CN2139994Y - Two-stroke engine separating scavenging device - Google Patents
Two-stroke engine separating scavenging device Download PDFInfo
- Publication number
- CN2139994Y CN2139994Y CN 92222707 CN92222707U CN2139994Y CN 2139994 Y CN2139994 Y CN 2139994Y CN 92222707 CN92222707 CN 92222707 CN 92222707 U CN92222707 U CN 92222707U CN 2139994 Y CN2139994 Y CN 2139994Y
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- China
- Prior art keywords
- air
- scavenging
- crankcase
- air conduit
- stroke engine
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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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Abstract
A two-stroke engine separating scavenging device is additionally provided with an air conduit outside of a crankcase and a cylinder, and a linked operating mechanism controls the action of an air control valve in the air inlet end of the air conduit and an air control shutter 6 in a carburetor 5 at the same time; the air inlet end of the air conduit is provided with a leaf valve 2, and the lower part of the air conduit is provided with a hole 8 to communicated with the crankcase, and the upper part is connected with an air scavenging crossing near an air exhaust opening. The two-stroke engine can obtain a purpose that reliable operation, a remarkable effect to save energy and reducing the noxious discharge with the separating scavenging device with a simple structure.
Description
The utility model belongs to the scavenging arrangement of two-stroke gasoline engine.
In traditional two-stroke gasoline engine, its loop scavenging process all causes fuel loss owing to there being part fresh charge (incoming mixture) to discharge cylinder with waste gas, and noxious emission index height.Internal combustion engine person both domestic and external is for addressing this problem a large amount of experimental study work of having done.Begin to have occurred the leading air scavenging mode such as fuel injection mode, G.P.BLair, multiple stratiform scavenging mode etc. in recent years.These new scavenging modes all have tangible oil-saving effect, but complicated electronics or the machine control unit of the needs that have one cover, the fuel oil under the various operating modes of motor that has is not ideal enough with the air coupling, have consequently limited their applying in practice.
The utility model aim to provide a kind of in scavenging process with the part air drive waste gas, to reduce fuel consumption and noxious emission amount and two-stroke gasoline engine simple in structure, reliable operation.
The utility model is realized its purpose as follows: install an air conduit additional in the outside of crankcase and cylinder body, interlock operating mechanism 4 can be controlled the air-regulating valve that is arranged in the air conduit inlet end simultaneously and be positioned at the closure action of Carburetor, the bottom of air conduit has an aperture to communicate with crankcase, and top is connected with close air exhaust air scavenging road junction; The air scavenging road junction is between mixed gas scavenging road junction and relief opening.
Two-stroke gasoline engine of the present utility model is separated scavenging arrangement, only needing to add on general two-stroke gasoline engine a small amount of simple mechanism gets final product, simple and reasonable for structure, reliable, oil-saving effect is remarkable, reduced the pollution of noxious emission, and still can adopt original Mixed lubrication, made, used all very convenient the two-stroke gasoline engine of original employing Mixed lubrication mode to environment.
Embodiment further specifies the utility model below in conjunction with accompanying drawing:
Fig. 1 is the structural representation that this two-stroke gasoline engine is separated scavenging arrangement.
Fig. 2 is the cross-sectional top view of cylinder.
Figure hollow core arrow, black arrow and dual arrow are represented the flow direction of air, fuel oil and mixed gas respectively.One air conduit 1 is arranged outside crankcase 9 and cylinder body 11, and pipeline advances air end air-regulating valve 3 and leaf valve 2, and air-regulating valve 3 and the closure 6 that is positioned at Carburetor 5 are by operating mechanism 4 gang switches that link; The bottom of air conduit 1 has an aperture 8 to communicate with crankcase 9; Is mixing between scavenging road junction 12 and the relief opening 14 at air scavenging road junction 13.In intake process, piston 10 is up, produce negative pressure in the crankcase 9, leaf valve 2,7 is opened automatically, the most of pure air of duty gas charge forms mixed gass by Carburetor 5, closure 6, leaf valve 7 and required whole fuel oils and enters crankcase 9, and the pure air of fraction of duty gas charge enters air conduit through air-regulating valve 3, leaf valve 2, and in this storage.In scavenging process, piston 10 is descending, crankcase 9 and air conduit 1 pressure raise, leaf valve 2,7 cuts out automatically, mixed gass in the crankcase 9 enter cylinder by mixed gas scavenging road junction 12, and the air that is stored in air conduit 1 also is compressed under same pressure signal effect and enters cylinder by air scavenging road junction 13; Since the position at air scavenging road junction 13 than mixed gas scavenging road junction 12 more near relief opening 14, air stream can form a separate layer between mixed airflow and exhaust flow, during exhaust under the influence of exhaust flow, take the lead in flowing to relief opening 14, short-circuit loss when therefore the part air has served as scavenging, avoid the direct short-circuit loss of part fresh charge, reached the purpose of fuel-economizing; Owing to unburned fuel in the exhaust gas composition reduces, reduced simultaneously so the composition of noxious emission HC is also corresponding.
Following table is a two-stroke gasoline engine that adopts to separate scavenging arrangement and the stand test data contrast of not installing the former motor of separating scavenging arrangement additional:
Claims (1)
1, a kind of separation scavenging arrangement of two-stroke gasoline engine, it is characterized in that installing an air conduit 1 additional in the outside of crankcase 9 and cylinder body 11, interlock operating mechanism 4 can be controlled air-regulating valve 3 that is arranged in air conduit 1 inlet end and the closure that is positioned at Carburetor 56 actions simultaneously; The inlet end of air conduit 1 has leaf valve 2, and the bottom has an aperture 8 to communicate with crankcase 9, and top is connected with the air scavenging road junction 13 of close relief opening 14; Air scavenging road junction 13 is between mixed gas scavenging road junction 12 and relief opening 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92222707 CN2139994Y (en) | 1992-05-20 | 1992-05-20 | Two-stroke engine separating scavenging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92222707 CN2139994Y (en) | 1992-05-20 | 1992-05-20 | Two-stroke engine separating scavenging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2139994Y true CN2139994Y (en) | 1993-08-11 |
Family
ID=33768940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92222707 Expired - Fee Related CN2139994Y (en) | 1992-05-20 | 1992-05-20 | Two-stroke engine separating scavenging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2139994Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298971C (en) * | 2002-09-06 | 2007-02-07 | 安德烈亚斯·斯蒂尔两合公司 | Operation method of two-stroke engine fitted with mixed-gas sunction device |
| CN100451321C (en) * | 2003-10-01 | 2009-01-14 | 安德烈亚斯.斯蒂尔两合公司 | Carburetor arrangement |
| CN1616801B (en) * | 2003-11-12 | 2010-06-02 | 安德烈亚斯.斯蒂尔两合公司 | Two-stroke engine |
| CN108571399A (en) * | 2017-03-14 | 2018-09-25 | 通用电气公司 | Air-fuel ratio regulation for internal combustion engine |
-
1992
- 1992-05-20 CN CN 92222707 patent/CN2139994Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298971C (en) * | 2002-09-06 | 2007-02-07 | 安德烈亚斯·斯蒂尔两合公司 | Operation method of two-stroke engine fitted with mixed-gas sunction device |
| CN100451321C (en) * | 2003-10-01 | 2009-01-14 | 安德烈亚斯.斯蒂尔两合公司 | Carburetor arrangement |
| CN1616801B (en) * | 2003-11-12 | 2010-06-02 | 安德烈亚斯.斯蒂尔两合公司 | Two-stroke engine |
| CN108571399A (en) * | 2017-03-14 | 2018-09-25 | 通用电气公司 | Air-fuel ratio regulation for internal combustion engine |
| CN108571399B (en) * | 2017-03-14 | 2021-12-28 | 通用电气公司 | Air-fuel ratio adjustment for internal combustion engines |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |