CN103256112A - Two-stroke engine overhead air valve scavenging structure - Google Patents
Two-stroke engine overhead air valve scavenging structure Download PDFInfo
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- CN103256112A CN103256112A CN2012100337567A CN201210033756A CN103256112A CN 103256112 A CN103256112 A CN 103256112A CN 2012100337567 A CN2012100337567 A CN 2012100337567A CN 201210033756 A CN201210033756 A CN 201210033756A CN 103256112 A CN103256112 A CN 103256112A
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- stroke engine
- air valve
- overhead air
- valve
- scavenging structure
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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 invention discloses a two-stroke engine overhead air valve scavenging structure. The two-stroke engine overhead air valve scavenging structure is characterized in that a crankshaft is arranged on a two-stroke engine body and drives an ejector through a cam connected with the crankshaft to control an overhead air valve at the top of the two-stroke engine body; on the outer side of a cylinder, a channel for maintaining pressure is formed by a check valve or a valve block and a sealing screw; a mixed fuel channel is formed on the outer side of the check valve; and the overhead air valve is communicated with the mixed fuel channel. When the structure is implemented from top to bottom, losses of fresh mixed air can be reduced effectively, exhaust emission is reduced, overall product design is reasonable in structure and ingenious in idea, working state is stable, high practicality is provided, and compared with the prior art, the structure has the advantages of outstanding substantive features and obvious progress.
Description
Technical field
The present invention relates to the technical field of two stroke engine, specifically a kind of two stroke engine overhead air valve scavenging structure, particularly its mechanical connecting structure.
Background technique
The scavenging of two stroke engine, exhaust are all carried out near the piston lower dead center, and gas port is symmetric arrangement all in the lower end of cylinder with the lower dead center.Behind the engine charge, inflammable mixture flows to relief opening by scavenging port easily, simultaneously, owing to scavenging port produces extra exhaust prior to exhaust close. therefore in the gas exchange process of two stroke engine, some inflammable mixture has neither part nor lot in burning and just together discharges with waste gas, the incoming mixture 20%-30% that can run off, thereby fuel oil and lubricating oil consumption are all big, therefore, exhaust emission is serious, and the HC value in the pollutant is far above four stroke engine.
Because the defective of above-mentioned technology, so still need existing two stroke engine scavenging structure is further improved.
Summary of the invention
The object of the present invention is to provide a kind of two stroke engine overhead air valve scavenging structure, it adopts overhead air valve scavenging structure, and air valve is arranged on the top of cylinder, and relief opening is still in the bottom; The overhead air valve is opened back fresh mix gas and is from top to bottom entered cylinder, down scavenges, and effectively reduces fresh mix gas and runs off, and can reduce discarded discharge amount, has overcome the shortcoming and defect that exists in the prior art.
To achieve these goals, technological scheme of the present invention is: a kind of two stroke engine overhead air valve scavenging structure, it comprises the two stroke engine body, it is characterized in that: two stroke engine body place is provided with bent axle, bent axle is by the overhead air valve of coupled cam driven push rod control two stroke engine body cylinder head, simultaneously form a passage that keep-ups pressure in the outside of cylinder by one-way valve or valve block and sealing screw, the outside of described one-way valve forms combination gas passage, overhead air valve and combination gas channel connection.
The invention discloses a kind of two stroke engine overhead air valve scavenging structure, can effectively reduce incoming mixture from top to bottom runs off, reduce toxic emission, the product global design is rational in infrastructure, be skillfully constructed, stable working state has good practicability, compared to existing technologies, have outstanding substantive distinguishing features and remarkable progress.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
With reference to the accompanying drawings, the present invention further is described.
The present invention is a kind of two stroke engine overhead air valve scavenging structure, as shown in fig. 1, it comprises two stroke engine body 1, it is different from prior art and is: described two stroke engine body 1 place is provided with bent axle 2, bent axle 2 drives the overhead air valve 5 of push rod 9 control two stroke engine bodies 1 cylinder head by coupled cam 6, cam 6 is connected with push rod 9 one ends, simultaneously form a passage that keep-ups pressure in the outside of cylinder by one-way valve or valve block 3 and sealing screw 7, this passage is combination gas passage 4, and combination gas passage 4 and overhead air valve 5 that described one-way valve 3 outsides form are interconnected.
In the specific implementation, the passage place of described combination gas passage 4 bottoms and crankcase 8 is provided with one-way valve or valve block 3.
In the specific implementation, there is blast tube in the described two stroke engine body cylinder outside, the lower end of blast tube and crankcase 8 have passage, be provided with one-way valve or valve block 3 at this, one-way valve or valve block 3 are used for keeping channel pressure, compressing crankcase combustible gas is opened the valve block air inlet during descent of piston, the crankcase negative one-way valve is closed during piston stroking upward, prevent that fuel gas return-flow from reducing scavenging efficiency, bent axle 2 places are provided with cam 6, rotate with bent axle, parts such as drive push rod make the opening and closing of overhead air valve, and the outside of described one-way valve 3 forms combination gas passage 4, and two stroke engine body 1 top is provided with overhead air valve 5, overhead air valve 5 is communicated with combination gas passage 4, and described combination gas passage 4 places are provided with sealing screw 7.
Above content be in conjunction with concrete preferred implementation to further describing that patent of the present invention is done, can not assert that patent of the present invention is concrete to implement to be confined to above-mentioned these explanations.For the general technical staff of the technical field of the invention, under the prerequisite that does not break away from patent design of the present invention, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (3)
1. two stroke engine overhead air valve scavenging structure, it comprises two stroke engine body (1), it is characterized in that: two stroke engine body (1) locates to be provided with bent axle (2), bent axle (2) drives the overhead air valve (5) of push rod (9) control two stroke engine body (1) cylinder head by coupled cam (6), simultaneously form a passage that keep-ups pressure in the outside of cylinder by one-way valve or valve block (3) and sealing screw (7), the outside of described one-way valve (3) forms combination gas passage (4), and overhead air valve (5) is communicated with combination gas passage (4).
2. a kind of two stroke engine overhead air valve scavenging structure according to claim 1 is characterized in that: described combination gas passage (4) bottom is provided with one-way valve or valve block (3) with the passage place of crankcase (8).
3. a kind of two stroke engine overhead air valve scavenging structure according to claim 1, it is characterized in that: described bent axle (2) locates to be provided with cam (6), and cam (6) is connected with push rod (9) one ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100337567A CN103256112A (en) | 2012-02-15 | 2012-02-15 | Two-stroke engine overhead air valve scavenging structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100337567A CN103256112A (en) | 2012-02-15 | 2012-02-15 | Two-stroke engine overhead air valve scavenging structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103256112A true CN103256112A (en) | 2013-08-21 |
Family
ID=48960283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100337567A Pending CN103256112A (en) | 2012-02-15 | 2012-02-15 | Two-stroke engine overhead air valve scavenging structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN103256112A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114592966A (en) * | 2022-05-11 | 2022-06-07 | 四川迅联达智能科技有限公司 | All-air scavenging engine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1156846A (en) * | 1914-02-03 | 1915-10-12 | Olof Johnson | Internal-combustion engine. |
| US5586523A (en) * | 1993-03-31 | 1996-12-24 | Mitsubishi Jukogyo Kabushiki Kaisha | Crankcase compression type two-cycle engine |
| US5752477A (en) * | 1996-02-12 | 1998-05-19 | Institut Francais Du Petrole | Two-stroke engine with valve motion control means |
| US5775274A (en) * | 1994-10-11 | 1998-07-07 | Institut Francais Du Petrole | Two-stroke engine with air-blast fuel mixture injection |
| EP1167715A2 (en) * | 2000-06-23 | 2002-01-02 | Fuji Jukogyo Kabushiki Kaisha | Two-stroke engine |
| CN101684744A (en) * | 2008-09-28 | 2010-03-31 | 周泮敖 | Bidirectional air intake method and device for four-stroke internal combustion engine |
| CN202531276U (en) * | 2012-02-15 | 2012-11-14 | 蔡兴民 | Overhead air valve scavenging structure of two-stroke engine |
-
2012
- 2012-02-15 CN CN2012100337567A patent/CN103256112A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1156846A (en) * | 1914-02-03 | 1915-10-12 | Olof Johnson | Internal-combustion engine. |
| US5586523A (en) * | 1993-03-31 | 1996-12-24 | Mitsubishi Jukogyo Kabushiki Kaisha | Crankcase compression type two-cycle engine |
| US5775274A (en) * | 1994-10-11 | 1998-07-07 | Institut Francais Du Petrole | Two-stroke engine with air-blast fuel mixture injection |
| US5752477A (en) * | 1996-02-12 | 1998-05-19 | Institut Francais Du Petrole | Two-stroke engine with valve motion control means |
| EP1167715A2 (en) * | 2000-06-23 | 2002-01-02 | Fuji Jukogyo Kabushiki Kaisha | Two-stroke engine |
| CN101684744A (en) * | 2008-09-28 | 2010-03-31 | 周泮敖 | Bidirectional air intake method and device for four-stroke internal combustion engine |
| CN202531276U (en) * | 2012-02-15 | 2012-11-14 | 蔡兴民 | Overhead air valve scavenging structure of two-stroke engine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114592966A (en) * | 2022-05-11 | 2022-06-07 | 四川迅联达智能科技有限公司 | All-air scavenging engine |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130821 |
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| WD01 | Invention patent application deemed withdrawn after publication |