged at one, thus the weight for reducing the height of piston, reducing piston.
Description
Technical field
The present invention relates to combustion engine manufacture technical fields, more particularly to a kind of piston component and in the piston component
Combustion engine.
Background technique
Piston air leakage is often referred to engine during the work time, and the flow of the gas escaped out out of cylinder works as piston
It will lead to the deterioration of engine power performance, economy and discharge index when air leakage is excessive.
The most important source of piston air leakage is the back clearance sideshake gas leakage of piston-cylinder ring and gap-clearance of piston rings gas leakage.
Existing technology is principally motivated in addressing opening gas leakage.Such as the combined type of Patent No. CN89210639.5 is continuously
The overlapped piston-ring sealing device of gap piston ring and Patent No. CN89214243.x solve only or are dedicated to solving opening leakage
Gas, for sideshake back clearance without solution；The Multifunction combination sealing device of Patent No. CN89213640.5 uses baffle
Mechanism sealing, but baffle both ends are still leaking source；The sealing device for open clearence of piston ring essence of patent No. CN2098596U is
Increase sealing device in gap-clearance of piston rings, but thus bring new problem: firstly, the gas leakage of sideshake back clearance is without essential solution party
Case；Secondly, positioning mechanism, which greatly destroys piston structure, reduces intensity；Again, which is bonded with cylinder holes, needs
High machining accuracy causes craftsmanship poor.
Summary of the invention
In view of this, the present invention provides a kind of piston component.
The present invention also provides a kind of internal combustion engines with the piston component.
In order to solve the above technical problems, the invention adopts the following technical scheme:
The piston component of embodiment according to a first aspect of the present invention, comprising:
Piston, for the piston circumferentially arranged with open slot, the open slot includes extending along the piston axis direction
Bottom wall and along the piston radial extend side wall；
First piston ring, the first piston annular become annular and are sheathed in the open slot, the first piston
Ring is equipped with the first opening；
Second piston ring, the second piston annular become annular and on the axis direction of the piston close to described the
One piston ring set is set in the open slot, and the second piston ring is equipped with the second opening, first opening and described the
Two openings are not connected to；
Elastic plate mechanism is formed as annular and is sheathed in the open slot, and it is living that the elastic plate mechanism is set to described second
Between plug ring and the side wall of the open slot, the elastic plate mechanism is open equipped with third.
Further, first opening is with second opening at circumferentially-spaced 180 ° of the piston.
Further, the groove bottom wall of the open slot is set as inclined-plane.
Further, the inner wall of the first piston ring is set as inclined-plane and is close to the bottom wall of the open slot.
Further, the inner wall of the second piston ring is set as inclined-plane and is close to the bottom wall of the open slot.
Further, the inner wall of the elastic plate mechanism is set as inclined-plane and is close to the bottom wall of the open slot.
Further, the elastic plate mechanism includes:
First support plate, first support plate are connect with the lower end surface of the second piston ring；
Second support plate, second support plate are connect with the opening groove sidewall；
Elastic layer, the elastic layer are set between first support plate and the second support plate.
Further, it is hourglass shape that the elastic layer, which is formed as cross section,.
Further, the first piston ring is equipped with retention Hp, and the retention Hp cooperation is in second opening and institute
It states in third opening.
The internal combustion engine of embodiment includes the piston component according to above-described embodiment according to a second aspect of the present invention.
Above-mentioned technical proposal of the present invention has the beneficial effect that:
Piston component according to an embodiment of the present invention, by using first piston ring, second piston ring and elastic plate mechanism phase
In conjunction with structure, make back clearance and communicate opening and be not present, to achieve the purpose that solve the problems, such as blow-by of piston, implement according to the present invention
The piston component of example has the advantages that 1) under the elastic force effect of suitable elastic mechanism, under the premise of not considering that machine adds precision,
Blow-by of piston is theoretically not present using the internal combustion engine of the piston component, optimization is made even to cancel crankcase ventilation system, labyrinth
Structure becomes possibility, and provides great benefit to emission performance, Engine Downsizing, lightweight；2) since piston component has
The leakproofness having had, the dynamic property and economy of engine are slightly improved, and machine oil service life is greatly improved；3) it ties
Structure is simple, at low cost, good manufacturability easy to process；4) traditional twice compression ring is merged at one, so that piston eliminates two
Ring bank is conducive to promote economy to reduce depth pistion, reduce piston weight to achieve the purpose that reduce reciprocating mass.
Detailed description of the invention
Fig. 1 is the back clearance sideshake gas leakage schematic diagram of the piston component of the prior art；
Fig. 2 is the enlarged drawing of a-quadrant in Fig. 1；
Fig. 3 is the opening gas leakage schematic diagram of the piston component of the prior art；
Fig. 4 is the sideshake and back clearance schematic diagram of the piston component of the prior art；
Fig. 5 is the structural schematic diagram of the piston component of the embodiment of the present invention；
Fig. 6 is the structural schematic diagram of the first piston ring of the embodiment of the present invention, second piston ring and elastic plate mechanism；
Fig. 7 is the elastic mechanism nature schematic diagram of the embodiment of the present invention；
Fig. 8 is the elastic mechanism compressive state schematic diagram of the embodiment of the present invention.
Appended drawing reference:
Piston component 100；
Piston 10；Open slot 11；Bottom wall 12；Side wall 13；
First piston ring 20；First opening 21；Retention Hp 22；
Second piston ring 30；Second opening 31；
Elastic plate mechanism 40；Third opening 41；First support plate 42；Second support plate 43；Elastic layer 44.
Cylinder wall 50；
Piston ring 60；4th opening 61.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
Attached drawing, the technical solution of the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is this hair
Bright a part of the embodiment, instead of all the embodiments.Based on described the embodiment of the present invention, ordinary skill
Personnel's every other embodiment obtained, shall fall within the protection scope of the present invention.
The present invention is present inventor based on the fact that and innovation and creation made by discovery.
Piston air leakage is often referred to engine during the work time, and the flow of the gas escaped out out of cylinder works as piston
The excessive deterioration that will lead to engine power performance, economy and discharge index of air leakage.
There are two the most important sources of piston air leakage: back clearance sideshake gas leakage (as depicted in figs. 1 and 2) and opening gas leakage
(as shown in Figure 3).
Wherein Fig. 2 designates the cylinder interior gas direction in back clearance sideshake venting process by arrow, and Fig. 3 passes through arrow mark
The cylinder interior gas direction in opening venting process is illustrated, the opening of Cong Yi tetra- 61 flows to another the 4th opening communicated therewith
61。
As shown in the region C in Fig. 4, after the sideshake of piston ring 60 refers to loading piston, the end face of piston ring 60 and piston
Gap (axial direction) between annular groove, as shown in the B area in Fig. 4, after back clearance refers to that piston and rings 60 are packed into cylinder, in work
Gap (tangential) between 60 back of plug ring and piston ring groove bottom.
Based on this, present inventor obtains following innovation and creation by studying for a long period of time and finding.
Piston component 100 according to an embodiment of the present invention is specifically described in conjunction with attached drawing first below.
As shown in Figure 5 and Figure 6, piston component 100 according to an embodiment of the present invention include piston 10, first piston ring 20,
Second piston ring 30 and elastic plate mechanism 40.
Specifically, piston 10, circumferentially arranged with open slot 11, open slot 11 includes extending along 10 axis direction of piston
Bottom wall 12 and the side wall 13 that is radially extended along piston 10, first piston ring 20 be formed as annular and be sheathed on open slot 11
In, first piston ring 20 is equipped with the first opening 21, and second piston ring 30 is formed as annular and on the axis direction of piston 10
It is sheathed in open slot 11 close to first piston ring 20, second piston ring 30 is equipped with the second opening 31, the first opening 21 and the
Two openings 31 are not connected to, and elastic plate mechanism 40 is formed as annular and is sheathed in open slot 11, and elastic plate mechanism 40 is set to second piston
Between ring 30 and the side wall 13 of open slot 11, elastic plate mechanism 40 is equipped with third opening 41.
In other words, piston component 100 according to an embodiment of the present invention, it is mainly living by piston 10, first piston ring 20, second
Plug ring 30 and elastic plate mechanism 40 form, and piston 10 is formed as piston ring groove circumferentially arranged with open slot 11, open slot 11, is being open
Elastic plate mechanism 40, second piston ring 30 and first piston ring 20, and elastic plate mechanism 40, second are provided, in sequence from bottom to top, in slot 11
Piston ring 30 and first piston ring 20 are located between the side wall 13 that two of open slot 11 radially extend along piston 10.Wherein,
Elastic plate mechanism 40, second piston ring 30 and first piston ring 20 are annular, and third opening 41 is equipped on elastic plate mechanism 40,
First piston ring 20 be equipped with first opening 21, on second piston ring 30 be equipped with second opening 31, wherein first opening 21 with
The problem of second opening 31 is not connected to, can alleviate blow-by of piston.Also, it can be made by providing elastic force by elastic plate mechanism 40
First piston ring 20 and second piston ring 30 are axially close to always, and there is no the open areas communicated.
Piston component 100 according to an embodiment of the present invention as a result, by using piston 10 and first piston ring 20, second
The device that piston ring 30 and elastic plate mechanism 40 are combined by being connected to the first opening 21 not with the second opening 31, and passes through
Elastic plate mechanism 40 makes first piston ring 20 and second piston ring 30 are axial to be always close to, and traditional twice compression ring is merged one
Place, so that piston 10 eliminates two ring banks, to reduce the height of piston 10, reduce the weight of piston 10 to reach reduction back and forth
The purpose of quality not only contributes to promote economy, and the problem of blow-by of piston can be effectively relieved, with excellent sealing
Property, and improving the dynamic property of engine and economy slightly, the service life of machine oil can also be greatly improved.
According to one embodiment of present invention, the first opening 21 is with the second opening 31 in the circumferentially-spaced of piston 10
180 °, by ensuring that piston 10 is not connected in reciprocal first opening 21 in the process with the second opening 31, and then gas leakage is effectively relieved
Problem.
In certain specific embodiments of the invention, the groove bottom wall 12 of open slot 11 is set as inclined-plane.
Further, the inner wall of first piston ring 20 is set as inclined-plane and is close to the bottom wall 12 of open slot 11.
Further, the inner wall of second piston ring 30 is set as inclined-plane and is close to the bottom wall 12 of open slot 11.
It should be noted that first piston ring 20, second piston ring 30 are tangentially bonded with groove bottom wall 12 respectively, avoid generating
Back clearance reduces sideshake back clearance gas leakage situation.
According to one embodiment of present invention, the inner wall of elastic plate mechanism 40 is set as inclined-plane and is close to the bottom wall of open slot 11
12, avoid the gas leakage situation as caused by back clearance.
As shown in Figure 7 and Figure 8, in certain specific embodiments of the invention, elastic plate mechanism 40 includes the first support plate
42, the second support plate 43 and elastic layer 44.
Specifically, the first support plate 42 is connect with the lower end surface of second piston ring 30, the second support plate 43 and open slot
The connection of 11 side walls 13, elastic layer 44 are set between the first support plate 42 and the second support plate 43.
Optionally, it is hourglass shape that elastic layer 44, which is formed as cross section,.
It should be noted that in 10 uplink process of piston (compression, exhaust), first piston ring 20, second piston ring 30
Under the axial elastic force effect of elastic plate mechanism 40, with the uplink together of piston 10, first is ensured by the axial elastic force of elastic plate mechanism 40
Piston ring 20, second piston ring 3 are bonded with 12 inclined-plane of groove bottom wall.In piston downlink process (acting, air-breathing), first piston
By the active force on 12 inclined-plane of groove bottom wall, which can be analyzed to tangential component and axial thrust load for ring 20 and second piston ring 30,
Wherein tangential component makes first piston ring 20,30 better tightness of second piston ring, and axial thrust load pushes 20 He of first piston ring
Second piston ring 30 and the common downlink of piston 10.Piston 10 is protected at Still time (upper and lower stop) by the elastic force of elastic plate mechanism 40
Barrier first piston ring 20 and second piston ring 30 and 12 inclined-plane of groove bottom wall are bonded.
When piston component 100 is in temperature distortion, since first piston ring 20 and second piston ring 30 often use cast iron
Or steel material etc., aluminum material usually can be used in piston 10, therefore thermal deformation situation differs greatly, during temperature distortion,
First piston ring 20 and the expansion of second piston ring 30 opposing pistons 10 become larger, since the groove bottom wall 12 of cylinder wall and piston 10 is total to
Same squeezing action, piston 10, first piston ring 20 and 30 entirety of second piston ring move down and compress elastic plate mechanism 40, when piston 10
When becoming larger relative to first piston ring 20 and the expansion of second piston ring 30, the axial elastic force that elastic plate mechanism 40 provides makes first to live
Plug ring 20 and 30 entirety of second piston ring move up.
During 10 uplink of piston, downlink, static and temperature distortion, first piston ring 20 and second piston ring 30 with
Groove bottom wall 12 is bonded always, and back clearance is not present, and the gas leakage of sideshake back clearance is reduced, simultaneously because first piston ring 20 and second piston ring
30 are axially close to always, and there is no the open areas communicated, reduce opening gas leakage.
According to one embodiment of present invention, first piston ring 20 is equipped with retention Hp 22, and retention Hp 22 cooperates second
In opening 31 and third opening 41, retention Hp 22 can be used to prevent from opening in operating in use process first in piston component 100
The 21, second opening 31 of mouth and third opening 41 relatively rotate.
To sum up, the piston component according to embodiments of the present invention, it can be under the elastic force of suitable elastic plate mechanism, no
Under the premise of consideration machine adds precision, blow-by of piston is theoretically not present using the internal combustion engine of piston component, cancels optimization even bent
Ventilation system for shaft box, labyrinth structure become possibility, and greatly good to emission performance, Engine Downsizing and lightweight offer
Place, since piston component has good leakproofness, the dynamic property and economy of engine are slightly improved, the use of machine oil
Service life is greatly improved, and not only has many advantages, such as that structure is simple, at low cost, good manufacturability easy to process, moreover it is possible to will be traditional
Twice compression ring merges at one, so that piston eliminates two ring banks, to reduce the height of piston, reduce the weight of piston to reach
To the purpose for reducing reciprocating mass.
The internal combustion engine of embodiment includes the piston component according to above-described embodiment according to a second aspect of the present invention, due to basis
The piston component of the embodiment of the present invention has above-mentioned technique effect, and therefore, internal combustion engine according to an embodiment of the present invention also has phase
The technical effect answered, the problem of blow-by of piston can be efficiently solved, and then promote economy.
The other structures of internal combustion engine according to an embodiment of the present invention and operation are all to those skilled in the art can
To understand and easy to accomplish, therefore it is not described in detail.
When in use, piston component according to an embodiment of the present invention makes piston component 100 according to an embodiment of the present invention
Used time, during piston stroking upward, first piston ring and second piston ring are under the axial elastic force effect of elastic plate mechanism, with bottom wall
Inclined-plane keeps fitting.During piston downlink, first piston ring and second piston ring are under the active force on bottom wall inclined-plane, the bottom of with
Wall inclined-plane keeps fitting, guarantees leakproofness.At the piston rest moment, first piston ring and second piston ring are made by elastic plate mechanism
It is bonded with the holding of bottom wall inclined-plane.In temperature distortion process, under the interaction of cylinder wall and bottom wall inclined-plane and elastic plate mechanism,
First piston ring and second piston ring is set to keep being bonded with bottom wall inclined-plane, first piston ring and second is lived during all of the above
Plug ring is tangentially bonded always with piston ring groove, and back clearance is not present, simultaneously because first piston ring and second piston ring are axial always
It is close to, therefore there is no the open areas communicated.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of piston component characterized by comprising
Piston, for the piston circumferentially arranged with open slot, the open slot includes the bottom extended along the piston axis direction
Wall and the side wall extended along the piston radial；
First piston ring, the first piston annular becomes annular and is sheathed in the open slot, on the first piston ring
Equipped with the first opening；
Second piston ring, the second piston annular become annular and live on the axis direction of the piston close to described first
Plug ring is sheathed in the open slot, and the second piston ring is equipped with the second opening, and first opening is opened with described second
Mouth is not connected to；
Elastic plate mechanism is formed as annular and is sheathed in the open slot, and the elastic plate mechanism is set to the second piston ring
Between the side wall of the open slot, the elastic plate mechanism is open equipped with third.
2. piston component according to claim 1, which is characterized in that first opening is with second opening described
Circumferentially-spaced 180 ° of piston.
3. piston component according to claim 1, which is characterized in that the groove bottom wall of the open slot is set as inclined-plane.
4. piston component according to claim 3, which is characterized in that the inner wall of the first piston ring is set as inclined-plane and tight
Paste the bottom wall of the open slot.
5. piston component according to claim 4, which is characterized in that the inner wall of the second piston ring is set as inclined-plane and tight
Paste the bottom wall of the open slot.
6. piston component according to claim 5, which is characterized in that the inner wall of the elastic plate mechanism is set as inclined-plane and abutting
The bottom wall of the open slot.
7. piston component according to claim 6, which is characterized in that the elastic plate mechanism includes:
First support plate, first support plate are connect with the lower end surface of the second piston ring；
Second support plate, second support plate are connect with the opening groove sidewall；
Elastic layer, the elastic layer are set between first support plate and the second support plate.
8. piston component according to claim 7, which is characterized in that it is hourglass shape that the elastic layer, which is formed as cross section,.
9. piston component according to claim 1, which is characterized in that the first piston ring is equipped with retention Hp, described
Retention Hp cooperation is in second opening and third opening.
10. a kind of internal combustion engine, which is characterized in that including piston component of any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710933599.8A CN109653894B (en) | 2017-10-10 | 2017-10-10 | Piston assembly and internal combustion engine with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710933599.8A CN109653894B (en) | 2017-10-10 | 2017-10-10 | Piston assembly and internal combustion engine with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109653894A true CN109653894A (en) | 2019-04-19 |
| CN109653894B CN109653894B (en) | 2021-05-18 |
Family
ID=66108556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710933599.8A Active CN109653894B (en) | 2017-10-10 | 2017-10-10 | Piston assembly and internal combustion engine with same |
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| Country | Link |
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| CN (1) | CN109653894B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB531345A (en) * | 1939-07-19 | 1941-01-02 | Wellworthy Piston Rings Ltd | Improvements relating to piston-rings |
| US3485504A (en) * | 1964-04-08 | 1969-12-23 | Hepworth & Grandage Ltd | Composite sealing rings |
| US3493221A (en) * | 1967-06-20 | 1970-02-03 | Tech Fortschrilt M B H Ges | Elastomeric annular spring assembly |
| US4384729A (en) * | 1981-05-20 | 1983-05-24 | Benjamin Birenbaum | Interlocking dual plane gapped compression rings |
| CN2421419Y (en) * | 2000-05-29 | 2001-02-28 | 沙纯胜 | Angular surface combined piston ring |
| CN2703885Y (en) * | 2004-05-13 | 2005-06-08 | 靳北彪 | Zero-leakage piston ring mechanism |
| CN204212869U (en) * | 2014-08-25 | 2015-03-18 | 张虞旭驹 | A kind of piston matching component |
-
2017
- 2017-10-10 CN CN201710933599.8A patent/CN109653894B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB531345A (en) * | 1939-07-19 | 1941-01-02 | Wellworthy Piston Rings Ltd | Improvements relating to piston-rings |
| US3485504A (en) * | 1964-04-08 | 1969-12-23 | Hepworth & Grandage Ltd | Composite sealing rings |
| US3493221A (en) * | 1967-06-20 | 1970-02-03 | Tech Fortschrilt M B H Ges | Elastomeric annular spring assembly |
| US4384729A (en) * | 1981-05-20 | 1983-05-24 | Benjamin Birenbaum | Interlocking dual plane gapped compression rings |
| CN2421419Y (en) * | 2000-05-29 | 2001-02-28 | 沙纯胜 | Angular surface combined piston ring |
| CN2703885Y (en) * | 2004-05-13 | 2005-06-08 | 靳北彪 | Zero-leakage piston ring mechanism |
| CN204212869U (en) * | 2014-08-25 | 2015-03-18 | 张虞旭驹 | A kind of piston matching component |
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| Publication number | Publication date |
|---|---|
| CN109653894B (en) | 2021-05-18 |
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