CN204511684U - A kind of layered scavenging two-stroke gasoline engine cylinder body - Google Patents
A kind of layered scavenging two-stroke gasoline engine cylinder body Download PDFInfo
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- CN204511684U CN204511684U CN201520130727.1U CN201520130727U CN204511684U CN 204511684 U CN204511684 U CN 204511684U CN 201520130727 U CN201520130727 U CN 201520130727U CN 204511684 U CN204511684 U CN 204511684U
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- air belt
- scavenging air
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- matrix
- scavenging
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Abstract
The utility model relates to a kind of layered scavenging two-stroke gasoline engine cylinder body, cylinder body is provided with mixed gas gas-entered passageway, air inlet passage, exhaust passage, scavenge trunk, it is characterized in that: described cylinder body is combined by matrix and cylinder sleeve, the enclosed scavenging air belt that described scavenge trunk is made up of cylinder sleeve and matrix, this enclosed scavenging air belt is divided into main scavenging air belt and secondary scavenging air belt by the partition wall that matrix is provided with, and described main scavenging air belt and secondary scavenging air belt bottom all communicate with crankcase.This model utility housing structure simply can manufacture by high efficiency extrusion process, and not only cost is low, casting efficiency is high, accuracy of manufacturing is high, be easy to batch production, and the harmful components that can effectively reduce in tail gas is as HC and CO compound.
Description
Technical field
The utility model relates to technology of gasoline engine field, particularly a kind of layered scavenging two-stroke gasoline engine cylinder body.
Background technique
The visible layered scavenging two-stroke gasoline engine of existing market, cylinder body scavenge trunk is symmetrical four-way scavenging air belt, and its scavenge trunk angle is different, and when causing it to cast, core can not directly be extracted, and causes very large difficulty to batch production.Have two kinds of solutions at present, one additionally casts scavenging air belt side cover, and the core section that can not directly extract is divided into two-part, and a part is arranged on cylinder body, and another part is arranged on side cover, and this scheme defect is that cylinder body is more complicated, and component increase, and cost increases.Another kind of solution changes sand casting process into, it is well known that sand casting process is not only cast, efficiency is low, low precision, and cost is high.Therefore, the layered scavenging cylinder body that a kind of cost is low, casting efficiency is high, accuracy of manufacturing is high is badly in need of.
Summary of the invention
The purpose of this utility model is to provide a kind of layered scavenging two-stroke gasoline engine cylinder body, is combined by matrix and cylinder sleeve.This cylinder body simply can manufacture by high efficiency extrusion process, and not only cost is low, casting efficiency is high, accuracy of manufacturing is high, and the harmful components that can effectively reduce in tail gas are as HC and CO compound.
The technological scheme that the utility model is taked is: a kind of layered scavenging two-stroke gasoline engine cylinder body, cylinder body is provided with mixed gas gas-entered passageway, air inlet passage, exhaust passage, scavenge trunk, it is characterized in that: described cylinder body is combined by matrix and cylinder sleeve, the enclosed scavenging air belt that described scavenge trunk is made up of cylinder sleeve and matrix, this enclosed scavenging air belt is divided into main scavenging air belt and secondary scavenging air belt by the partition wall that matrix is provided with, and described main scavenging air belt and secondary scavenging air belt bottom all communicate with crankcase.
The secondary scavenging air belt sectional area of described main scavenging air belt sectional area ratio is large, and described main scavenging air belt is positioned at side, exhaust passage, and secondary scavenging air belt is positioned at mixed gas gas-entered passageway side.
Described matrix is provided with positioning boss, and described cylinder sleeve is provided with positioning groove, and after cylinder sleeve is arranged on and matrix forms cylinder body, position, each passway is accurate.
The beneficial effects of the utility model are: solve the problem that four-way scavenging air belt casting symmetrical on layered scavenging two-stroke gasoline engine cylinder body is difficult, this structure simply manufactures by high efficiency extrusion process, not only cost is low, casting efficiency is high, accuracy of manufacturing is high, and the harmful components that can effectively reduce in tail gas are as HC and CO compound.
Accompanying drawing explanation
Fig. 1 is the present invention program's structural representation;
Fig. 2 is cylinder body matrix schematic diagram;
Fig. 3 is that matrix and cylinder sleeve assemble schematic diagram;
Fig. 4 is cylinder sleeve sectional view;
Fig. 5 is A-A sectional view;
Fig. 6 is the two-stroke gasoline engine schematic diagram of application the present invention program.
In figure, sequence number illustrates: 1, matrix; 2, cylinder sleeve; 3, exhaust passage; 4, scavenge trunk; 4a, main scavenge trunk; 4b, secondary scavenge trunk; 5, mixed gas gas-entered passageway; 6, air inlet passage; 7, positioning boss; 8, positioning groove; 9, locating face; 10, partition wall; 11, piston; 12, piston intake passage; 13, crankcase; 14, suction tude; 15, Carburetor.
Embodiment
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, the utility model comprises the matrix 1(exhaust passage 3 of cylinder body, scavenge trunk 4, main scavenge trunk 4a, secondary scavenge trunk 4b, mixed gas gas-entered passageway 5, air inlet passage 6, positioning boss 7) and cylinder sleeve 2(exhaust passage 3, positioning groove 8, locating face 9, mixed gas gas-entered passageway 5, main scavenge trunk 4a, secondary scavenge trunk 4b).
Cylinder sleeve 2 is arranged in matrix 1 and is assembled into cylinder body, locating face 9 engages with positioning boss 7, matrix 1 aligns respectively with main scavenge trunk 4a, the secondary scavenge trunk 4b in cylinder sleeve 2, mixed gas gas-entered passageway 5, exhaust passage 3, form each passage, exhaust passage 3 is placed in the offside of mixed gas gas-entered passageway 5.
Scavenge trunk 4 extends in the crankcase 13 of petrol engine, the mixed gas gas-entered passageway 5 that cylinder body is provided with and air inlet passage 6 are communicated with the Carburetor 15 of petrol engine, suction tude 14 respectively, mixed gas gas-entered passageway 5 guides mixed gas to enter in crankcase 13, and air inlet passage 6 guides air to enter into cylinder body scavenge trunk 4 through piston intake passage 12.
When piston 11 is up by lower dead center, because crankcase 13 internal capacity increases, produce negative pressure, when piston 11 continue to go upward to piston skirt lower limb open cylinder body mixed gas gas-entered passageway 5 time, under the effect of this negative pressure, mixed gas sucks in crankcase 13 by mixed gas gas-entered passageway 5, now, air enters piston intake passage 12 through air inlet passage 6 and is introduced in scavenge trunk 4, and is stored in scavenge trunk 4.When mixed gas is after cylinder interior has been burnt, when piston 11 is descending by top dead center, piston 11 top is preferentially opened exhaust passage 3 and is vented, and piston 11 continues descending scavenge trunk 4 of opening again and carries out scavenging.Now, because there is air scavenge trunk 4, pour cylinder interior in time, discharged by waste gas through exhaust passage 3 prior to the mixed gas be stored in crankcase 13, the mixed gas with Rear Crank Case 13 inside enters in cylinder body firing chamber again and carries out waste gas scavenging.
The beneficial effects of the utility model are: this housing structure makes air first carry out scavenging; avoid the scavenging of traditional cylinder body mixed gas; cause mixed gas without the phenomenon of directly discharging with waste gas of burning, thus the harmful components effectively reduced in tail gas are as HC and CO compound, protect environment.
Claims (3)
1. a layered scavenging two-stroke gasoline engine cylinder body, cylinder body is provided with mixed gas gas-entered passageway, air inlet passage, exhaust passage, scavenge trunk, it is characterized in that: described cylinder body is combined by matrix and cylinder sleeve, the enclosed scavenging air belt that described scavenge trunk is made up of cylinder sleeve and matrix, this enclosed scavenging air belt is divided into main scavenging air belt and secondary scavenging air belt by the partition wall that matrix is provided with, and described main scavenging air belt and secondary scavenging air belt bottom all communicate with crankcase.
2. layered scavenging two-stroke gasoline engine cylinder body according to claim 1, it is characterized in that: described main scavenging air belt is positioned at side, exhaust passage, secondary scavenging air belt is positioned at mixed gas gas-entered passageway side, and the secondary scavenging air belt sectional area of described main scavenging air belt sectional area ratio is large.
3. layered scavenging two-stroke gasoline engine cylinder body according to claim 1, it is characterized in that: described matrix is provided with positioning boss, described cylinder sleeve is provided with positioning groove, and after cylinder sleeve is arranged on matrix formation cylinder body, each channel position is accurate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520130727.1U CN204511684U (en) | 2015-03-09 | 2015-03-09 | A kind of layered scavenging two-stroke gasoline engine cylinder body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520130727.1U CN204511684U (en) | 2015-03-09 | 2015-03-09 | A kind of layered scavenging two-stroke gasoline engine cylinder body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204511684U true CN204511684U (en) | 2015-07-29 |
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| CN201520130727.1U Active CN204511684U (en) | 2015-03-09 | 2015-03-09 | A kind of layered scavenging two-stroke gasoline engine cylinder body |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804857A (en) * | 2016-05-03 | 2016-07-27 | 曹东海 | Stratified scavenging two-stroke engine |
| CN105804858A (en) * | 2016-05-25 | 2016-07-27 | 山东华盛农业药械有限责任公司 | Layered scavenging two-stroke gasoline engine |
| CN105840335A (en) * | 2016-05-25 | 2016-08-10 | 山东华盛农业药械有限责任公司 | Closed scavenging channel with cylinder body for two-stroke engines |
| CN106285995A (en) * | 2016-10-08 | 2017-01-04 | 山东华盛农业药械有限责任公司 | Two stroke engine enclosed scavenging path |
| CN106930854A (en) * | 2017-03-29 | 2017-07-07 | 宁波大叶园林设备股份有限公司 | With the interior cylinder body for setting invisible air flue and fill up the engine of conventional scavenging air belt |
| CN112091176A (en) * | 2020-08-16 | 2020-12-18 | 重庆淬智机械有限公司 | Sand core for casting two-stroke low-pressure direct injection cylinder and manufacturing method thereof |
| CN113503214A (en) * | 2021-07-19 | 2021-10-15 | 浙江派尼尔科技股份有限公司 | Closed low-exhaust backflow scavenging passage cylinder for small gasoline engine |
| WO2022236479A1 (en) * | 2021-05-08 | 2022-11-17 | 永康市茂金园林机械有限公司 | Air inlet pipe of stratified scavenging two-stroke engine |
-
2015
- 2015-03-09 CN CN201520130727.1U patent/CN204511684U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804857A (en) * | 2016-05-03 | 2016-07-27 | 曹东海 | Stratified scavenging two-stroke engine |
| CN105804858A (en) * | 2016-05-25 | 2016-07-27 | 山东华盛农业药械有限责任公司 | Layered scavenging two-stroke gasoline engine |
| CN105840335A (en) * | 2016-05-25 | 2016-08-10 | 山东华盛农业药械有限责任公司 | Closed scavenging channel with cylinder body for two-stroke engines |
| CN105804858B (en) * | 2016-05-25 | 2018-08-07 | 山东华盛农业药械有限责任公司 | Layered scavenging two-stroke gasoline engine |
| CN106285995A (en) * | 2016-10-08 | 2017-01-04 | 山东华盛农业药械有限责任公司 | Two stroke engine enclosed scavenging path |
| CN106930854A (en) * | 2017-03-29 | 2017-07-07 | 宁波大叶园林设备股份有限公司 | With the interior cylinder body for setting invisible air flue and fill up the engine of conventional scavenging air belt |
| CN112091176A (en) * | 2020-08-16 | 2020-12-18 | 重庆淬智机械有限公司 | Sand core for casting two-stroke low-pressure direct injection cylinder and manufacturing method thereof |
| CN112091176B (en) * | 2020-08-16 | 2022-03-01 | 重庆淬智机械有限公司 | Sand core for casting two-stroke low-pressure direct injection cylinder and manufacturing method thereof |
| WO2022236479A1 (en) * | 2021-05-08 | 2022-11-17 | 永康市茂金园林机械有限公司 | Air inlet pipe of stratified scavenging two-stroke engine |
| CN113503214A (en) * | 2021-07-19 | 2021-10-15 | 浙江派尼尔科技股份有限公司 | Closed low-exhaust backflow scavenging passage cylinder for small gasoline engine |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |