CN202645762U - Piston for methane engine - Google Patents
Piston for methane engine Download PDFInfo
- Publication number
- CN202645762U CN202645762U CN 201220286190 CN201220286190U CN202645762U CN 202645762 U CN202645762 U CN 202645762U CN 201220286190 CN201220286190 CN 201220286190 CN 201220286190 U CN201220286190 U CN 201220286190U CN 202645762 U CN202645762 U CN 202645762U
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- China
- Prior art keywords
- piston
- methane
- engine
- combustion chamber
- combustion
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- 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 piston for a methane engine. The piston comprises a piston head portion and a piston skirt portion which are connected vertically, wherein a piston top bank is arranged on the upper portion of the piston head portion, an annular groove is arranged on the lateral portion of the piston head portion, a piston pin hole is arranged in the piston skirt portion in penetrating mode, a combustion chamber is arranged at the top portion of the piston head portion, a reversed conical cavity with a large upper opening is arranged at the bottom of the combustion chamber, and a cylindrical cavity connected with the reversed conical cavity is arranged on the upper portion of the combustion chamber; and the upper opening of the reversed conical cavity is large, and the upper portion of the reversed conical cavity is connected with the cylindrical cavity. The shape and the dimension of the combustion chamber can be matched with the compression ratio of methane combustion according to mechanical equivalent of heat and air fuel ratio of the methane, so that working of the methane is largest, the methane enters the combustion chamber conveniently and is combusted fully, and working property of the engine is improved. The piston for the methane engine is suitable for combustion of the methane, can be matched with the compression ratio of methane combustion, enables working of the methane to be largest and improves performance of the methane engine.
Description
Technical field
The utility model relates to a kind of technical field of engines, relates in particular to a kind of methane fuelled engine piston.
Background technique
Biogas is as a kind of good renewable energy sources, have resource extensively, waste utilization, cost is low, burning is complete, discharge clean, characteristics that calorific value is higher, biogas is extensively promoted in China rural area and is used, such as cooking or biogas lamp, yet biogas has better application prospect, especially methane fuelled engine as a kind of energy.But the piston of existing methane fuelled engine mostly is the piston of diesel engine, its firing chamber be not suitable for biogas combustion, reduced biogas combustion efficient, reduced the performance of methane fuelled engine.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of suitable biogas combustion, adapts to the biogas combustion compression ratio, makes the biogas acting maximum, improves the methane fuelled engine piston of methane fuelled engine performance.
For solving the problems of the technologies described above, the technical solution of the utility model is: the methane fuelled engine piston, comprise the piston crown and the piston skirt that are connected up and down, the top of described piston crown is provided with the piston top bank, the sidepiece of described piston crown is provided with annular groove, and described piston skirt is run through and is provided with piston pin hole, and the top of described piston crown is provided with the firing chamber, the bottom of described firing chamber is large inversed taper platform chamber suitable for reading, and the top of described firing chamber is the cylindrical cavity that is connected with described inversed taper platform chamber.
As preferred technological scheme, described annular groove comprises superposed compression and is positioned at the oil ring groove of bottom.
Owing to adopted technique scheme, the methane fuelled engine piston, comprise the piston crown and the piston skirt that are connected up and down, the top of described piston crown is provided with the piston top bank, the sidepiece of described piston crown is provided with annular groove, and described piston skirt is run through and is provided with piston pin hole, and the top of described piston crown is provided with the firing chamber, the bottom of described firing chamber is large inversed taper platform chamber suitable for reading, and the top of described firing chamber is the cylindrical cavity that is connected with described inversed taper platform chamber; Large and top suitable for reading, described inversed taper platform chamber is connected with described cylindrical cavity, according to the mechanical equivalent of heat and the air fuel ratio of biogas, make the compression ratio of the shape and size adaptation biogas combustion of described firing chamber, make the biogas acting maximum, make things convenient for simultaneously biogas to enter the firing chamber, and fully burning, improved function of the engine, can be according to various operating temperature expansion situation design pistons, the utility model is fit to biogas combustion, adapt to the biogas combustion compression ratio, make the biogas acting maximum, improve the methane fuelled engine performance.
Description of drawings
Accompanying drawing 1 is the utility model embodiment's structural representation.
Among the figure: the 1-piston crown; The 2-piston skirt; 3-piston top bank; The 4-piston pin hole; The 5-firing chamber; The 6-compression; The 7-oil ring groove.
Embodiment
Below in conjunction with drawings and Examples, further set forth the utility model.In the following detailed description, only by the mode of explanation some example embodiment of the present utility model has been described.Undoubtedly, those of ordinary skill in the art can recognize, in the situation that does not depart from spirit and scope of the present utility model, can revise described embodiment with various mode.Therefore, accompanying drawing is illustrative with being described in essence, rather than is used for the protection domain of restriction claim.
As shown in drawings, the methane fuelled engine piston, comprise the piston crown 1 and the piston skirt 2 that are connected up and down, the top of described piston crown 1 is provided with piston top bank 3, the sidepiece of described piston crown 1 is provided with annular groove, and described piston skirt 2 is run through and is provided with piston pin hole 4, and the top of described piston crown 1 is provided with firing chamber 5, the bottom of described firing chamber 5 is large inversed taper platform chamber suitable for reading, and the top of described firing chamber 5 is the cylindrical cavity that is connected with described inversed taper platform chamber.Described annular groove comprises superposed compression 6 and is positioned at the oil ring groove 7 of bottom.Large and top suitable for reading, described inversed taper platform chamber is connected with described cylindrical cavity, the mechanical equivalent of heat and air fuel ratio according to biogas, make the compression ratio of the shape and size adaptation biogas combustion of described firing chamber 5, make the biogas acting maximum, make things convenient for simultaneously biogas to enter firing chamber 5, and fully burning, improved function of the engine, present embodiment is fit to biogas combustion, adapts to the biogas combustion compression ratio, make the biogas acting maximum, improve the methane fuelled engine performance.
More than show and described basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (2)
1. methane fuelled engine piston, comprise the piston crown and the piston skirt that are connected up and down, the top of described piston crown is provided with the piston top bank, the sidepiece of described piston crown is provided with annular groove, described piston skirt is run through and is provided with piston pin hole, it is characterized in that: the top of described piston crown is provided with the firing chamber, and the bottom of described firing chamber is large inversed taper platform chamber suitable for reading, and the top of described firing chamber is the cylindrical cavity that is connected with described inversed taper platform chamber.
2. methane fuelled engine piston as claimed in claim 1 is characterized in that: described annular groove comprises superposed compression and is positioned at the oil ring groove of bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220286190 CN202645762U (en) | 2012-06-18 | 2012-06-18 | Piston for methane engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220286190 CN202645762U (en) | 2012-06-18 | 2012-06-18 | Piston for methane engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202645762U true CN202645762U (en) | 2013-01-02 |
Family
ID=47414880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220286190 Expired - Fee Related CN202645762U (en) | 2012-06-18 | 2012-06-18 | Piston for methane engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202645762U (en) |
-
2012
- 2012-06-18 CN CN 201220286190 patent/CN202645762U/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: 20130102 Termination date: 20170618 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |