CN104929797A - Two-stroke engine cylinder and two-stroke engine - Google Patents
Two-stroke engine cylinder and two-stroke engine Download PDFInfo
- Publication number
- CN104929797A CN104929797A CN201510395466.0A CN201510395466A CN104929797A CN 104929797 A CN104929797 A CN 104929797A CN 201510395466 A CN201510395466 A CN 201510395466A CN 104929797 A CN104929797 A CN 104929797A
- Authority
- CN
- China
- Prior art keywords
- scavenge trunk
- stroke engine
- air
- scavenge
- scavenging
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/18—Other cylinders
- F02F1/22—Other cylinders characterised by having ports in cylinder wall for scavenging or charging
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
Abstract
The invention provides a two-stroke engine cylinder and a two-stroke engine, and relates to the field of gasoline engines. The two-stroke engine cylinder comprises a cylinder body, the cylinder body is provided with a gas inlet and a gas outlet, the cylinder body is internally provided with an air compression chamber, a scavenging channel used for scavenging is formed in the inner wall of the air compression chamber, the scavenging channel comprises a first scavenging channel body and a second scavenging channel body, compared with the first scavenging channel body, the second scavenging channel is close to the gas inlet, and the scavenging direction of the second scavenging channel body points to the gas inlet direction. By means of the two-stroke engine, the phenomenon that oil gas mixing gas which is not burned escapes from the gas outlet in the working process of the two-stroke engine is reduced, the fuel oil use rate of the two-stroke engine is improved, exhaust emission capacity is reduced, and therefore the energy conversion efficiency of the two-stroke engine is improved. By means of the two-stroke engine, the phenomenon that the oil gas mixing gas which is not used escapes from the gas outlet is reduced, the oil gas mixing gas use rate is improved, and the energy is saved.
Description
Technical field
The present invention relates to petrol engine field, in particular to a kind of two stroke engine cylinder and two stroke engine.
Background technique
Petrol engine (Gasoline Engine) is using gasoline as fuel, thermal energy is become the motor of kinetic energy.In petrol engine, air-cooled two-stroke gasoline engine because rotating speed is high, power per liter is large, structure is simple, quality is light, cheap, smooth running, easy maintenance, so be widely used as the power source in the fields such as communications and transportation, agricultural drainage and irrigation plantation, civil engineering construction.
The structure of usual air-cooled two-stroke gasoline engine mainly comprises cylinder body assembly, crankcase body, crankshaft rod assembly, piston, igniter, fuel oil supply system, steam inlet pipe, air filter, outlet pipe and cooling fan.Wherein, the rotating shaft that cooling fan is arranged on bent axle is driven to rotate along with the rotation of rotating shaft, produces cooling air and cool to petrol engine, realize air-cooled.
In two-stroke gasoline engine working procedure, descent of piston is to when sweeping vapour position, and air-fuel mixture gas in piston compression crankcase, the waste gas of air-fuel mixture gas through two scavenge trunks press-in cylinder internal upper parts and after cleaning burning, discharges waste gas from relief opening.But existing two-stroke gasoline engine cylinder block when sweeping the scavenging of vapour passage by two, to be easy to cause by air-fuel mixture gas with the waste gas after burning simultaneously from exhaust ports effusion, such that rate of fuel consumption in two-stroke gasoline engine work is high, waste gas exhaust amount is large.
Summary of the invention
In view of this, the invention provides a kind of two stroke engine cylinder and two stroke engine, to improve the problems referred to above.
A kind of two stroke engine cylinder provided by the invention comprises cylinder body, described cylinder body offers suction port and relief opening, air compressing chamber is offered in described cylinder body, inwall along described air compressing chamber is provided with the scavenge trunk for scavenging, described scavenge trunk is arranged between described suction port and described relief opening, described scavenge trunk comprises the first scavenge trunk and the second scavenge trunk, the number of described first scavenge trunk and described second scavenge trunk is the integral multiple of two, multiple described first scavenge trunks are symmetricly set on the inwall of described cylinder body, multiple described second scavenge trunks are symmetricly set on the inwall of described cylinder body, described first scavenge trunk is disposed adjacent with described second scavenge trunk, described second scavenge trunk is compared near described suction port direction in described first scavenge trunk, described suction port direction is pointed in the scavenging direction of described second scavenge trunk.
Above-described two stroke engine cylinder, preferably, described second scavenge trunk also comprises guiding groove, and described guiding groove is arranged on the scavenging ingress of described second scavenge trunk, and described guiding groove tilts to described second scavenge trunk.The air-flow entering the second scavenging scavenge trunk is guided to flow to the direction in the scavenging outlet port of the second scavenge trunk by guiding groove, larger scavenging ingress can improve the speed that air-fuel mixture gas enters into air compressing chamber simultaneously, air-fuel mixture gas significantly can be entered in air compressing chamber, improve air-fuel mixture gas transfer efficiency.
Above-described two stroke engine cylinder, preferably, the edge of described second scavenge trunk is fillet.Edge is that the second scavenge trunk of fillet can avoid scavenge trunk to occur dead angle, and then prevent air current flow dead angle, namely air-flow can not be deposited in dead angle place and not flow, air-fuel mixture gas is avoided to pile up, maintain the continuous flowing of air-fuel mixture gas simultaneously, avoid the accumulation of the waste gas after the burning of air-fuel mixture gas, improve air-fuel mixture gas combustion efficiency, and ensure that the smooth and easy efficient work of motor.
Above-described two stroke engine cylinder, preferably, described relief opening is circular arc relief opening.The relief opening of circular arc can overcome air current flow dead angle, effectively can prevent air-fuel mixture gas from being discharged by relief opening when scavenging simultaneously, decrease the waste of the energy.
Above-described two stroke engine cylinder, preferably, the shape of described circular arc relief opening is the circular arc relief opening of two arc docking.This circular arc relief opening easy processing, easily manufactured, there is good processibility, possess the feature of circular arc relief opening simultaneously, the discharge of air-fuel mixture gas by relief opening can be reduced.
Above-described two stroke engine cylinder, preferably, described second scavenge trunk cross-section area is greater than described first scavenge trunk cross-section area.Because the second scavenge trunk is greater than the first scavenge trunk, make when carrying out scavenging, enter the air-fuel mixture gas of the second scavenge trunk much larger than the air-fuel mixture gas entering the first scavenge trunk, the air-fuel mixture gas of the first scavenge trunk is blowed to air inlet side direction by the air-fuel mixture gas entering the second scavenge trunk, most of oil gas mixed steam body is done work through the ignition combustion of spark plug near air inlet side direction, decrease the phenomenon that air-fuel mixture gas is discharged by relief opening, and then improve the utilization ratio of air-fuel mixture gas, reach the function that fuel-economizing is energy-conservation.
Above-described two stroke engine cylinder, preferably, described second scavenge trunk is bend pipe second scavenge trunk.Bend pipe second scavenge line makes air-flow improve the impact force of the second scavenge trunk to the first scavenge trunk when carrying out scavenging, decreases the escape of air-fuel mixture gas by relief opening, improves the utilization ratio of air-fuel mixture gas.
Above-described two stroke engine cylinder, preferably, the dimensional profile of one end of described second scavenge trunk scavenging entrance is greater than the dimensional profile of one end of described second scavenge trunk scavenging outlet.Second scavenge trunk of this shape and structure, form a funnel-like, the scavenging of the second scavenge trunk is greater than the dimensional profile of one end of scavenging outlet due to the dimensional profile of one end of scavenging entrance, whole second scavenge trunk is made to form a funnel-like, greatly can improve the air-fuel mixture gas flow velocity of the second scavenge trunk, by improving air-fuel mixture gas flow velocity, the air-fuel mixture gas that the air-fuel mixture gas that second scavenge trunk is flowed out can flow out the first scavenge trunk plays and better brushes effect, the air-fuel mixture gas that the first scavenge trunk is flowed out is made also to flow to air inlet side direction as much as possible, greatly reduce air-fuel mixture gas to flow to relief opening, decrease air-fuel mixture gas without work by combustion just by phenomenon that relief opening is discharged, and then improve the utilization ratio of air-fuel mixture gas of motor.
Present invention also offers a kind of two stroke engine, comprise piston, connecting rod, crank and above-described two stroke engine cylinder, described piston reciprocatingly slides in the air compressing chamber in described two stroke engine cylinder, the other end of described piston is connected with described connecting rod, and described connecting rod is connected with described crank.Because the airflow direction of the second scavenge trunk points to air inlet side direction, when making scavenging, the air-fuel mixture gas entered from the first scavenge trunk brushes to air inlet side direction by the air-fuel mixture gas entered from the second scavenge trunk between air compressing chamber and piston, change the flow direction of the air-fuel mixture gas entered between air compressing chamber and piston, the air-fuel mixture gas overwhelming majority is made to flow to air inlet side direction, lighting through spark plug, work by combustion, promote piston movement, and then drive crank-motion, thus realize the function of motor.Because most air-fuel mixture gas has entered into air inlet side direction, decrease air-fuel mixture gas without acting just by phenomenon that relief opening is escaped, improve the air-fuel mixture gas utilization ratio of two stroke engine, adopt two stroke engine provided by the invention can fuel-economizing more.
Above-described two stroke engine, preferably, described scavenge trunk is obliquely installed, and described scavenge trunk tilts to described suction port direction, the to-and-fro motion in air compressing chamber of described piston.The scavenge trunk tilted can make piston when moving back and forth, mixing gas is extruded to air inlet side direction by scavenge trunk, most air-fuel mixture gas is made to be deposited in air inlet side direction instead of relief opening direction, decrease air-fuel mixture gas without utilizing just by phenomenon that relief opening is escaped, improve air-fuel mixture gas utilization ratio, save the energy.
Relative to prior art, a kind of two stroke engine cylinder provided by the invention and two stroke engine comprise following beneficial effect: two stroke engine cylinder provided by the invention is by utilizing increase by second scavenge trunk, improve the Throughput of the air-fuel mixture vapour of scavenge trunk when scavenging on the one hand, on the other hand, because the runner direction of the second scavenge trunk is towards suction port, make when carrying out scavenging, the fuel-air mixture that second scavenge trunk is flowed out flows towards air inlet side direction, blow the fuel-air mixture flowed out the first scavenge trunk to flow towards air inlet side direction simultaneously, reduce the phenomenon that in two-stroke engine working procedure, fuel-air mixture is overflowed from relief opening, thus two stroke engine fuel utilization ratio is improved, waste gas exhaust measures to reduce, and then improve the energy conversion efficiency of two-stroke engine.
Accompanying drawing explanation
In order to the clearer explanation embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is formula of the cuing open schematic diagram of the two stroke engine cylinder that first embodiment of the invention provides;
Fig. 2 is that the axle of the two stroke engine cylinder that second embodiment of the invention provides measures intention;
Fig. 3 is the schematic top plan view of the two stroke engine cylinder that Fig. 2 provides;
Fig. 4 is the cross-sectional schematic of the two stroke engine cylinder that Fig. 2 provides;
Fig. 5 is the cross-sectional schematic in the A-A face of the two stroke engine cylinder that Fig. 2 provides;
Fig. 6 is the cross-sectional schematic of the two stroke engine cylinder that fourth embodiment of the invention provides.
Wherein, the corresponding relation between reference character and component names is as follows: cylinder body 101, suction port 102, relief opening 103, scavenge trunk 106, scavenge trunk 105, second, air compressing chamber 104, first, guiding groove 107, piston 201, connecting rod 202, crank 203.
Embodiment
In two-stroke gasoline engine working procedure, descent of piston is to when sweeping vapour position, and air-fuel mixture gas in piston compression crankcase, the waste gas of air-fuel mixture gas through two scavenge trunks press-in cylinder internal upper parts and after cleaning burning, discharges waste gas from relief opening.But existing two-stroke gasoline engine cylinder block is when sweeping the scavenging of vapour passage by two, to be easy to cause by air-fuel mixture gas with the waste gas after burning simultaneously from exhaust ports effusion, such that rate of fuel consumption in two-stroke gasoline engine work is high, waste gas exhaust amount is large.
The invention provides a kind of two stroke engine cylinder and two stroke engine to improve the problems referred to above.
Also by reference to the accompanying drawings the present invention is described in further detail below by specific embodiment.
In the present invention, first, second, third, etc. are difference signal, are not limit.
Fig. 1 is the schematic diagram of the two stroke engine cylinder that first embodiment of the invention provides; As shown in Figure 1, a kind of two stroke engine cylinder that first embodiment of the invention provides, is the cylinder for air-cooling two-stroke gasoline machine, comprises cylinder body 101, cylinder body 101 offers suction port 102 and relief opening 103.Suction port 102 is communicated with suction tude, and relief opening 103 is communicated with steam outlet pipe.Offer air compressing chamber 104 in cylinder body 101, the inwall along air compressing chamber 104 is provided with the scavenge trunk for scavenging.Scavenge trunk is arranged between suction port 102 and relief opening 103.Scavenge trunk comprises the first scavenge trunk 105 and the second scavenge trunk 106.The number of the first scavenge trunk 105 and the second scavenge trunk is the integral multiple of two, and in the present embodiment, the first scavenge trunk 105 is two, and the second scavenge trunk 106 is two.Article two, the first scavenge trunk 105 is symmetricly set on the inwall of cylinder body 101, and two the second scavenge trunks 106 are symmetricly set on the inwall of cylinder body 101.Article two, the first scavenge trunk 105 is disposed adjacent with two the second scavenge trunks 106, and the second scavenge trunk 106 is compared closer to suction port 102 in the first scavenge trunk 105, and suction port 102 direction is pointed in the scavenging direction of the second scavenge trunk 106.First scavenge trunk 105 is adjacent with the second scavenge trunk 106 to be arranged side by side.
The two stroke engine cylinder that the present embodiment provides is by utilizing increase by two the second scavenge trunks 106, improve the Throughput of the air-fuel mixture vapour of scavenge trunk when scavenging on the one hand, on the other hand, because the runner direction of the second scavenge trunk 106 is towards suction port 102, make when carrying out scavenging, the fuel-air mixture that second scavenge trunk 106 is flowed out flows towards suction port 102, blow the fuel-air mixture flowed out the first scavenge trunk 105 to flow near suction port simultaneously, reduce the phenomenon that in two-stroke engine working procedure, fuel-air mixture is overflowed from relief opening 103, thus two-stroke engine fuel utilization ratio is improved, waste gas exhaust measures to reduce, and then improve the energy conversion efficiency of two-stroke engine.
Fig. 2 is that the axle of the two stroke engine cylinder that second embodiment of the invention provides measures intention; Fig. 3 is the schematic top plan view of the two stroke engine cylinder that Fig. 2 provides; Fig. 4 is the cross-sectional schematic of the two stroke engine cylinder that Fig. 2 provides; Fig. 5 is the cross-sectional schematic in the A-A face of the two stroke engine cylinder that Fig. 2 provides; As shown in Figure 2-5, on the basis of the two stroke engine cylinder that a kind of two stroke engine cylinder that second embodiment of the invention provides provides in the first embodiment, further, the second scavenge trunk 106 also comprises guiding groove 107.Guiding groove 107 is arranged on air inlet place of the second scavenge trunk 106, and guiding groove 107 caves in inside the second scavenge trunk 106, tilts, makes the scavenging ingress of the second scavenge trunk 106 form trumpet-shaped opening.Air-fuel mixture gas is guided to enter the scavenging outlet port of the second scavenge trunk 106 by guiding groove 107, air-fuel mixture gas flows to the direction in the scavenging outlet port of the second scavenge trunk 106, and then improve the speed that air-fuel mixture gas enters into air compressing chamber 104, in the top, air compressing chamber 104 that air-fuel mixture gas can significantly be entered in cylinder, improve air-fuel mixture gas transfer efficiency.
Further, the edge of the second scavenge trunk 106 is fillet.Edge is that the second scavenge trunk 106 of fillet can avoid scavenge trunk to occur dead angle, air-flow can not be deposited in dead angle place and not flow, maintain the continuous flowing of air-fuel mixture gas, avoid the accumulation of the waste gas after the burning of air-fuel mixture gas, improve air-fuel mixture gas combustion efficiency, and ensure that motor smooth and easy, work efficiently.
In the cylinder that the present embodiment provides, relief opening 103 is circular arc relief opening.The relief opening 103 of circular arc can overcome air current flow dead angle, effectively can prevent air-fuel mixture gas from being discharged by relief opening when scavenging simultaneously, decrease the waste of the energy.Rectangular air outlet is adopted in prior art, after measured, when scavenging, enter the air-fuel mixture gas on top, air compressing chamber 104 while exclusion waste gas, can discharge from rectangular air outlet along with the waste gas of discharging, wherein, waste gas is discharged mainly through the middle part of rectangular air outlet, air-fuel mixture gas be then thereupon waste gas by the edge of rectangular air outlet, especially four escape points of rectangular air outlet corner.
Further, the shape of the circular arc relief opening of two stroke engine cylinder that the present embodiment provides is the circular arc relief opening of two arcs docking.This circular arc relief opening easy processing, easily manufactured, there is good processibility, possess the feature of circular arc relief opening simultaneously, the discharge of air-fuel mixture gas by relief opening can be reduced.
The cross-section area of the second scavenge trunk 106 is greater than the first scavenge trunk 105.Cross-section area due to the second scavenge trunk 106 is greater than the first scavenge trunk 105, like this, the air inflow of the second scavenge trunk 106 is much larger than the Throughput of the first scavenging air belt 105, making when carrying out scavenging, entering the air-fuel mixture gas of the second scavenge trunk 106 much larger than the air-fuel mixture gas entering the first scavenge trunk 105.The air-fuel mixture gas of the first scavenge trunk 105 is blowed to air inlet side direction 102 by the air-fuel mixture gas entering the second scavenge trunk 106, most of oil gas mixed steam body is done work through the ignition combustion of spark plug near air inlet side direction 102, decrease the phenomenon that air-fuel mixture gas is discharged by relief opening 103, and then improve the utilization ratio of air-fuel mixture gas, reach the function that fuel-economizing is energy-conservation.
Meanwhile, the dimensional profile of one end of the second scavenge trunk 106 scavenging entrance is greater than the dimensional profile of one end of the second scavenge trunk 106 scavenging outlet.Make whole second scavenge trunk 106 form a funnel-like, funnelform second scavenge trunk 106 forms Venturi tube, greatly can improve the flow velocity of the air-fuel mixture gas in the second scavenge trunk 106.When carrying out scavenging, the air-fuel mixture gas flow velocity of the second scavenge trunk 106 scavenging exit end is high, and the air-fuel mixture gas that the air-fuel mixture gas that the second scavenge trunk 106 is flowed out can flow out the first scavenge trunk 105 plays and better brushes effect.The air-fuel mixture flow of gas that second scavenge trunk 106 is flowed out is to air inlet side direction 102, the air-fuel mixture gas of the first scavenge trunk 105 is under the effect of the second scavenge trunk 106 simultaneously, the air-fuel mixture gas that first scavenge trunk 105 is flowed out also flows to air inlet side direction 102 as much as possible, greatly reduce and enter to flow to relief opening 103 to the air-fuel mixture gas in air compressing chamber 105 by scavenge trunk, decrease air-fuel mixture gas without work by combustion just by phenomenon that relief opening 103 is discharged, and then improve the utilization ratio of motor to air-fuel mixture gas, decrease the waste gas that two stroke engine is discharged.
On the basis of the two stroke engine cylinder that a kind of two stroke engine cylinder that third embodiment of the invention provides provides in the second embodiment, further, the second scavenge trunk in the two stroke engine cylinder that provides of the 3rd embodiment is bend pipe second scavenge trunk.Bend pipe second scavenge line makes air-flow have better guiding when carrying out scavenging, and the flow that improve in bend pipe second scavenge trunk and flow velocity, improve the air-fuel mixture gas of the second scavenge trunk 106 outflow to the impact force of the air-fuel mixture gas that the first scavenge trunk 105 is flowed out, the air-fuel mixture gas that second scavenge trunk 106 is flowed out carries the air-fuel mixture flow of gas of the first scavenge trunk 105 outflow to air inlet side direction 102, decrease the escape of air-fuel mixture gas by relief opening 103, improve the utilization ratio of air-fuel mixture gas.
Fig. 6 is the cross-sectional schematic of the two stroke engine cylinder that fourth embodiment of the invention provides.As shown in Figure 6, fourth embodiment of the invention provides a kind of two stroke engine, comprise the two stroke engine cylinder that piston 201, connecting rod 202, crank 203 and the second embodiment provide, piston 201 reciprocatingly slides in the air compressing chamber 104 in two stroke engine cylinder, the other end of piston 201 is connected with connecting rod 202, connecting rod 202 is connected with crank 203, and crank 203 rotates and is arranged on two stroke engine cylinder.
Because the airflow direction of the second scavenge trunk 106 points to air inlet side direction 102, when making scavenging, the air-fuel mixture gas entered from the first scavenge trunk 105 brushes to air inlet side direction 102 by the air-fuel mixture gas entered from the second scavenge trunk 106 between air compressing chamber 104 and piston 201, change the flow direction of the air-fuel mixture gas entered between air compressing chamber 104 and piston 201, the air-fuel mixture gas overwhelming majority is made to flow near air inlet side direction 102, lighting through spark plug is compressed in air compressing chamber 104, work by combustion, promote piston 201 to move, by the transmission of connecting rod 202, and then drive crank 203 to rotate, the transmission shaft that rotates through of crank 203 exports, thus realize generation and the transmission of power, complete the function of motor.
Arrive near air inlet side direction 102 because most air-fuel mixture gas has flow to, decrease air-fuel mixture gas by relief opening 103 without the phenomenon of just escaping of doing work, improve the air-fuel mixture gas utilization ratio of two stroke engine, improve the energy conversion efficiency of two stroke engine, can fuel-economizing more, and waste gas exhaust measures to reduce.
Fifth embodiment of the invention provides a kind of two stroke engine, and scavenge trunk 105,106 is obliquely installed in the present invention, and the scavenging outlet of scavenge trunk is tilted to direction, air inlet side direction 102.Due to piston 201 to-and-fro motion in air compressing chamber 104.Inclination scavenge trunk 105,106 can make piston 201 when moving back and forth, the air-fuel mixture gas entered in air compressing chamber 104 is extruded by the direction of scavenge trunk to suction port 102 by nature, make most air-fuel mixture gas be deposited in suction port 102 instead of flow near relief opening 103, further reduce and enter into air-fuel mixture gas in air compressing chamber 104 without utilization just direct phenomenon of being escaped by relief opening 103, improve air-fuel mixture gas utilization ratio, save the energy.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a two stroke engine cylinder, it is characterized in that, comprise cylinder body, described cylinder body offers suction port and relief opening, air compressing chamber is offered in described cylinder body, inwall along described air compressing chamber is provided with the scavenge trunk for scavenging, described scavenge trunk is arranged between described suction port and described relief opening, described scavenge trunk comprises the first scavenge trunk and the second scavenge trunk, the number of described first scavenge trunk and described second scavenge trunk is the integral multiple of two, multiple described first scavenge trunks are symmetricly set on the inwall of described cylinder body, multiple described second scavenge trunks are symmetricly set on the inwall of described cylinder body, described first scavenge trunk is disposed adjacent with described second scavenge trunk, described second scavenge trunk is compared near described suction port in described first scavenge trunk, described air inlet side direction is pointed in the scavenging direction of described second scavenge trunk.
2. two stroke engine cylinder according to claim 1, it is characterized in that, described second scavenge trunk also comprises guiding groove, and described guiding groove is arranged on the scavenging ingress of described second scavenge trunk, and described guiding groove tilts to described second scavenge trunk.
3. two stroke engine cylinder according to claim 1, is characterized in that, the edge of described second scavenge trunk is fillet.
4. two stroke engine cylinder according to claim 1, is characterized in that, described relief opening is circular arc relief opening.
5. two stroke engine cylinder according to claim 1, is characterized in that, the shape of described circular arc relief opening is the circular arc relief opening of two arc docking.
6. two stroke engine cylinder according to claim 1, is characterized in that, described second scavenge trunk cross-section area is greater than described first scavenge trunk.
7. two stroke engine cylinder according to claim 1, is characterized in that, described second scavenge trunk is bend pipe second scavenge trunk.
8. two stroke engine cylinder according to claim 1, is characterized in that, the dimensional profile of one end of described second scavenge trunk scavenging entrance is greater than the dimensional profile of one end of described second scavenge trunk scavenging outlet.
9. a two stroke engine, it is characterized in that, comprise piston, connecting rod, crank and the two stroke engine cylinder described in claim 1-8 any one, described piston reciprocatingly slides in the air compressing chamber in described two stroke engine cylinder, the other end of described piston is connected with described connecting rod, and described connecting rod is connected with described crank.
10. two stroke engine according to claim 9, is characterized in that, described scavenge trunk is obliquely installed, and described scavenge trunk tilts to described suction port direction, the to-and-fro motion in air compressing chamber of described piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510395466.0A CN104929797A (en) | 2015-07-02 | 2015-07-02 | Two-stroke engine cylinder and two-stroke engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510395466.0A CN104929797A (en) | 2015-07-02 | 2015-07-02 | Two-stroke engine cylinder and two-stroke engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104929797A true CN104929797A (en) | 2015-09-23 |
Family
ID=54117167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510395466.0A Pending CN104929797A (en) | 2015-07-02 | 2015-07-02 | Two-stroke engine cylinder and two-stroke engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104929797A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840335A (en) * | 2016-05-25 | 2016-08-10 | 山东华盛农业药械有限责任公司 | Closed scavenging channel with cylinder body for two-stroke engines |
| CN113756980A (en) * | 2021-09-17 | 2021-12-07 | 中国北方发动机研究所(天津) | Cylinder cover structure with accelerated scavenging effect of spark-ignition two-stroke engine |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200952421Y (en) * | 2006-09-13 | 2007-09-26 | 山东华盛农业药械股份有限公司 | Two-stroke petrol engine |
| WO2011121930A2 (en) * | 2010-03-31 | 2011-10-06 | Hitachi Koki Co., Ltd. | Two-cycle engine and engine tool comprising the same |
| CN102797550A (en) * | 2012-04-06 | 2012-11-28 | 天津内燃机研究所 | Two-stroke engine |
| CN202628293U (en) * | 2012-06-07 | 2012-12-26 | 临沂照华动力机械有限公司 | Two-stroke gasoline engine cylinder block |
| CN103061864A (en) * | 2011-10-19 | 2013-04-24 | 浙江派尼尔机电有限公司 | Multilayer scavenging engine |
| CN203161363U (en) * | 2013-04-01 | 2013-08-28 | 王以连 | Two-stroke cylinder body with auxiliary scavenging air duct |
| CN103790690A (en) * | 2014-02-21 | 2014-05-14 | 浙江天泰机械有限公司 | Gasoline engine |
| EP2749749A1 (en) * | 2012-12-28 | 2014-07-02 | Makita Corporation | Stratified scavenging two-stroke engine |
| CN203756313U (en) * | 2014-02-21 | 2014-08-06 | 浙江天泰机械有限公司 | Gasoline engine |
| CN204900090U (en) * | 2015-07-02 | 2015-12-23 | 浙江天泰机械有限公司 | Two -stroke -cycle engine cylinder and two -stroke -cycle engine |
-
2015
- 2015-07-02 CN CN201510395466.0A patent/CN104929797A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200952421Y (en) * | 2006-09-13 | 2007-09-26 | 山东华盛农业药械股份有限公司 | Two-stroke petrol engine |
| WO2011121930A2 (en) * | 2010-03-31 | 2011-10-06 | Hitachi Koki Co., Ltd. | Two-cycle engine and engine tool comprising the same |
| CN103061864A (en) * | 2011-10-19 | 2013-04-24 | 浙江派尼尔机电有限公司 | Multilayer scavenging engine |
| CN102797550A (en) * | 2012-04-06 | 2012-11-28 | 天津内燃机研究所 | Two-stroke engine |
| CN202628293U (en) * | 2012-06-07 | 2012-12-26 | 临沂照华动力机械有限公司 | Two-stroke gasoline engine cylinder block |
| EP2749749A1 (en) * | 2012-12-28 | 2014-07-02 | Makita Corporation | Stratified scavenging two-stroke engine |
| CN203161363U (en) * | 2013-04-01 | 2013-08-28 | 王以连 | Two-stroke cylinder body with auxiliary scavenging air duct |
| CN103790690A (en) * | 2014-02-21 | 2014-05-14 | 浙江天泰机械有限公司 | Gasoline engine |
| CN203756313U (en) * | 2014-02-21 | 2014-08-06 | 浙江天泰机械有限公司 | Gasoline engine |
| CN204900090U (en) * | 2015-07-02 | 2015-12-23 | 浙江天泰机械有限公司 | Two -stroke -cycle engine cylinder and two -stroke -cycle engine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840335A (en) * | 2016-05-25 | 2016-08-10 | 山东华盛农业药械有限责任公司 | Closed scavenging channel with cylinder body for two-stroke engines |
| CN113756980A (en) * | 2021-09-17 | 2021-12-07 | 中国北方发动机研究所(天津) | Cylinder cover structure with accelerated scavenging effect of spark-ignition two-stroke engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8141536B2 (en) | Air cleaner for stratified-scavenging two-stroke internal combustion engine | |
| CN1082139C (en) | Dual piston IC engine | |
| US7243622B2 (en) | Two-stroke internal combustion engine | |
| CN200952421Y (en) | Two-stroke petrol engine | |
| CN104929797A (en) | Two-stroke engine cylinder and two-stroke engine | |
| CN204900090U (en) | Two -stroke -cycle engine cylinder and two -stroke -cycle engine | |
| CN102230421A (en) | Air inlet device with two air inlet channels for two-stroke engine | |
| CN101463753A (en) | Low-discharge two-stroke gasoline engine | |
| CN109690047A (en) | Two-stroke internal combustion engine | |
| CN214092059U (en) | Two-stroke cylinder | |
| CN205779284U (en) | A kind of two stroke engine cylinder body enclosed scavenging path | |
| CN105840335B (en) | Two stroke engine cylinder body enclosed scavenging path | |
| CN104234818A (en) | Two-stroke internal combustion engine | |
| CN205744178U (en) | A kind of layered scavenging two-stroke engine piston | |
| CN204099043U (en) | A kind of two stroke IC engine | |
| CN115111049A (en) | High-turbulence kinetic energy combustion system and engine | |
| CN113107663A (en) | Air inlet pipe of layered scavenging two-stroke engine | |
| CN215057779U (en) | Gasoline engine and layered scavenging cylinder thereof | |
| CN202250359U (en) | Air make-up scavenging engine | |
| CN209800083U (en) | Two-stroke gasoline engine | |
| CN208474012U (en) | Enclosed air flue scavenging air cylinder structure | |
| CN207393335U (en) | A kind of two stroke engine cylinder sleeve of new and effective exhaust | |
| CN208564738U (en) | A kind of two-cycle gasoline machine crankshaft eddy flow scavenging structure | |
| CN201306207Y (en) | Low discharge two-stroke gasoline engine | |
| CN203547877U (en) | Air cooling two-stroke gasoline engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150923 |