CN202176418U - Novel natural gas engine piston combustion chamber - Google Patents
Novel natural gas engine piston combustion chamber Download PDFInfo
- Publication number
- CN202176418U CN202176418U CN2011202458092U CN201120245809U CN202176418U CN 202176418 U CN202176418 U CN 202176418U CN 2011202458092 U CN2011202458092 U CN 2011202458092U CN 201120245809 U CN201120245809 U CN 201120245809U CN 202176418 U CN202176418 U CN 202176418U
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- CN
- China
- Prior art keywords
- piston
- combustion chamber
- firing chamber
- combustion
- natural gas
- 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
Provided is a novel natural gas engine piston combustion chamber. A bowl-shaped combustion chamber is disposed on the top face of a piston, the diameter (G) of the piston is 100mm - 140mm, the diameter (F) of a combustion chamber top is 75mm - 115mm, the minimum wall thickness (A) of a combustion bottom is 10mm - 20mm, the minimum distance (B) of the combustion chamber and a cooling oil cavity is 7mm - 10mm, a transition arc (C) of the combustion chamber bottom is R10mm - R20mm, a transition arc (E) of the combustion chamber top is R3mm - R10mm, and the included angle (D) between a combustion chamber lateral wall and the top face of the piston is 50-88 degrees. According to different diameters (G) of the piston and compression ratio of the piston, by changing dimension parameters A, B, C, D, E and F of each structure of the combustion chamber, the engine is led to have good combustion characteristic and emission characteristic. In addition, engine oil in the cooling oil cavity of the piston can play the role of forcing to cool the piston, heat around the combustion chamber is taken away, high thermal load resistance property is improved, and existing national V emission requirements can be met on the condition of installing a post-treat device.
Description
Technical field
The utility model relates to a kind of natural gas engine piston combustion bowl.
Background technique
Owing to energy scarcity and to the environmental protection pay attention to day by day, optimize the combustion process of natural gas engine, become and reduce fuel consumption, reduce one of effective way of exhaust pollutant discharging.Along with HP, hp/litre improves constantly, the heat load that engine piston bears also improves constantly simultaneously.For this reason, design a kind of novel natural gas engine piston firing chamber, the requirement that satisfy low emission, improves the thermal efficiency and anti-high heat load is very necessary.
Summary of the invention
The utility model technical problem to be solved provides a kind of novel natural gas engine piston firing chamber; Effectively the mixed tissue combustion gas realizes the purpose of optimized combustion process, the raising thermal efficiency, reduction discharging, anti-high heat load in the indoor abundant burning of piston combustion.
The technological scheme of the utility model is: a kind of novel natural gas engine piston firing chamber; Piston-top surface has one bowl of type firing chamber; Piston diameter is 100mm ~ 140mm, and the top of combustion chamber diameter is 75mm ~ 115mm, and bottom, firing chamber minimum wall thickness (MINI W.) is 10mm ~ 20mm; The firing chamber is 7mm ~ 10mm with the minimum range of cooling oil pocket; Bottom, firing chamber transition arc is R10mm ~ R20mm, and the top of combustion chamber transition arc is R3mm ~ R10mm, and sidewall of combustion chamber and piston-top surface angle are 50 ° ~ 88 °.
The utility model is on the basis of diesel motor piston firing chamber; According to natural gas burning and characteristics of flame; Through confirming to form the optimum structure size of piston combustion bowl after the repetition test again; Thereby optimize the natural gas engine burning, the requirement that satisfy low emission, improves the thermal efficiency and anti-high heat load.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Among the figure, 1 is piston, and 2 is piston-top surface, and 3 is the firing chamber; 4 is sidewall of combustion chamber, and 5 are the cooling oil pocket, and 6 is piston diameter (G); 7 is top of combustion chamber diameter (F), and 8 is bottom, firing chamber minimum wall thickness (MINI W.) (A), and 9 is firing chamber and the minimum range (B) of cooling off oil pocket; 10 is bottom, firing chamber transition arc (C), and 11 is top of combustion chamber transition arc (E), and 12 is sidewall of combustion chamber and piston-top surface angle (D).
Embodiment
The specific embodiments of the utility model is provided by Fig. 1.
As shown in Figure 1; A kind of novel natural gas engine piston firing chamber, piston-top surface 2 has one bowl of type firing chamber 3, and piston diameter 6 is G=100mm ~ 140mm; The top diameter 7 of firing chamber 3 is F=75mm ~ 115mm; Bottom, firing chamber minimum wall thickness (MINI W.) 8 is A=10mm ~ 20mm, and the firing chamber is B=7mm ~ 10mm with the minimum range 9 of cooling oil pocket, and bottom, firing chamber transition arc 10 is C=R10mm ~ R20mm; Top of combustion chamber transition arc 11 is E=R3mm ~ R10mm, and sidewall of combustion chamber and piston-top surface angle 12 are D=50 ° ~ 88 °.According to the different-diameter of piston and the compression ratio of piston; Top diameter 7 (F), sidewall of combustion chamber and piston-top surface angle 12 (D), firing chamber bottom transition arc 10 (C) and top of combustion chamber transition arc 11 (E) through changing firing chamber 3 make motor have good combustion characteristic and emission performance.Bottom, firing chamber minimum wall thickness (MINI W.) 8 is A=10mm ~ 20mm, can guarantee that there is enough intensity firing chamber 3; The firing chamber is B=7mm ~ 10mm with the minimum range 9 of cooling oil pocket; Firing chamber 3 by piston cooling oil pocket 5 fully around; Firing chamber 3 surface thermal loads can access good improvement, when guaranteeing that there is sufficient intensity firing chamber 3, guarantee to cool off oil pocket 5 inner engine oils and can play the cooling piston effect of forcing; Take away firing chamber heat on every side, improve anti-high heat load performance.Under the situation of configuration preprocessor, can reach existing state V emission request.
Claims (1)
1. a novel natural gas engine piston firing chamber is characterized in that piston-top surface has one bowl of type firing chamber, and piston diameter is 100mm ~ 140mm; The top of combustion chamber diameter is 75mm ~ 115mm; Bottom, firing chamber minimum wall thickness (MINI W.) is 10mm ~ 20mm, and the firing chamber is 7mm ~ 10mm with the minimum range of cooling oil pocket, and bottom, firing chamber transition arc is R10mm ~ R20mm; The top of combustion chamber transition arc is=R3mm ~ R10mm that sidewall of combustion chamber and piston-top surface angle are 50 ° ~ 88 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202458092U CN202176418U (en) | 2011-07-13 | 2011-07-13 | Novel natural gas engine piston combustion chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202458092U CN202176418U (en) | 2011-07-13 | 2011-07-13 | Novel natural gas engine piston combustion chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202176418U true CN202176418U (en) | 2012-03-28 |
Family
ID=45866302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202458092U Expired - Fee Related CN202176418U (en) | 2011-07-13 | 2011-07-13 | Novel natural gas engine piston combustion chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202176418U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797584A (en) * | 2012-06-20 | 2012-11-28 | 石家庄金刚内燃机零部件集团有限公司 | Energy-saving piston for gas engine |
| CN104153868A (en) * | 2014-08-12 | 2014-11-19 | 广西玉柴机器股份有限公司 | Combustor of gas machine |
-
2011
- 2011-07-13 CN CN2011202458092U patent/CN202176418U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797584A (en) * | 2012-06-20 | 2012-11-28 | 石家庄金刚内燃机零部件集团有限公司 | Energy-saving piston for gas engine |
| CN104153868A (en) * | 2014-08-12 | 2014-11-19 | 广西玉柴机器股份有限公司 | Combustor of gas machine |
| CN104153868B (en) * | 2014-08-12 | 2016-08-24 | 广西玉柴机器股份有限公司 | The combustion chamber of gas machine |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120328 Termination date: 20190713 |