CN104481720A - Diesel engine capable of working reliably - Google Patents
Diesel engine capable of working reliably Download PDFInfo
- Publication number
- CN104481720A CN104481720A CN201410662097.2A CN201410662097A CN104481720A CN 104481720 A CN104481720 A CN 104481720A CN 201410662097 A CN201410662097 A CN 201410662097A CN 104481720 A CN104481720 A CN 104481720A
- Authority
- CN
- China
- Prior art keywords
- piston ring
- slot
- protuberance
- convex tendon
- diesel engine
- 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.)
- Pending
Links
Classifications
-
- 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
- F02F5/00—Piston rings, e.g. associated with piston crown
-
- 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
- F16J9/12—Details
- F16J9/14—Joint-closures
- F16J9/16—Joint-closures obtained by stacking of rings
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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
- F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
- F16J9/26—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction characterised by the use of particular materials
Abstract
The invention discloses a diesel engine capable of working reliably. A piston ring is broken to form two end openings; the two end openings are connected with each other to form a closed ring and are respectively provided with forwards protruded parts which are lapped together; a T-shaped convex rib is formed on the surface, which faces to the other protruded part, of one protruded part, and a T-shaped slot for containing the T-shaped convex rib is formed in the surface, which is opposite to the other protruded part, of one protruded part; the T-shaped convex rib is positioned in the T-shaped slot; the contour size of the T-shaped slot is larger than that of the T-shaped convex rib, so that a self-adjustment expansion joint is formed. The overlapped positions of the two ends of the piston ring adopt the design that the T-shaped convex rib is positioned in the T-shaped slot, and the self-adjustment expansion joint is formed by the T-shaped convex rib and the T-shaped slot, so that the expansion joint can be well adaptive even under larger thermal deformation. Therefore, the engine works reliably more.
Description
Technical field
The present invention relates to the improvement of engine technology, specifically refer to a kind of diesel engine, belong to technical field of internal combustion engines.
Background technique
Common diesel engine all comprises fuel tank, air-strainer, silencing apparatus, valve mechanism cover, cylinder head, cylinder body, piston, piston ring, output shaft, startup pulling plate assembly and suction tude.Piston ring is wherein the metal ring for embedding piston groove inside, and piston ring is divided into two kinds: compression ring and machine oil ring.Compression ring can be used to the burning mixture of sealing combustion indoor; Machine oil ring is then used for striking off machine oil unnecessary on cylinder.Piston ring a kind ofly has the metallic elastic ring expanding outwardly more greatly distortion, and it is mounted in its corresponding circular groove of section.Back and forth and the piston ring of rotary motion, rely on the pressure difference of gas or liquid, seal at ring periphery and cylinder and being formed between ring and a side of annular groove.
High Temperature High Pressure due to engine chamber determines the severe of piston ring working environment, therefore requires higher to the structure of piston ring and material.During work, piston ring constantly to-and-fro motion, rubs back and forth with cylinder wall, and add the High Temperature High Pressure that firing chamber produces, therefore piston ring self often has very high temperature, and at high temperature, piston ring has the trend of dilatancy.Because piston ring size design is often very accurate with coordinating of peripheral parts (cylinder wall and piston), therefore even less thermal expansion also may bring negative effect to its operation, even affect whole system, particularly motor develops towards high rotary speed direction at present, and the impact of this respect can be more obvious.Given this, on the Material selec-tion of piston ring, just need the impact considering thermal distortion on the one hand, the structure overcoming thermal distortion that design is corresponding is simultaneously just necessary.But existing piston ring structure is overcoming in thermal distortion not very good, and this directly can bring impact to the service behaviour of diesel engine.
Summary of the invention
For prior art above shortcomings, the object of the present invention is to provide a kind of diesel engine of reliable operation, the piston ring of this diesel engine can adapt to the thermal expansion under engine operation automatically, engine operation better reliability.
To achieve these goals, the technical solution used in the present invention is such:
The diesel engine of reliable operation, comprise fuel tank, air-strainer, silencing apparatus, valve mechanism cover, cylinder head, cylinder body, piston, piston ring, output shaft, startup pulling plate assembly and suction tude, wherein piston ring disconnects and forms two-port, two-port is connected to form closed ring-type again, two-port has the protuberance for mutually overlapping outstanding forward respectively, wherein a protuberance and place end interior walls be smooth are given prominence to, another protuberance is smoothly given prominence to along place end outer wall, and the thickness sum of two protuberances is the wall thickness of piston ring; Wherein a protuberance is formed with T font convex tendon on the face of another protuberance, the face that another protuberance is relative is formed with the T-slot for holding T font convex tendon, the height of T font convex tendon is the degree of depth of T-slot, T font convex tendon is positioned at T-slot, wherein the overall size of T-slot is greater than T font convex tendon, forms self-regulation expansion joint to make both.
Described T-slot and the width of that section of piston ring axis being parallel are 1.5-2.0 times of the corresponding section width of T font convex tendon.The width being equivalent to expansion joint is 0.5-1 times of size of the outstanding corresponding section width of T font structure, can ensure that both have enough thermal distortion spaces after combining like this.
The degree of depth of described T-slot is the 1/3-2/3 of place end protuberance thickness.Such Thickness Design, both ensure that wall thickness, in turn ensure that join strength.
The material of described piston ring is Martensitic Stain Less Steel, and hardness HRC is 38-44, and Young's modulus is 18000-20000 ㎏/mm
2.The thermostability of piston ring, mechanical strength and wear resistance is further ensured by material.
The present invention adopts T font convex tendon to be positioned at T-slot design due to piston ring two ends lap position, and both form self-regulation expansion joint, even if therefore there is larger thermal distortion, this expansion joint also can be good at self adaption.Therefore this piston ring impact that thermal distortion can be avoided to bring from structure, thus improve the functional reliability of diesel engine.
Accompanying drawing explanation
Fig. 1-inventive piston central port is schematic diagram completely separately.
The completely closed schematic diagram in Fig. 2-inventive piston central port.
Fig. 3-inventive piston central port part overlap joint schematic diagram.
In order to outstanding inventive point, figure only reflects piston ring structure figure.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Diesel engine of the present invention is the same with existing structure, also comprises fuel tank, air-strainer, silencing apparatus, valve mechanism cover, cylinder head, cylinder body, piston, piston ring, output shaft, startup pulling plate assembly and suction tude.This architecture advances is piston ring wherein, see Fig. 1, Fig. 2 and Fig. 3, upper as can be seen from figure, this piston ring disconnects and forms two-port, two-port is connected to form closed ring-type again, and two-port has the protuberance 1 for mutually overlapping outstanding forward respectively, and wherein a protuberance 1 is given prominence to place end interior walls be smooth, another protuberance 1 is smoothly given prominence to along place end outer wall, and the thickness sum of two protuberances is the wall thickness of piston ring.Wherein a protuberance is formed with T font convex tendon on the face of another protuberance, the face that another protuberance is relative is formed with the T-slot 2 for holding T font convex tendon, the height of T font convex tendon is the degree of depth of T-slot 2, T font convex tendon is positioned at T-slot 2, wherein the overall size of T-slot 2 is greater than T font convex tendon, forms self-regulation expansion joint to make both.
Described T-slot 2 and the width of that section of piston ring axis being parallel are 1.5-2.0 times of the corresponding section width of T font convex tendon.The width being equivalent to expansion joint is 0.5-1 times of size of the outstanding corresponding section width of T font structure, can ensure that both have enough thermal distortion spaces after combining like this.
The degree of depth of described T-slot is the 1/3-2/3 of place end protuberance thickness.Such Thickness Design, both ensure that wall thickness, in turn ensure that join strength.
The material of described piston ring is Martensitic Stain Less Steel, and hardness HRC is 38-44, and Young's modulus is 18000-20000 ㎏/mm
2.The thermostability of piston ring, mechanical strength and wear resistance is further ensured by material.
The present invention adopts T font convex tendon to be positioned at T-slot design due to piston ring two ends lap position, and both form self-regulation expansion joint, even if therefore there is larger thermal distortion, this expansion joint also can be good at self adaption.If when thermal distortion is larger, two-port part overlaps, and sees Fig. 3, and part when overlapping, piston ring inside and outside wall all has overlapping the slot, but due to overlapping the slot less, so do not affect the function of piston ring.When overlapping completely, on piston ring inside and outside wall, overlapping part smooth connection, is shown in Fig. 2.Therefore this piston ring impact that thermal distortion can be avoided to bring from structural design, thus improve the functional reliability of diesel engine.
What finally illustrate is, above embodiment is only in order to illustrate technological scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technological scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (3)
1. the diesel engine of reliable operation, comprise fuel tank, air-strainer, silencing apparatus, valve mechanism cover, cylinder head, cylinder body, piston, piston ring, output shaft, startup pulling plate assembly and suction tude, described piston ring disconnects and forms two-port, two-port is connected to form closed ring-type again, it is characterized in that: two-port has the protuberance for mutually overlapping outstanding forward respectively, wherein a protuberance and place end interior walls be smooth are given prominence to, another protuberance is smoothly given prominence to along place end outer wall, and the thickness sum of two protuberances is the wall thickness of piston ring; Wherein a protuberance is formed with T font convex tendon on the face of another protuberance, the face that another protuberance is relative is formed with the T-slot for holding T font convex tendon, the height of T font convex tendon is the degree of depth of T-slot, T font convex tendon is positioned at T-slot, wherein the overall size of T-slot is greater than T font convex tendon, forms self-regulation expansion joint to make both.
2. the diesel engine of reliable operation according to claim 1, is characterized in that: the degree of depth of described T-slot is the 1/3-2/3 of place end protuberance thickness.
3. the diesel engine of reliable operation according to claim 1, is characterized in that: the material of described piston ring is Martensitic Stain Less Steel, and hardness HRC is 38-44, and Young's modulus is 18000-20000 ㎏/mm
2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410662097.2A CN104481720A (en) | 2014-11-19 | 2014-11-19 | Diesel engine capable of working reliably |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410662097.2A CN104481720A (en) | 2014-11-19 | 2014-11-19 | Diesel engine capable of working reliably |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104481720A true CN104481720A (en) | 2015-04-01 |
Family
ID=52756306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410662097.2A Pending CN104481720A (en) | 2014-11-19 | 2014-11-19 | Diesel engine capable of working reliably |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104481720A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106150750A (en) * | 2015-04-23 | 2016-11-23 | 梁振勇 | The piston ring that serious wear seals the most very much |
| CN110985586A (en) * | 2019-11-15 | 2020-04-10 | 宣城协盈汽车零部件科技有限公司 | Low-noise automobile shock-absorbing floating piston and manufacturing method thereof |
-
2014
- 2014-11-19 CN CN201410662097.2A patent/CN104481720A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106150750A (en) * | 2015-04-23 | 2016-11-23 | 梁振勇 | The piston ring that serious wear seals the most very much |
| CN110985586A (en) * | 2019-11-15 | 2020-04-10 | 宣城协盈汽车零部件科技有限公司 | Low-noise automobile shock-absorbing floating piston and manufacturing method thereof |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150401 |