CN203248268U - Piston of natural gas engine for forklift - Google Patents
Piston of natural gas engine for forklift Download PDFInfo
- Publication number
- CN203248268U CN203248268U CN 201320127089 CN201320127089U CN203248268U CN 203248268 U CN203248268 U CN 203248268U CN 201320127089 CN201320127089 CN 201320127089 CN 201320127089 U CN201320127089 U CN 201320127089U CN 203248268 U CN203248268 U CN 203248268U
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- Prior art keywords
- piston
- natural gas
- firing chamber
- gas engine
- ring groove
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Abstract
The utility model discloses a piston of a natural gas engine for a forklift. The piston comprises a piston head portion with the height of 15mm, a groove portion with the height of 22mm and a skirt portion with the height of 61mm. The piston head portion, the groove portion and the skirt portion are sequentially distributed from top to bottom. A combustion chamber concave inward is arranged on the top face of the piston head portion. Two gas ring grooves and an oil ring groove are formed in the outer circle of the groove portion. The skirt portion is provided with pin holes. The combustion chamber is located in the center of the top face of the piston, the bottom of the combustion chamber is a plane, the shape of the combustion chamber is straight-opening cylinder, the depth of the combustion chamber is 14-17.5mm, and the diameter of the combustion chamber is 54-57mm. Piston inner cavity are formed in the groove portion and the skirt portion respectively. A partition layer is arranged between the bottom face of the combustion chamber and the piston inner cavities, and the thickness of the partition layer is 10-14mm. The piston of the natural gas engine for the forklift is suitable for the natural gas engine, and has the advantages of being low in emission, clean, environmentally friendly and little in pollution.
Description
Technical field
The utility model relates to forklift engine piston technical field, is specifically related to a kind of used for natural gas engine piston for fork truck.
Background technique
Existing 490BPG series forklift diesel engine is atomizing and the combustion characteristic during according to diesel injection, and its piston adopts is compression-ignited, high compression ratio, toroidal combustion chamber's design, and the firing chamber is not on the axis of piston; And the characteristic of natural gas engine be Spark ignition type, than low compression ratio; If therefore existing 490BPG series forklift will be made into the natural gas engine of low emission with diesel engine, because this piston compression is than large now, the problems such as toroidal combustion chamber and firing chamber biasing, can not be applicable to the burning of rock gas, be cisco unity malfunction, therefore this piston can not be used for natural gas engine.That is to say, compression-ignited diesel engine piston is not suitable for the operating mode of motor of the gas-firing of Spark ignition type.
Therefore, a kind of natural gas engine that is applicable to has low emission, and clean environment firendly pollutes little characteristics, and the used for natural gas engine piston that is used for fork truck that can overcome the prior art defective is demanded urgently occurring.
The model utility content
For solving the problems of the technologies described above, we have proposed a kind of natural gas engine that is applicable to, and have low emission, and clean environment firendly pollutes little characteristics, and can overcome the used for natural gas engine piston that is used for fork truck of prior art defective.
For achieving the above object, the technical solution of the utility model is as follows: a kind of used for natural gas engine piston for fork truck, comprise that highly described piston crown, slot part and skirt section distribute from top to bottom successively for the piston crown of 15mm, highly for the slot part of 22mm and highly be the skirt section of 61mm; The end face of described piston crown is provided with the firing chamber that indent forms;
Offer twice compression and an oil ring groove on the described slot part cylindrical, position, described skirt section offers pin-and-hole;
Described firing chamber is positioned at the central authorities of described piston-top surface, and the bottom of firing chamber is the plane, and it is shaped as straight mouthful of cylindrical shape, and the degree of depth of described firing chamber is 14-17.5mm, and diameter is 54-57mm;
Offer piston cavity in described slot part and the described skirt section, be provided with interlayer between bottom surface, described firing chamber and the described piston cavity, the thickness of described interlayer is 10-14mm.
Preferably, the upper inside wall of described firing chamber and described piston-top surface connecting part are provided with the top fillet, and described top fillet radius is 1-3mm; The side edge place of described inwall bottom and bottom, described firing chamber is provided with the bottom fillet, and described bottom fillet radius is 1-6mm.
Preferably, described compression comprises first gas ring groove and second gas ring groove, and described first gas ring groove and second gas ring well width are 2.5mm, and inner diameter is 81mm;
Described first gas ring groove is positioned on the outside piston of the following 15mm of described piston-top surface, and described second gas ring groove is positioned on the outside piston of the following 24.5mm of described piston-top surface.
Preferably, described oil ring groove width is 5mm, and inner diameter is 80mm; Described oil ring groove is positioned on the outside piston of the following 32mm of described piston-top surface.
Preferably, described compression is opened in the top of described oil ring groove.
Preferably, bottom surface, described firing chamber offers annular groove one, and described annular groove radius is 8mm, and described annular groove bottom is 18mm to the distance of described piston-top surface.
Preferably, described pin-and-hole is positioned at the skirt section of the following 53.5mm of described piston-top surface, and the nominal bore diameter of described pin-and-hole is 29mm.
Pass through technique scheme, the beneficial effects of the utility model are: a kind of used for natural gas engine piston for fork truck, comprise that highly described piston crown, slot part and skirt section distribute from top to bottom successively for the piston crown of 15mm, highly for the slot part of 22mm and highly be the skirt section of 61mm; The end face of described piston crown is provided with the firing chamber that indent forms; Offer twice compression and an oil ring groove on the described slot part cylindrical, position, described skirt section offers pin-and-hole; Described firing chamber is positioned at the central authorities of described piston-top surface, and the bottom of firing chamber is the plane, and it is shaped as straight mouthful of cylindrical shape, and the degree of depth of described firing chamber is 14-17.5mm, and diameter is 54-57mm; Offer piston cavity in described slot part and the described skirt section, be provided with interlayer between bottom surface, described firing chamber and the described piston cavity, the thickness of described interlayer is 10-14mm; Adopt the used for natural gas engine piston for fork truck provided by the utility model, be applicable to natural gas engine, have low emission, clean environment firendly pollutes little characteristics, and can overcome the prior art defective.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the disclosed a kind of used for natural gas engine piston for fork truck of the utility model embodiment 1;
Fig. 2 is the schematic top plan view of the structure of the disclosed a kind of used for natural gas engine piston for fork truck of the utility model embodiment 1.
Numeral and the represented corresponding part title of letter among the figure:
1. bottom surface, 12. interlayers, 13. annular groove 14. piston-top surfaces, 15. firing chamber, piston crown 11. firing chamber 2. slot parts 21. compressions 211. first gas ring grooves 212. second gas ring grooves 22. oil ring grooves 3. skirt sections 31. pin-and-holes.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technological scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment who obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
The utility model provides a kind of natural gas engine that is applicable to, and has low emission, and clean environment firendly pollutes little characteristics, and can overcome the used for natural gas engine piston that is used for fork truck of prior art defective.
Below in conjunction with embodiment and embodiment the utility model is described in further detail.
Embodiment 1,
Such as Fig. 1 and as shown in Figure 2, a kind of 490BPG series is used for the used for natural gas engine piston of fork truck, its nominal outside diameter is 90mm, the nominal height is 91mm, comprise highly for the piston crown 1 of 15mm, highly for the slot part 2 of 22mm and highly be the skirt section 3 of 61mm, described piston crown 1, slot part 2 and skirt section 3 are formed by cast inblock, distribute successively from top to bottom; The end face of described piston crown 1 is provided with the firing chamber 11 that indent forms; Offer twice compression 21 and an oil ring groove 22 on described slot part 2 cylindricals, 3 positions, described skirt section offer pin-and-hole 31; Described pin-and-hole 31 is positioned at the skirt section of the following 53.5mm of described piston-top surface, and the nominal bore diameter of described pin-and-hole is 29mm, and described pin-and-hole connects bent axle, and perpendicular to the piston medial axis.
Described firing chamber 11 is positioned at the central authorities of described piston-top surface 14, and the bottom of firing chamber is the plane, and it is shaped as straight mouthful of cylindrical shape, and the degree of depth of described firing chamber is 14-17.5mm, and diameter is 54-57mm; Offer piston cavity in described slot part 2 and the described skirt section 3, be provided with interlayer 12 between bottom surface, described firing chamber 15 and the described piston cavity, the thickness of described interlayer 12 is 10-14mm, has guaranteed that piston has enough mechanical strengths when gas-firing.Bottom surface, described firing chamber 15 offers annular groove 13 one, and described annular groove 13 radiuses are 8mm, and described annular groove 13 bottoms are 18mm to the distance of described piston-top surface.
Described compression 21 is opened in the top of described oil ring groove 22, and described compression 21 comprises first gas ring groove 211 and second gas ring groove 212, and described first gas ring groove 211 and second gas ring groove 212 width are 2.5mm, and inner diameter is 81mm; Described first gas ring groove 211 is positioned on the outside piston of described piston-top surface 14 following 15mm, and described second gas ring groove 212 is positioned on the outside piston of described piston-top surface 14 following 24.5mm.Described oil ring groove 22 width are 5mm, and inner diameter is 80mm; Described oil ring groove 22 is positioned on the outside piston of described piston-top surface 14 following 32mm.
The upper inside wall of described firing chamber 11 and described piston-top surface 14 connecting parts are provided with top fillet (not shown), and described top fillet radius is 1-3mm; The side edge place of described inwall bottom and bottom, described firing chamber is provided with bottom fillet (not shown), and described bottom fillet radius is 1-6mm.
In the technical program, described firing chamber 11 is positioned at the piston-top surface centre, so that spark plug is balanced to whole burning indoor distances, thereby makes the time shorten of rock gas perfect combustion.Because the utility model piston has adopted the firing chamber of straight mouthful of round barrel shape, improved the turbulent flow energy of rock gas in the internal furnace, firing chamber, made turbulent motion enhancing in the cylinder, the turbulent flame propagation speed increases, burning is accelerated, thereby excavated out the power potential of motor.
Pass through technique scheme, the beneficial effects of the utility model are: a kind of used for natural gas engine piston for fork truck, comprise that highly described piston crown 1, slot part 2 and skirt section 3 distribute from top to bottom successively for the piston crown 1 of 15mm, highly for the slot part 2 of 22mm and highly be the skirt section 3 of 61mm; The end face of described piston crown 1 is provided with the firing chamber 11 that indent forms; Offer twice compression 21 and an oil ring groove 22 on the described slot part cylindrical, 3 positions, described skirt section offer pin-and-hole 31; Described firing chamber 11 is positioned at the central authorities of described piston-top surface 14, and the bottom of firing chamber is the plane, and it is shaped as straight mouthful of cylindrical shape, and the degree of depth of described firing chamber 11 is 14-17.5mm, and diameter is 54-57mm; Offer piston cavity in described slot part 2 and the described skirt section 3, be provided with interlayer 12 between bottom surface, described firing chamber 15 and the described piston cavity, the thickness of described interlayer 12 is 10-14mm; Adopt the used for natural gas engine piston for fork truck provided by the utility model, be applicable to natural gas engine, have low emission, clean environment firendly pollutes little characteristics, and can overcome the prior art defective.
Above-described only is preferred implementation of the present utility model; should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from the utility model creation design; can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (7)
1. a used for natural gas engine piston that is used for fork truck is characterized in that, comprises that highly described piston crown, slot part and skirt section be successively distribution from top to bottom for the piston crown of 15mm, highly for the slot part of 22mm and highly be the skirt section of 61mm; The end face of described piston crown is provided with the firing chamber that indent forms;
Offer twice compression and an oil ring groove on the described slot part cylindrical, position, described skirt section offers pin-and-hole;
Described firing chamber is positioned at the central authorities of described piston-top surface, and the bottom of firing chamber is the plane, and it is shaped as straight mouthful of cylindrical shape, and the degree of depth of described firing chamber is 14-17.5mm, and diameter is 54-57mm;
Offer piston cavity in described slot part and the described skirt section, be provided with interlayer between bottom surface, described firing chamber and the described piston cavity, the thickness of described interlayer is 10-14mm.
2. the used for natural gas engine piston for fork truck according to claim 1 is characterized in that, the upper inside wall of described firing chamber and described piston-top surface connecting part are provided with the top fillet, and described top fillet radius is 1-3mm; The side edge place of described inwall bottom and bottom, described firing chamber is provided with the bottom fillet, and described bottom fillet radius is 1-6mm.
3. the used for natural gas engine piston for fork truck according to claim 1 is characterized in that, described compression comprises first gas ring groove and second gas ring groove, and described first gas ring groove and second gas ring well width are 2.5mm, and inner diameter is 81mm;
Described first gas ring groove is positioned on the outside piston of the following 15mm of described piston-top surface, and described second gas ring groove is positioned on the outside piston of the following 24.5mm of described piston-top surface.
4. the used for natural gas engine piston for fork truck according to claim 1 is characterized in that, described oil ring groove width is 5mm, and inner diameter is 80mm; Described oil ring groove is positioned on the outside piston of the following 32mm of described piston-top surface.
5. the used for natural gas engine piston for fork truck according to claim 1 is characterized in that, described compression is opened in the top of described oil ring groove.
6. the used for natural gas engine piston for fork truck according to claim 1 is characterized in that, bottom surface, described firing chamber offers annular groove one, and described annular groove radius is 8mm, and described annular groove bottom is 18mm to the distance of described piston-top surface.
7. the used for natural gas engine piston for fork truck according to claim 1 is characterized in that, described pin-and-hole is positioned at the skirt section of the following 53.5mm of described piston-top surface, and the nominal bore diameter of described pin-and-hole is 29mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320127089 CN203248268U (en) | 2013-03-20 | 2013-03-20 | Piston of natural gas engine for forklift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320127089 CN203248268U (en) | 2013-03-20 | 2013-03-20 | Piston of natural gas engine for forklift |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203248268U true CN203248268U (en) | 2013-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320127089 Expired - Fee Related CN203248268U (en) | 2013-03-20 | 2013-03-20 | Piston of natural gas engine for forklift |
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| CN (1) | CN203248268U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630400A (en) * | 2019-11-21 | 2019-12-31 | 潍柴动力股份有限公司 | Piston for gas engine and gas engine with same |
-
2013
- 2013-03-20 CN CN 201320127089 patent/CN203248268U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630400A (en) * | 2019-11-21 | 2019-12-31 | 潍柴动力股份有限公司 | Piston for gas engine and gas engine with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HEFEI BAOFA POWER TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: SUZHOU JUCHENG GAS POWER TECHNOLOGY CO., LTD. Effective date: 20131009 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 215500 SUZHOU, JIANGSU PROVINCE TO: 230601 HEFEI, ANHUI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20131009 Address after: 230601 Anhui city in Hefei Province, the economic and Technological Development Zone, Road No. 136 Patentee after: HEFEI BAUFAR POWER TECHNIQUE CO., LTD. Address before: 215500, Suzhou Changshou City high tech Zone, Jiangsu, Guilin Road No. 9 Suzhou poly Gas Power Technology Co., Ltd. Patentee before: Suzhou Jucheng Gas Power Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131023 Termination date: 20190320 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |