CN204082410U - Small-sized low emission directly sprays two-stroke gasoline engine - Google Patents
Small-sized low emission directly sprays two-stroke gasoline engine Download PDFInfo
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- CN204082410U CN204082410U CN201420551661.9U CN201420551661U CN204082410U CN 204082410 U CN204082410 U CN 204082410U CN 201420551661 U CN201420551661 U CN 201420551661U CN 204082410 U CN204082410 U CN 204082410U
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- suction tude
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Abstract
The utility model discloses a kind of small-sized low emission and directly spray two-stroke gasoline engine, comprise cylinder body, crankcase, suction tude, Carburetor and balance tube.The utility model solves the defect of the aspects such as existing small two-stroke Fuel Consumption of Gasoline Engine is high, emission performance is poor, particular avoid use in baffler add that catalyst is poor to the stability reducing discharge and bring, cost of production and high adverse effect of controlling cost, and the engine lubrication of layered scavenging technology is poor, high temperature is unstable and produce drawback rambunctious.The small-sized low-discharge two-stroke petrol engine that the utility model provides, adopts the method directly to firing chamber injected fuel, decreases the fuel oil escape because scavenging short circuit causes, reaches the object reducing oil consumption and discharge.
Description
Technical field
The utility model belongs to a kind of internal-combustion engine, particularly, relates to a kind of small-sized low emission and directly sprays two-stroke gasoline engine.
Background technique
Small two-stroke petrol engine precipitates and accumulation through the technology of last 100 years, makes it have many advantages.Not only power per liter is high for it, smooth running, reliable operation, and volume is little; lightweight, cost is low, and structure is simple, is convenient to manufacture; maintaining is convenient and simple, is therefore widely used in the fields such as graden machine, equipment for plant protection, little agricultural machinery, is subject to liking of client.
But along with increasingly sharpening of World Environment Problems, conventional small two-stroke petrol engine is because of the problem of a series of harm environment such as oil consumption is high, raw emissions is poor and the energy, make some developed countries and regions in the world constantly put into effect tough laws, regulation, control the scale that it constantly expands.
In the market for the small utility gasoline engine of equipment for plant protection and graden machine; the machine of European II stage and U.S. EPA requirement can be met and few, and mainly concentrate on the Tong Ji company of the countries such as Japan, Germany, the U.S. and Taiwan and domestic individual proprietorship, joint venture.The part type of domestic minority enterprise can meet emission request, but raw emissions is higher, and HC+NOX is at 80-120g/KWh, even higher.The means of emission control except optimization cylinder body outer mainly through external purification---add catalyst in-baffler to reduce discharge, this kind of engine heat load is high, poor stability, and stricter to catalyst requirement; Also have some domestic enterprises to imitate one after another the layered scavenging technology that Japanese Komatsu researches and develops, but great majority are all not too successful, quality of product is uneven, and need PLT on line control to guarantee discharge, cost of production is too high.
Research and development can pass on the advantage of two-stroke gasoline engine, can stablize again, solve defect in two-stroke gasoline engine, raw emissions value height high in oil consumption reliably, meeting the motor of Europe and the up-to-date emission regulation demands of the U.S., is the direction that contemporary gasoline machine people constantly makes great efforts.
Model utility content
In order to the defect of the aspects such as the small two-stroke Fuel Consumption of Gasoline Engine solving existing routine is high, emission performance is poor, particular avoid use in baffler add that catalyst is poor to the stability reducing discharge and bring, cost of production and high adverse effect of controlling cost.The utility model provides a kind of small-sized straight spray two-stroke gasoline engine.
The small-sized straight spray two-stroke gasoline engine of the utility model, comprise cylinder body, crankcase, suction tude, Carburetor and balance tube, in described cylinder body, piston is set, described piston is connected with crankshaft-link rod by wrist pin, and described cylinder body is provided with suction port, relief opening, scavenging air belt, negative pressure hole, jet, accumulator, joint and equalizing orifice; Described accumulator is communicated with cylinder interior firing chamber by jet, and described accumulator is communicated with crankcase by pipeline, and the side of described accumulator is provided with passage and fittings; Described equalizing orifice is directly communicated with cylinder interior; Described Carburetor is provided with main oil gallery and independent connects oil head, and described main oil gallery is connected with described suction tude; Described suction tude is provided with one-way valve, and described suction tude is connected with accumulator, and the joint in described suction tude is communicated with the equalizing orifice in suction tude; Described equalizing orifice is communicated with the equalizing orifice on cylinder body; Described balance tube one end is connected with the joint on cylinder body, and the other end is connected with the joint in suction tude; Described Carburetor, except having mixing chamber and negative pressure joint, is also provided with independent oil duct, is connected with the one-way valve that suction tude is arranged by oily joint.
?the utility model has following advantage compared with existing low emission technology:
1). the method for traditional settling-discharging is the way that optimization engine structure and baffler interpolation catalyst combine, the fuel oil of this kind of method is introduced into crankcase after being atomized by Carburetor, combustion chambers burn is entered into again through scavenging air belt, in way, part incoming mixture is not burnt and is directly escaped by relief opening, cause fuel loss, increase the weight of exhaust emission, power per liter reduces, effulent turn increases the heat load of motor after catalyst combustion simultaneously, and the oil burning jet from Carburetor is directly mapped in firing chamber by the jet on cylinder body described in the utility model, thoroughly avoid the problem that incoming mixture is escaped by relief opening, greatly reduce oil consumption and discharge.
2). compared with layered scavenging technology, this model utility structure is more simple, and fuel oil utilizes more efficient, is convenient to quality control in production process.
3). the utility model utilizes the oil feeding system of the rule change control machine of motor therein pressure, and structure is simple, is easy to produce, and is convenient to form large batch of product.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is the flanged surface schematic diagram of 4 cylinder bodies described in Fig. 1;
Fig. 3 is the flanged surface schematic diagram of 3 suction tude described in Fig. 1;
Fig. 4 is the schematic diagram of 2 Carburetors described in Fig. 1;
Fig. 5 is that piston moves upward to position view when balancing air holes is opened by piston skirt from lower dead center;
Fig. 6 is about to the position view of relief opening when just opening under piston is continued by top dead center;
Fig. 7 continues descending position view when being opened by jet after piston opens relief opening;
Fig. 8 is that piston continues from lower dead center to be up to the position view of closing before jet.
In figure: 1, air filter inner cover, 2, Carburetor, 3, suction tude, 4, cylinder body, 5, baffler, 6, balance tube, 7, negative pressure hole, 8, suction port, 9, jet, 10, accumulator, 11, joint (cylinder body), 12, equalizing orifice (cylinder body), 13, equalizing orifice (suction tude), 14, joint (suction tude), 15, one-way valve, 16, suction port, 17, negative pressure hole, 18, oily joint, 19, mixing chamber, 20, negative pressure joint, 21, crankcase, 22, piston.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail
As shown in drawings, the utility model directly sprays two-stroke gasoline engine, comprises cylinder body 4 and suction tude 3 and balance tube 6; On described cylinder body 4 except being provided with negative pressure hole 7, suction port 8, be also provided with jet 9, accumulator 10, joint 11 and equalizing orifice 12; Described suction tude 3 is provided with equally negative pressure hole 17, suction port 16, equalizing orifice 13, also has joint 14 and one-way valve 15 in addition; Described Carburetor 2 is provided with independent oily joint 19.
Accumulator 10 on described cylinder body 4 is communicated with jet 9, and jet 9 is communicated with cylinder interior; The side of accumulator 10 has passage to be communicated with joint 11; Equalizing orifice 12 is also directly communicated with cylinder body 4 inside in addition.
The one-way valve 15 that described suction tude 3 is installed is communicated with accumulator 10, and can only open to accumulator 10 side; Joint 14 is communicated with equalizing orifice 13; Equalizing orifice 13 is communicated with the equalizing orifice 12 of cylinder body 4.
Described balance tube 6 one end is connected with joint 11, and the other end is connected with joint 14.
Described Carburetor 2, except having mixing chamber 19 and negative pressure joint 20, is also provided with independent oil duct, is connected with the one-way valve 15 that suction tude 3 is installed by oily joint 18.
The working principle of the utility model layered scavenging two-stroke gasoline engine is:
1) when piston 22 moves upward from lower dead center, negative pressure is formed gradually in crankcase 21, when the equalizing orifice 12 on cylinder body 4 is opened by piston 22 skirt section (as shown in Figure 5), negative pressure is delivered to equalizing orifice 13 from equalizing orifice 12, the joint 11 of cylinder body is delivered to again through joint 14 and balance tube 6, pass to accumulator 10 again, accumulator 10 is connected with individual event valve 15, one-way valve 15 is opened by the elastic force that negative pressure overcomes one-way valve 15, negative pressure and then be delivered to the Carburetor 2 be connected with suction tude 3, part oil burning jet is mapped in accumulator 10 by Carburetor 2 under the effect of negative pressure.
2) piston 22 described in continues up, by descending after top dead center (as shown in Figure 6), first exhaust valve is opened, discharge section High Temperature High Pressure waste gas, then jet 9 is opened (as shown in Figure 7), high temperature and high pressure gas enters into accumulator 10 instantaneously and then enters in balance tube 6, the fuel Heating vaporization that accumulator 10 li stores by high temperature and high pressure gas in advance.Meanwhile, because piston 22 is descending, crankcase 21 internal pressure rises rapidly, and pressure is entered in balance tube 6 by the equalizing orifice 12 of cylinder body and suction tude 3.Waste gas in cylinder continues to discharge from relief opening, and piston 22 is then opened scavenging air belt, the waste gas that cleaning is residual further, supplements the fresh air that next circulation needs in cylinder body simultaneously.
3) along with piston 22 is descending and pass through lower dead center, in up process, in-cylinder pressure declines rapidly, in balance tube 6, inflammable mixture passes through in jet 9 spirt cylinder body firing chamber (as shown in Figure 8) under the effect of crankcase pressure, piston 22 is about to all gas ports on continuing and is closed and carry out compressing, lighting a fire, equalizing orifice 12 is opened by piston skirt again simultaneously, and motor starts new work cycle.
Claims (1)
1. a small-sized straight spray two-stroke gasoline engine, comprise cylinder body, crankcase, suction tude, Carburetor and balance tube, in described cylinder body, piston is set, described piston is connected with crankshaft-link rod by wrist pin, it is characterized in that: described cylinder body is provided with suction port, relief opening, scavenging air belt, negative pressure hole, jet, accumulator, joint and equalizing orifice; Described accumulator is communicated with cylinder interior firing chamber by jet, and described accumulator is communicated with crankcase by pipeline, and the side of described accumulator is provided with passage and fittings; Described equalizing orifice is directly communicated with cylinder interior; Described Carburetor is provided with main oil gallery and independent connects oil head, and described main oil gallery is connected with described suction tude; Described suction tude is provided with one-way valve, and described suction tude is connected with accumulator, and the joint in described suction tude is communicated with the equalizing orifice in suction tude; Described equalizing orifice is communicated with the equalizing orifice on cylinder body; Described balance tube one end is connected with the joint on cylinder body, and the other end is connected with the joint in suction tude; Described Carburetor, except having mixing chamber and negative pressure joint, is also provided with independent oil duct, is connected with the one-way valve that suction tude is arranged by oily joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420551661.9U CN204082410U (en) | 2014-09-25 | 2014-09-25 | Small-sized low emission directly sprays two-stroke gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420551661.9U CN204082410U (en) | 2014-09-25 | 2014-09-25 | Small-sized low emission directly sprays two-stroke gasoline engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204082410U true CN204082410U (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420551661.9U Expired - Fee Related CN204082410U (en) | 2014-09-25 | 2014-09-25 | Small-sized low emission directly sprays two-stroke gasoline engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204082410U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022236478A1 (en) * | 2021-05-08 | 2022-11-17 | 永康市茂金园林机械有限公司 | Stratified scavenging two-stroke engine |
-
2014
- 2014-09-25 CN CN201420551661.9U patent/CN204082410U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022236478A1 (en) * | 2021-05-08 | 2022-11-17 | 永康市茂金园林机械有限公司 | Stratified scavenging two-stroke engine |
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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: SHANDONG YONGJIA POWER CO., LTD. Free format text: FORMER OWNER: LINYI SANHE YONGJIA POWER CO., LTD. Effective date: 20150327 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 276000 LINYI, SHANDONG PROVINCE TO: 276025 LINYI, SHANDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150327 Address after: 276025 south section of Kunming Road, Linyi Economic Development Zone, Shandong Patentee after: SHANDONG YONGJIA POWER CO., LTD. Address before: 276000 middle section of Huang Huang Road, Lanshan street, Lanshan District, Shandong, Linyi Patentee before: Linyi Sanhe Yongjia Power Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20150925 |
|
| EXPY | Termination of patent right or utility model |