CN206522197U - Low emission non-rice habitats single cylinder diesel piston structure - Google Patents
Low emission non-rice habitats single cylinder diesel piston structure Download PDFInfo
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- CN206522197U CN206522197U CN201720143527.9U CN201720143527U CN206522197U CN 206522197 U CN206522197 U CN 206522197U CN 201720143527 U CN201720143527 U CN 201720143527U CN 206522197 U CN206522197 U CN 206522197U
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- ring
- ring groove
- groove
- piston
- combustion chamber
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- 235000007164 Oryza sativa Nutrition 0.000 title claims abstract description 12
- 235000009566 rice Nutrition 0.000 title claims abstract description 12
- 240000007594 Oryza sativa Species 0.000 title abstract 2
- 238000002485 combustion reaction Methods 0.000 claims abstract description 29
- 230000006837 decompression Effects 0.000 claims abstract description 8
- 241000209094 Oryza Species 0.000 claims description 10
- 238000005457 optimization Methods 0.000 abstract description 7
- 239000003921 oil Substances 0.000 description 18
- 230000006835 compression Effects 0.000 description 10
- 238000007906 compression Methods 0.000 description 10
- 239000000295 fuel oil Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 239000010705 motor oil Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Landscapes
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
The utility model is related to a kind of diesel engine piston structure, specifically a kind of low emission non-rice habitats single cylinder diesel piston structure, belongs to diesel powered technical field.It includes piston body, and bottom of combustion chamber center is provided with central boss, and the side wall of combustion chamber is provided with annular convex rib, the aditus laryngis of combustion chamber provided with the thick lip of wedge angle；The piston land region of the lateral wall of piston body is sequentially provided with first gas ring groove, second gas ring groove and oil ring groove from top to bottom, ring between first gas ring groove and second gas ring groove is on the bank provided with decompression annular groove, and the ring up and down of oil ring groove is respectively equipped with pressure-reducing ring band and lower pressure-reducing ring band on the bank.Upper pressure-reducing ring band of the present utility model and lower pressure-reducing ring band can increase the pressure difference of ring bank above and below second gas ring groove and oil ring groove, the speed of play above and below piston ring is promoted to accelerate, coordinate the flexible plunger ring of optimization and the lifting of cylinder-barrel surface honing quality, can obviously reduce the specific oil consumption of diesel engine.
Description
Technical field
The utility model is related to a kind of diesel engine piston structure, specifically a kind of low emission non-rice habitats single cylinder diesel
Piston structure, belongs to diesel powered technical field.
Background technology
The piston structure of original non-rice habitats single cylinder diesel is more outmoded, and mostly there is small wedge angle boss combustion chamber using centre
ω circular configurations, match with low-pressure injection system and high-eddy ratio gas handling system, in combustion chamber air-fuel mixture effect compared with
Difference；Its piston land is relatively simple for structure, and top-down pressure difference is smaller between compression ring and oil ring, and specific oil consumption is higher, it is impossible to
Meet the requirement of non-rice habitats technologies for low emissions of diesel engines standard.
After non-rice habitats diesel engine China phase III discharge standard is promulgated, the single cylinder supporting for being mainly used in agricultural machinery
For diesel engine, it is considered to cost factor, most of producer uses mechanical pump internal purification technology route mostly in industry, by suitable
When increase injection pressure, optimization spraying system and gas handling system, coordinate fuel oil and air amount, when, sky（Quantity, time, sky
Between）Triadic relation, makes air-fuel mixture in combustion chamber more uniform, and shortens burning time as much as possible, to obtain CO, HC, NOX
Discharge and the optimum efficiency of smoke intensity index.Due to diesel engine PM discharge is determined by smoke intensity and engine oil consumption, and PM discharge 30~
60% is caused by engine oil consumption, therefore reduces engine oil consumption, it is necessary to study structure and their motions of piston-cylinder ring-cylinder sleeve component
Rule, improve piston land structure, pass through and using optimization flexible plunger ring and reduce cylinder liner deformation, improve sleeve port
The measures such as honing quality are matched, and can further reduce consumption of lubricating oil.Therefore, for low discharge single cylinder diesel engine, using machinery
During pump emission controls by improving combustion measure, piston combustion bowl and ring bank structure must be subject to Optimal improvements, so as to mutual with other technologies measure
Adapt to and match.
The content of the invention
The purpose of this utility model is to overcome above-mentioned weak point, so as to provide a kind of low emission non-rice habitats one-cylinder diesel
Machine piston structure, is capable of the gas exhausting property of Optimization of Diesel Engine, meets the discharge standard of state three of non-rice habitats diesel engine.
The technical scheme provided according to the utility model, low emission non-rice habitats single cylinder diesel piston structure includes piston
Combustion chamber is provided with the top of body, piston body, it is characterized in that：Bottom of combustion chamber center is provided with central boss, the side wall of combustion chamber and set
Have at annular convex rib, the aditus laryngis of combustion chamber provided with the thick lip of wedge angle；The piston land region of the lateral wall of piston body is from top to bottom
First gas ring groove, second gas ring groove and oil ring groove are sequentially provided with, the ring between first gas ring groove and second gas ring groove is provided with the bank
Annular groove is depressurized, the ring up and down of oil ring groove is respectively equipped with pressure-reducing ring band and lower pressure-reducing ring band on the bank.
Further, decompression annular groove is circular arc.
Compared with the prior art the utility model has advantages below：
The utility model is simple in construction, compact, reasonable, and the structure of new combustion chamber adds the fuel oil sprayed from oil nozzle and existed
Extruding, shunting and disturbance in combustion chamber, can effectively improve the mixing uniformity of fuel oil and air in combustion chamber, shorten burning
Time, diesel engine gas can be significantly reduced（CO、HC、NOX）And particle（PM）Discharge；Upper pressure-reducing ring band and lower pressure-reducing ring band energy
The pressure difference of ring bank, promotes the speed of play above and below piston ring to accelerate, coordinates optimization enough above and below increase second gas ring groove and oil ring groove
Flexible plunger ring and cylinder-barrel surface honing quality lifting, can obviously reduce the specific oil consumption of diesel engine；Circular arc
Decompression annular groove increases the pressure difference of ring bank above and below top compression ring, improves the downstream rate of top compression ring, increases sealing, subtracts
Altered on oil gas in few compression and enter cylinder.
Brief description of the drawings
Fig. 1 is the utility model front view.
Fig. 2 is enlarged drawing at A in Fig. 1.
Description of reference numerals：1- piston bodies, 2- combustion chambers, 3- first gas rings groove, 4- second gas rings groove, 5- oil ring grooves, 6-
Depressurize the thick lip of pressure-reducing ring band, 9- central boss, 10- annular convex ribs, 11- wedge angles under annular groove, the upper pressure-reducing ring bands of 7-, 8-.
Embodiment
The utility model will be further described with reference to the embodiment in accompanying drawing below：
As shown in Figure 1 and 2, the utility model mainly includes piston body 1, and the top of piston body 1 is provided with combustion chamber 2.Combustion chamber 3
Bottom centre is provided with central boss 9, and the side wall of combustion chamber 2 is provided with the annular convex rib 10 for promoting Oil-gas Separation mixing, combustion chamber 2
Aditus laryngis at provided with the thick lip 11 of wedge angle.The structure of combustion chamber 2 add sprayed from oil nozzle extruding of the fuel oil in combustion chamber,
Shunting and disturbance, can effectively improve the mixing uniformity of fuel oil and air in combustion chamber, shorten burning time, can significantly reduce
Diesel engine gas（CO、HC、NOX）And particle（PM）Discharge.
The piston land region of the lateral wall of piston body 1 is sequentially provided with first gas ring groove 3, second gas ring groove 4 from top to bottom
With oil ring groove 5, the ring between first gas ring groove 3 and second gas ring groove 4 is provided with the decompression annular groove 6 of circular arc on the bank, circular arc
Decompression annular groove 6 increases the pressure difference of ring bank above and below top compression ring, improves the downstream rate of top compression ring, increases sealing,
Reduce to alter on the oil gas in compression and enter cylinder.
The ring up and down of oil ring groove 5 is respectively equipped with pressure-reducing ring band 7 and lower pressure-reducing ring band 8 on the bank, and upper pressure-reducing ring band 7 subtracts with
Pressure ring band 8 can increase the pressure difference of second gas ring groove 4 and oil ring groove ring bank about 5, promote the speed of play above and below piston ring to add
It hurry up, coordinate the flexible plunger ring of optimization and the lifting of cylinder-barrel surface honing quality, can obviously reduce the consumption of lubricating oil of diesel engine
Rate.
The utility model is simple in construction, compact, reasonable, and the structure of new combustion chamber adds the fuel oil sprayed from oil nozzle and existed
Extruding, shunting and disturbance in combustion chamber, can effectively improve the mixing uniformity of fuel oil and air in combustion chamber, shorten burning
Time, diesel engine gas can be significantly reduced（CO、HC、NOX）And particle（PM）Discharge；Upper pressure-reducing ring band and lower pressure-reducing ring band energy
The pressure difference of ring bank, promotes the speed of play above and below piston ring to accelerate, coordinates optimization enough above and below increase second gas ring groove and oil ring groove
Flexible plunger ring and cylinder-barrel surface honing quality lifting, can obviously reduce the specific oil consumption of diesel engine；Circular arc
Decompression annular groove increases the pressure difference of ring bank above and below top compression ring, improves the downstream rate of top compression ring, increases sealing, subtracts
Altered on oil gas in few compression and enter cylinder.
Claims (2)
1. a kind of low emission non-rice habitats single cylinder diesel piston structure, including piston body（1）, piston body（1）Top is provided with burning
Room（2）, it is characterized in that：Combustion chamber（2）Bottom centre is provided with central boss（9）, combustion chamber（2）Side wall be provided with annular convex rib
（10）, combustion chamber（2）Aditus laryngis at provided with the thick lip of wedge angle（11）；Piston body（1）Lateral wall piston land region from upper
First gas ring groove is sequentially provided with（3）, second gas ring groove（4）And oil ring groove（5）, first gas ring groove（3）With second gas ring groove
（4）Between ring on the bank provided with decompression annular groove（6）, oil ring groove（5）Ring up and down be respectively equipped with pressure-reducing ring band on the bank（7）With under
Pressure-reducing ring band（8）.
2. low emission non-rice habitats single cylinder diesel piston structure as claimed in claim 1, it is characterized in that：The decompression annular groove
（6）For circular arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720143527.9U CN206522197U (en) | 2017-02-16 | 2017-02-16 | Low emission non-rice habitats single cylinder diesel piston structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720143527.9U CN206522197U (en) | 2017-02-16 | 2017-02-16 | Low emission non-rice habitats single cylinder diesel piston structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206522197U true CN206522197U (en) | 2017-09-26 |
Family
ID=59892660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720143527.9U Active CN206522197U (en) | 2017-02-16 | 2017-02-16 | Low emission non-rice habitats single cylinder diesel piston structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206522197U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677916A (en) * | 2017-02-16 | 2017-05-17 | 无锡华源凯马发动机有限公司 | Low-emission non-road single-cylinder diesel engine piston structure |
-
2017
- 2017-02-16 CN CN201720143527.9U patent/CN206522197U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677916A (en) * | 2017-02-16 | 2017-05-17 | 无锡华源凯马发动机有限公司 | Low-emission non-road single-cylinder diesel engine piston structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Piston structure of low emission off-road single cylinder diesel engine Effective date of registration: 20211126 Granted publication date: 20170926 Pledgee: Wuxi rural commercial bank Limited by Share Ltd. Pledgor: WUXI WORLDBEST KAMA POWER Co.,Ltd. Registration number: Y2021320010506 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20231102 Granted publication date: 20170926 Pledgee: Wuxi rural commercial bank Limited by Share Ltd. Pledgor: WUXI WORLDBEST KAMA POWER Co.,Ltd. Registration number: Y2021320010506 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |