CN110725745A - Two-stroke engine - Google Patents
Two-stroke engine Download PDFInfo
- Publication number
- CN110725745A CN110725745A CN201911002166.6A CN201911002166A CN110725745A CN 110725745 A CN110725745 A CN 110725745A CN 201911002166 A CN201911002166 A CN 201911002166A CN 110725745 A CN110725745 A CN 110725745A
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- working
- piston
- work
- stroke engine
- Prior art date
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
Abstract
The invention relates to the technical field of engines, in particular to a two-stroke engine. The device comprises a work cylinder, wherein the work cylinder comprises a work piston and a work cylinder body matched with the work piston to work; the lower end of the working cylinder body is provided with a pressing cylinder body, the outer diameter of the pressing cylinder body is larger than that of the working cylinder body, the lower end of the working piston is provided with a compressed air piston which is matched with the pressing cylinder body to work, and the space between the upper end of the working piston and the working cylinder body is a combustion chamber. The invention realizes the reduction of the discharge capacity, the increase of the power, the reduction of the exhaust pollutant emission and the additional lubrication.
Description
The technical field is as follows:
the invention relates to the technical field of engines, in particular to a two-stroke engine.
Background art:
the crank of the two-stroke engine rotates for one circle to do work, and the crank of the four-stroke engine rotates for two circles to do work, so that the torque of the two-stroke engine is more uniform than that of the four-stroke engine. But also has the defects of high oil consumption, low fuel utilization rate, serious emission pollution, incapability of additionally installing lubrication, unsuitability for long-distance use and the like.
The invention content is as follows:
the invention aims to provide a two-stroke engine which realizes the purposes of reducing the discharge capacity, increasing the power, reducing the emission of tail gas pollutants and additionally installing lubrication. The engine overcomes the defects of large oil consumption, low fuel utilization rate, excessive pollutant discharge of tail gas and unsuitability for long-distance use of the existing two-stroke engine.
The technical scheme adopted by the invention is as follows: a two-stroke engine comprises a working cylinder, wherein the working cylinder comprises a working piston and a working cylinder body matched with the working piston to work; the lower end of the cylinder body of the acting cylinder is provided with a pressing cylinder body, the outer diameter of the pressing cylinder body is larger than that of the cylinder body of the acting cylinder, the lower end of the acting piston is provided with a compression piston which works in match with the cylinder body of the pressing cylinder, the space between the upper end of the acting piston and the cylinder body of the acting cylinder is a combustion chamber, the annular space between the upper end of the compression piston and the cylinder body of the pressing cylinder and the acting piston is a compression chamber, the top of the cylinder body of the acting cylinder is provided with an exhaust valve, a spark plug and an oil nozzle, the upper end of the acting piston is provided with an intake valve, when the intake valve is opened, the combustion chamber is communicated with the compression chamber through.
The working piston and the air compression piston are designed as a whole.
The cylinder body of the working cylinder and the cylinder body of the pressure cylinder are designed into a whole.
The maximum volume of the plenum chamber is greater than 2 times the maximum volume of the combustion chamber.
The invention has the beneficial effects that: the invention realizes the reduction of the discharge capacity, the increase of the power, the reduction of the exhaust pollutant emission and the additional lubrication.
Description of the drawings:
the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic diagram of a single cycle of the present invention.
The specific implementation mode is as follows:
as shown in fig. 1, a two-stroke engine includes a working cylinder, the working cylinder includes a working piston 6 and a working cylinder body 12 working in match with the working piston 6; the lower end of a working cylinder body 12 is provided with a pressing cylinder body 13, the outer diameter of the pressing cylinder body 13 is larger than that of the working cylinder body 12, the lower end of a working piston 6 is provided with an air compression piston 9 which is matched with the pressing cylinder body 13 to work, the space between the upper end of the working piston 6 and the working cylinder body 12 is a combustion chamber 4, the annular space between the upper end of the air compression piston 9 and the pressing cylinder body 13 as well as the working piston 6 is a pressing air chamber 8, the top of the working cylinder body 12 is provided with an exhaust valve 1, a spark plug 2 and an oil nozzle 3, the upper end of the working piston 6 is provided with an air inlet valve 5, when the air inlet valve 5 is opened, the combustion chamber 4 is communicated with the pressing air chamber 8 through the air inlet valve 5, the upper end of the pressing cylinder body 13 is provided with an intake valve 7, the exhaust valve 1 is in linkage with a forced opening and closing design action, when the pressure intensity in the air compression chamber 8 is smaller than the external pressure intensity of the suction valve 7, the suction valve 7 is automatically opened, the lower end of the acting piston 6 is connected with a connecting rod 10 through a pin shaft, and the lower end of the connecting rod 10 is connected with a crankshaft 11 through a pin shaft.
The power piston 6 and the displacer 9 are designed as one piece.
The working cylinder body 12 and the pressure cylinder body 13 are designed as a whole.
The maximum volume of the plenum 8 is greater than 2 times the maximum volume of the combustion chamber 4.
As shown in fig. 2, the crankshaft 11 of the present invention performs one rotation to perform work, and the following cycle is completed:
in the lower stroke (shown in fig. 2 a), after the spark plug 2 is ignited, the mixed gas in the combustion chamber 4 is combusted and expanded to push the working piston 6 to move downwards, the exhaust valve 1 and the intake valve 5 are in a closed state, the working piston 6 moves downwards together with the air compressing piston 9, the air compressing chamber 8 generates negative pressure, the intake valve 7 automatically opens, fresh air flows into the air compressing chamber 8 until the working piston moves to a bottom dead center (shown in fig. 2B), and at the moment, the exhaust valve 1, the intake valve 5 and the intake valve 7 are in a closed state. And completing two processes of work doing and air suction.
In the first half of the upper stroke (shown in fig. 2C), the power piston 6 and the displacer 9 move upward, the pressure in the pneumatic chamber 8 is higher than the atmospheric pressure, the intake valve 7 is closed, the exhaust valve 1 is forcibly opened, and the pressure in the combustion chamber 4 communicated with the atmosphere is equal to the atmospheric pressure. The air compression piston 9 moves upwards, the fresh air in the air compression chamber 8 is compressed to increase the pressure of the air compression chamber 8, the air inlet valve 5 is opened under the action of the pressure, the acting piston 6 continues to move upwards, the fresh air in the air compression chamber 8 pushes the waste gas in the combustion chamber 4 to be discharged out of the cylinder through the exhaust valve 1, and when the volume of the air pressed into the combustion chamber 4 by the air compression chamber 8 is equal to the maximum volume of the combustion chamber 4, the exhaust process of the combustion chamber 4 is completed.
The second half of the upstroke (fig. 2, D), when the exhaust has been completed, the exhaust valve 1 is forcibly closed and the injector 3 starts injecting fuel; the working piston 6 and the air compression piston 9 continue to move upwards, the air inlet valve 5 is still in an open state under the action of pressure, fresh air in the air compression chamber 8 continues to flow into the combustion chamber 4, fuel oil and air are stirred to be fully mixed, and the combustion efficiency of the fuel oil is improved; when the working piston 6 moves to the top dead center (shown in fig. 2E), the combustion chamber 4 and the surge tank 8 are pressure balanced, the intake valve 5 is automatically closed, the spark plug 2 is ignited, the mixture is detonated, and the next cycle is started.
It should be understood that the detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can be modified or substituted equally to achieve the same technical effects; as long as the use requirements are met, the method is within the protection scope of the invention.
Claims (4)
1. A two-stroke engine comprises a working cylinder, wherein the working cylinder comprises a working piston (6) and a working cylinder body (12) matched with the working piston (6) to work; the method is characterized in that: the lower end of a working cylinder body (12) is provided with a pressing cylinder body (13), the outer diameter of the pressing cylinder body (13) is larger than that of the working cylinder body (12), the lower end of a working piston (6) is provided with a compression piston (9) which works in a matching way with the pressing cylinder body (13), the space between the upper end of the working piston (6) and the working cylinder body (12) is a combustion chamber (4), the annular space between the upper end of the compression piston (9) and the pressing cylinder body (13) as well as the working piston (6) is a pressure air chamber (8), the top of the working cylinder body (12) is provided with an exhaust valve (1), a spark plug (2) and an oil nozzle (3), the upper end of the working piston (6) is provided with an air inlet valve (5), the combustion chamber (4) is communicated with the pressure air chamber (8) through the air inlet valve (5) when the air inlet valve, the lower end of the working piston (6) is connected with a connecting rod (10) through a pin shaft, and the lower end of the connecting rod (10) is connected with a crankshaft (11) through a pin shaft.
2. A two-stroke engine according to claim 1, wherein: the working piston (6) and the air compression piston (9) are designed into a whole.
3. A two-stroke engine according to claim 1, wherein: the working cylinder body (12) and the pressure cylinder body (13) are designed into a whole.
4. A two-stroke engine according to claim 1, wherein: the maximum volume of the air compression chamber (8) is 2 times larger than that of the combustion chamber (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911002166.6A CN110725745A (en) | 2019-10-21 | 2019-10-21 | Two-stroke engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911002166.6A CN110725745A (en) | 2019-10-21 | 2019-10-21 | Two-stroke engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110725745A true CN110725745A (en) | 2020-01-24 |
Family
ID=69220549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911002166.6A Pending CN110725745A (en) | 2019-10-21 | 2019-10-21 | Two-stroke engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110725745A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111206988A (en) * | 2020-02-20 | 2020-05-29 | 林忠宝 | Two-stroke linear generator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2183726A (en) * | 1985-11-19 | 1987-06-10 | Andrew David Marsh | Double-acting two stroke I.C. engine |
| WO2013050068A1 (en) * | 2011-10-05 | 2013-04-11 | Vassiljev Georgi | Two-cycle trunk-piston engine |
| CN103174505A (en) * | 2013-02-20 | 2013-06-26 | 邱文化 | Two-stroke engine |
| CN104863706A (en) * | 2015-04-15 | 2015-08-26 | 丁健威 | Cylinder-driving two-stroke engine |
| CN209053687U (en) * | 2018-11-23 | 2019-07-02 | 许铁牛 | A kind of convex cylinder two-stroke internal combustion engine |
-
2019
- 2019-10-21 CN CN201911002166.6A patent/CN110725745A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2183726A (en) * | 1985-11-19 | 1987-06-10 | Andrew David Marsh | Double-acting two stroke I.C. engine |
| WO2013050068A1 (en) * | 2011-10-05 | 2013-04-11 | Vassiljev Georgi | Two-cycle trunk-piston engine |
| CN103174505A (en) * | 2013-02-20 | 2013-06-26 | 邱文化 | Two-stroke engine |
| CN104863706A (en) * | 2015-04-15 | 2015-08-26 | 丁健威 | Cylinder-driving two-stroke engine |
| CN209053687U (en) * | 2018-11-23 | 2019-07-02 | 许铁牛 | A kind of convex cylinder two-stroke internal combustion engine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111206988A (en) * | 2020-02-20 | 2020-05-29 | 林忠宝 | Two-stroke linear generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200124 |