CN201474735U - Overhead outward-opening distribution two-stroke engine - Google Patents
Overhead outward-opening distribution two-stroke engine Download PDFInfo
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- CN201474735U CN201474735U CN2009201708267U CN200920170826U CN201474735U CN 201474735 U CN201474735 U CN 201474735U CN 2009201708267 U CN2009201708267 U CN 2009201708267U CN 200920170826 U CN200920170826 U CN 200920170826U CN 201474735 U CN201474735 U CN 201474735U
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- air inlet
- seat mouth
- exhaust
- dress
- open
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Abstract
The utility model discloses an overhead outward-opening distribution two-stroke engine, which is characterized in that a reverse outward-opening air inlet seat port arranged on a cylinder cover is communicated with an air inlet, a reverse outward-opening air inlet valve is mounted at the reverse outward-opening air inlet seat port, the cylinder cover is provided with an exhaust seat port communicated with an air outlet, an exhaust value is mounted at the exhaust seat port, an air inlet bunching structure and/or a guide structure is arranged, the air inlet bunching structure is mounted on the reverse outward-opening air inlet seat port or on the cylinder cover at the reverse outward-opening air inlet seat port, the guide structure is mounted between the reverse outward-opening air inlet seat port and the exhaust seat port, the reverse outward-opening air inlet seat port is opened and closed by the reverse outward-opening air inlet valve under control of a two-stroke air inlet timing control device, and the exhaust seat port is opened and closed by the exhaust valve under control of the two-stroke air inlet timing control device. The overhead outward-opening distribution two-stroke engine is capable of reducing loss of distribution throttling, and increasing degree of air flow and gas mixing, thereby increasing efficiency of the engine.
Description
Technical field
The utility model relates to engine art.
Background technique
How precisely efficient for engines distribution is to improve engine efficiency and improve one of topmost technological means of the motor feature of environmental protection, therefore, research in this respect also is very active.Open in the distribution seat mouth of conventional engines and the valve body (valve just), such structure truly has benefit for the sealing that improves between distribution seat mouth and the valve body, but in open valve body structure and make air current flow, airflow area and the design of distribution opening hours all be subjected to serious restriction.Therefore, in order fundamentally to solve the distribution problem of motor, need a kind of new motor of invention.
Summary of the invention
In order to overcome above-mentioned defective, the utility model discloses a kind of overhead outside opening gas distribution two-stroke engine.The purpose of this utility model is achieved in that
A kind of overhead outside opening gas distribution two-stroke engine, comprise intake duct, air outlet flue and cylinder head, anti-dress external-open air inlet seat mouth is set on described cylinder head, described anti-dress external-open air inlet seat mouth is communicated with described intake duct, the place establishes anti-dress external-open air inlet valve body at described anti-dress external-open air inlet seat mouth, the exhaust seat mouth is set on described cylinder head, described exhaust seat mouth is communicated with described air outlet flue, the place establishes exhaust valve at described exhaust seat mouth, air inlet bundle structure and/or flow guide structure body are set, described air inlet bundle structure be arranged on the described anti-dress external-open air inlet seat mouth or the described cylinder head at described anti-dress external-open air inlet seat mouth place on, described flow guide structure body is arranged between described anti-dress external-open air inlet seat mouth and the exhaust seat mouth, described anti-dress external-open air inlet valve body is opened or closed described anti-dress external-open air inlet seat mouth by the control of two-stroke air inlet arrangement for controlling timing, and described exhaust valve is opened or closed described exhaust seat mouth by the control of two-stroke exhaust arrangement for controlling timing.
Described exhaust seat mouth is made as anti-dress external-open exhaust seat mouth, and described exhaust valve is made as anti-dress external-open exhaust valve.
Described exhaust seat mouth is made as and opens the exhaust seat mouth in the formal dress, and described exhaust valve is made as the air valve body that begins to rehearse in the formal dress.
Described two-stroke air inlet arrangement for controlling timing is made as electromagnetic type, mechanical type or hydraulic type, and described two-stroke exhaust arrangement for controlling timing is made as electromagnetic type, mechanical type or hydraulic type.
The valve of conventional engines be formal dress, in open; And valve body of the present utility model (valve that is equivalent to conventional engines) is anti-that adorn, external-open; Accordingly, the air inlet seat ring of conventional engines be formal dress, in open, and air inlet seat mouth of the present utility model (the air inlet seat ring that is equivalent to conventional engines) be anti-dress, external-open.The disclosed overhead outside opening gas distribution two-stroke engine of the utility model, owing to adopted anti-dress external-open valve body, valve body and piston do not have the danger of collision, so the stroke opening time of valve body and the design of shut-in time all have suitable flexibility, can reduce the distribution restriction loss like this, make air current flow in the cylinder better and then make the degree of combustion gas mixing higher, thereby improve the efficient of motor.Utilize this structure, cover when air inlet valve body and exhaust valve are set, open valve body in the comparable tradition of aperture diameter and obviously strengthen at engine cylinder.Owing to be subjected to the effect of cylinder inner high voltage, the anti-external-open valve body of adorning is subjected to sizable thrust, so the counter driving mechanism of adorning external-open valve body should have suitable pressure to offset the pressure of cylinder to anti-dress external-open valve body to anti-dress external-open valve body, guarantees sealing.
The disclosed overhead outside opening gas distribution two-stroke engine of the utility model because externally opened valve body can effectively form the intake and exhaust separating surface, thereby reduces the mixing of intake and exhaust in cylinder, plays the effect of efficient scavenging, efficient distribution.In order further to improve the efficient of scavenging, distribution, can on the anti-dress external-open air inlet seat mouth or on the counter cylinder head of adorning external-open air inlet seat mouth place the air inlet bundle structure be set, also can between anti-dress external-open air inlet seat mouth and exhaust seat mouth, the flow guide structure body be set, air inlet bundle structure and flow guide structure body perhaps are set simultaneously.So-called air inlet bundle structure is meant that the inboard has the structure of cylndrical surface air-flow guide section, and this cylndrical surface air-flow guide section can be arranged on the anti-dress external-open air inlet seat mouth, also can be arranged on the cylinder head of anti-dress external-open air inlet seat mouth lower end.So-called flow guide structure body is meant that convection cell (gas) has the structure of leading role, such as being arranged to guide plate or guide channel.The purpose that air inlet bundle structure or flow guide structure body are set be make as much as possible air inlet before diffusion more the degree of depth flow to cylinder bottom, near or reach near the piston head that is in the lower dead center, scavenging, distribution efficient are further improved.Two-stroke arrangement for controlling timing in the utility model can be electromagnetic type, mechanical type or hydraulic type control gear.For example, mechanical control device can be cam and Returnning spring, and the rotating speed of camshaft is made as with the speed of crankshaft of motor and equates.This kind two stroke engine, not only can give full play to the advantage of traditional two stroke engine, the inferior position (as gas phase channelling problem etc.) of evading traditional two stroke engine, the advantage that can also make full use of modern four stroke engine (for example, VVT-i technology, changeable compression ratio technique etc.), therefore, have that volume is little, in light weight, efficient is high, advantage such as few discharges pollutants.
The utility model has following actively useful effect:
1, the utility model is simple in structure, with low cost.
2, the utility model can reduce the distribution restriction loss, and the interior air current flow of cylinder and the degree of combustion gas mixing are improved, thereby improves the efficient of motor.
3, the utility model can be given full play to the advantage of traditional two stroke engine, the inferior position of evading traditional two stroke engine, can also make full use of the advantage of modern four stroke engine, have that volume is little, in light weight, efficient is high, advantage such as few discharges pollutants.
Description of drawings
Fig. 1 is the structural representation of the overhead outside opening gas distribution two-stroke engine that anti-dress external-open exhaust seat mouth and flow guide structure body are set that provides of the utility model;
Fig. 2 is the structural representation of the overhead outside opening gas distribution two-stroke engine that anti-dress external-open exhaust seat mouth and air inlet bundle structure are set that provides of the utility model;
Fig. 3 is the structural representation of the overhead outside opening gas distribution two-stroke engine that anti-dress external-open exhaust seat mouth, flow guide structure body and air inlet bundle structure are set that provides of the utility model;
Fig. 4 is the structural representation that the overhead outside opening gas distribution two-stroke engine of opening exhaust seat mouth and flow guide structure body in the formal dress is set that the utility model provides;
Fig. 5 is the structural representation that the overhead outside opening gas distribution two-stroke engine of opening exhaust seat mouth and air inlet bundle structure in the formal dress is set that the utility model provides;
Fig. 6 is the structural representation that the overhead outside opening gas distribution two-stroke engine of opening exhaust seat mouth, flow guide structure body and air inlet bundle structure in the formal dress is set that the utility model provides.
Accompanying drawing number
1. intake duct 2. air outlet flues 3. cylinder head
4. the anti-external-open air inlet seat mouth 401. anti-dress external-open air inlet valve bodies of adorning
5. open the exhaust seat mouth in exhaust seat mouth 51. anti-dress external-open exhaust seat mouth 52. formal dress
6. air valve body begins to rehearse in exhaust valve 61. anti-dress external-open exhaust valve 62. formal dress
7. air inlet bundle structure 8. flow guide structure bodies
9. two-stroke air inlet arrangement for controlling timing 10. two-stroke exhaust arrangement for controlling timing
Embodiment
Overhead outside opening gas distribution two-stroke engine as shown in Figure 1, comprise intake duct (1), air outlet flue (2) and cylinder head (3), anti-dress external-open air inlet seat mouth (4) is set on described cylinder head (3), described anti-dress external-open air inlet seat mouth (4) is communicated with described intake duct (1), locate to establish anti-dress external-open air inlet valve body (401) at described anti-dress external-open air inlet seat mouth (4), anti-dress external-open exhaust seat mouth (51) is set on described cylinder head (3), described anti-dress external-open exhaust seat mouth (51) is communicated with described air outlet flue (2), locate to establish anti-dress external-open exhaust valve (61) at described anti-dress external-open exhaust seat mouth (51), between described anti-dress external-open air inlet seat mouth (4) and described anti-dress external-open exhaust seat mouth (51), establish flow guide structure body (8), described anti-dress external-open air inlet valve body (401) is opened or closed described anti-dress external-open air inlet seat mouth (4) by two-stroke air inlet arrangement for controlling timing (9) control, and described anti-dress external-open exhaust valve (61) is opened or closed described anti-dress external-open exhaust seat mouth (51) by two-stroke exhaust arrangement for controlling timing (10) control.
Overhead outside opening gas distribution two-stroke engine as shown in Figure 2, comprise intake duct (1), air outlet flue (2) and cylinder head (3), anti-dress external-open air inlet seat mouth (4) is set on described cylinder head (3), described anti-dress external-open air inlet seat mouth (4) is communicated with described intake duct (1), locate to establish anti-dress external-open air inlet valve body (401) at described anti-dress external-open air inlet seat mouth (4), anti-dress external-open exhaust seat mouth (51) is set on described cylinder head (3), described anti-dress external-open exhaust seat mouth (51) is communicated with described air outlet flue (2), locate to establish anti-dress external-open exhaust valve (61) at described anti-dress external-open exhaust seat mouth (51), on described anti-dress external-open air inlet seat mouth (4), establish air inlet bundle structure (7), described anti-dress external-open air inlet valve body (401) is opened or closed described anti-dress external-open air inlet seat mouth (4) by two-stroke air inlet arrangement for controlling timing (9) control, and described anti-dress external-open exhaust valve (61) is opened or closed described anti-dress external-open exhaust seat mouth (51) by two-stroke exhaust arrangement for controlling timing (10) control.Optionally, air inlet bundle structure (7) also can be arranged on the described cylinder head (3) that described anti-dress external-open air inlet seat mouth (4) locates.
Overhead outside opening gas distribution two-stroke engine as shown in Figure 3, comprise intake duct (1), air outlet flue (2) and cylinder head (3), anti-dress external-open air inlet seat mouth (4) is set on described cylinder head (3), described anti-dress external-open air inlet seat mouth (4) is communicated with described intake duct (1), locate to establish anti-dress external-open air inlet valve body (401) at described anti-dress external-open air inlet seat mouth (4), anti-dress external-open exhaust seat mouth (51) is set on described cylinder head (3), described anti-dress external-open exhaust seat mouth (51) is communicated with described air outlet flue (2), locate to establish anti-dress external-open exhaust valve (61) at described anti-dress external-open exhaust seat mouth (51), on described anti-dress external-open air inlet seat mouth (4), establish air inlet bundle structure (7), between described anti-dress external-open air inlet seat mouth (4) and anti-dress external-open exhaust seat mouth (51), establish flow guide structure body (8), described anti-dress external-open air inlet valve body (401) is opened or closed described anti-dress external-open air inlet seat mouth (4) by two-stroke air inlet arrangement for controlling timing (9) control, and described anti-dress external-open exhaust valve (61) is opened or closed described anti-dress external-open exhaust seat mouth (51) by two-stroke exhaust arrangement for controlling timing (10) control.
Overhead outside opening gas distribution two-stroke engine as shown in Figure 4, comprise intake duct (1), air outlet flue (2) and cylinder head (3), anti-dress external-open air inlet seat mouth (4) is set on described cylinder head (3), described anti-dress external-open air inlet seat mouth (4) is communicated with described intake duct (1), locate to establish anti-dress external-open air inlet valve body (401) at described anti-dress external-open air inlet seat mouth (4), on described cylinder head (3), be provided with and open exhaust seat mouth (52) in the formal dress, opening exhaust seat mouth (52) in the described formal dress is communicated with described air outlet flue (2), in described formal dress, open exhaust seat mouth (52) and locate to establish the air valve body (62) that begins to rehearse in the formal dress, in described anti-dress external-open air inlet seat mouth (4) and formal dress, open and establish flow guide structure body (8) between the exhaust seat mouth (52), described anti-dress external-open air inlet valve body (401) is opened or closed described anti-dress external-open air inlet seat mouth (4) by two-stroke air inlet arrangement for controlling timing (9) control, and the air valve body (62) that begins to rehearse in the described formal dress is opened or closed opening exhaust seat mouth (52) in the described formal dress by two-stroke exhaust arrangement for controlling timing (10) control.
Overhead outside opening gas distribution two-stroke engine as shown in Figure 5, comprise intake duct (1), air outlet flue (2) and cylinder head (3), anti-dress external-open air inlet seat mouth (4) is set on described cylinder head (3), described anti-dress external-open air inlet seat mouth (4) is communicated with described intake duct (1), locate to establish anti-dress external-open air inlet valve body (401) at described anti-dress external-open air inlet seat mouth (4), on described cylinder head (3), be provided with in the anti-dress external-open formal dress and open exhaust seat mouth (52), opening exhaust seat mouth (52) in the described formal dress is communicated with described air outlet flue (2), in described formal dress, open exhaust seat mouth (52) and locate to establish the air valve body (62) that begins to rehearse in the formal dress, on described anti-dress external-open air inlet seat mouth (4), establish air inlet bundle structure (7), described anti-dress external-open air inlet valve body (401) is opened or closed described anti-dress external-open air inlet seat mouth (4) by two-stroke air inlet arrangement for controlling timing (9) control, and the air valve body (62) that begins to rehearse in the described formal dress is opened or closed opening exhaust seat mouth (52) in the described formal dress by two-stroke exhaust arrangement for controlling timing (10) control.Optionally, air inlet bundle structure (7) also can be arranged on the described cylinder head (3) that described anti-dress external-open air inlet seat mouth (4) locates.
Overhead outside opening gas distribution two-stroke engine as shown in Figure 6, comprise intake duct (1), air outlet flue (2) and cylinder head (3), anti-dress external-open air inlet seat mouth (4) is set on described cylinder head (3), described anti-dress external-open air inlet seat mouth (4) is communicated with described intake duct (1), locate to establish anti-dress external-open air inlet valve body (401) at described anti-dress external-open air inlet seat mouth (4), on described cylinder head (3), be provided with and open exhaust seat mouth (52) in the formal dress, opening exhaust seat mouth (52) in the described formal dress is communicated with described air outlet flue (2), in described formal dress, open exhaust seat mouth (52) and locate to establish the air valve body (62) that begins to rehearse in the formal dress, on described anti-dress external-open air inlet seat mouth (4), establish air inlet bundle structure (7), in described anti-dress external-open air inlet seat mouth (4) and formal dress, open and establish flow guide structure body (8) between the exhaust seat mouth (52), described anti-dress external-open air inlet valve body (401) is opened or closed described anti-dress external-open air inlet seat mouth (4) by two-stroke air inlet arrangement for controlling timing (9) control, and the air valve body (62) that begins to rehearse in the described formal dress is opened or closed opening exhaust seat mouth (52) in the described formal dress by two-stroke exhaust arrangement for controlling timing (10) control.
Claims (4)
1. overhead outside opening gas distribution two-stroke engine, comprise intake duct (1), air outlet flue (2) and cylinder head (3), it is characterized in that: anti-dress external-open air inlet seat mouth (4) is set on described cylinder head (3), described anti-dress external-open air inlet seat mouth (4) is communicated with described intake duct (1), locate to establish anti-dress external-open air inlet valve body (401) at described anti-dress external-open air inlet seat mouth (4), exhaust seat mouth (5) is set on described cylinder head (3), described exhaust seat mouth (5) is communicated with described air outlet flue (2), locate to establish exhaust valve (6) at described exhaust seat mouth (5), air inlet bundle structure (7) and/or flow guide structure body (8) are set, described air inlet bundle structure (7) is arranged on the described cylinder head (3) that described anti-dress external-open air inlet seat mouth (4) is gone up or described anti-dress external-open air inlet seat mouth (4) is located, described flow guide structure body (8) is arranged between described anti-dress external-open air inlet seat mouth (4) and the exhaust seat mouth (5), described anti-dress external-open air inlet valve body (401) is opened or closed described anti-dress external-open air inlet seat mouth (4) by two-stroke air inlet arrangement for controlling timing (9) control, and described exhaust valve (6) is opened or closed described exhaust seat mouth (5) by two-stroke exhaust arrangement for controlling timing (10) control.
2. overhead outside opening gas distribution two-stroke engine according to claim 1, it is characterized in that: described exhaust seat mouth (5) is made as anti-dress external-open exhaust seat mouth (51), and described exhaust valve (6) is made as anti-dress external-open exhaust valve (61).
3. overhead outside opening gas distribution two-stroke engine according to claim 1, it is characterized in that: described exhaust seat mouth (5) is made as and opens exhaust seat mouth (52) in the formal dress, and described exhaust valve (6) is made as the air valve body (62) that begins to rehearse in the formal dress.
4. overhead outside opening gas distribution two-stroke engine according to claim 1, it is characterized in that: described two-stroke air inlet arrangement for controlling timing (9) is made as electromagnetic type, mechanical type or hydraulic type, and described two-stroke exhaust arrangement for controlling timing (10) is made as electromagnetic type, mechanical type or hydraulic type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201708267U CN201474735U (en) | 2009-08-07 | 2009-08-07 | Overhead outward-opening distribution two-stroke engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201708267U CN201474735U (en) | 2009-08-07 | 2009-08-07 | Overhead outward-opening distribution two-stroke engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201474735U true CN201474735U (en) | 2010-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201708267U Expired - Fee Related CN201474735U (en) | 2009-08-07 | 2009-08-07 | Overhead outward-opening distribution two-stroke engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201474735U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775232A (en) * | 2012-10-26 | 2014-05-07 | 杨克伟 | Novel two-stroke engine |
-
2009
- 2009-08-07 CN CN2009201708267U patent/CN201474735U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775232A (en) * | 2012-10-26 | 2014-05-07 | 杨克伟 | Novel two-stroke engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20120807 |