CN204299718U - A kind of diesel engine - Google Patents
A kind of diesel engine Download PDFInfo
- Publication number
- CN204299718U CN204299718U CN201420695891.2U CN201420695891U CN204299718U CN 204299718 U CN204299718 U CN 204299718U CN 201420695891 U CN201420695891 U CN 201420695891U CN 204299718 U CN204299718 U CN 204299718U
- Authority
- CN
- China
- Prior art keywords
- protuberance
- slot
- convex tendon
- piston ring
- font convex
- 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.)
- Expired - Fee Related
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses a kind of diesel engine, piston ring wherein 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 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, 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.This engine 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 deformation, this expansion joint also can be good at self adaptation.Therefore this engine operation is more reliable.
Description
Technical field
The utility model relates to the improvement of engine technology, specifically refers to a kind of Diesel engine, belongs to technical field of internal combustion engines.
Background technology
Common diesel engine all comprises fuel tank, air filter, silencer, valve mechanism cover, cylinder head, cylinder body, piston, piston ring, output shaft, startup pulling plate assembly and air inlet pipe.Piston ring is wherein the becket 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 cannelure of section.Back and forth and the piston ring of rotary motion, rely on the pressure differential of gas or liquid, seal at ring periphery and cylinder and being formed between ring and a side of annular groove.
HTHP 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 moves back and forth, and rubs back and forth with cylinder wall, and add the HTHP that combustion 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 engine 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 deformation on the one hand, the structure overcoming thermal deformation that design is corresponding is simultaneously just necessary.But existing piston ring structure is overcoming in thermal deformation not very good, and this directly can bring impact to the service behaviour of diesel engine.
Utility model content
For prior art above shortcomings, the purpose of this utility model is to provide a kind of diesel engine, and 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 adopted in the utility model is such:
A kind of diesel engine, comprise fuel tank, air filter, silencer, valve mechanism cover, cylinder head, cylinder body, piston, piston ring, output shaft, startup pulling plate assembly and air inlet pipe, 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 deformation 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 bonding strength.
The material of described piston ring is martensitic stain less steel, and hardness HRC is 38-44, and elastic modelling quantity is 18000-20000 ㎏/mm
2.The heat endurance of piston ring, mechanical strength and wearability is further ensured by material.
The utility model 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 deformation, this expansion joint also can be good at self adaptation.Therefore this piston ring impact that thermal deformation can be avoided to bring from structure, thus improve the functional reliability of diesel engine.
Accompanying drawing explanation
Fig. 1-the utility model piston ring port is schematic diagram completely separately.
The completely closed schematic diagram of Fig. 2-the utility model piston ring port.
Fig. 3-the utility model piston ring ends notch portion overlap joint schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
The utility model diesel engine is the same with existing structure, also comprises fuel tank, air filter, silencer, valve mechanism cover, cylinder head, cylinder body, piston, piston ring, output shaft, startup pulling plate assembly and air inlet pipe.This structure improves the piston ring be 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 deformation 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 bonding strength.
The material of described piston ring is martensitic stain less steel, and hardness HRC is 38-44, and elastic modelling quantity is 18000-20000 ㎏/mm
2.The heat endurance of piston ring, mechanical strength and wearability is further ensured by material.
The utility model 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 deformation, this expansion joint also can be good at self adaptation.If when thermal deformation 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 is in smoothing junction, sees Fig. 2.Therefore this piston ring impact that thermal deformation 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 the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (3)
1. a diesel engine, comprise fuel tank, air filter, silencer, valve mechanism cover, cylinder head, cylinder body, piston, piston ring, output shaft, startup pulling plate assembly and air inlet pipe, 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. a kind of diesel engine 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. a kind of diesel engine 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 elastic modelling quantity is 18000-20000 ㎏/mm
2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420695891.2U CN204299718U (en) | 2014-11-19 | 2014-11-19 | A kind of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420695891.2U CN204299718U (en) | 2014-11-19 | 2014-11-19 | A kind of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204299718U true CN204299718U (en) | 2015-04-29 |
Family
ID=53105263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420695891.2U Expired - Fee Related CN204299718U (en) | 2014-11-19 | 2014-11-19 | A kind of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204299718U (en) |
-
2014
- 2014-11-19 CN CN201420695891.2U patent/CN204299718U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150429 Termination date: 20151119 |
|
| EXPY | Termination of patent right or utility model |