CN202914172U - Two-stroke stratified scavenging gasoline engine - Google Patents
Two-stroke stratified scavenging gasoline engine Download PDFInfo
- Publication number
- CN202914172U CN202914172U CN2012206688454U CN201220668845U CN202914172U CN 202914172 U CN202914172 U CN 202914172U CN 2012206688454 U CN2012206688454 U CN 2012206688454U CN 201220668845 U CN201220668845 U CN 201220668845U CN 202914172 U CN202914172 U CN 202914172U
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- Prior art keywords
- scavenging
- air
- cylinder body
- storage chamber
- gas storage
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- 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
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Abstract
The utility model discloses a two-stroke stratified scavenging gasoline engine, and relates to the technical field of engines. The two-stroke stratified scavenging gasoline engine comprises a cylinder body, a crank case, an air intake tube, and a carburetor, wherein an air inlet, an exhaust port, secondary scavenging ducts and an air storage room are arranged on the cylinder body; the secondary scavenging ducts are connected with the air storage room; a scavenging opening is arranged above the secondary scavenging ducts inside the air storage room; a primary scavenging duct is respectively connected to two sides of the cylinder body; an air channel is arranged above the air inlet; the air channel is directly connected with an air circulating groove on the primary scavenging duct; the air channel is connected with the air storage room, and two secondary scavenging ducts of the cylinder body are arranged and symmetrical about the center of the cylinder body. By adopting the structure, the two-stroke stratified scavenging gasoline engine has the advantages of being low in oil consumption, low in discharge, low in cost, and good in stability.
Description
Technical field
The utility model relates to technical field of engines, particularly relates to a kind of two-stroke layered-scavenging petrol engine.
Background technique
Existing two-stroke gasoline engine is power per liter height, smooth running, reliable operation not only, and volume is little, lightweight, cost is low, and structure and manufacturing are simple.Therefore, be widely used in the fields such as graden machine, equipment for plant protection, peasant's machine.Simultaneously the characteristics such as, maintaining convenience few because of its amount of parts, low price are accepted by numerous clients.But along with increasingly sharpening of World Environment Problems; conventional small two-stroke petrol engine is because having the shortcoming of a series of harm environment such as oil consumption height, original discharge value height and the energy; make in the world some developed countries and regional large-scale production of having to put into effect severe relevant law, its continuous expansion of regulatory control, even the cancellation two-stroke gasoline engine.The small utility gasoline engine that is used in the market equipment for plant protection and graden machine; machine that European II stage and U.S. EPA II stage require and few be can satisfy, and the logical machine company of the countries such as Japan, Germany, the U.S. and Taiwan and domestic individual proprietorship, joint venture mainly concentrated on.The part type of domestic minority enterprise can satisfy emission request, but original discharge value is higher, HC+NO
XDischarge value be 80-120g/KWh, even higher.The means of emission control mainly reduce discharging by adding catalyst in external purification-baffler except optimizing cylinder body, this kind means poor stability is stricter to the catalyst requirement, needs the PLT on line control to guarantee discharging.
The model utility content
In order to solve the above-mentioned problems in the prior art, the utility model provides the two-stroke layered-scavenging petrol engine of a kind of low oil consumption, low emission, low cost, good stability.
The utility model two-stroke layered-scavenging petrol engine, comprise cylinder body, crankcase, suction tude, Carburetor, be provided with suction port, relief opening, secondary scavenging air belt and gas storage chamber on the cylinder body, described secondary scavenging air belt links to each other with gas storage chamber, secondary scavenging air belt top is provided with scavenging port in the described gas storage chamber, described cylinder body both sides respectively connect a main scavenging air belt, above described suction port, air passageways is set, described air passageways directly connects the air flow channel on the main scavenging air belt, and described air passageways links to each other with described gas storage chamber; The secondary scavenging air belt of described cylinder body is two and about the cylinder body Central Symmetry.
Described air passageways is two and about the cylinder body Central Symmetry.
Described gas storage chamber is about the cylinder body Central Symmetry.
Described cylinder body connects suction tude, and described suction tude is provided with miscella vent and air vent, and described air passageways is communicated with the air vent, and described suction port is communicated with the miscella vent.
Described suction tude links to each other by the air breathing pipe with the air filter inner cover.
Described secondary scavenging air belt, air passageways are communicated with crankcase.
The utility model compared with prior art has the advantage of low oil consumption, low emission, low cost, good stability.
Description of drawings
Fig. 1 is the petrolic isometric cutaway view of the utility model two-stroke layered-scavenging;
Fig. 2 is the plan view of the secondary scavenging air belt of two-stroke layered-scavenging petrol engine shown in Figure 1;
Fig. 3 is the plan view of two-stroke layered-scavenging petrol engine master scavenging air belt shown in Figure 1;
Fig. 4 is the plan view of two-stroke layered-scavenging petrol engine master scavenging air belt shown in Figure 1.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
Such as Fig. 1, Fig. 2, Fig. 3, shown in Figure 4: 1, air passageways, 2, cylinder body, 3, relief opening, 4, piston, 5, crankshaft-link rod, 6, crankcase, 7, suction tude, 8, the air breathing pipe, 9, air vent 10, air filter inner cover, 11, miscella vent, 12 suction ports, 13, scavenging port, 14, gas storage chamber, 15, secondary scavenging air belt, 16, main scavenging air belt, 17 air flow channel.
The utility model comprises cylinder body, crankcase, suction tude, Carburetor, be provided with suction port, relief opening, secondary scavenging air belt and gas storage chamber on the cylinder body, described secondary scavenging air belt links to each other with gas storage chamber, secondary scavenging air belt top is provided with scavenging port in the described gas storage chamber, described cylinder body both sides respectively connect a main scavenging air belt, above described suction port air passageways is set, described air passageways directly connects the air flow channel on the main scavenging air belt, and described air passageways links to each other with described gas storage chamber; The secondary scavenging air belt of described cylinder body is two and about the cylinder body Central Symmetry.Described air passageways is two and about the cylinder body Central Symmetry; Described gas storage chamber is about the cylinder body Central Symmetry; Described cylinder body connects suction tude, and described suction tude is provided with miscella vent and air vent, and described air passageways is communicated with the air vent, and described suction port is communicated with the miscella vent; Described suction tude links to each other by the air breathing pipe with the air filter inner cover; Described secondary scavenging air belt, air passageways are communicated with crankcase.
The petrolic working principle of the utility model two-stroke layered-scavenging is:
When described piston stroking upward, because be negative pressure this moment in the crankcase, the pure air of a part enters air passageways on the cylinder body by the flow through air vent of suction tude of the suction port on the air filter inner cover, and the air flow channel of pure air on main scavenging air belt in the air passageways enters the top of described gas storage chamber; The pure air of a part forms the miscella vent that mixed gas enters suction tude by the suction port on the air filter inner cover through the mixing of Carburetor, enter crankcase inside by the enterprising gas port of cylinder body, the secondary scavenging air belt of partially mixed oil on cylinder body enters the bottom of gas storage chamber; Until described piston is when walking to top dead center, air inlet finishes.Until during the suction port on the described cylinder body, the mixed gas in the inlet close, crankcase begins compression, mixed gas enters the gas storage chamber that arranges on the described cylinder body through the secondary scavenging air belt on the cylinder body when described descent of piston; When piston continues when descending, the scavenging port that arranges on the described cylinder body is opened, gas in the gas storage chamber enters cylinder interior and carries out scavenging, because described gas storage chamber top is pure air, so in the by force inner in advance scavenging in firing chamber of the pure air inflow of scavenging period cylinder body.
Claims (6)
1. two-stroke layered-scavenging petrol engine, comprise cylinder body, crankcase, suction tude, Carburetor, be provided with suction port, relief opening, secondary scavenging air belt and gas storage chamber on the described cylinder body, described secondary scavenging air belt links to each other with gas storage chamber, secondary scavenging air belt top is provided with scavenging port in the described gas storage chamber, described cylinder body both sides respectively connect a main scavenging air belt, it is characterized in that: above described suction port, air passageways is set, described air passageways directly connects the air flow channel on the main scavenging air belt, and described air passageways links to each other with described gas storage chamber; The secondary scavenging air belt of described cylinder body is two and about the cylinder body Central Symmetry.
2. two-stroke layered-scavenging petrol engine according to claim 1 is characterized in that: described air passageways is two and about the cylinder body Central Symmetry.
3. two-stroke layered-scavenging petrol engine according to claim 1, it is characterized in that: described gas storage chamber is about the cylinder body Central Symmetry.
4. two-stroke layered-scavenging petrol engine according to claim 1, it is characterized in that: described cylinder body connects suction tude, described suction tude is provided with miscella vent and air vent, and described air passageways is communicated with the air vent, and described suction port is communicated with the miscella vent.
5. two-stroke layered-scavenging petrol engine according to claim 1, it is characterized in that: described suction tude links to each other by the air breathing pipe with the air filter inner cover.
6. two-stroke layered-scavenging petrol engine according to claim 1, it is characterized in that: described secondary scavenging air belt, air passageways are communicated with crankcase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206688454U CN202914172U (en) | 2012-12-07 | 2012-12-07 | Two-stroke stratified scavenging gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206688454U CN202914172U (en) | 2012-12-07 | 2012-12-07 | Two-stroke stratified scavenging gasoline engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202914172U true CN202914172U (en) | 2013-05-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206688454U Expired - Fee Related CN202914172U (en) | 2012-12-07 | 2012-12-07 | Two-stroke stratified scavenging gasoline engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202914172U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111305949A (en) * | 2019-05-24 | 2020-06-19 | 梁刚 | Direct-current layered scavenging two-stroke engine |
-
2012
- 2012-12-07 CN CN2012206688454U patent/CN202914172U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111305949A (en) * | 2019-05-24 | 2020-06-19 | 梁刚 | Direct-current layered scavenging two-stroke engine |
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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: 20130501 Termination date: 20151207 |
|
| EXPY | Termination of patent right or utility model |