CN206158843U - Two -stroke -cycle engine layering scavenging subassembly - Google Patents
Two -stroke -cycle engine layering scavenging subassembly Download PDFInfo
- Publication number
- CN206158843U CN206158843U CN201621175281.5U CN201621175281U CN206158843U CN 206158843 U CN206158843 U CN 206158843U CN 201621175281 U CN201621175281 U CN 201621175281U CN 206158843 U CN206158843 U CN 206158843U
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- China
- Prior art keywords
- scavenging
- cylinder block
- passage
- piston
- air
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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.)
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- 230000002000 scavenging effect Effects 0.000 title claims abstract description 116
- 238000002485 combustion reaction Methods 0.000 claims abstract description 35
- 239000002912 waste gas Substances 0.000 claims abstract description 23
- 239000007789 gas Substances 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 11
- 238000012856 packing Methods 0.000 claims 1
- 238000003915 air pollution Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000446 fuel Substances 0.000 description 8
- 239000003921 oil Substances 0.000 description 8
- 239000000203 mixture Substances 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 3
- 239000000295 fuel oil Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000008246 gaseous mixture Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The utility model discloses a two -stroke -cycle engine layering scavenging subassembly. It includes the cylinder block, piston assembly, crankcase and cylinder body lower cover, the inside combustion chamber that is used for installing piston assembly that is equipped with of cylinder block, the cylinder block is connected with the cylinder body lower cover, the crankcase is arranged in between cylinder block and the cylinder body lower cover, the right side of cylinder block is equipped with air duct and mixes the air flue, the left side of cylinder block is equipped with the waste gas exhaust passage, the front side and the rear side of cylinder block are equipped with scavenge trunk and front and back symmetric distribution, air duct and scavenge trunk intercommunication, mix air flue and crankcase intercommunication, waste gas exhaust passage and combustion chamber intercommunication, be equipped with scavenging entry and scavenging export on the scavenge trunk, scavenging entry and crankcase intercommunication, scavenging export and combustion chamber intercommunication, be equipped with the fin on the lateral surface of cylinder block, the fin is integrated into one piece with the cylinder block. The beneficial effects of the utility model are that: stable combustion improves combustion efficiency, reduces air pollution, improves oil -fired utilization ratio, reduces the oil consumption.
Description
Technical field
The utility model is related to two stroke engine correlative technology field, refers in particular to a kind of two stroke engine layering and sweeps
Pneumatic module.
Background technology
Since coming out from internal combustion engine invention, although existing more than hundred years history, sending out for human society has but been greatly promoted
Exhibition and the raising of human living standard.Two stroke engine has more many advantages, its not only power per liter height, smooth running, work
Make reliability, small volume, lightweight, low cost, and structure and be simple to manufacture, amount of parts is few, maintaining facilitates, because
This, is widely used on miniature gasoline engine, graden machine, equipment for plant protection.
But, at present extensively practical two stroke engine there is also blemish in an otherwise perfect thing, and its fuel consumption is high, particularly discharges
It is seriously polluted, it has also become a big public hazards of pollution environment.Thus, some developed countries and regions even two-stroke to be cancelled is started
Machine, uses four-stroke engine instead.However, things is development, we should not easily abandon two stroke engine, use section
Attitude improves it, and energy-conservation and environmental protection are the total responsibilities of our each citizen, develop and develop new two-stroke and start
Machine also just becomes the target that countries in the world IC Engine Design teacher work hard for it.
Utility model content
The utility model be in order to overcome the shortcomings of prior art in exist it is above-mentioned, there is provided a kind of fuel consumption is low and air
A kind of low two stroke engine layered scavenging component of pollution.
To achieve these goals, the utility model is employed the following technical solutions：
A kind of two stroke engine layered scavenging component, including cylinder block, piston component, crankcase and cylinder body lower cover, institute
The combustion chamber for installing piston component is provided with inside the cylinder block stated, described cylinder block is connected with cylinder body lower cover, described
Crankcase is placed between cylinder block and cylinder body lower cover, and air duct and mixed airway, the gas are provided with the right side of the cylinder block
It is provided with exhausting waste gas passage on the left of cylinder body, the front side of the cylinder block and rear side are provided with scavenging passage and symmetrical in front and back,
Described air duct and scavenging channel connection, described mixed airway is connected with crankcase, described exhausting waste gas passage and
Combustion chamber, described scavenging passage is provided with scavenging entrance and scavenging outlet, and described scavenging entrance is connected with crankcase,
Described scavenging outlet and combustion chamber, the lateral surface of the cylinder block is provided with fin, described fin and cylinder
Body is integrally formed.
When piston component reaches top dead centre, mixed airway is to open, scavenging port closing, from the mixing of mixed airway
Gas is entered in crankcase, and the pure air in air duct is entered in scavenging passage, the gaseous mixture Jing in crankcase
The scavenging entrance for crossing scavenging passage is entered in scavenging passage.When scavenging is carried out, piston component is descending to be stopped downwards by top dead centre
Point operation, the volume reducing in crankcase, pressure rise, now by air duct enter in scavenging passage exist be do not have
There is mixed pure air；Piston component is continued traveling downwardly, and mixed airway is closed, and exhausting waste gas passage is opened, Indoor Combustion of burning
High pressure exhaust gas afterwards are automatically drained out cylinder in vitro, and at the same time scavenging outlet is also opened, and gas compressed Jing is swept in crankcase
Gas entrance is entered into that burning is indoor by scavenging passage by scavenging outlet, but initially enter combustion chamber be then stored in scavenging
The pure air that passage upper end is not mixed, its waste gas indoor with burning carries out discharging gas by exhausting waste gas passage after blending purging
Outside cylinder body；In succession with scavenging passage in combustion mixture it is three-in-one enter combustion chamber, thus achieve multi-cavity air inlet, be layered
Scavenging, fundamentally solves fuel and external " mixing loss " of cylinder is discharged without work by combustion, so as to improve fuel oil
Utilization rate, reduce fuel consumption, while decreasing the oxious component in waste gas, reduce exhaust emission value, reduce sky
Gas pollutes.With the continuation that piston component is moved, process of entirely doing work is completed, so gone round and begun again.
Preferably, described crankcase includes Crank connected rod group, bearing, oil sealing and bent axle, described Crank connected rod group,
Bearing and oil sealing are installed on bent axle, and described bent axle is arranged between cylinder block and cylinder body lower cover by bearing and oil sealing,
Described Crank connected rod group is connected with piston component.The design of bearing and oil sealing, can effectively prevent crankcase blow-by.
Preferably, described scavenging entrance is placed in the lower end of scavenging passage and at cylinder body lower cover position, it is described
Scavenging outlet is placed in the upper end of scavenging passage and with exhausting waste gas passage in same level.Gone out by scavenging entrance, scavenging
Position Design between mouth and exhausting waste gas passage three, can further improve the effect of layered scavenging.
Preferably, air inlet valve support and air inlet valve module are additionally provided with described cylinder block, described air inlet valve support
Air intlet, mixing gas port and scavenging air belt are provided with, described air inlet valve support is arranged on the right side of cylinder block and by air inlet
Valve module is fixedly connected, and described air intlet matches with air duct, and described mixing gas port matches with mixed airway,
Described scavenging air belt and scavenging channels be in accordance.By the design of air inlet valve support and air inlet valve module, it is ensured that air duct and
The reliability of mixed airway is used.
Preferably, being provided with seal washer and first half side cover, described first half at the scavenging passage on front side of the cylinder block
Side cover is matched by seal washer at the scavenging passage on front side of cylinder block and with the scavenging air belt in air inlet valve support, institute
State and seal washer and later half side cover are provided with the scavenging passage on rear side of cylinder block, described later half side cover is installed by seal washer
Match at scavenging passage on rear side of cylinder block and with the scavenging air belt in air inlet valve support, the first half side cover and later half side cover
Structure be that scavenging guide plate is provided with consistent, described scavenging air belt.By the design of first half side cover and rear side cover, can
Guarantee that the safe and reliable of scavenging passage uses.
Preferably, the upper surface center of the cylinder block is provided with the installing hole for installing spark plug, described combustion
Burn room to be placed at the inside center of cylinder block, described piston component includes piston head and piston rod, described piston head is installed
Indoor in burning, the upper end outside of the piston head is provided with piston ring, and the centre of the piston head is provided with piston pin, the piston
The two ends of pin are fixed by jump ring, so being provided with cavity in the middle of the lower end of piston head, needle bearing, institute are provided with described cavity
The needle bearing stated is arranged on piston pin, and one end of the piston rod is arranged on needle bearing, the piston rod it is another
End is connected with Crank connected rod group.Simple structure, it is easy to operate.
Preferably, being additionally provided with stator seat in described cylinder block.
The beneficial effects of the utility model are：Be conducive to stable burning, improve efficiency of combustion, reduce air pollution；
Fundamentally solve fuel and external " mixing loss " of cylinder is discharged without work by combustion, so as to improve the utilization of fuel oil
Rate, reduces fuel consumption, while decreasing the oxious component in waste gas, reduces exhaust emission value.
Description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is three-dimensional cutaway view of the present utility model；
Fig. 3 is configuration schematic diagram of the present utility model；
Fig. 4 is the cross-sectional view in Fig. 1 at AA；
Fig. 5 is the cross-sectional view in Fig. 1 at BB；
Fig. 6 is the cross-sectional view in Fig. 1 at CC.
In figure：1. exhausting waste gas passage, 2. scavenging passage, 3. cylinder block, 4. air duct, 5. scavenging outlet, 6. mix
Air flue, 7. scavenging entrance, 8. cylinder body lower cover, 9. combustion chamber, 10. piston component, 11. bearings, 12. bent axles, 13. crankcases, 14.
Seal washer, 15. first half side covers, 16. later half side covers, 17. air inlet valve modules, 18. air intlets, 19. mixing gas ports, 20. enter
Air valve support, 21. scavenging air belts, 22. Crank connected rod groups, 23. oil sealings, 24. stator seats, 25. piston heads, 26. jump rings, 27. pistons
Pin, 28. needle bearings, 29. piston rings.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and detailed description.
As shown in Figure 1, Figure 2, in the embodiment described in Fig. 3, a kind of two stroke engine layered scavenging component, including cylinder block 3,
Piston component 10, crankcase 13 and cylinder body lower cover 8, are provided with the combustion chamber 9 for installing piston component 10, gas inside cylinder block 3
Cylinder body 3 is connected with cylinder body lower cover 8, and crankcase 13 is placed between cylinder block 3 and cylinder body lower cover 8, and the right side of cylinder block 3 is provided with air
Passage 4 and mixed airway 6, the left side of cylinder block 3 is provided with exhausting waste gas passage 1, and the front side of cylinder block 3 and rear side are provided with scavenging and lead to
Road 2 and symmetrical in front and back, air duct 4 is connected with scavenging passage 2, and mixed airway 6 is connected with crankcase 13, and exhausting waste gas lead to
Road 1 is connected with combustion chamber 9, and scavenging passage 2 is provided with scavenging entrance 7 and scavenging outlet 5, and scavenging entrance 7 is connected with crankcase 13,
Scavenging outlet 5 is connected with combustion chamber 9, and the lateral surface of cylinder block 3 is provided with fin, and fin is to be integrally formed with cylinder block 3
's.Wherein：Stator seat 24 is additionally provided with cylinder block 3.
As shown in Fig. 3, Fig. 6, crankcase 13 includes Crank connected rod group 22, bearing 11, oil sealing 23 and bent axle 12, crankshaft-link rod
Group 22, bearing 11 and oil sealing 23 are installed on bent axle 12, and bent axle 12 is arranged on cylinder block 3 and cylinder by bearing 11 and oil sealing 23
Between body lower cover 8, Crank connected rod group 22 is connected with piston component 10.The upper surface center of cylinder block 3 is provided with for installing fire
The installing hole of Hua Sai, combustion chamber 9 is placed at the inside center of cylinder block 3, and piston component 10 includes piston head and piston rod, piston
Head is arranged in combustion chamber 9, and the upper end outside of piston head 25 is provided with piston ring 29, and the centre of piston head 25 is provided with piston pin 27,
The two ends of piston pin 27 are fixed by jump ring 26, and cavity is provided with the middle of the lower end of piston head 25, and needle bearing 28 is provided with cavity,
Needle bearing 28 is arranged on piston pin 27, and one end of piston rod is arranged on needle bearing 28, the other end and the song of piston rod
Axle connection rod set 22 connects.Scavenging entrance 7 is placed in the lower end of scavenging passage 2 and at the position of cylinder body lower cover 8, and scavenging outlet 5 is put
In the upper end of scavenging passage 2 and with exhausting waste gas passage 1 in same level.
As shown in Fig. 3, Fig. 4, Fig. 5, air inlet valve support 20 and air inlet valve module 17, intake valve are additionally provided with cylinder block 3
Frame 20 is provided with air intlet 18, mixing gas port 19 and scavenging air belt 21, and air inlet valve support 20 is arranged on the right side of cylinder block 3 and leads to
Cross air inlet valve module 17 to be fixedly connected, air intlet 18 matches with air duct 4, mix gas port 19 and the phase of mixed airway 6
Match somebody with somebody, scavenging air belt 21 matches with scavenging passage 2.Seal washer 14 and first half side cover are provided with the scavenging passage 2 of the front side of cylinder block 3
15, first half side cover 15 by seal washer 14 be arranged at the scavenging passage 2 of the front side of cylinder block 3 and with air inlet valve support 20 on
Scavenging air belt 21 matches, and at the scavenging passage 2 of the rear side of cylinder block 3 seal washer 14 and later half side cover 16, later half side cover 16 are provided with
By seal washer 14 be arranged at the scavenging passage 2 of the rear side of cylinder block 3 and with air inlet valve support 20 on the phase of scavenging air belt 21
Match somebody with somebody, first half side cover 15 is consistent with the structure of later half side cover 16, and in scavenging air belt 21 scavenging guide plate is provided with.
When piston component 10 is by arrival top dead centre, mixed airway 6 is to open, and scavenging outlet 5 is closed, and pure air is by sky
Gas passage 4 is entered in scavenging passage 2, and gaseous mixture is entered in crankcase 13 and then by scavenging entrance 7 by mixed airway 6
Enter in scavenging passage 2.When scavenging is carried out, piston component 10 is descending to be run from top dead centre to lower dead center, in crankcase 13
Volume reducing, pressure rises, and now enters into that exist in scavenging passage 2 is not mixed pure by air duct 4
Air；Piston component 10 is continued traveling downwardly, and mixed airway 6 is closed, and exhausting waste gas passage 1 is opened, the high pressure in combustion chamber 9 after burning
Waste gas is automatically drained out outside cylinder block 3, and at the same time scavenging outlet 5 is also opened, and gas compressed Jing scavenging in crankcase 13 enters
Mouthfuls 7 are entered in combustion chamber 9 by scavenging passage 2 by scavenging outlet 5, but initially enter combustion chamber 9 be then stored in sweep
The pure air that the upper end of gas passage 2 is not mixed, it is carried out after blending purging by exhausting waste gas passage 1 with the waste gas in combustion chamber 9
Discharge outside cylinder block 3；In succession with scavenging passage 2 in combustion mixture it is three-in-one enter combustion chamber 9, thus achieve multi-cavity
Air inlet, layered scavenging fundamentally solves " mixing loss " that fuel is discharged outside cylinder block 3 without work by combustion, so as to
The utilization rate of fuel oil is improve, fuel consumption is reduced, while decreasing the oxious component in waste gas, exhaust emission is reduced
Value, reduces air pollution.With the continuation that piston component 10 is moved, process of entirely doing work is completed, so gone round and begun again.
Claims (7)
1. a kind of two stroke engine layered scavenging component, is characterized in that, including cylinder block (3), piston component (10), crankcase
(13) combustion chamber (9) for installing piston component (10) and cylinder body lower cover (8), is provided with inside described cylinder block (3), it is described
Cylinder block (3) be connected with cylinder body lower cover (8), described crankcase (13) is placed between cylinder block (3) and cylinder body lower cover (8),
Air duct (4) and mixed airway (6) are provided with the right side of the cylinder block (3), waste gas row is provided with the left of the cylinder block (3)
Gas passage (1), the front side of the cylinder block (3) and rear side are provided with scavenging passage (2) and symmetrical in front and back, and described air leads to
Road (4) is connected with scavenging passage (2), and described mixed airway (6) is connected with crankcase (13), described exhausting waste gas passage
(1) connect with combustion chamber (9), described scavenging passage (2) is provided with scavenging entrance (7) and scavenging outlet (5), described scavenging
Entrance (7) is connected with crankcase (13), and described scavenging outlet (5) is connected with combustion chamber (9), the outside of the cylinder block (3)
Face is provided with fin, and described fin and cylinder block (3) is integrally formed.
2. a kind of two stroke engine layered scavenging component according to claim 1, is characterized in that, described crankcase
(13) including Crank connected rod group (22), bearing (11), oil sealing (23) and bent axle (12), described Crank connected rod group (22), bearing
(11) it is installed on bent axle (12) with oil sealing (23), described bent axle (12) is by bearing (11) and oil sealing (23) installed in gas
Between cylinder body (3) and cylinder body lower cover (8), described Crank connected rod group (22) is connected with piston component (10).
3. a kind of two stroke engine layered scavenging component according to claim 1 and 2, is characterized in that, described scavenging
Entrance (7) is placed in the lower end of scavenging passage (2) and at cylinder body lower cover (8) position, and described scavenging outlet (5) is placed in scavenging
The upper end of passage (2) and with exhausting waste gas passage (1) in same level.
4. a kind of two stroke engine layered scavenging component according to claim 1, is characterized in that, described cylinder block
(3) air inlet valve support (20) and air inlet valve module (17) are additionally provided with, described air inlet valve support (20) is provided with air intlet
(18) gas port (19) and scavenging air belt (21), is mixed, described air inlet valve support (20) is installed in the right side of cylinder block (3) and passes through
Air inlet valve module (17) is fixedly connected, and described air intlet (18) matches with air duct (4), described mixing gas port
(19) match with mixed airway (6), described scavenging air belt (21) matches with scavenging passage (2).
5. a kind of two stroke engine layered scavenging component according to claim 4, is characterized in that, the cylinder block (3)
Scavenging passage (2) place of front side is provided with seal washer (14) and first half side cover (15), and described first half side cover (15) is by sealing
Scavenging passage (2) place of the packing ring (14) on front side of cylinder block (3) and with air inlet valve support (20) on scavenging air belt (21) phase
Matching, scavenging passage (2) place on rear side of the cylinder block (3) is provided with seal washer (14) and later half side cover (16), it is described after
Scavenging passage (2) place of half side cover (16) by seal washer (14) on rear side of cylinder block (3) and with air inlet valve support
(20) scavenging air belt (21) on matches, the first half side cover (15) be with the structure of later half side cover (16) it is consistent, it is described
Scavenging guide plate is provided with scavenging air belt (21).
6. a kind of two stroke engine layered scavenging component according to claim 2, is characterized in that, the cylinder block (3)
Upper surface center be provided with installing hole for installing spark plug, described combustion chamber (9) is placed in the inside of cylinder block (3)
At the heart, described piston component (10) is including piston head and piston rod, and described piston head is arranged in combustion chamber (9), described
The upper end outside of piston head (25) is provided with piston ring (29), and the centre of the piston head (25) is provided with piston pin (27), the work
The two ends of plug pin (27) are fixed by jump ring (26), so cavity is provided with the middle of the lower end of piston head (25), in described cavity
Needle bearing (28) is provided with, on piston pin (27), one end of the piston rod is arranged on described needle bearing (28)
On needle bearing (28), the other end of the piston rod is connected with Crank connected rod group (22).
7. a kind of two stroke engine layered scavenging component according to claim 1, is characterized in that, described cylinder block
(3) stator seat (24) is additionally provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621175281.5U CN206158843U (en) | 2016-10-26 | 2016-10-26 | Two -stroke -cycle engine layering scavenging subassembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621175281.5U CN206158843U (en) | 2016-10-26 | 2016-10-26 | Two -stroke -cycle engine layering scavenging subassembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206158843U true CN206158843U (en) | 2017-05-10 |
Family
ID=58656336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621175281.5U Active CN206158843U (en) | 2016-10-26 | 2016-10-26 | Two -stroke -cycle engine layering scavenging subassembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206158843U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113107662A (en) * | 2021-05-08 | 2021-07-13 | 永康市茂金园林机械有限公司 | Cylinder piston unit for stratified scavenging two-stroke engine |
-
2016
- 2016-10-26 CN CN201621175281.5U patent/CN206158843U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113107662A (en) * | 2021-05-08 | 2021-07-13 | 永康市茂金园林机械有限公司 | Cylinder piston unit for stratified scavenging two-stroke engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhejiang Risheng Agriculture and Forestry Science and Technology Co.,Ltd. Assignor: NINGBO AOSHENG MACHINE Co.,Ltd. Contract record no.: X2023980053134 Denomination of utility model: A layered scavenging component for two-stroke engines Granted publication date: 20170510 License type: Common License Record date: 20231219 |
|
| EE01 | Entry into force of recordation of patent licensing contract |