CN109372630A - The air-cooled single cylinder engine of plenum - Google Patents
The air-cooled single cylinder engine of plenum Download PDFInfo
- Publication number
- CN109372630A CN109372630A CN201811544289.8A CN201811544289A CN109372630A CN 109372630 A CN109372630 A CN 109372630A CN 201811544289 A CN201811544289 A CN 201811544289A CN 109372630 A CN109372630 A CN 109372630A
- Authority
- CN
- China
- Prior art keywords
- air
- inlet pipe
- air inlet
- charge hole
- super charge
- 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
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/02—Drives of pumps; Varying pump drive gear ratio
- F02B39/04—Mechanical drives; Variable-gear-ratio drives
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P1/00—Air cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
- F01P5/04—Pump-driving arrangements
-
- 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
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a kind of air-cooled single cylinder engines of plenum, comprising: the heat-dissipating cavity being connected to outside air；It is set to the intracorporal flywheel structure of heat dissipation cavity, the end connection of the flywheel structure and crankshaft, the flywheel structure rotates under the drive of crankshaft, so that the peripheral air in heat-dissipating cavity at flywheel structure periphery is in high pressure conditions；Air inlet pipe, outside air is connected to by the air inlet pipe with the air intake duct in cylinder head, the air inlet pipe is equipped with super charge hole, and the heat-dissipating cavity is connected to by the super charge hole with air inlet pipe, and the peripheral air is injected into the air inlet pipe by the super charge hole.Complete machine economic performance, power performance and emission performance of the invention is more preferably and fuel oil oil consumption reduction, the power of complete machine are higher.
Description
Technical field
The present invention relates to the field of structural design of single cylinder engine more particularly to a kind of air-cooled single cylinder engines of plenum.
Background technique
Air-cooled single cylinder engine in the prior art radiates to complete machine by the way of air-cooled, works in air-cooled single cylinder engine
When, crankshaft rotation drives flywheel operating, and flywheel is equipped with for cooling wind blade, wind blade meeting in quick rotation
The air in the wind-guiding outer cover of air-cooled single cylinder engine is driven to rotate together with, air is under the turning effort of flywheel high speed herein, flywheel
The peripheral air of wind blade be in high pressure conditions, air at this time can be according to the guide pin in the cooling air channel of complete machine
Direction flowing, realization cool down complete machine cylinder head and body.
The indoor air of the burning of air-cooled single cylinder engine then accesses outside air by air inlet pipe, and tempering air and burning are used
Air is mutually indepedent, does not influence each other.And the inlet structure bulk of the existing cylinder head of air-cooled single cylinder engine is limited, is difficult
Size by increasing the air intake duct of cylinder head increases induction swirl ratio and improves discharge coefficient to realize, so as to cause can not be into
One step improves complete machine economic performance, power performance and emission performance.
Summary of the invention
The object of the present invention is to provide a kind of air-cooled single cylinder engine of plenum, complete machine economic performance, power performance and rows
It puts performance more preferably and fuel oil oil consumption reduction, the power of complete machine is higher.
Technical solution provided by the invention is as follows:
A kind of air-cooled single cylinder engine of plenum, comprising: the heat-dissipating cavity being connected to outside air；It is set to heat-dissipating cavity
The end of interior flywheel structure, the flywheel structure and crankshaft connects, and the flywheel structure rotates under the drive of crankshaft, so that
Peripheral air in heat-dissipating cavity at flywheel structure periphery is in high pressure conditions；Air inlet pipe, the air inlet pipe will be extraneous empty
Gas is connected to the air intake duct in cylinder head, and the air inlet pipe is equipped with super charge hole, and the heat-dissipating cavity passes through the pressurization
Air inlet is connected to air inlet pipe, and the peripheral air is injected into the air inlet pipe by the super charge hole.
In above structure, by opening up super charge hole in air inlet pipe, the high voltage peripheral of flywheel structure periphery will be located at
Air imports in air inlet pipe, increases the air capacity in air inlet pipe in the unit time, that is, increases the discharge coefficient of air, and by
In peripheral air be pressure-air, so when peripheral air is entered in air inlet pipe by super charge hole, due to super charge
There are pressure differences for two sides at hole, and peripheral air can form injection at super charge hole, so as to improve swirl ratio.It is such to do
Method to burn being more fully mixed of indoor air and fuel oil, and reduces the fuel oil oil consumption of complete machine, improves the warp of complete machine
Ji property index and power performance, while having good facilitation to the reduction of the exhaust contaminant of complete machine.
Preferably, fine filtering core is equipped at the super charge hole, the fine filtering core covers the entire super charge hole.
Fine filtering core at super charge hole is set for filtering out the impurity into air inlet inner air tube, avoids impurity edge
Air inlet pipe enter in combustion chamber and lead to block fuel injector, spark plug, piston ring or piston, eventually lead to air-cooled single cylinder engine effect
Rate decline or failure.
Preferably, the air inlet pipe is connected to by air filter with outside air.
The outside air that will enter in air inlet pipe is filtered by the way that air filter is arranged, avoids the impurity in outside air
Air-cooled single cylinder engine efficiency is caused to decline or fail in into combustion chamber.
Preferably, the flywheel structure includes flywheel and the wind blade that is arranged on flywheel, and the flywheel fixation is arranged
In the end of the crankshaft.
Preferably, the air-cooled single cylinder engine of the plenum further include: combustion chamber, the combustion chamber by cylinder head into
Air flue is connected to air inlet pipe.
Preferably, the super charge hole is several.
Preferably, super charge hole is 1-3.
Preferably, the interval between the adjacent super charge hole is equal.
The intracorporal pressure-air of heat dissipation cavity is injected into air inlet pipe by multiple super charge holes respectively, and due to pressurization
Spacing between air inlet is identical, advantageously forms the vortex of multiple superpositions so that the intracorporal pressure-air of heat dissipation cavity with
Gas mixing in air inlet pipe is more uniform.
Preferably, the part that air inlet pipe is contacted with heat-dissipating cavity is arranged in the super charge hole；The super charge hole
It is arranged within the scope of the 1/5-4/5 pipeline section on the part that air inlet pipe is contacted with heat-dissipating cavity.
Super charge hole is arranged within the scope of 1/5~4/5 pipeline section on the part that air inlet pipe is contacted with heat-dissipating cavity preferably,
And can sufficiently improve the swirl ratio in air inlet pipe, if being more than the range, the pressurization for the gas being unfavorable in air inlet pipe and increasing
Press the two-way gas mixing of air inlet position.
Preferably, the aperture in the super charge hole is 5-15mm.
The aperture limitation in super charge hole can effectively be ensured into plenum effect within the above range.
A kind of air-cooled single cylinder engine of plenum provided by the invention, can bring it is following the utility model has the advantages that
The air-cooled single cylinder engine of plenum of the invention utilizes the pressure-air of the intracorporal flywheel structure periphery of heat dissipation cavity, will
Pressure-air passes through the super charge hole added and is injected into air inlet pipe at this, so that the air capacity in air inlet pipe increases, increases
Add discharge coefficient and improve swirl ratio, thus complete machine economic performance, power performance and emission performance more preferably and fuel oil oil consumption drop
Power that is low, increasing complete machine.
Detailed description of the invention
Below by clearly understandable mode, preferred embodiment is described with reference to the drawings, to the air-cooled single cylinder of plenum
Above-mentioned characteristic, technical characteristic, advantage and its implementation of machine are further described.
Fig. 1 is the structural schematic diagram of the air-cooled single cylinder engine of plenum of the invention.
Drawing reference numeral explanation:
1- air inlet pipe, the part that 1a- air inlet pipe is contacted with heat-dissipating cavity, 2- air filter, 3- super charge hole, 4- crankshaft, 5-
Flywheel, 6- wind blade, 7- wind-guiding outer cover, the high-pressure area 8-, 9- cylinder head, 10- air intake duct, the combustion chamber 11-, 12- piston,
13- heat-dissipating cavity, 14- starting device.
Specific embodiment
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, Detailed description of the invention will be compareed below
A specific embodiment of the invention.It should be evident that drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, and obtain other embodiments.
To make simplified form, part related to the present invention is only schematically shown in each figure, their not generations
Its practical structures as product of table.
[embodiment 1]
As shown in Figure 1, present embodiment discloses a kind of specific embodiment of the air-cooled single cylinder engine of plenum, packet
It includes: the heat-dissipating cavity 13 being connected to outside air, the flywheel structure, air inlet pipe 1 and the combustion chamber that are set in heat-dissipating cavity 13
11。
Wherein, heat-dissipating cavity 13 is surrounded by wind-guiding outer cover 7 and the outer wall of crankcase, and combustion chamber 11 is by piston 12 and fuel injector
Or spark plug surrounds.Flywheel structure is connect with the end of crankshaft 4, and flywheel structure rotates under the drive of crankshaft 4, so that heat dissipation cavity
Peripheral air in body 13 in flywheel structure periphery is in high pressure conditions.Specifically, flywheel structure includes that flywheel 5 and setting exist
Wind blade 6 on flywheel 5, the fixed end for being set in crankshaft 4 of flywheel 5, air-cooled single cylinder engine at work, crankshaft 4 rotates,
Crankshaft 4 will drive the rotation of flywheel 5, so that the air at flywheel 5 is got rid of along the direction of wind blade 6 to the periphery of flywheel structure
To form high pressure at peripheral place, at super charge hole 3 high-pressure area 8 high there are air pressure, as shown in fig. 1.
Outside air is connected to by air inlet pipe 1 with the air intake duct 10 in cylinder head 9, and crankshaft 4 casees upper is arranged in cylinder head 9
Side, air inlet pipe 1 are connected to by the air intake duct 10 of cylinder head 9 with combustion chamber 11, and air inlet pipe 1 is equipped with a super charge hole 3, tool
Body, the part that air inlet pipe 1 is contacted with heat-dissipating cavity 13 is arranged in super charge hole 3, and heat-dissipating cavity 13 passes through super charge hole 3
It is connected to air inlet pipe 1, peripheral air is injected into air inlet pipe 1 by super charge hole 3, and the aperture in super charge hole 3 is
15mm, the plenum effect at effective guarantee super charge hole 3.
Heat-dissipating cavity 13 and the air flow condition at air inlet pipe 1 are as follows:
It is divided into two-way into the air one in air-cooled single cylinder engine, the first via is that outside air is filled by the starting of engine
It sets the hole on 14 to enter in heat-dissipating cavity 13, be cooled down under the rotation of flywheel 5 and is thrown at the periphery of flywheel 5, finally in flywheel 5
Peripheral place form pressure-air, pressure-air is injected into air inlet pipe 1 when passing through super charge hole 3, and the second tunnel is the external world
Air is directly entered in air inlet pipe 1, and then the air at the super charge hole 3 in air inlet pipe 1 and the pressure-air of injection carry out
Mixing enters in combustion chamber 11 after eventually flowing through air intake duct 10 and fuel oil is mixed and burned.
Shown in the arrow A of inlet air flow path as shown in figure 1 in air inlet pipe 1, the flowing road of the air in heat-dissipating cavity 13
Diameter is as indicated by arrow b in fig. 1.
Air-cooled single cylinder engine efficiency is caused to decline or fail in order to avoid the impurity of outside air enters in combustion chamber 11,
Air filter 2 is arranged far from one end of cylinder head 9 in air inlet pipe 1, i.e. air inlet pipe 1 is connected to by air filter 2 with outside air, and be pressurized into
Fine filtering core is set at stomata 3, so that fine filtering core covers entire super charge hole 3.Aforementioned air filter 2 and fine filtering core are for pair
Air is filtered.
Heat-dissipating cavity 13 and the compact-sized feature of air inlet pipe 1 in air-cooled single cylinder engine is utilized in the present embodiment, by opening up
Super charge hole 3, which is realized, increases air capacity and the purpose of improvement swirl ratio in air inlet pipe 1, the case where not increasing complete machine cost
The lower effect for realizing discharge coefficient and improvement swirl ratio in air inlet pipe 1, has greater advantage in later period market competition.
[embodiment 2]
As shown in Figure 1, embodiment 2 and the structure of embodiment 1 are essentially identical, the super charge hole 3 of embodiment 2 is 3, is increased
It is pressed within the scope of 1/5~4/5 pipeline section that stomata 3 is arranged on the part 1a that air inlet pipe is contacted with heat-dissipating cavity and two neighboring increasing
The interval being pressed between the center of circle of stomata 3 is equal, and the spacing in adjacent super charge hole 3 is equal can be guaranteed in heat-dissipating cavity 13
More uniform into the gas in air inlet pipe 1 and the gas mixing in air inlet pipe 1,3 super charge holes 3 are separately positioned on and dissipate
At 1/5,1/2,4/5 in air inlet pipe 1 that hot cavity 13 contacts, and the aperture in each super charge hole 3 is 5mm, 3 holes 5mm
The super charge hole 3 of diameter equally can effectively ensure plenum effect.
In other specific embodiments, the quantity in super charge hole 3 is also possible to 2,4 or more, and be pressurized into
The aperture of stomata 3 is between 5mm~15mm, such as 6mm, 8mm, 10mm, 11mm etc., and details are not described herein again.
1/5~4/5 pipeline section range on the part 1a that air inlet pipe 1 is contacted with heat-dissipating cavity 13 is arranged in super charge hole 3
It is interior preferably not influence the stability of system structure, and sufficiently improve the swirl ratio in air inlet pipe 1, if being more than the range, no
Two-way gas mixing conducive to the pressurization of the gas in air inlet pipe 1 and at super charge hole 3.
It should be noted that above-described embodiment can be freely combined as needed.The above is only of the invention preferred
Embodiment, it is noted that for those skilled in the art, in the premise for not departing from the principle of the invention
Under, several improvements and modifications can also be made, these modifications and embellishments should also be considered as the scope of protection of the present invention.
Claims (10)
1. a kind of air-cooled single cylinder engine of plenum characterized by comprising
The heat-dissipating cavity being connected to outside air；
It is set to the intracorporal flywheel structure of heat dissipation cavity, the end connection of the flywheel structure and crankshaft, the flywheel structure is in song
It is rotated under the drive of axis, so that the peripheral air in heat-dissipating cavity at flywheel structure periphery is in high pressure conditions；
Outside air is connected to by air inlet pipe, the air inlet pipe with the air intake duct in cylinder head, the air inlet pipe be equipped be pressurized into
Stomata, the heat-dissipating cavity are connected to by the super charge hole with air inlet pipe, and the peripheral air passes through the super charge
Hole is injected into the air inlet pipe.
2. the air-cooled single cylinder engine of plenum according to claim 1, it is characterised in that:
Fine filtering core is equipped at the super charge hole, the fine filtering core covers the entire super charge hole.
3. the air-cooled single cylinder engine of plenum according to claim 1, it is characterised in that:
The air inlet pipe is connected to by air filter with outside air.
4. the air-cooled single cylinder engine of plenum according to claim 1, it is characterised in that:
The flywheel structure includes flywheel and the wind blade that is arranged on flywheel, and the flywheel fixation is set in the crankshaft
End.
5. the air-cooled single cylinder engine of plenum according to claim 1, which is characterized in that further include:
Combustion chamber, the combustion chamber are connected to by the air intake duct of cylinder head with air inlet pipe.
6. the air-cooled single cylinder engine of plenum according to claim 1, it is characterised in that:
The super charge hole is several.
7. the air-cooled single cylinder engine of plenum according to claim 6, it is characterised in that:
The super charge hole is 1-3.
8. the air-cooled single cylinder engine of plenum according to claim 6, it is characterised in that:
Interval between the adjacent super charge hole is equal.
9. the air-cooled single cylinder engine of plenum according to claim 1 or 6, it is characterised in that:
The part that air inlet pipe is contacted with heat-dissipating cavity is arranged in the super charge hole；
The super charge hole is arranged within the scope of the 1/5-4/5 pipeline section on the part that air inlet pipe is contacted with heat-dissipating cavity.
10. the air-cooled single cylinder engine of plenum according to claim 1, it is characterised in that:
The aperture in the super charge hole is 5-15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811544289.8A CN109372630A (en) | 2018-12-17 | 2018-12-17 | The air-cooled single cylinder engine of plenum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811544289.8A CN109372630A (en) | 2018-12-17 | 2018-12-17 | The air-cooled single cylinder engine of plenum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109372630A true CN109372630A (en) | 2019-02-22 |
Family
ID=65374070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811544289.8A Pending CN109372630A (en) | 2018-12-17 | 2018-12-17 | The air-cooled single cylinder engine of plenum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109372630A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116771752A (en) * | 2022-12-02 | 2023-09-19 | 泰兴欧曼液压科技有限公司 | Telescopic cylinder not easy to be blocked |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004270639A (en) * | 2003-03-11 | 2004-09-30 | Yanmar Co Ltd | Cylinder block of engine |
| CN105804896A (en) * | 2014-12-31 | 2016-07-27 | 上海擎掣汽车电子有限公司 | Engine and air inlet system thereof |
| CN106032769A (en) * | 2015-03-13 | 2016-10-19 | 常州科普动力机械有限公司 | Diesel engine double air inlet device and diesel engine and vehicle using same |
| CN207377683U (en) * | 2017-10-24 | 2018-05-18 | 济南吉美乐电源技术有限公司 | A kind of choke supercharging device of plateau air-cooled diesel engine |
| CN209244659U (en) * | 2018-12-17 | 2019-08-13 | 江苏常发农业装备股份有限公司 | The air-cooled single cylinder engine of plenum |
-
2018
- 2018-12-17 CN CN201811544289.8A patent/CN109372630A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004270639A (en) * | 2003-03-11 | 2004-09-30 | Yanmar Co Ltd | Cylinder block of engine |
| CN105804896A (en) * | 2014-12-31 | 2016-07-27 | 上海擎掣汽车电子有限公司 | Engine and air inlet system thereof |
| CN106032769A (en) * | 2015-03-13 | 2016-10-19 | 常州科普动力机械有限公司 | Diesel engine double air inlet device and diesel engine and vehicle using same |
| CN207377683U (en) * | 2017-10-24 | 2018-05-18 | 济南吉美乐电源技术有限公司 | A kind of choke supercharging device of plateau air-cooled diesel engine |
| CN209244659U (en) * | 2018-12-17 | 2019-08-13 | 江苏常发农业装备股份有限公司 | The air-cooled single cylinder engine of plenum |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116771752A (en) * | 2022-12-02 | 2023-09-19 | 泰兴欧曼液压科技有限公司 | Telescopic cylinder not easy to be blocked |
| CN116771752B (en) * | 2022-12-02 | 2024-01-09 | 泰兴欧曼液压科技有限公司 | Telescopic cylinder not easy to be blocked |
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