CN106089473A - Two stroke engine cylinder body extended type enclosed scavenging path - Google Patents
Two stroke engine cylinder body extended type enclosed scavenging path Download PDFInfo
- Publication number
- CN106089473A CN106089473A CN201610675585.6A CN201610675585A CN106089473A CN 106089473 A CN106089473 A CN 106089473A CN 201610675585 A CN201610675585 A CN 201610675585A CN 106089473 A CN106089473 A CN 106089473A
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- gaseous mixture
- scavenging
- air belt
- air
- 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.)
- Granted
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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
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- 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
- F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
- F02B25/20—Means for reducing the mixing of charge and combustion residues or for preventing escape of fresh charge through outlet ports not provided for in, or of interest apart from, subgroups F02B25/02 - F02B25/18
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- 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
- F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
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- 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
- F02B2700/00—Measures relating to the combustion process without indication of the kind of fuel or with more than one fuel
- F02B2700/03—Two stroke engines
- F02B2700/037—Scavenging or charging channels or openings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- 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)
- Supercharger (AREA)
Abstract
The present invention relates to general small-size two stroke engine technical field, particularly to two stroke engine cylinder body extended type enclosed scavenging path.It is provided with gaseous mixture air storing cavity below cylinder body air vent to connect with crankcase, cylinder body scavenging air belt is divided into independent two scavenging air belt by the partition wall on side cover, article two, scavenging air belt passes to the connection of gaseous mixture air storing cavity and crankcase respectively, and cylinder body flange face is designed with recess channels connection gaseous mixture air storing cavity and another enclosed scavenging air belt.Cylinder body flange face coordinates with the thin plate being designed with through hole, so that gaseous mixture enters cylinder body by gaseous mixture air storing cavity, passage, enclosed scavenging air belt respectively, with chill vent side, and increases the length of enclosed scavenging air belt.The increasing of enclosed scavenging air belt length is conducive to the layering of pure air and gaseous mixture, improves pure air guide and clear away tail gas stability, can be effectively improved the power of electromotor, high low-speed stability, reduce exhaust emissions.
Description
Technical field
The present invention relates to general small-size two stroke engine technical field, start particularly to a kind of layered scavenging two-stroke
Machine cylinder body extended type enclosed scavenging path.
Background technology
Layered scavenging two-stroke engine has employing store portion of air in scavenging air belt in advance to take the lead in scavenging, to subtract
The phenomenon that few gaseous mixture is expelled directly out with waste gas without burning, thus effectively reduce harmful components such as HC and the CO chemical combination in tail gas
Thing.Test proves that, under same displacement, same traffic, same speed conditions, layered-scavenging engine power is significantly larger than tradition two
Stroke Engine, according to preservation of energy, mixture combustion is more complete in the case, and release heat is more, engine heat load
Bigger, especially exhaust side；
Have verified that the length increase of enclosed scavenging air belt contributes to the layering of gaseous mixture and pure air, improve pure air guide cleaning
Tail gas stability, reduce gaseous mixture loss, improve gaseous mixture scavenging stability, improve scavenging speed, stablize scavenging direction,
The power of electromotor, high low-speed stability can be effectively improved, reduce exhaust emissions.
Summary of the invention
It is an object of the invention to provide one and can increase enclosed scavenging air belt length, and simple in construction, mould can realize, cost
Low, easily process, also have cooling cylinder body exhaust side effect two stroke engine cylinder body enclosed scavenging path.
Technical scheme: a kind of two stroke engine cylinder body extended type enclosed scavenging path, including cylinder body, side cover
And sheet member, it is characterised in that: it is provided with the gaseous mixture air storing cavity connected with crankcase below cylinder body air vent；Cylinder body is joined with side cover
The enclosed scavenging air belt formed after conjunction is divided into independent two, wherein an enclosed scavenging air belt and gaseous mixture by the partition wall on side cover
Air storing cavity passes through channel connection, and another enclosed scavenging air belt is opened on cylinder body flange face and leads directly to crankcase, on cylinder body flange face also
It is communicated with the recess channels of gaseous mixture air storing cavity and enclosed scavenging air belt；Cylinder body flange face coordinates with the sheet member being provided with opening,
So that gaseous mixture enters cylinder body by gaseous mixture air storing cavity, recess channels, enclosed scavenging air belt respectively.
Preferably, described enclosed scavenging air belt is separately positioned on the left and right sides of cylinder body.
Preferably, described enclosed scavenging air belt is connected with gaseous mixture air storing cavity by least one passage.
Preferably, the described gaseous mixture air storing cavity connected with crankcase at least one.
Preferably, the opening of described sheet member is opened with the enclosed scavenging air belt opening on cylinder body flange face, gaseous mixture air storing cavity
Mouth size matches.
Provide the benefit that: this scavenging path is by with the use of opening sheet member, and the gaseous mixture that can realize crankcase passes through
The gaseous mixture air storing cavity of exhaust side enters a wherein enclosed scavenging air belt, eventually enters into cylinder body combustion chambers burn, to realize closing
The increase of formula scavenging air belt length, and by the gaseous mixture cooling exhaust side of the constantly lower temperature of flowing.Test proves enclosed
The increasing of scavenging air belt length is conducive to the layering of pure air and gaseous mixture, improves pure air guide and clear away tail gas stability, reduction
The loss of gaseous mixture, improve the stability of gaseous mixture scavenging, improve scavenging speed, stablize scavenging direction, can be effectively improved and start
The power of machine, high low-speed stability, reduction exhaust emissions.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the present invention, originally shows
Meaning property embodiment and explanation thereof are used for explaining the present invention, are not intended that inappropriate limitation of the present invention.
Fig. 1 is that the scavenging path on cylinder body flange face and mixed airflow are to schematic diagram；
Fig. 2 is the thin plate schematic diagram of a kind of aperture position；
Fig. 3 be after opening sheet member coordinates with cylinder body flange face mixed airflow to schematic diagram；
Fig. 4 is that cylinder body side scavenging air belt coordinates with side cover and mixed airflow is to schematic diagram；
Fig. 5 is that A-A sectional view and mixed airflow are to schematic diagram；
Fig. 6 is B-B to sectional view and mixed airflow to schematic diagram；
Fig. 7 is C-C to sectional view and mixed airflow to schematic diagram；
Fig. 8 is that cylinder body opposite side scavenging air belt coordinates with side cover and mixed airflow is to schematic diagram.
Sequence number explanation in accompanying drawing: 1, cylinder body；2, the right scavenging port of cylinder body；3, right enclosed scavenging air belt one；3-1, right scavenging air belt one；
3-2, right cap scavenging air belt one；4, right enclosed scavenging air belt two；4-1, right scavenging air belt two；4-2, right cap scavenging air belt two；5, passage
One；6, gaseous mixture air storing cavity one；7, gaseous mixture air storing cavity two；8, passage two；9, air vent；10, right cap；11, left cap；
12, left enclosed scavenging air belt two；12-1, left scavenging air belt two；12-2, left cap scavenging air belt two；13, cylinder body flange face；14, groove
Passage one；15, recess channels two；16, sheet member；17, opening three；18, opening two；19, opening one；20, left enclosed scavenging air belt
One；20-1, left scavenging air belt one；20-2, left cap scavenging air belt one；21, left cap partition wall；22, the left scavenging port of cylinder body；23, right side
Lid partition wall；24, partition wall.A, b, c, d, mixed airflow are to path.
Detailed description of the invention
As shown in Fig. 1～Fig. 8, two stroke engine cylinder body extended type enclosed scavenging path, mainly by cylinder body combination with thin
Plate 16 is constituted, i.e. cylinder body combination includes the cylinder body right scavenging port of 1(cylinder body 2, right scavenging air belt one 3-1, right scavenging air belt two 4-1, passage
One 5, gaseous mixture air storing cavity 1, gaseous mixture air storing cavity 27, passage 28, air vent 9, left scavenging air belt one 20-1, left scavenging air belt two
12-1, cylinder body flange face 13, recess channels 1, recess channels 2 15, the left scavenging port of cylinder body 22, partition wall 24), right cap 10
(right cap partition wall 23, right cap scavenging air belt one 3-2, right cap scavenging air belt two 4-2), left cap 11(left cap partition wall 21, left side
Lid scavenging air belt one 20-2, left cap scavenging air belt two 12-2) and sheet member 16(opening 3 17, opening 2 18, opening 1).
As shown in Fig. 4, Fig. 5, Fig. 7, Fig. 8, cylinder body combination is mainly made up of cylinder body 1, right cap 10, left cap 11.Wherein,
Right cap scavenging air belt one 3-2, right cap scavenging air belt two 4-2 that right cap 10 is divided into by right cap partition wall 23, respectively with cylinder body 1
On right scavenging air belt one 3-1, right scavenging air belt two 4-1 separately constitute right enclosed scavenging air belt 1, right enclosed scavenging air belt 24.
As shown in Figure 8, left cap 11 is divided into by left cap partition wall 21 left cap scavenging air belt one 20-2, left cap scavenging
Road two 12-2, separately constitutes left enclosed scavenging air belt one with left scavenging air belt one 20-1 on cylinder body 1, left scavenging air belt two 12-1 respectively
20, left enclosed scavenging air belt 2 12.
Wherein, left enclosed scavenging air belt 1, right enclosed scavenging air belt 1 are opened on cylinder body flange face 13, direct and crankcase
Connection, as shown in Figure 1, Figure 3.
As shown in Figure 6, cylinder body 1 air vent has gaseous mixture air storing cavity 1, gaseous mixture air storing cavity 27 along envisaged underneath 9 times,
This two air storing cavity can be split by partition wall 24, it is possible to connection forms an air storing cavity.Wherein gaseous mixture air storing cavity 1 passes through passage
One 5 connect with right enclosed scavenging air belt 24, and gaseous mixture air storing cavity 27 is connected with left enclosed scavenging air belt 2 12 by passage 28.
As shown in Figure 1, Figure 2, Figure 3 shows, enter at cylinder body flange face 13 upper left enclosed scavenging air belt 1, right enclosed scavenging air belt 1
Mouth is communicated to gaseous mixture air storing cavity 27, the entering of gaseous mixture air storing cavity 1 by recess channels 2 15, recess channels 1 respectively
Mouthful, when cylinder body flange face 13 is with the use of sheet member 16, the opening 3 17 in sheet member 16 enters with left enclosed scavenging air belt 1
Mouth coordinates, and opening 1 coordinates with right enclosed scavenging air belt 1 entrance, opening 2 18 and gaseous mixture air storing cavity 27, gaseous mixture gas storage
Chamber 1 entrance coordinates, and gaseous mixture can pass through recess channels 2 15, recess channels 1 realizes two-way flow, to improve gaseous mixture
Scavenging stability.
Specific works process:
A mixed airflow is as follows to path: the opening one 19 → right enclosed scavenging in gaseous mixture → sheet member 16 in crankcase
In road one 3 → cylinder body right scavenging port 2 → cylinder body 1.
B mixed airflow is as follows to path: the opening 2 18 → gaseous mixture in gaseous mixture → sheet member 16 in crankcase
In air storing cavity one 6 → passage one 5 → right enclosed scavenging air belt 24 → cylinder body right scavenging port 2 → cylinder body 1.
C mixed airflow is as follows to path: the opening 2 18 → gaseous mixture in gaseous mixture → sheet member 16 in crankcase
In air storing cavity 27 → passage 28 → left enclosed scavenging air belt 2 12 → cylinder body right scavenging port 2 → cylinder body 1.
D mixed airflow is as follows to path: the opening 3 17 → left enclosed in gaseous mixture → sheet member 16 in crankcase
In scavenging air belt one 20 → cylinder body left scavenging port 22 → cylinder body 1.
B, c mixed airflow can be effectively increased to path through the length of enclosed scavenging air belt, in gaseous mixture air storing cavity constantly
The gaseous mixture of the lower temperature of flowing can cool down cylinder body exhaust side.
Provide the benefit that: this scavenging path is by with the use of opening sheet member, and the gaseous mixture that can realize crankcase passes through
The gaseous mixture air storing cavity of exhaust side enters a wherein enclosed scavenging air belt, eventually enters into cylinder body combustion chambers burn, to realize closing
The increase of formula scavenging air belt length, and the gaseous mixture cooling cylinder body aerofluxus of the lower temperature by constantly flowing in gaseous mixture air storing cavity
Mouth side, reduces engine heat load, improves engine reliability.Test proves that the increase of enclosed scavenging air belt length is conducive to pure sky
The layering of gas and gaseous mixture, improve pure air guide and clear away tail gas stability, the loss reducing gaseous mixture, improve gaseous mixture scavenging
Stability, improve scavenging speed, stablize scavenging direction, can be effectively improved the power of electromotor, high low-speed stability, reduction tail
Gas discharges.
Although above the enforcement structure of the present invention, method being described in detail, but, the present invention is not limited to this,
In the range of without departing from the technological thought of the present invention and purpose, those skilled in the art can in shape, size, other is detailed
Fine texture aspect, carries out modification to described embodiment, and done modification is still included in the present invention.
Claims (5)
1. a two stroke engine cylinder body extended type enclosed scavenging path, including cylinder body, side cover and sheet member, its feature exists
In: it is provided with the gaseous mixture air storing cavity connected with crankcase below cylinder body air vent；The enclosed that cylinder body is formed after coordinating with side cover is swept
Air flue is divided into independent two by the partition wall on side cover, and wherein an enclosed scavenging air belt is with gaseous mixture air storing cavity by passage even
Logical, another enclosed scavenging air belt is opened on cylinder body flange face and leads directly to crankcase, and cylinder body flange face is additionally provided with connection gaseous mixture storage
Air cavity and the recess channels of enclosed scavenging air belt；Cylinder body flange face coordinates with the sheet member being provided with opening, so that gaseous mixture leads to respectively
Cross gaseous mixture air storing cavity, recess channels, enclosed scavenging air belt entrance cylinder body.
Two stroke engine cylinder body extended type enclosed scavenging path the most according to claim 1, it is characterised in that close described in:
Formula scavenging air belt is separately positioned on the left and right sides of cylinder body.
Two stroke engine cylinder body extended type enclosed scavenging path the most according to claim 1, it is characterised in that close described in:
Formula scavenging air belt is connected with gaseous mixture air storing cavity by least one passage.
Two stroke engine cylinder body extended type enclosed scavenging path the most according to claim 1, it is characterised in that: described with
Crankcase connection gaseous mixture air storing cavity at least one.
Two stroke engine cylinder body extended type enclosed scavenging path the most according to claim 1, it is characterised in that: described thin
The opening of plate matches with the enclosed scavenging air belt opening on cylinder body flange face, gaseous mixture air storing cavity opening size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610675585.6A CN106089473B (en) | 2016-08-17 | 2016-08-17 | Two stroke engine cylinder body extended type enclosed scavenging path |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610675585.6A CN106089473B (en) | 2016-08-17 | 2016-08-17 | Two stroke engine cylinder body extended type enclosed scavenging path |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106089473A true CN106089473A (en) | 2016-11-09 |
| CN106089473B CN106089473B (en) | 2018-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610675585.6A Active CN106089473B (en) | 2016-08-17 | 2016-08-17 | Two stroke engine cylinder body extended type enclosed scavenging path |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826719A (en) * | 2019-03-20 | 2019-05-31 | 山东华盛农业药械有限责任公司 | Two-stroke gasoline engine cylinder body |
-
2016
- 2016-08-17 CN CN201610675585.6A patent/CN106089473B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826719A (en) * | 2019-03-20 | 2019-05-31 | 山东华盛农业药械有限责任公司 | Two-stroke gasoline engine cylinder body |
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| Publication number | Publication date |
|---|---|
| CN106089473B (en) | 2018-04-10 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Extended closed scavenging passage for cylinder block of two-stroke engine Effective date of registration: 20211230 Granted publication date: 20180410 Pledgee: China Construction Bank Corporation Linyi Luozhuang sub branch Pledgor: SHANDONG HUASHENG PESTICIDE MACHINERY Co.,Ltd. Registration number: Y2021980017162 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230829 Granted publication date: 20180410 Pledgee: China Construction Bank Corporation Linyi Luozhuang sub branch Pledgor: SHANDONG HUASHENG PESTICIDE MACHINERY Co.,Ltd. Registration number: Y2021980017162 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |