CN107120188A - Two-diameter piston formula two stroke engine - Google Patents
Two-diameter piston formula two stroke engine Download PDFInfo
- Publication number
- CN107120188A CN107120188A CN201710509190.3A CN201710509190A CN107120188A CN 107120188 A CN107120188 A CN 107120188A CN 201710509190 A CN201710509190 A CN 201710509190A CN 107120188 A CN107120188 A CN 107120188A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- piston
- subordinate
- higher level
- oil
- 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
- 230000001050 lubricating effect Effects 0.000 claims abstract description 18
- 239000000446 fuel Substances 0.000 claims abstract description 11
- 239000010721 machine oil Substances 0.000 claims abstract description 10
- 239000003921 oil Substances 0.000 claims description 18
- 239000010727 cylinder oil Substances 0.000 claims description 10
- 238000005192 partition Methods 0.000 claims description 4
- 239000002912 waste gas Substances 0.000 abstract description 8
- 238000002485 combustion reaction Methods 0.000 abstract description 6
- 238000003756 stirring Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 15
- 230000000694 effects Effects 0.000 description 5
- 230000002000 scavenging effect Effects 0.000 description 5
- 239000000295 fuel oil Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 239000003502 gasoline Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
-
- 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
-
- 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
- F02F3/00—Pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P15/00—Electric spark ignition having characteristics not provided for in, or of interest apart from, groups F02P1/00 - F02P13/00 and combined with layout of ignition circuits
- F02P15/08—Electric spark ignition having characteristics not provided for in, or of interest apart from, groups F02P1/00 - F02P13/00 and combined with layout of ignition circuits having multiple-spark ignition, i.e. ignition occurring simultaneously at different places in one engine cylinder or in two or more separate engine cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L2003/25—Valve configurations in relation to engine
- F01L2003/251—Large number of valves, e.g. five or more
-
- 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)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The present invention provides a kind of two-diameter piston formula two stroke engine, including top is provided with cylinder, the piston in cylinder, the crankcase below cylinder of exhaust valve and spark plug, and the piston is connected by connecting rod with the bent axle in crankcase；The piston is two-diameter piston, the shape of the cylinder matches with piston, also higher level's cylinder and subordinate's cylinder are included, higher level's air cylinder annular is provided with several transfer ports, the cylinder is externally provided with the air inlet pipe communicated with its bottom, and the upper end of the air inlet pipe is connected with a wherein transfer port and junction is provided with a fuel injector；Also include a lubricating system.This two stroke engine sets stage type piston and the cylinder with its supporting connection, realize air inlet and exhaust non-interference, stirring, burning is thorough, the energy is saved, waste gas discharge is effectively reduced, while pressure charging temperature reduction, it is also provided with lubricating system, not only high lubricating effect, effectively prevents machine oil mixed combustion, and effectively extends the service life of each parts.
Description
Technical field
The present invention relates to two stroke engine, and in particular to a kind of two-diameter piston formula two stroke engine.
Background technology
The working cycles formula of two-stroke internal combustion engine is to be completed in the time that bent axle rotates a circle in two piston strokes.
In quartastroke engine, exhaust process and intake process are often collectively referred to as scavenging period.The scavenging period in two-stroke internal combustion engine
Refer to the process of that waste gas is cleared away and replaced by new gas out of cylinder.The difference of the working cycles of both internal combustion engines mainly exists
In scavenging period.
Available engine has two stroke engine and four-stroke engine, and two stroke engine is simple in construction, light, completes
Once acting need to only be rotated a circle, but each operation parts insufficient lubrication in crankcase, and air inlet and exhaust are interfered, mutually stirred
Mix, the unburned fresh fuel gas in part is discharged together with the waste gas after burning, cause to waste；It is for the gas of burning
The mixed gas of machine oil and gasoline, burns not thorough, the exhaust emission of discharge is serious.Further, since two stroke engine is done
Work efficiency high, causes its interior temperature high, adds insufficient lubrication, and each component wear is serious, easily causes the phenomenon of scuffing of cylinder bore, reduces gas
The service life of cylinder.
The content of the invention
In view of the deficienciess of the prior art, the present invention provides a kind of two-diameter piston formula two stroke engine, this engine
Stage type piston and the cylinder with its supporting connection are set, air inlet, exhaust non-interference, stirring is realized, burning is thorough, section
About the energy, effectively reduces waste gas discharge, while playing effect of pressure charging temperature reduction, is also provided with lubricating system, not only lubricant effect
It is good, effectively prevent machine oil mixed combustion, and effectively extend the service life of each parts.
In order to achieve the above object, the technical scheme that the present invention takes：
Two-diameter piston formula two stroke engine, including top provided with the cylinder of exhaust valve, the piston in cylinder, be located at
Crankcase below cylinder, the piston is connected by connecting rod with the bent axle in crankcase；The piston is two-diameter piston, including
Cylindrical and hollow higher level's piston and subordinate's piston, and diameter of the diameter more than higher level's piston of subordinate's piston；It is described
The shape of cylinder matches with piston, also including higher level's cylinder and subordinate's cylinder, and higher level's air cylinder annular is swept provided with several
Stomata, the cylinder is externally provided with the air inlet pipe communicated with its bottom, the upper end of the air inlet pipe be connected with a wherein transfer port and
Junction is provided with a fuel injector, and the fuel injector can also be located at the top of cylinder；Also include a lubricating system, the lubricating system
Including forming a cylinder oil pocket between subordinate's cylinder and piston, the cylinder oil pocket extends returning outside cylinder provided with one
Oil pipe, the lubricating system has two kinds of lubricating systems：Higher level's piston offers the outage communicated with crankcase, and described
The piston pin of piston is vertically arranged, prevents machine oil from entering subordinate's gas in subordinate's cylinder and positioned at the lower section of piston provided with one
The internal partition of cylinder；Or an oil duct communicated with cylinder oil pocket, and the crankshaft-and-connecting-rod are offered in the crankshaft-and-connecting-rod
Two ends be equipped with Seal Oil seal.
As optimal technical scheme, in order to discharge waste gas as early as possible, time of exchanging gas is short, is conducive to improving the rotating speed of engine,
The exhaust valve set two and more than.
As optimal technical scheme, in order to improve the utilization rate of machine oil, while reducing environmental pollution, realize that energy-conservation subtracts
Row, the oil return pipe is connected with an oil collection barrel.
Compared with prior art, the device have the advantages that：
1st, this two stroke engine sets stage type piston and the cylinder with its supporting connection, realizes air inlet and exhaust not
Interfere, stir, burning is thorough, save the energy, effectively reduce waste gas discharge, while playing effect of pressure charging temperature reduction, also set
Lubricating system is put, not only high lubricating effect, effectively prevented machine oil mixed combustion, and effectively extended the service life of each parts.
The 2nd, multiple exhaust valves are set, it is ensured that discharge waste gas in cylinder as early as possible, time of exchanging gas is short, is conducive to improving engine
Rotating speed.
The 3rd, 2~3 spark plugs are set, improves the spread speed and explosive force of cylinder flame, is conducive to mixed gas more
More thoroughly burning, realizes energy-saving and emission-reduction soon.
Brief description of the drawings
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Fig. 1 is a kind of structural representation of the invention；
Fig. 2 is another structural representation of the invention；
Fig. 3 is the structural representation of piston；
Drawing reference numeral：1st, exhaust valve, 2, spark plug, 3, crankcase, 4, connecting rod, 5, bent axle, 6, higher level's piston, 7, subordinate lives
Plug, 8, higher level's cylinder, 9, subordinate's cylinder, 10, transfer port, 11, air inlet pipe, 12, cylinder oil pocket, 13, oil return pipe, 14, internal partition,
15th, leaf valve, 16, check valve, 17, fuel injector.
Embodiment
A kind of specific embodiment of the invention, two-diameter piston formula two stroke engine, including top are proposed as depicted in figs. 1 and 2
Portion is provided with cylinder, the piston in cylinder, the crankcase 3 below cylinder of exhaust valve 1, and the piston passes through connecting rod 4
It is connected with the bent axle 5 in crankcase 3；The piston is two-diameter piston, including cylindrical and hollow higher level's piston 6 and under
Level piston 7, and subordinate's piston 7 diameter be more than higher level's piston 6 diameter, as shown in figure 3, the top of higher level's piston 6 and
The top of subordinate's piston 7 is equipped with compression ring and oil seal ring, and the piston of the present embodiment is to set with traditional piston structure difference
Subordinate's piston 7；The shape of the cylinder matches with piston, also including higher level's cylinder 8 and subordinate's cylinder 9, higher level's gas
The annular of cylinder 9 is provided with several transfer ports 10, and all transfer ports 10 are communicated, and the present embodiment sets 2, and the cylinder is externally provided with and it
The air inlet pipe 11 that bottom is communicated, the inlet end of the air inlet pipe 11 is provided with a leaf valve 15, is additionally provided with a check valve 16, institute thereon
The upper end for stating air inlet pipe 11 is connected and junction is provided with a fuel injector 17 with a wherein transfer port 10, and the fuel injector 17 also may be used
In cylinder head, to belong to direct-injection mode, Diesel engine is can be applied to, the fuel injector 17 of the present embodiment is located at air inlet pipe 15
On, belong to gas manifold inlet spray regime, applied to being additionally provided with spark plug 2, and the spark at the top of petrol engine, and cylinder
Plug sets 2~3, and the present embodiment sets 2, in order to improve the spread speed and explosive force of cylinder flame, is conducive to mixing
Gas faster more thoroughly burning, realizes energy-saving and emission-reduction；This two stroke engine also includes a lubricating system, the lubricating system bag
Include and a cylinder oil pocket 12 is formed between subordinate's cylinder 9 and piston, the cylinder oil pocket 12 extends outside cylinder provided with one
Oil return pipe 13, the lubricating system has two kinds of lubricating systems：Higher level's piston 6 offers the oil extraction communicated with crankcase 3
Machine oil is filled in hole, the crankcase 3, and the piston pin of the piston is vertically arranged, in subordinate's cylinder 7 and positioned at work
The lower section of plug prevents machine oil from entering the internal partition 14 of subordinate's cylinder 6 provided with one, as shown in Figure 1；Or in the bent axle 5, connecting rod 4
An oil duct communicated with cylinder oil pocket 13 is offered, and the bent axle 5, the two ends of connecting rod 4 are equipped with Seal Oil seal, such as Fig. 2
It is shown.
The exhaust valve 1 sets two and the above and the top for being symmetrically set in cylinder, and quantity and the area of exhaust valve 1 are determined
Determine the exhaust quality of cylinder and the rotating speed of engine, the present embodiment sets 2 exhaust valves, it is ensured that discharge waste gas in cylinder as early as possible,
Time of exchanging gas is short, is conducive to improving the rotating speed of engine.
The oil return pipe 13 is connected with an oil collection barrel, is on the one hand improved the utilization rate of machine oil, is on the other hand reduced to environment
Pollution, realizes energy-saving and emission-reduction.
When the present invention is used：Piston is travelled from top dead centre to lower dead center, when coming downwards to exhaust angle, two exhaust valves 1
Opening is exhausted, and when the inlet end of descent of piston to air inlet pipe 11, fresh air starts to sweep into cylinder with swirling manner
Gas, when swept volume accounts for total air inflow 25%, now fuel injector 17 starts to enter in cylinder with the gas jet fuel oil that enters below, both
Prevent fuel oil is unburned from just discharging, while also effectively reducing the temperature of cylinder；Check valve 16 ensures that gas can not backflow and is back to song
In axle box 3, when piston stroking upward to exhaust valve closing angle, exhaust valve 1 is closed, because air inflow is more than acting tolerance, part
Air reaches the effect that scavenging cools with scavenging discharge, and air inflow still reaches volume of cylinder when being closed to exhaust valve 1
1.3 times, pressurized effect is so reached, when piston continues to go upward to compression ignition point, a circulation job is completed.This two-stroke is sent out
Motivation is applied to the fuel engines such as gasoline, diesel oil, kerosene, heavy oil.
Certainly, simply the preferred embodiments of the disclosure is described in detail with reference to accompanying drawing above, not with this
The practical range of the present invention is limited, the equivalence changes that all principles under this invention, construction and structure are made all should be covered by this
In the protection domain of invention.
Claims (3)
1. two-diameter piston formula two stroke engine, including cylinder of the top provided with exhaust valve (1), the piston in cylinder, set
Crankcase (3) below cylinder, the piston is connected by connecting rod (4) with the bent axle (5) in crankcase (3)；Its feature exists
In：The piston is two-diameter piston, including cylindrical and hollow higher level's piston (6) and subordinate's piston (7), and subordinate's work
The diameter for filling in (7) is more than the diameter of higher level's piston (6)；The shape of the cylinder matches with piston, also including higher level's cylinder (8)
With subordinate's cylinder (9), the annular of higher level's cylinder (8) is provided with several transfer ports (10), and the cylinder is externally provided with and its bottom
The air inlet pipe (11) communicated is held, the upper end of the air inlet pipe (11) is connected with a wherein transfer port (10) and junction is provided with one
Fuel injector (17), the fuel injector (17) can also be located at the top of cylinder；Also include a lubricating system, the lubricating system includes
Subordinate's cylinder (9) forms a cylinder oil pocket (12) between piston, and the cylinder oil pocket (12) is provided with an extension outlet
Oil return pipe (13) outside cylinder, the lubricating system has two kinds of lubricating systems：Higher level's piston (6) offers and crankcase (3)
The outage communicated, and the piston pin of the piston is vertically arranged, is set in subordinate's cylinder (9) and below piston
There is one to prevent machine oil from entering the internal partition (14) of subordinate's cylinder (8)；Or offer one and gas in the bent axle (5), connecting rod (4)
The oil duct that cylinder oil pocket is communicated, and the two ends of the bent axle (5) and connecting rod (4) are equipped with Seal Oil seal.
2. two-diameter piston formula two stroke engine according to claim 1, it is characterised in that：The exhaust valve (1) is set
Two and more than.
3. two-diameter piston formula two stroke engine according to claim 1 or 2, it is characterised in that：The oil return pipe (13)
It is connected with an oil collection barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710509190.3A CN107120188A (en) | 2017-06-28 | 2017-06-28 | Two-diameter piston formula two stroke engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710509190.3A CN107120188A (en) | 2017-06-28 | 2017-06-28 | Two-diameter piston formula two stroke engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107120188A true CN107120188A (en) | 2017-09-01 |
Family
ID=59719983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710509190.3A Pending CN107120188A (en) | 2017-06-28 | 2017-06-28 | Two-diameter piston formula two stroke engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107120188A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4481909A (en) * | 1982-02-19 | 1984-11-13 | Kawasaki Jukogyo Kabushiki Kaisha | Two-cycle internal combustion engine |
| WO1987005359A1 (en) * | 1986-03-07 | 1987-09-11 | Bennett Automotive Technology Pty. Ltd. | Two stroke engine with isolated crankcase |
| CN2130928Y (en) * | 1992-03-04 | 1993-04-28 | 马真理 | Two-stroke engine |
| JPH05118225A (en) * | 1991-10-24 | 1993-05-14 | Kawasaki Heavy Ind Ltd | Two cycle engine having stepped piston |
| CN1215130A (en) * | 1997-10-22 | 1999-04-28 | 李春泥 | Two-stroke engine |
| US7337759B1 (en) * | 2006-10-05 | 2008-03-04 | Chen Yung-Ching | Engine |
| CN206903747U (en) * | 2017-06-28 | 2018-01-19 | 班克杰 | Two-diameter piston formula two stroke engine |
-
2017
- 2017-06-28 CN CN201710509190.3A patent/CN107120188A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4481909A (en) * | 1982-02-19 | 1984-11-13 | Kawasaki Jukogyo Kabushiki Kaisha | Two-cycle internal combustion engine |
| WO1987005359A1 (en) * | 1986-03-07 | 1987-09-11 | Bennett Automotive Technology Pty. Ltd. | Two stroke engine with isolated crankcase |
| JPH05118225A (en) * | 1991-10-24 | 1993-05-14 | Kawasaki Heavy Ind Ltd | Two cycle engine having stepped piston |
| CN2130928Y (en) * | 1992-03-04 | 1993-04-28 | 马真理 | Two-stroke engine |
| CN1215130A (en) * | 1997-10-22 | 1999-04-28 | 李春泥 | Two-stroke engine |
| US7337759B1 (en) * | 2006-10-05 | 2008-03-04 | Chen Yung-Ching | Engine |
| CN206903747U (en) * | 2017-06-28 | 2018-01-19 | 班克杰 | Two-diameter piston formula two stroke engine |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for 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: 20170901 |