CN212154936U - Two-stroke low-speed diesel engine scavenging direction adjustable device - Google Patents
Two-stroke low-speed diesel engine scavenging direction adjustable device Download PDFInfo
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- CN212154936U CN212154936U CN202020981239.2U CN202020981239U CN212154936U CN 212154936 U CN212154936 U CN 212154936U CN 202020981239 U CN202020981239 U CN 202020981239U CN 212154936 U CN212154936 U CN 212154936U
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- speed diesel
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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
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Abstract
The utility model discloses a two-stroke low-speed diesel engine scavenging direction adjustable device, two-stroke low-speed diesel engine intake through a plurality of scavenging ports of seting up bottom the cylinder jacket, include: the flow guide mechanisms are arranged in the scavenging ports correspondingly; the rotating disc mounting guide rail is sleeved on the outer circumference of the cylinder sleeve; the rotating disc is movably arranged on the rotating disc installation guide rail and can rotate on the rotating disc installation guide rail, the rotating disc is connected with each flow guide mechanism, the rotating disc rotates to drive the flow guide mechanisms to rotate by corresponding angles in the scavenging ports, and the air inlet inclination angles of the scavenging ports are adjusted. The utility model discloses can realize the regulation to vortex intensity and scavenging efficiency at the scavenging in-process, satisfy the demand of diesel engine performance optimization under the different operating condition.
Description
Technical Field
The utility model relates to a two-stroke low-speed diesel engine scavenging control field, in particular to two-stroke low-speed diesel engine scavenging direction adjustable device.
Background
The energy of a reciprocating internal combustion engine is derived from the combustion process of a fuel and air mixture, wherein the quality of the organization of the fuel and air mixture is an important factor influencing the combustion efficiency of the internal combustion engine and the formation of pollutants. In the design process of various types of reciprocating internal combustion engines, the mixing process of fuel and air is often promoted by organizing swirl and tumble during intake and compression. Two-stroke low-speed diesel engines are a type of reciprocating internal combustion engine that is widely used as the primary power plant for large ships. The two-stroke low-speed diesel engine generally uses a plurality of scavenging ports arranged at the bottom of a cylinder sleeve for air intake, and in order to organize vortex and promote mixing, the scavenging ports are uniformly arranged along the circumferential direction of the cylinder sleeve and are inclined at a certain angle along the circumferential direction.
The change of the circumferential inclination angle of the scavenging port can cause the parameters such as the strength of vortex, scavenging efficiency and the like to change, thereby having important influence on the performance of the two-stroke low-speed diesel engine. In the working process of the two-stroke low-speed diesel engine, due to the difference of air inflow and oil injection quantity under different rotating speeds and loads, parameters such as vortex strength, scavenging efficiency and the like are often required to be different in order to achieve optimal performance, and therefore the circumferential inclination angle of the scavenging port is required to be changed according to the difference of the rotating speed and the load of the diesel engine.
However, the scavenging port in the prior art is fixed on the cylinder sleeve, once the scavenging port is machined, the circumferential inclination angle of the scavenging port is also fixed, and the scavenging port cannot be correspondingly adjusted according to actual working conditions, so that the performance of the two-stroke low-speed diesel engine is further improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a two-stroke low-speed diesel engine scavenging direction adjustable device to the realization is to the regulation of vortex intensity and scavenging efficiency at the scavenging in-process, satisfies the demand of diesel engine performance optimization under the different operating condition.
In order to achieve the above purpose, the utility model discloses a realize through following technical scheme:
the utility model provides a two-stroke low-speed diesel engine scavenging direction adjustable device, two-stroke low-speed diesel engine intake through a plurality of scavenging ports that cylinder jacket bottom was seted up, its characteristics include:
the flow guide mechanisms are arranged in the scavenging ports correspondingly;
the rotating disc mounting guide rail is sleeved on the outer circumference of the cylinder sleeve;
the rotating disc is movably arranged on the rotating disc installation guide rail and can rotate on the rotating disc installation guide rail, the rotating disc is connected with each flow guide mechanism, the rotating disc rotates to drive the flow guide mechanisms to rotate by corresponding angles in the scavenging ports, and the air inlet inclination angles of the scavenging ports are adjusted.
Furthermore, the circumference of the rotating disc is uniformly provided with rectangular slotted holes with the same number as the flow guide mechanisms, the inner side of the rotating disc is provided with an inner slide way, the outer circumference of the rotating disc is provided with a rotating disc convex tooth arc, the rotating disc convex tooth arc is of a section of arc-shaped structure, and the outer side of the rotating disc convex tooth arc is provided with a tooth-shaped structure.
Further, the flow guide mechanism comprises:
the flow guide body is of a metal thin-wall annular structure, and the top and the bottom of the flow guide body are respectively provided with a rotating shaft;
the extending brim is arranged at the end part of the flow guide body, and the extending direction is parallel to the axial direction of the flow guide body;
and one end of the adjusting claw is fixed on the extending brim, and the other end of the adjusting claw is movably placed in the rectangular slot of the rotating disc.
Furthermore, the upper part and the lower part of the rotating shaft are positioned on the same axis and are arranged at one end, close to the inner wall of the cylinder, of the scavenging port, so that the main body part of the flow guide body is positioned in the scavenging port.
Furthermore, the areas on the two sides of the rotating shaft on the flow guide body are cut into circular arcs.
Furthermore, the rotating disc installation guide rail comprises two semicircular discs, an outer slide way is arranged on the outer side of the circumference of the rotating disc installation guide rail, and the two semicircular discs are connected into a whole and clamped on the outer circumference of the cylinder sleeve.
Furthermore, the outer slide way extends into the inner slide way of the rotating disc and is matched with the inner slide way, so that the rotating disc can rotate on the rotating disc installation guide rail.
Further, still include a motor system, it includes motor body, center pin and swing pinion, motor body set up in the cylinder jacket outside, rotate swing pinion through the center pin, swing pinion and the mutual meshing of profile of tooth structure on the rolling disc dogtooth circular arc.
Compared with the prior art, the utility model, have following advantage:
the air-scavenging direction can be flexibly adjusted by installing the flow guide device in the existing air-scavenging port structure, the requirements on the vortex strength and the air-scavenging efficiency of the two-stroke low-speed diesel engine under different loads can be met, the combustion efficiency of the diesel engine can be favorably improved, and the exhaust emission can be reduced. The device of the utility model is simple in structure, the operation is reliable, but wide application in present two-stroke low-speed diesel engine has fine popularization and application and worth.
Drawings
Fig. 1 is a schematic structural diagram of the scavenging direction adjustable device of the two-stroke low-speed diesel engine of the present invention.
Fig. 2 is a schematic view of the flow guiding mechanism of the present invention.
Fig. 3 is a schematic view of the structure of the rotating disc of the present invention.
Fig. 4 is a schematic view of the structure of the rotating disc mounting guide rail of the present invention.
Fig. 5 is a schematic structural view of the convex tooth arc of the rotating disk and the motor system of the present invention.
Fig. 6 is a schematic diagram of the adjustment range of the scavenging direction of the present invention.
Detailed Description
The present invention will be further described by the following detailed description of a preferred embodiment thereof, taken in conjunction with the accompanying drawings.
As shown in fig. 1, the utility model provides a two-stroke low-speed diesel engine scavenging direction adjustable device, include: the air-sweeping device comprises a flow guide mechanism 1, a rotating disc 2, a rotating disc installation guide rail 3, a rotating disc convex tooth arc 4 and a motor system 5, wherein the rotating disc 2 is movably arranged on the rotating disc installation guide rail 3 and can rotate in the rotating disc installation guide rail 3, the rotating disc 2 is connected to each flow guide mechanism 1, the rotating disc 2 rotates to drive the flow guide mechanisms to rotate by a corresponding angle in air sweeping ports, and the air inlet inclination angle of the air sweeping ports 6 is adjusted.
As shown in fig. 2, the diversion mechanism 1 includes a diversion body 100, which is a metal thin-wall ring structure, and a rotation shaft 8 is respectively disposed on the top and the bottom of the diversion body; and the extending brim 9 is arranged at the end part of the flow guide body, the extending direction of the extending brim is parallel to the axial direction of the flow guide body, and the extending brim is connected to the rotating disc 2 through the adjusting claw 10.
The diversion body 100 is installed inside the scavenging port 6 through the rotating shaft 8, can rotate a certain angle left and right inside the scavenging port 6 along the rotating shaft 8, and in the rotating process, in order to prevent the diversion mechanism 1 from entering the cylinder sleeve 7, the diversion body 100 on two sides of the rotating shaft 8 is cut into arc shapes 101. The upper and lower parts of the rotating shaft 8 are on the same axis and are installed at one end of the scavenging port 6 close to the inner wall of the cylinder, so that the main part of the flow guiding body 100 is located inside the scavenging port 6.
The rotating disc 2 is composed of two semicircular discs, as shown in fig. 3, the two semicircular discs are connected into a whole by bolts after being matched through lug bosses and grooves, rectangular slotted holes 11 with the same number as the diversion mechanisms are evenly arranged on the circumference of the rotating disc, and inner slideways 12 are arranged on the inner side of the rotating disc. The rectangular slotted hole 11 is provided with a counter bore instead of a through hole, the width of the stress claw 10 used for installing the flow guide mechanism is slightly larger than the diameter of the stress claw 10, and the stress claw 10 can slide in the rectangular slotted hole 11 along the length direction and cannot shake back and forth along the width direction of the rectangular slotted hole 11. The rectangular slot 11 may be arranged on the circumference of the rotating disc in a manner that the center line passes through the center of the rotating disc as shown in fig. 3, or in an oblique manner that the center line forms a certain angle with the connecting line of the rectangular slot 11 and the center of the rotating disc.
The above-mentioned turning disc mounting rail 3 is constituted by two semicircular discs, which are connected into a whole by bolts and clamped on the outer circumference of the cylinder liner 7 as shown in fig. 4, and an outer slide 13 is provided on the outer side of the circumference thereof. The outer slide 13 extends into and cooperates with the inner slide 12 of the turn disc to rotate the turn disc 2 on the turn disc mounting rail 3.
The convex tooth circular arc 4 of the rotating disc is of a section of circular arc structure, the inner side of the convex tooth circular arc is matched with the excircle of the rotating disc 2, the convex tooth circular arc is fixed on the outer circumference of the rotating disc 2 through a bolt hole 14, and the outer side of the convex tooth circular arc is provided with a tooth-shaped structure 15.
The above-mentioned motor system 5 is fixed to the outer wall of the cylinder liner 7, and as shown in fig. 5, it includes a motor body 16, a central shaft 17, and a rotary gear 18. The rotary gear 18 is fixed on the central shaft 17 and is meshed with the tooth-shaped structure 15 on the convex tooth arc of the rotary disc.
The utility model provides a pair of two-stroke low-speed diesel engine scavenging direction adjustable device, its working process is: the motor body 16 drives the rotating gear 18 to rotate clockwise or anticlockwise through the central shaft 17, the rotating disc 2 rotates anticlockwise or clockwise by a certain angle under the drive of the rotating gear 18, the rotating disc 2 rotates to drive the diversion mechanism 1 to rotate, the inclination angle of the scavenging port is further reduced or increased, and the scavenging direction is adjusted, as shown in fig. 6
To sum up, the utility model relates to a two-stroke low-speed diesel engine scavenging direction adjustable device to the realization is to the regulation of vortex intensity and scavenging efficiency at the scavenging in-process, satisfies the demand of diesel engine performance optimization under the different operating condition.
The present invention has been described in detail so far with reference to the accompanying drawings. It is to be noted that, in the attached drawings or in the description, the implementation modes not shown or described are all the modes known by the ordinary skilled person in the field of technology, and are not described in detail. In addition, the above definitions of the various elements and methods are not limited to the various specific structures, shapes or modes mentioned in the embodiments, and may be easily modified or substituted by those skilled in the art.
From the above description, those skilled in the art should clearly understand that the scavenging direction adjusting device of the two-stroke low-speed diesel engine of the present invention has the advantages of simple structure, low cost and high efficiency.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned are only specific examples of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present disclosure.
Claims (8)
1. The utility model provides a two-stroke low-speed diesel engine scavenging direction adjustable device, two-stroke low-speed diesel engine a plurality of scavenging ports of seting up through the cylinder jacket bottom admit air, its characterized in that includes:
the flow guide mechanisms are arranged in the scavenging ports correspondingly;
the rotating disc mounting guide rail is sleeved on the outer circumference of the cylinder sleeve;
the rotating disc is movably arranged on the rotating disc installation guide rail and can rotate on the rotating disc installation guide rail, the rotating disc is connected with each flow guide mechanism, the rotating disc rotates to drive the flow guide mechanisms to rotate by corresponding angles in the scavenging ports, and the air inlet inclination angles of the scavenging ports are adjusted.
2. A scavenging direction adjustable device of a two-stroke low-speed diesel engine as claimed in claim 1, characterized in that the circumference of the rotary disk is uniformly provided with rectangular slotted holes with the same number as that of the diversion mechanisms, the inner side of the rotary disk is provided with inner slide ways, the outer circumference is provided with a circular arc of rotary disk convex teeth, the circular arc of the rotary disk convex teeth is a section of circular arc structure, and the outer side of the rotary disk convex teeth is provided with a tooth-shaped structure.
3. A scavenging direction adjustable device for a two-stroke low-speed diesel engine as claimed in claim 1, wherein said flow guide mechanism comprises:
the flow guide body is of a metal thin-wall annular structure, and the top and the bottom of the flow guide body are respectively provided with a rotating shaft;
the extending brim is arranged at the end part of the flow guide body, and the extending direction is parallel to the axial direction of the flow guide body;
and one end of the adjusting claw is fixed on the extending brim, and the other end of the adjusting claw is movably placed in the rectangular slot of the rotating disc.
4. A scavenging direction adjustable device of a two-stroke low-speed diesel engine as claimed in claim 3, characterized in that the upper and lower parts of the rotating shaft are located on the same axis and are installed at one end of the scavenging port close to the inner wall of the cylinder, so that the main body part of the flow guide body is located inside the scavenging port.
5. The device for adjusting the scavenging direction of the two-stroke low-speed diesel engine as claimed in claim 3, wherein the areas of the deflector body on both sides of the rotating shaft are cut into circular arcs.
6. A direction adjustable device for scavenging air of two-stroke low-speed diesel engine as claimed in claim 1, characterized in that said rotating disc mounting rail comprises two half-discs, which are provided with outer slide ways on the outer side of their circumference, and are connected as a whole and clamped on the outer circumference of the cylinder sleeve.
7. A device for adjusting the direction of scavenging of a two-stroke low speed diesel engine as claimed in claim 6 wherein said outer slide extends into and cooperates with said inner slide of said rotatable disk to rotate said rotatable disk on said rotatable disk mounting rail.
8. The device for adjusting the scavenging direction of a two-stroke low-speed diesel engine according to claim 2,
the cylinder sleeve is characterized by further comprising a motor system, wherein the motor system comprises a motor body, a central shaft and a rotary gear, the motor body is arranged outside the cylinder sleeve, the rotary gear is rotated through the central shaft, and the rotary gear is meshed with a tooth-shaped structure on a convex tooth arc of the rotating disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020981239.2U CN212154936U (en) | 2020-06-02 | 2020-06-02 | Two-stroke low-speed diesel engine scavenging direction adjustable device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020981239.2U CN212154936U (en) | 2020-06-02 | 2020-06-02 | Two-stroke low-speed diesel engine scavenging direction adjustable device |
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| CN212154936U true CN212154936U (en) | 2020-12-15 |
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| CN202020981239.2U Active CN212154936U (en) | 2020-06-02 | 2020-06-02 | Two-stroke low-speed diesel engine scavenging direction adjustable device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111485993A (en) * | 2020-06-02 | 2020-08-04 | 上海海事大学 | Two-stroke low-speed diesel engine scavenging direction adjustable device |
| CN112648537A (en) * | 2020-12-31 | 2021-04-13 | 苏州联点数据技术有限公司 | Induction system |
| CN112782248A (en) * | 2020-12-31 | 2021-05-11 | 苏州联点数据技术有限公司 | Sensing system |
| CN112833930A (en) * | 2020-12-31 | 2021-05-25 | 苏州联点数据技术有限公司 | Multifunctional sensing device |
-
2020
- 2020-06-02 CN CN202020981239.2U patent/CN212154936U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111485993A (en) * | 2020-06-02 | 2020-08-04 | 上海海事大学 | Two-stroke low-speed diesel engine scavenging direction adjustable device |
| CN112648537A (en) * | 2020-12-31 | 2021-04-13 | 苏州联点数据技术有限公司 | Induction system |
| CN112782248A (en) * | 2020-12-31 | 2021-05-11 | 苏州联点数据技术有限公司 | Sensing system |
| CN112833930A (en) * | 2020-12-31 | 2021-05-25 | 苏州联点数据技术有限公司 | Multifunctional sensing device |
| CN112833930B (en) * | 2020-12-31 | 2022-10-11 | 陕西拓普索尔电子科技有限责任公司 | Multifunctional sensing device |
| CN112782248B (en) * | 2020-12-31 | 2022-12-13 | 东莞市雍华昊信息技术有限公司 | Sensing system |
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