CN109915258A - A kind of separation lubrication layered scavenging two-stroke brush cutter dynamic structure and working method - Google Patents
A kind of separation lubrication layered scavenging two-stroke brush cutter dynamic structure and working method Download PDFInfo
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- CN109915258A CN109915258A CN201910103206.XA CN201910103206A CN109915258A CN 109915258 A CN109915258 A CN 109915258A CN 201910103206 A CN201910103206 A CN 201910103206A CN 109915258 A CN109915258 A CN 109915258A
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Abstract
The invention discloses a kind of separation lubrication layered scavenging two-stroke brush cutter dynamic structures, including fuel tank, crankcase, cylinder, carburetor, the crankcase is fixed on the upper end of fuel tank, the cylinder is fixed on the upper end of crankcase, one or more connecting tube is connected on the left of the crankcase, the connecting tube other side connects carburetor, it is fixed with grease-box in the fuel tank left-hand end and below carburetor, the grease-box is connected with connecting tube and cylinder respectively by pipeline/oil duct；It realizes that lubricating oil supplies on demand, reduces lubrication oil consumption, reduces the discharge of nuisance, the advantages of ensure that two-stroke layered-scavenging, it also ensures that the fuel oil of similar four-stroke engine and the advantage that lubricating oil is separated, save lubricating oil and reduces discharge, the final purpose for realizing energy-saving and emission-reduction.
Description
Technical field
The present invention relates to miniature gasoline engine class technical fields, and in particular to a kind of separation lubrication layered scavenging two-stroke brush
Mechanomotive force structure and working method.
Background technique
The lubricating system of general layered scavenging two-stroke brush mechanomotive force is mixed lubrication, it is by lubricating oil and gasoline
Fuel mixes according to a certain percentage, and fuel oil sucking and air atomizing are become misty by the vacuum degree of carburetor aditus laryngis, according to
Secondary lubrication cylinder, piston, piston ring, crankshaft-link rod, bearing etc..The shortcomings that mixed lubrication mode is the mixing of gasoline and lubricating oil
Ratio cannot change with the variation of engine speed and load, and usual mixing ratio is, and brush selected according to peak load
Machine is usually in rated speed and working under load, therefore the engine most of the time, all in excessive lubricating status, lubricating oil disappears
Consumption is big；Meanwhile excessive lubricating oil participates in burning, causes piston, piston ring, combustion chamber etc. carbon distribution and leads to engine overheat
And exhaust emission.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of separation lubrication layered scavenging two-stroke brush cutter dynamic structure,
It realizes that lubricating oil supplies on demand, reduces lubrication oil consumption, reduces the discharge of nuisance, that is, ensure that two-stroke layering is swept
The advantages of gas, also ensures that the advantage separated similar to the fuel oil and lubricating oil of four-stroke engine, saves lubricating oil and reduces discharge,
The final purpose for realizing energy-saving and emission-reduction.
To solve the above problems, the present invention adopts the following technical scheme:
A kind of separation lubrication layered scavenging two-stroke brush cutter dynamic structure, including fuel tank, crankcase, cylinder, carburetion
Device, the crankcase are fixed on the upper end of fuel tank, and the cylinder is fixed on the upper end of crankcase, connection on the left of the crankcase
There is one an or more connecting tube, the connecting tube other side connects carburetor, in the fuel tank left-hand end and is located at carburetor
Lower section is fixed with grease-box, and the grease-box is connected with connecting tube and cylinder respectively by pipeline/oil duct.
Further technical solution is that piston is placed in the cylinder, and the piston outer edge side is fixed with piston ring, institute
The up and down friction of piston ring and cylinder internal ring wall side to be stated to be arranged, grease-box is connected to by pipeline/oil duct with cylinder side,
Concrete principle is that another way is to reach the duct for staying in cylinder inner wall, and profit is scraped when piston ring is moved back and forth along cylinder inner wall
Lubricating oil, and realize and kinematic pair component each in cylinder, piston, piston ring and engine is lubricated.
Further technical solution is that crankcase lower right corner side is further fixed on a negative pressure pump, the effect of negative pressure pump
It is to be transported to negative pressure channel on the inside of connecting tube the lubricating oil in grease-box by negative pressure and using the connection of pipeline/oil duct
At center, mixed gas being mixed to form with level-one gaseous mixture and enters crankcase, combustion chamber is entered after scavenging and participates in burning, it is another
Road is to reach the duct for staying in cylinder inner wall, and lubricating oil, grease-box are scraped when piston ring is moved back and forth along cylinder inner wall
It first passes through and is separated into two pipeline/oil ducts after negative pressure pump and is connected to connecting tube and cylinder inner wall.
Further technical solution is that side is further fixed on bearing, the rotation on bearings connection before and after the crankcase
There is crankshaft, primarily serve transmission output action, crankshaft structure is the most common two-stroke brush cutter drive mechanism.
Further technical solution is that a connecting rod is additionally provided between the piston and crankshaft, and described connecting rod one end contradicts
In piston side, the other end is then connect with crank rotation.
It is supplied on demand another technical problem to be solved by the present invention is that providing a kind of realization lubricating oil, reduces lubricating oil and disappear
Consumption, effectively reduces carbon distribution and the blocking to muffler, improves the separation lubrication layered scavenging two-stroke brush cutter of discharge index
The working method of dynamic structure.
In order to solve the above technical problems, the present invention adopts the following technical scheme: the following steps are included:
1), first starting power driving crank when, when (upward) towards the cylinder top movement of piston, crankcase generates negative pressure,
Air through the fuel oil on carburetor band, meanwhile, negative pressure pump is driven by negative pressure in crankcase, grease-box passes through pipeline/oil
Road is connected to connecting tube, and is transported in air inlet pipe at negative pressure channel center；2), early period is mixed by negative pressure at 1 aditus laryngis of carburetor
The level-one gaseous mixture being made of pure fuel oil and air formed is closed, it can the lubricating oil in negative pressure channel is fast when by air inlet pipe
Speed is atomized into small oil droplet and is blended in level-one gaseous mixture, so that second level combustion mixture is formed, because negative pressure therein is compared with carburetor
Low inside trunnion, so droplet diameter is big, weight is high, only some is mixed to form mixed gas with level-one gaseous mixture and enters
Crankcase enters combustion chamber and participates in burning, a large amount of dosages for saving lubricating oil after scavenging；3), then, grease-box passes through pipe
Road/oil duct is simultaneously connected after profit negative pressure pump generates negative pressure with cylinder, the duct for staying in cylinder inner wall is reached, on piston ring edge
Cylinder inner wall scrape lubricating oil when moving back and forth, and realize to kinematic pair component each in cylinder, piston, piston ring and engine
It is lubricated；4), when piston is to when movement (downward) away from cylinder head, combustible gas is compressed in crankcase, when scavenging port is opened
When putting, combustible gas is pressed into cylinder through scavenging air belt；5) when, piston moves again up, combustible gas is compressed in the cylinder, pressure and
Temperature improves, and through ignition, heated gas pressure is further increased, and gas expansion pushes piston moves downward with dynamic crankshaft
Rotation, output power；6), when exhaust outlet is open, the exhaust gas after burning is first sprayed by pressure, then scans out gas by the drive of scavenging air-flow
Outside cylinder discharge machine, air inlet, compression, expansion, exhaust, in cycles, crankshaft constantly rotates, acting.
The beneficial effects of the present invention are: being supplied to electricity using the energy that flywheel when engine operation rotates generation in magnetic field
Magnet valve, the size for controlling negative pressure channel realize the flow control of negative pressure pump, will lubrication oil two-way conveying, the first via is by lubricating oil
It reaches in air inlet pipe at negative pressure channel center, is mixed to form second level again with the level-one gaseous mixture generated at carburetor aditus laryngis and mixes
Gas enters crankcase scavenging and participates in burning；Second tunnel is the duct for being transported to cylinder inner wall, in piston ring along cylinder inner wall
Lubricating oil is scraped when reciprocating motion, and realizes and kinematic pair component each in cylinder, piston, piston ring and engine is lubricated.
Realize lubricating oil supply on demand, largely save lubricating oil, reduce on this basis layered scavenging two-stroke engine HC and
The advantages of NO discharge value finally realizes the purpose of energy-saving and emission-reduction, ensure that two-stroke layered-scavenging also ensures that similar four strokes are sent out
The separated advantage of the fuel oil and lubricating oil of motivation saves lubricating oil and reduces discharge, the final purpose for realizing energy-saving and emission-reduction.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of separation lubrication layered scavenging two-stroke brush cutter dynamic structure of the present invention；
Fig. 2 is the cross-sectional view in the direction A-A in this Fig. 1；
Fig. 3 is a kind of top view of separation lubrication layered scavenging two-stroke brush cutter dynamic structure of the present invention；
Fig. 4 is the schematic diagram of oil pipe flow direction in a kind of separation lubrication two-stroke brush cutter dynamic structure of the present invention；
Fig. 5 is the schematic diagram of flywheel in a kind of separation lubrication two-stroke brush cutter dynamic structure of the present invention.
In Fig. 1-5: 1- carburetor, 2- connecting tube, 3- cylinder, 4- crankcase, 5- negative pressure pump, 6- fuel tank, 7- lubricating oil
Case, 8- piston, 9- piston ring, 10- crankshaft, 11- bearing, 12- connecting rod, 13- flywheel.
Specific embodiment
The preferred embodiment of the present invention is described in detail with reference to the accompanying drawing, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
Refering to fig. 1 shown in -5, a kind of separation lubrication layered scavenging two-stroke brush cutter dynamic structure, including fuel tank 6, song
Axle box 4, cylinder 3, carburetor 1, crankcase 4 are fixed on the upper end of fuel tank 6, and cylinder 3 is fixed on the upper end of crankcase 4, crankshaft
It is connected with one or more connecting tube 2 on the left of case 4,2 other side of connecting tube connects carburetor 1, in 6 left-hand end of fuel tank and position
Grease-box 7 is fixed with below carburetor 1, grease-box 7 is connected with connecting tube 2 and cylinder 3 respectively by pipeline/oil duct
It is logical.
It is placed with piston 8 in cylinder 3,8 outer edge side of piston is fixed with piston ring 9, on piston ring 9 and 3 internal ring wall side of cylinder
Lower activity friction setting, grease-box 7 are connected to by pipeline/oil duct with 3 side of cylinder, and concrete principle is that another way is to reach
The duct for staying in 3 inner wall of cylinder scrapes lubricating oil when piston ring 9 is moved back and forth along 3 inner wall of cylinder, and realize to cylinder 3,
Each kinematic pair component is lubricated in piston 8, piston ring 9 and engine.4 lower right corner side of crankcase is further fixed on a negative pressure pump
5, the effect of negative pressure pump 5 is to be transported to company the lubricating oil in grease-box 7 by negative pressure and using the connection of pipeline/oil duct
At 2 inside negative pressure channel center of adapter tube, mixed gas being mixed to form with level-one gaseous mixture and enters crankcase, combustion is entered after scavenging
It burns room and participates in burning, another way is to reach the duct for staying in 3 inner wall of cylinder, when piston ring 9 is moved back and forth along 3 inner wall of cylinder
Lubricating oil is scraped, grease-box 7 is separated into two pipeline/oil ducts and connecting tube 2 after first passing through negative pressure pump 5 and 3 inner wall of cylinder connects
It is logical.4 front and back side of crankcase is further fixed on bearing 11, and crankshaft 10 is rotatably connected on bearing 11, primarily serves transmission output and makees
With 10 structure of crankshaft is the most common two-stroke brush cutter drive mechanism.A connecting rod is additionally provided between piston 8 and crankshaft 10
12,12 one end of connecting rod is contradicted in 8 lower end side of piston, and the other end is then rotatablely connected with crankshaft 10, and the effect of connecting rod 12 is 8 He of piston
Indirect relation is established between crankshaft 10, is pumped by piston 8 and is done work with 10 high speed rotation of dynamic crankshaft.
In the present embodiment, the working method of the separation lubrication layered scavenging two-stroke brush cutter dynamic structure, including with
Lower step:
1), first starting power driving crank 10 when, piston 8 is towards when (upward) movement in the top of cylinder 3, the generation of crankcase 4
Negative pressure, the fuel oil that air takes through carburetor 1, meanwhile, negative pressure pump 5 is driven by the negative pressure in crankcase 4, grease-box 7 is logical
Piping/oil duct is connected to connecting tube 2, and is transported in air inlet pipe 2 at negative pressure channel center；
2), the level-one gaseous mixture being made of pure fuel oil and air that early period is mixed to form by negative pressure at 1 aditus laryngis of carburetor,
The lubricating oil quick break in negative pressure channel can be blended in level-one gaseous mixture at small oil droplet when passing through air inlet pipe, thus shape
At second level combustion mixture, because negative pressure therein is low compared with inside 1 trunnion of carburetor, so droplet diameter is big, weight is high, and only one
Part is mixed to form mixed gas with level-one gaseous mixture and enters crankcase 4, and combustion chamber is entered after scavenging and participates in burning, great Liang Jie
The about dosage of lubricating oil；
3), then, grease-box 7 is connected through pipeline/oil duct and after profit negative pressure pump 5 generates negative pressure with cylinder 3,
The duct for staying in 3 inner wall of cylinder is reached, lubricating oil is scraped when piston ring 9 is moved back and forth along 3 inner wall of cylinder, and realize to vapour
Each kinematic pair component is lubricated in cylinder 3, piston 8, piston ring 9 and engine；
4), when piston 8 is to away from 3 (downward) movement in top of cylinder, combustible gas is compressed in crankcase 4, works as scavenging port
When open, combustible gas is pressed into cylinder 3 through scavenging air belt；
5) when, piston 8 moves again up, combustible gas is compressed in cylinder 3, and pressure and temperature improves, and is fired through igniting
It burns, heated gas pressure further increases, and gas expansion pushes piston 8 to move downward the rotation of band dynamic crankshaft 10, output power；
6), when exhaust outlet is open, the exhaust gas after burning is first sprayed by pressure, then scans out 3 row of cylinder by the drive of scavenging air-flow
Out outside machine, air inlet, compression, expansion, exhaust, in cycles, crankshaft 10 constantly rotate, acting.
Wherein, pipeline/oil duct can be hose, metal material pipeline, be also possible to as shown in Figure 4 in transmission parts
Oil duct, fuel oil and lubricating oil are attached separately in two different oil cans；Air inlet pipe 2 has to be communicated with 1 negative pressure channel of carburetor
Lubricating oil oilhole；3 inner wall of cylinder has the lubricating oil oilhole for lubricating piston 8 and piston ring 9, as long as can make grease-box
7 after negative pressure pump 5 be connected to connecting tube 2 can be realized with any structure of cylinder 3 as effect, all in protection of the invention
Within the scope of.
Negative pressure pump 5 is supplied to solenoid valve using the energy that flywheel 13 rotates generation in magnetic field when engine operation, control
The size of negative pressure channel realizes the flow control of negative pressure pump.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
The change or replacement expected without creative work should all be covered subject to the scope of the present invention.
Claims (6)
1. a kind of separation lubrication layered scavenging two-stroke brush cutter dynamic structure, including fuel tank, crankcase, cylinder, carburetor,
The crankcase is fixed on the upper end of fuel tank, and the cylinder is fixed on the upper end of crankcase, is connected on the left of the crankcase
One or more connecting tube, the connecting tube other side connect carburetor, it is characterised in that: in the fuel tank left-hand end and
Grease-box is fixed with below carburetor, the grease-box is connected with connecting tube and cylinder respectively by pipeline/oil duct
It is logical.
2. a kind of separation lubrication layered scavenging two-stroke brush cutter dynamic structure according to claim 1, it is characterised in that:
It is placed with piston in the cylinder, the piston outer edge side is fixed with piston ring, above and below the piston ring and cylinder internal ring wall side
Activity friction setting.
3. a kind of separation lubrication layered scavenging two-stroke brush cutter dynamic structure according to claim 1, it is characterised in that:
Crankcase lower right corner side is further fixed on a negative pressure pump.
4. a kind of separation lubrication layered scavenging two-stroke brush cutter dynamic structure according to claim 1, it is characterised in that:
Side is further fixed on bearing before and after the crankcase, and the rotation on bearings is connected with crankshaft.
5. a kind of separation lubrication layered scavenging two-stroke brush cutter dynamic structure according to claim 1, it is characterised in that:
Be additionally provided with a connecting rod between the piston and crankshaft, described connecting rod one end is contradicted in piston side, the other end then with crankshaft
Rotation connection.
6. a kind of working method of separation lubrication layered scavenging two-stroke brush cutter dynamic structure as described in claim 1,
It is characterized in that, comprising the following steps:
1), first starting power driving crank when, piston towards cylinder top move when, crankcase generate negative pressure, air is through carburetion
Fuel oil on device band, meanwhile, negative pressure pump is driven by the negative pressure in crankcase, grease-box passes through pipeline/oil duct and connecting tube
Connection, and be transported in air inlet pipe at negative pressure channel center；
2), the level-one gaseous mixture being made of pure fuel oil and air that early period is mixed to form by negative pressure at 1 aditus laryngis of carburetor, is passing through
The lubricating oil quick break in negative pressure channel can be blended in level-one gaseous mixture at small oil droplet when crossing air inlet pipe, to form two
Grade combustion mixture enters combustion chamber and participates in burning after scavenging；
3), then, grease-box is connected through pipeline/oil duct and after negative pressure pump generates negative pressure with cylinder, and arrival stays in
The duct of cylinder inner wall scrapes lubricating oil when piston ring is moved back and forth along cylinder inner wall, and realizes to cylinder, piston, work
Each kinematic pair component is lubricated in plug ring and engine；
4), when piston away from cylinder head to when moving, combustible gas is compressed in crankcase, when scavenging port is open, combustible gas
Cylinder is pressed into through scavenging air belt；
5) when, piston moves again up, combustible gas is compressed in the cylinder, and pressure and temperature improves, and through ignition, is heated
Gas pressure further increases, and gas expansion pushes piston moves downward with dynamic crankshaft rotation, output power；
6), when exhaust outlet is open, the exhaust gas after burning is first sprayed by pressure, then scans out cylinder discharge machine by the drive of scavenging air-flow
Outside, air inlet, compression, expansion, exhaust, in cycles, crankshaft constantly rotates, acting.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910103206.XA CN109915258A (en) | 2019-02-01 | 2019-02-01 | A kind of separation lubrication layered scavenging two-stroke brush cutter dynamic structure and working method |
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| CN201910103206.XA CN109915258A (en) | 2019-02-01 | 2019-02-01 | A kind of separation lubrication layered scavenging two-stroke brush cutter dynamic structure and working method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113606034A (en) * | 2021-08-02 | 2021-11-05 | 浙江派尼尔科技股份有限公司 | Horizontal opposed gasoline engine with separated lubricating structure |
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| JPH03281910A (en) * | 1990-03-29 | 1991-12-12 | Suzuki Motor Corp | Lubricator for two-stroke engine |
| US5579735A (en) * | 1993-06-25 | 1996-12-03 | Mcculloch Corporation | Four-stroke internal combustion engine |
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| CN113606034A (en) * | 2021-08-02 | 2021-11-05 | 浙江派尼尔科技股份有限公司 | Horizontal opposed gasoline engine with separated lubricating structure |
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Address after: 321071 No. 1217 Shenli Road, Jinhua Economic Development Zone, Zhejiang Province Applicant after: Zhejiang Painier Technology Inc. Address before: 321071 No. 1217 Shenli Road, Wucheng Industrial Park, Shaoxing City, Zhejiang Province Applicant before: Zhejiang Painier Technology Inc. |
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