CN114542316A - Cylinder sleeve structure - Google Patents
Cylinder sleeve structure Download PDFInfo
- Publication number
- CN114542316A CN114542316A CN202210230116.9A CN202210230116A CN114542316A CN 114542316 A CN114542316 A CN 114542316A CN 202210230116 A CN202210230116 A CN 202210230116A CN 114542316 A CN114542316 A CN 114542316A
- Authority
- CN
- China
- Prior art keywords
- cylinder sleeve
- cylinder
- scavenging
- cylinder liner
- sleeve
- 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
Links
Images
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
- F02F1/004—Cylinder liners
-
- 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
- F02F1/02—Cylinders; Cylinder heads having cooling means
- F02F1/10—Cylinders; Cylinder heads having cooling means for liquid cooling
- F02F1/16—Cylinder liners of wet type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/18—Other cylinders
- F02F1/22—Other cylinders characterised by having ports in cylinder wall for scavenging or charging
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F11/00—Arrangements of sealings in combustion engines
- F02F11/005—Arrangements of sealings in combustion engines involving cylinder liners
-
- 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
-
- 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
- F02B25/02—Engines characterised by using fresh charge for scavenging cylinders using unidirectional scavenging
-
- 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)
Abstract
The invention discloses a cylinder sleeve structure, comprising: cylinder liner upper portion, cylinder liner lower part, support step, O type ring groove and a plurality of scavenging hole. The lower part of the cylinder sleeve is arranged below the upper part of the cylinder sleeve, and the lower part of the cylinder sleeve and the upper part of the cylinder sleeve are coaxially arranged. The supporting step is arranged above the upper part of the cylinder sleeve. The O-shaped ring groove is arranged between the upper part of the cylinder sleeve and the lower part of the cylinder sleeve. And the plurality of scavenging holes are uniformly formed in the lower part of the cylinder sleeve and used for scavenging the engine. The height of the plurality of scavenging holes on the lower part of the cylinder sleeve is positioned at the position of the bottom dead center of the piston. Therefore, the cylinder sleeve structure is simple and reasonable in structure, and can meet the requirement of scavenging capacity of the two-stroke engine.
Description
Technical Field
The invention relates to the technical field of two-stroke engines, in particular to a cylinder sleeve structure.
Background
With the improvement of the requirements of the social and economic activities on the dynamic property, the economical efficiency, the adaptability and the like of the vehicle, the light weight, the safety, the applicability and the dynamic property of the vehicle and parts thereof become a promotion direction which gets a great attention. The current cylinder sleeve structure is a single structure, either wet or dry, and has no cylinder sleeve structure suitable for a two-stroke engine.
Aiming at the defect that the cylinder sleeve structure of the existing two-stroke diesel engine is not adaptive, a new cylinder sleeve structure is urgently needed to solve the defect.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a cylinder sleeve structure which is simple and reasonable in structure and can meet the requirement of scavenging amount of a two-stroke engine.
To achieve the above object, the present invention provides a cylinder liner structure including: the air cylinder sleeve comprises an upper portion of the air cylinder sleeve, a lower portion of the air cylinder sleeve, a supporting step, an O-shaped ring groove and a plurality of scavenging holes. The lower portion of the cylinder sleeve is arranged below the upper portion of the cylinder sleeve, and the lower portion of the cylinder sleeve and the upper portion of the cylinder sleeve are coaxially arranged. The support step is disposed above an upper portion of the cylinder liner. The O-shaped ring groove is arranged between the upper part of the cylinder sleeve and the lower part of the cylinder sleeve. And the plurality of scavenging holes are uniformly formed in the lower part of the cylinder sleeve and used for scavenging the engine. The height of the plurality of scavenging holes on the lower part of the cylinder sleeve is positioned at the position of the bottom dead center of the piston.
In one or more embodiments, the cylinder liner structure further includes an O-ring disposed in the O-ring groove.
In one or more embodiments, the number of the plurality of scavenging holes is nine, and the nine scavenging holes are uniformly provided on one side of the lower portion of the cylinder liner.
In one or more embodiments, each scavenging hole has a width of 8 mm and a height of 20 mm.
In one or more embodiments, the opening direction center line of the scavenging hole is tangent to a circle half the diameter of the cylinder bore.
In one or more embodiments, the two scavenging holes have a centerline angle of 18 degrees.
Compared with the prior art, the cylinder sleeve structure is simple and reasonable in structure, and can meet the requirement of scavenging capacity of a two-stroke engine.
Drawings
Fig. 1 is a front view structural diagram of a cylinder liner structure according to an embodiment of the present invention.
Fig. 2 is a sectional structural view of a cylinder liner structure according to an embodiment of the present invention.
Description of the main reference numerals:
1-upper part of cylinder jacket, 2-lower part of cylinder jacket, 3-supporting step, 4-scavenging hole and 5-O-shaped ring groove.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
Fig. 1 is a front view structural diagram of a cylinder liner structure according to an embodiment of the present invention. Fig. 2 is a sectional structural view of a cylinder liner structure according to an embodiment of the present invention.
As shown in fig. 1 to 2, a cylinder liner structure according to an embodiment of the present invention includes: cylinder liner upper portion 1, cylinder liner lower portion 2, support step 3, O type ring groove 5 and a plurality of scavenge air hole 4. The cylinder liner lower portion 2 is disposed below the cylinder liner upper portion 1, and the cylinder liner lower portion 2 is disposed coaxially with the cylinder liner upper portion 1. The support step 3 is provided above the cylinder liner upper portion 1. The O-ring groove 5 is provided between the cylinder liner upper portion 1 and the cylinder liner lower portion 2. And the plurality of scavenging holes 4 are uniformly arranged on the lower part 2 of the cylinder sleeve, and the plurality of scavenging holes 4 are used for scavenging the engine. The height of the plurality of scavenging holes 4 on the lower part 2 of the cylinder sleeve is positioned at the position of the bottom dead center of the piston.
In one or more embodiments, the cylinder liner structure further includes an O-ring seal disposed in the O-ring groove 5.
In one or more embodiments, the number of the plurality of scavenging holes 4 is nine, and the nine scavenging holes 4 are uniformly provided on one side of the liner lower portion 2. Each scavenging hole 4 has a width of 8 mm and a height of 20 mm.
In one or more embodiments, the opening direction center line of the scavenging hole 4 is tangent to a circle that is half the cylinder bore diameter. The central line included angle of the two scavenging holes 4 is 18 degrees.
In practical application, the cylinder liner structure of the present invention is a wet cylinder liner, and the cylinder liner includes a cylinder liner upper portion 1, a cylinder liner lower portion 2, a support step 3, an O-ring groove 5, and a scavenging hole 4. The wet cylinder sleeve mainly comprises a seal and a supporting piston which do mechanical motion such as up-down acting and the like, and the second stroke of the two-stroke engine is as follows: the piston moves from the top dead center to the bottom dead center. When the compression process is finished, high-pressure diesel oil is sprayed into the cylinder through the oil sprayer and is automatically ignited and combusted. The high-temperature and high-pressure combustion gas pushes the piston to do work. When the piston moves down 2/3 stroke, the exhaust valve is opened, and the exhaust gas is discharged through the exhaust valve. The piston continues moving downwards, the air inlet hole is opened, and air from the scavenging pump enters the air cylinder through the air inlet hole to scavenge. The scavenging process continues until the intake port is closed as the piston moves upward.
As shown in fig. 2, the scavenging hole 4 of the internal structure of the scavenging hole 4 on the cylinder liner lower part 2 is opened at one side of the cylinder liner lower part 2, the height direction is at the position of the lower dead point of the piston, the width is 8 mm, the height is 20 mm, and the central connecting line of the opening direction is tangent to a semicircle of the inner hole diameter of the cylinder. Nine scavenging holes 4 are formed, and the included angle between the central lines of the two holes is degree, so that the scavenging capacity requirement of the two-stroke engine can be met.
In a word, the cylinder sleeve structure is simple and reasonable in structure, and can meet the requirement of scavenging amount of the two-stroke engine.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (6)
1. A cylinder liner structure, characterized by comprising:
an upper portion of the cylinder liner;
the lower part of the cylinder sleeve is arranged below the upper part of the cylinder sleeve, and the lower part of the cylinder sleeve and the upper part of the cylinder sleeve are coaxially arranged;
a support step provided above an upper portion of the cylinder liner;
the O-shaped ring groove is arranged between the upper part of the cylinder sleeve and the lower part of the cylinder sleeve; and
the scavenging holes are uniformly arranged on the lower part of the cylinder sleeve and are used for scavenging the engine;
wherein the height of the plurality of scavenging holes on the lower part of the cylinder sleeve is at the position of the piston bottom dead center.
2. The cylinder liner structure according to claim 1, further comprising an O-ring disposed in the O-ring groove.
3. The cylinder liner structure according to claim 1, characterized in that the plurality of scavenging holes are nine in number, and nine scavenging holes are uniformly provided on one side of the cylinder liner lower portion.
4. A cylinder liner structure according to claim 3, wherein each of the scavenging holes has a width of 8 mm and a height of 20 mm.
5. The cylinder liner structure according to claim 3, wherein the opening direction center line of the scavenging hole is tangent to a circle of half of the cylinder bore diameter.
6. The cylinder liner structure according to claim 3, wherein the included angle between the center lines of the two scavenging holes is 18 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210230116.9A CN114542316B (en) | 2022-03-09 | 2022-03-09 | Cylinder sleeve structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210230116.9A CN114542316B (en) | 2022-03-09 | 2022-03-09 | Cylinder sleeve structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114542316A true CN114542316A (en) | 2022-05-27 |
| CN114542316B CN114542316B (en) | 2024-08-20 |
Family
ID=81663663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210230116.9A Active CN114542316B (en) | 2022-03-09 | 2022-03-09 | Cylinder sleeve structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114542316B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK503283D0 (en) * | 1982-11-04 | 1983-11-03 | Mitsubishi Heavy Ind Ltd | CYLINDER LINING TO A TWO-TURN COMBUSTION ENGINE |
| JPH0610758A (en) * | 1992-06-23 | 1994-01-18 | Mitsubishi Heavy Ind Ltd | Scavenging port in two-cycle diesel-engine |
| CN204804963U (en) * | 2015-01-27 | 2015-11-25 | 安徽中鼎动力有限公司 | Horizontal opposition piston of two cycle, opposition cylinder engine cylinder jacket |
| CN207229240U (en) * | 2017-09-25 | 2018-04-13 | 天津海运职业学院 | A kind of two stroke diesel engine uniflow scavenging structure |
| CN112780437A (en) * | 2021-01-19 | 2021-05-11 | 山东交通学院 | Novel cross head type two-stroke direct-current scavenging piston device |
| CN217421367U (en) * | 2022-03-09 | 2022-09-13 | 广西玉柴机器股份有限公司 | Cylinder sleeve structure |
-
2022
- 2022-03-09 CN CN202210230116.9A patent/CN114542316B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK503283D0 (en) * | 1982-11-04 | 1983-11-03 | Mitsubishi Heavy Ind Ltd | CYLINDER LINING TO A TWO-TURN COMBUSTION ENGINE |
| JPH0610758A (en) * | 1992-06-23 | 1994-01-18 | Mitsubishi Heavy Ind Ltd | Scavenging port in two-cycle diesel-engine |
| CN204804963U (en) * | 2015-01-27 | 2015-11-25 | 安徽中鼎动力有限公司 | Horizontal opposition piston of two cycle, opposition cylinder engine cylinder jacket |
| CN207229240U (en) * | 2017-09-25 | 2018-04-13 | 天津海运职业学院 | A kind of two stroke diesel engine uniflow scavenging structure |
| CN112780437A (en) * | 2021-01-19 | 2021-05-11 | 山东交通学院 | Novel cross head type two-stroke direct-current scavenging piston device |
| CN217421367U (en) * | 2022-03-09 | 2022-09-13 | 广西玉柴机器股份有限公司 | Cylinder sleeve structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114542316B (en) | 2024-08-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7185614B2 (en) | Double bowl piston | |
| US7370627B2 (en) | Optimized low emission two-stroke internal combustion diesel engine | |
| SE9902113D0 (en) | Internal combustion engine | |
| EP0918137A2 (en) | Rotary engine | |
| CN102667093B (en) | Internal combustion piston engine assembly | |
| CN215057744U (en) | Horizontally-opposed multi-cylinder two-stroke in-cylinder direct injection engine | |
| CN217421367U (en) | Cylinder sleeve structure | |
| US3177861A (en) | Internal combustion engine | |
| CN114135390A (en) | An engine and a vehicle having the same | |
| CN106523149B (en) | A kind of opposed pistons gasoline engine dual reflux scavenging combustion system | |
| CN114542316A (en) | Cylinder sleeve structure | |
| CN105201642A (en) | Six-travel gradual addition type gasoline and diesel engine | |
| KR920701621A (en) | 2-stroke internal combustion engine with diesel-compressed ignition | |
| CN103742263B (en) | Connecting rod piston formula combined burning room is without dead point Reciprocatory internal-combustion engine | |
| EP2063081A1 (en) | Piston crown with double re-entrant piston bowl | |
| US7895978B2 (en) | Non-polluting two-stroke engine with air-cooled piston | |
| US4138971A (en) | Crankchamber precompression type two-cycle internal combustion engines | |
| CN113513424A (en) | Two-stroke diesel engine and air intake method thereof | |
| CN2130928Y (en) | Two-stroke engine | |
| CN206903747U (en) | Two-diameter piston formula two stroke engine | |
| CN203702338U (en) | Dead-point-free reciprocating internal combustion engine with connecting rod piston type combination combustor | |
| CN202746029U (en) | Highly sealed aluminum piston with oil storage circular groove | |
| CN102996241B (en) | Double piston type four-stroke internal combustion engine | |
| CN215370035U (en) | Straight-line multi-cylinder two-stroke direct injection engine | |
| CN102588105B (en) | Negative pressure type engine and working cycle process thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |