CN106762195A - For piston and engine in engine cylinder body - Google Patents
For piston and engine in engine cylinder body Download PDFInfo
- Publication number
- CN106762195A CN106762195A CN201710042356.5A CN201710042356A CN106762195A CN 106762195 A CN106762195 A CN 106762195A CN 201710042356 A CN201710042356 A CN 201710042356A CN 106762195 A CN106762195 A CN 106762195A
- Authority
- CN
- China
- Prior art keywords
- piston
- ring
- elastic force
- adjustment ring
- 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
- 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
- F16J1/00—Pistons; Trunk pistons; Plungers
-
- 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
- F16J9/06—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction using separate springs or elastic elements expanding the rings; Springs therefor ; Expansion by wedging
- F16J9/061—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction using separate springs or elastic elements expanding the rings; Springs therefor ; Expansion by wedging using metallic coiled or blade springs
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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 invention discloses a kind of piston in engine cylinder body, including piston main body and low-tension piston ring, a circle body recess is provided with the piston main body, the piston ring configuration is in the body recess；A circle piston ring groove is provided with the inner ring surface of the piston ring；Elastic adjustment ring is set in the piston ring groove, an adjustment ring opening is formed with the elastic force adjustment ring；The elastic force of the elastic force adjustment ring becomes big with the rising of temperature, and the piston ring can deform under the active force of the elastic force adjustment ring towards the outer shroud surface side of the piston ring.The invention also discloses a kind of engine.Provided by the present invention for piston and engine in engine cylinder body, both can guarantee that and ensured fuel economy in low cruise, and can guarantee that again and ensure sealing in high-speed cruising and meet emission performance requirement.
Description
Technical field
The present invention relates to technical field of internal combustion engines, more particularly to a kind of piston and hair in engine cylinder body
Motivation.
Background technology
With continuing to develop for engine technology, for the demand on small displacement, high-performance, the market engine of low oil consumption
Increasingly stronger,, for reducing engine emission, improving the aspects such as fuel economy also has good benefit for this.
It is an important job that engine friction horsepower is reduced in engine development, is drop using the piston ring of low-tension
One of major measure of low engine friction horsepower.
Although but the piston ring of low-tension can reduce oil consumption, after engine thermal operation a period of time, due to cylinder
Body or cylinder bucket deformation, its tension force cannot meet piston ring is brought into close contact on casing wall, frizing ability can be caused to decline, consumption of lubricating oil
It is too high, the problems such as the aggravation of gas blowby problem and engine combustion abnormal, and and then cause particulate matter etc. discharge exceeded and engine without
Method is normally run.
This is the key constraints of the piston ring application for restricting low-tension, and existing solution is lived to coordinate low-tension
Plug ring, changes the processing mode and lifting machining accuracy and the machine oil etc. using higher standard of cylinder wall surface, its economy and should
It is all poor with property.
The content of the invention
It is an object of the invention to overcome defect of the prior art, there is provided one kind both can guarantee that and ensure in low cruise
Fuel economy, can guarantee that and ensure sealing in high-speed cruising and meet the piston and engine of emission performance requirement again.
Technical solution of the present invention provides a kind of piston in engine cylinder body, including piston main body and piston
Ring, is provided with a circle body recess on the piston main body, the piston ring configuration is in the body recess；In the piston
A circle piston ring groove is provided with the inner ring surface of ring；Elastic adjustment ring, the elastic force are set in the piston ring groove
An adjustment ring opening is formed with adjustment ring；The elastic force of the elastic force adjustment ring becomes big with the rising of temperature, the work
Plug ring can deform under the active force of the elastic force adjustment ring towards the outer shroud surface side of the piston ring.
Further, in a free state, the adjustment ring opening becomes big with the rising of environment temperature；In described
The elastic force adjustment ring of the adjustment ring opening of the elastic force adjustment ring in piston ring groove less than place at room temperature
The adjustment ring opening.
Further, the elastic force adjustment ring is made up of memory metal.
Further, the memory metal is that thermoelastic martensitic transformation memory metal or deformation induced martensitic traoformation are remembered
Recall metal.
Technical solution of the present invention also provides a kind of engine, including engine cylinder-body, is set in the engine cylinder body
There is piston；The piston includes piston main body and piston ring, and the piston ring is tightly connected with the engine cylinder-body；The work
A circle body recess is provided with plug main body, the piston ring configuration is in the body recess；In the inner ring of the piston ring
A circle piston ring groove is provided with face；Elastic adjustment ring is set in the piston ring groove, in the elastic force adjustment ring
It is formed with an adjustment ring opening；The engine cylinder-body can occur block distortion, the bullet with the rising of environment temperature
The elastic force of power adjustment ring becomes big with the rising of environment temperature, piston ring energy under the active force of the elastic force adjustment ring
It is enough to be deformed with the deformation of the engine cylinder-body, to keep being tightly connected with the engine cylinder-body all the time.
Further, the deformation of the piston ring is adapted with the deformation of the engine cylinder-body and matches.
Further, the adjustment ring opening becomes big with the rising of environment temperature；In the piston ring groove
The adjustment ring opening of the elastic force adjustment ring opened less than the adjustment ring of place's elastic force adjustment ring at room temperature
Mouthful.
Further, the elastic force adjustment ring is made up of memory metal.
Further, the memory metal is that thermoelastic martensitic transformation memory metal or deformation induced martensitic traoformation are remembered
Recall metal.
Using above-mentioned technical proposal, have the advantages that：
By setting elastic adjustment ring in the piston ring groove of piston ring, the elastic force of the elastic force adjustment ring is with environment
The rising of temperature and become big, when engine operates in lower temperature operating mode, engine cylinder-body deformation is small, now elastic force adjustment ring
Elastic force it is small or decrement is small, therefore elastic force adjustment ring is small with total elastic force of piston ring combined assembly, it is achieved thereby that low friction
The good effect of work(low burn oil；When engine operates in higher temperature operating mode, engine cylinder-body deformation is big, elastic force adjustment now
The elastic force of ring is big or decrement is big, therefore elastic force adjustment ring is big with total elastic force of piston ring combined assembly, it is achieved thereby that to hair
Motivation block distortion is complied with, and keeps piston ring to be tightly connected with engine cylinder-body, effectively controls gas blowby and engine oil consumption, can be with
The frictional work of internal combustion engine is effectively improved, and ensures to discharge the normal safe for meeting laws and regulations requirement and engine operation.
Thus, provided by the present invention for the piston and engine in engine cylinder body, both can guarantee that in low speed
Ensure fuel economy during operation, can guarantee that again and ensure sealing in high-speed cruising and meet emission performance requirement.
Brief description of the drawings
The structural representation of the piston that Fig. 1 is provided for one embodiment of the invention；
Fig. 2 is the sectional view of the piston shown in Fig. 1；
Fig. 3 is the sectional view of piston main body；
Fig. 4 is the stereogram of piston ring；
Fig. 5 is the sectional view of piston ring；
Fig. 6 is the stereogram of elastic force adjustment ring；
Fig. 7 is that elastic force adjustment ring configures the schematic diagram in piston ring groove；
Fig. 8 is the view of elastic force adjustment ring at different conditions；
The schematic diagram of the engine that Fig. 9 is provided for one embodiment of the invention；
Figure 10 in high temperature environments or high engine speeds operate when, piston ring deformable seal together with engine cylinder-body is matched somebody with somebody
The schematic diagram of conjunction.
The reference table of comparisons：
1- piston main bodies；11- body recess；2- piston rings；
21- piston ring grooves；3- elastic force adjustment rings；31- adjustment rings opening；
4- engine cylinder-bodies.
Specific embodiment
Further illustrate specific embodiment of the invention below in conjunction with the accompanying drawings.Wherein identical parts identical
Reference is represented.It should be noted that the word "front", "rear", "left", "right", the "up" and "down" that are used in description below
The direction in accompanying drawing is referred to, word " interior " and " outward " are referred respectively to towards or away from the direction of particular elements geometric center.
As shown in figs. 1-7, a kind of piston in engine cylinder body that one embodiment of the invention is provided, including
The piston ring 2 of piston main body 1 and low-tension, is provided with a circle body recess 11 on piston main body 1, piston ring 2 is configured in main body
In groove 11.
A circle piston ring groove 23 is provided with the inner ring surface 22 of piston ring 2.
Elastic adjustment ring 3 is set in piston ring groove 23, an adjustment ring opening is formed with elastic force adjustment ring 3
31。
The elastic force of elastic force adjustment ring 31 becomes big with the rising of temperature, and piston ring 2 is under the active force of elastic force adjustment ring 3
Can be deformed towards the side of outer ring surface 21 of piston ring 2.
Inner ring surface 22 refers to the ring surface near the side of piston main body 1 on piston ring 2, when outer ring surface 21 refers to assembling,
Near the side of engine cylinder-body on piston ring 2.
During assembling, piston ring 2 seals engine cylinder-body 4 as shown in Figure 9.
Piston ring 2 is the piston ring of low-tension, at room temperature, the ratio of total elastic force of piston ring and the radius of engine cylinder-body
Value is less than 0.3N/mm.
And the elastic force of elastic force adjustment ring 3 becomes big with the rising of environment temperature, when engine operates in lower temperature work
During condition, engine cylinder-body 4 deforms small, and now the elastic force of elastic force adjustment ring 3 is small or decrement is small, thus elastic force adjustment ring 3 with it is living
Total elastic force of the combined assembly of plug ring 2 is small, it is achieved thereby that the good effect of low friction work(low burn oil.When engine operates in higher temperatures
During degree operating mode, engine cylinder-body 4 deforms greatly, and the elastic force of elastic force adjustment ring 3 now is big or decrement is big, and it acts on piston ring
On 2, piston ring 2 is set to be deformed towards the side of outer ring surface 21, and the process of its deformation is with the deformation of engine cylinder-body 4
Occur, the deformation of piston ring 2 is adapted with the deformation of engine cylinder-body 4 and matches, to keep being sealed with engine cylinder-body 4 all the time
Connection.When engine operates in higher temperature operating mode, elastic force adjustment ring 3 is big with total elastic force of the combined assembly of piston ring 2, so that
Realize and the deformation of engine cylinder-body 4 complied with, keep piston ring be tightly connected with engine cylinder-body, effectively control gas blowby with
Engine oil consumption, can be effectively improved the frictional work of internal combustion engine, and ensure to discharge the normal safe for meeting laws and regulations requirement and engine fortune
OK.
It is preferred that as shown in figure 8, in a free state, adjustment ring opening 31 becomes big with the rising of environment temperature.
Elastic force adjustment of the adjustment ring opening 31 of the elastic force adjustment ring 3 in piston ring groove 21 less than place at room temperature
The adjustment ring opening 31 of ring 3.
In a free state, the size of the adjustment ring opening 31 of elastic force adjustment ring 3, it is elastic force adjustment ring 3 that can convert
Play tensor, that is to say, that for the elastic force adjustment ring 3 of equal size and resiliency characteristics, when environment temperature is high, existed by pretension
The bullet tensor produced in piston ring groove 21 is bigger, and the elastic force that can be produced is bigger.
It is preferred that elastic force adjustment ring 3 is made up of memory metal, from for macroscopic perspective, memory metal deforms at low temperature,
After high temperature is heated to, the shape before deformation can be returned to, and produce larger restoring force.
Memory metal is thermoelastic martensitic transformation memory metal or deformation induced martensitic traoformation memory metal.
Wherein, thermoelastic martensitic transformation memory metal refers to that the memory effect of memory metal is that alloy is being cooled down, heated
Caused with there is thermoelastic martensitic transformation in deformation process.Deformation induced martensitic traoformation memory metal is after cooling
Undergo phase transition, be changed into the low temperature martensitic body phase crystal containing twin, if subjected to external force is acted on, the twin for being suitable for deformation will
The twin some erosion of uncomfortable fastening deformation turns into monocrystalline, as deformation martensite.This deformation martensite changes again after the heating
It is parent phase austenite, deformation all disappears.
As shown in figs. 9-10, a kind of engine that one embodiment of the invention is provided, including engine cylinder-body 4, in engine
Piston is provided with cylinder body 4.
As shown in figs. 1-7, piston includes the piston ring 2 of piston main body 1 and low-tension.Piston ring 2 is close with engine cylinder-body 4
Envelope connection.
A circle body recess 11 is provided with piston main body 1, piston ring 2 is configured in body recess 11.
A circle piston ring groove 23 is provided with the inner ring surface 22 of piston ring 2.
Elastic adjustment ring 3 is set in piston ring groove 23, an adjustment ring opening is formed with elastic force adjustment ring 3
31。
Engine cylinder-body 4 can occur block distortion with the rising of environment temperature, and the elastic force of elastic force adjustment ring 3 is with ring
The rising of border temperature and become big, piston ring 2 can be with the deformation of engine cylinder-body 4 under the active force of elastic force adjustment ring 3
Deform, to keep being tightly connected with engine cylinder-body 4 all the time.
During assembling, the canned motor cylinder body 4 of piston ring 2.
The elastic force of elastic force adjustment ring 3 becomes big with the rising of environment temperature, when engine operates in lower temperature operating mode
When, engine cylinder-body 4 deforms small, and now the elastic force of elastic force adjustment ring 3 is small or decrement is small, therefore elastic force adjustment ring 3 and piston
Total elastic force of the combined assembly of ring 2 is small, it is achieved thereby that the good effect of low friction work(low burn oil.When engine operates in higher temperature
During operating mode, engine cylinder-body 4 deforms greatly, and the elastic force of elastic force adjustment ring 3 now is big or decrement is big, and it acts on piston ring 2
On, piston ring 2 is deformed towards the side of engine cylinder-body 4, and the process of its deformation is with the deformation of engine cylinder-body 4
And occur, to keep being tightly connected with engine cylinder-body 4 all the time.When engine operates in higher temperature operating mode, elastic force is adjusted
The domain 3 is big with total elastic force of the combined assembly of piston ring 2, it is achieved thereby that complying with the deformation of engine cylinder-body 4, keeps piston ring
It is tightly connected with engine cylinder-body, effectively controls gas blowby and engine oil consumption, the frictional work of internal combustion engine can be effectively improved, and ensure
Discharge meets the normal safe operation of laws and regulations requirement and engine.
It is preferred that the deformation of the deformation of piston ring 2 and engine cylinder-body 4 is adapted match, with holding all the time with engine
Cylinder body 4 is tightly connected.
It is preferred that as shown in figure 8, in a free state, adjustment ring opening 31 becomes big with the rising of environment temperature.
Elastic force adjustment of the adjustment ring opening 31 of the elastic force adjustment ring 3 in piston ring groove 21 less than place at room temperature
The adjustment ring opening 31 of ring 3.
In a free state, the size of the adjustment ring opening 31 of elastic force adjustment ring 3, it is elastic force adjustment ring 3 that can convert
Play tensor, that is to say, that for the elastic force adjustment ring 3 of equal size and resiliency characteristics, when environment temperature is high, existed by pretension
The bullet tensor produced in piston ring groove 21 is bigger, and the elastic force that can be produced is bigger.
It is preferred that elastic force adjustment ring 3 is made up of memory metal, from for macroscopic perspective, memory metal deforms at low temperature,
After high temperature is heated to, the shape before deformation can be returned to, and produce larger restoring force.
Memory metal is thermoelastic martensitic transformation memory metal or deformation induced martensitic traoformation memory metal.
Wherein, thermoelastic martensitic transformation memory metal refers to that the memory effect of memory metal is that alloy is being cooled down, heated
Caused with there is thermoelastic martensitic transformation in deformation process.Deformation induced martensitic traoformation memory metal is after cooling
Undergo phase transition, be changed into the low temperature martensitic body phase crystal containing twin, if subjected to external force is acted on, the twin for being suitable for deformation will
The twin some erosion of uncomfortable fastening deformation turns into monocrystalline, as deformation martensite.This deformation martensite changes again after the heating
It is parent phase austenite, deformation all disappears.
In sum, provided by the present invention for the piston and engine in engine cylinder body, both can guarantee that
Ensure fuel economy during low cruise, can guarantee that again and ensure sealing in high-speed cruising and meet emission performance requirement.
As needed, above-mentioned each technical scheme can be combined, to reach best-of-breed technology effect.
Above-described is only principle of the invention and preferred embodiment.It should be pointed out that for the common skill of this area
For art personnel, on the basis of the principle of the invention, some other modifications can also be made, also should be regarded as protection model of the invention
Enclose.
Claims (9)
1. a kind of piston in engine cylinder body, it is characterised in that including piston main body and piston ring, the work
A circle body recess is provided with plug main body, the piston ring configuration is in the body recess；
A circle piston ring groove is provided with the inner ring surface of the piston ring；
Elastic adjustment ring is set in the piston ring groove, an adjustment ring opening is formed with the elastic force adjustment ring；
The elastic force of the elastic force adjustment ring becomes big with the rising of temperature, effect of the piston ring in the elastic force adjustment ring
Can be deformed towards the outer shroud surface side of the piston ring under power.
2. piston according to claim 1, it is characterised in that in a free state, the adjustment ring opening is with environment temperature
The rising of degree and become big；
The adjustment ring opening of the elastic force adjustment ring in the piston ring groove less than place at room temperature described in
The adjustment ring opening of elastic force adjustment ring.
3. piston according to claim 2, it is characterised in that the elastic force adjustment ring is made up of memory metal.
4. piston according to claim 3, it is characterised in that the memory metal is thermoelastic martensitic transformation memory metal
Or deformation induced martensitic traoformation memory metal.
5. a kind of engine, including engine cylinder-body, piston is provided with the engine cylinder body；
Characterized in that, the piston includes piston main body and piston ring,
The piston ring is tightly connected with the engine cylinder-body；
A circle body recess is provided with the piston main body, the piston ring configuration is in the body recess；
A circle piston ring groove is provided with the inner ring surface of the piston ring；
Elastic adjustment ring is set in the piston ring groove, an adjustment ring opening is formed with the elastic force adjustment ring；
The engine cylinder-body can occur block distortion with the rising of environment temperature, the elastic force of the elastic force adjustment ring with
The rising of environment temperature and become big, the piston ring can be with the engine cylinder under the active force of the elastic force adjustment ring
The deformation of body and deform, with keep be tightly connected with the engine cylinder-body all the time.
6. engine according to claim 5, it is characterised in that the deformation of the piston ring and the engine cylinder-body
Deformation is adapted matching.
7. engine according to claim 6, it is characterised in that the adjustment ring opening is with the rising of environment temperature
Become big；
The adjustment ring opening of the elastic force adjustment ring in the piston ring groove less than place at room temperature described in
The adjustment ring opening of elastic force adjustment ring.
8. engine according to claim 7, it is characterised in that the elastic force adjustment ring is made up of memory metal.
9. engine according to claim 8, it is characterised in that the memory metal is thermoelastic martensitic transformation memory
Metal or deformation induced martensitic traoformation memory metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710042356.5A CN106762195A (en) | 2017-01-20 | 2017-01-20 | For piston and engine in engine cylinder body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710042356.5A CN106762195A (en) | 2017-01-20 | 2017-01-20 | For piston and engine in engine cylinder body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106762195A true CN106762195A (en) | 2017-05-31 |
Family
ID=58944899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710042356.5A Pending CN106762195A (en) | 2017-01-20 | 2017-01-20 | For piston and engine in engine cylinder body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106762195A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003194222A (en) * | 2001-12-28 | 2003-07-09 | Riken Corp | Side rail and combinational oil ring |
| US20040119242A1 (en) * | 2002-12-18 | 2004-06-24 | Teikoku Piston Ring Co., Ltd. | Combined oil ring |
| CN1771387A (en) * | 2003-04-07 | 2006-05-10 | 丰田自动车株式会社 | Combination oil ring |
| CN101410610A (en) * | 2006-02-01 | 2009-04-15 | 创意无限控股公司 | Internal combustion engine |
-
2017
- 2017-01-20 CN CN201710042356.5A patent/CN106762195A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003194222A (en) * | 2001-12-28 | 2003-07-09 | Riken Corp | Side rail and combinational oil ring |
| US20040119242A1 (en) * | 2002-12-18 | 2004-06-24 | Teikoku Piston Ring Co., Ltd. | Combined oil ring |
| CN1771387A (en) * | 2003-04-07 | 2006-05-10 | 丰田自动车株式会社 | Combination oil ring |
| CN101410610A (en) * | 2006-02-01 | 2009-04-15 | 创意无限控股公司 | Internal combustion engine |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |
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| RJ01 | Rejection of invention patent application after publication |