CN112780437A - Novel cross head type two-stroke direct-current scavenging piston device - Google Patents
Novel cross head type two-stroke direct-current scavenging piston device Download PDFInfo
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- CN112780437A CN112780437A CN202110068634.0A CN202110068634A CN112780437A CN 112780437 A CN112780437 A CN 112780437A CN 202110068634 A CN202110068634 A CN 202110068634A CN 112780437 A CN112780437 A CN 112780437A
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- 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
- F02F3/24—Pistons having means for guiding gases in cylinders, e.g. for guiding scavenging charge in two-stroke engines
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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
- F02B25/02—Engines characterised by using fresh charge for scavenging cylinders using unidirectional scavenging
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- 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
- F02F3/0015—Multi-part pistons
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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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- 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 provides a novel crosshead type two-stroke direct-current scavenging piston device which is characterized by comprising a cylinder, a scavenging piston, an air inlet valve and a piston rod, wherein the cylinder comprises a cylinder sleeve and a cylinder head detachably connected with the cylinder sleeve, the scavenging piston is composed of a detachable piston head and a piston seat ring, the air inlet valve is positioned in the scavenging piston and detachably connected with one end of the piston rod, the piston rod sequentially penetrates through the piston seat ring and an air seal box and is connected with a crosshead in a crank case at the other end, the air seal box is installed in a partition plate on the upper wall of the crank case, the top center of the piston head is provided with the scavenging port, and the air inlet valve is matched with the scavenging port and is opened and closed through the movement of the piston rod. The scavenging piston device can improve the combustion efficiency and the air exchange quality, and is convenient and reliable to maintain.
Description
Technical Field
The invention relates to the field of diesel engines, in particular to a piston of a crosshead type two-stroke diesel engine.
Background
Compared with a four-stroke diesel engine, the two-stroke diesel engine has the advantages of high efficiency, high power, reliable work, long service life, combustible inferior fuel oil and the like, but has the problems of insufficient combustion, serious thermal load and the like, and the important reason for the problem is poor ventilation quality, which is one of bottlenecks restricting the development of the diesel engines. The air exchange modes of the existing two-stroke diesel engine comprise a curved flow air exchange mode and a straight flow air exchange mode, wherein the curved flow air exchange mode has the problems of poor air exchange quality, uneven heating of a cylinder, easy deformation and the like, and the straight flow air exchange mode overcomes the defects and is the main air exchange mode of the large diesel engine for the modern ships.
As shown in fig. 1, a conventional uniflow scavenging system has scavenging holes formed in the lower circumferential surface of a cylinder liner, and a scavenging path is: the air enters the cylinder in an approximate tangential direction at a certain elevation angle, the air inlet is changed from the horizontal direction to the vertical direction, the speed loss is large, the air which rotates and rises has a long path before reaching an exhaust port (blows and exhausts the waste gas), the air forms swirling flow on each cross section, a swirling flow center is formed in the middle of the combustion chamber, the waste gas has small density and large viscosity compared with the air, the waste gas is easy to accumulate in a central area of the swirling flow, a valve crown of the exhaust valve is arranged above the area, the diameter of the valve crown is 0.32-0.5 times of the diameter of the cylinder sleeve through conventional design, and the smooth exhaust of the waste gas is blocked by the valve crown. The size of a central area depends on the scavenging speed and the air density, the higher the speed, the higher the density, the larger the diameter of a central waste gas area, the exhaust quality is influenced, meanwhile, the higher the scavenging speed, the more the air entering a cylinder is close to the inner wall of the cylinder to flow upwards, so that the inner wall of the cylinder is washed, a chamber wall chilling effect is formed, the lower the temperature of the cylinder wall is caused, and the combustion efficiency is influenced.
Disclosure of Invention
In view of the above, the novel crosshead type two-stroke straight-flow scavenging piston device provided by the present invention can at least partially solve the problems existing in the prior art, and in order to achieve the above purpose, the technical scheme adopted by the present invention is as follows:
the utility model provides a novel crosshead type two-stroke direct current scavenging piston device, a serial communication port, including the cylinder, the scavenging piston, admission valve and piston rod, the cylinder includes cylinder jacket and cylinder jacket releasable connection's cylinder head, the scavenging piston comprises detachable piston head and piston seat circle jointly, and the admission valve is located inside the scavenging piston and with the one end releasable connection of piston rod, the piston rod passes piston seat circle and air-seal box in proper order and the cross head connection in the other end and crankcase, and the air-seal box is installed in the baffle of crankcase upper wall, the top central authorities of piston head are equipped with the scavenging mouth, the admission valve matches with the scavenging mouth and realizes opening and closing of admission valve through the motion of piston rod.
Furthermore, the piston seat ring comprises an outer ring and an inner ring, the inner ring is longer than the outer ring in axial length, so that the piston seat ring is integrally in a circular truncated cone shape on a section passing through an axis, the axial length of the inner ring is longer so as to guide the piston rod, the piston seat ring and the piston head are fastened through end face screws, and the whole formed by the piston head and the piston seat ring is matched with the cylinder sleeve.
Furthermore, the inner cavity of the piston head is provided with a first air guide blade, a second air guide blade is arranged between the outer ring and the inner ring of the piston seat ring, and the corresponding blades of the first air guide blade and the second air guide blade are coplanar when the piston head and the piston seat ring are fastened.
Furthermore, the second air guide blades extend from the outer ring to the inner ring and are uniformly distributed along the circumference, and the second air guide blades are tangent to the outer wall of the inner ring.
Furthermore, the first air guide blade extends in the radial direction for a smaller distance than the second air guide blade so as to ensure that a certain radial clearance is formed between the first air guide blade and the air inlet valve and prevent the air inlet valve from interfering with the first air guide blade when the air inlet valve moves up and down.
Preferably, the number of the first wind guide blades and the number of the second wind guide blades are both 8.
Furthermore, a buffer ring is arranged between the piston seat ring and the air seal box, the lower surface of the buffer ring is in contact with the upper surface of the air seal box, the piston rod penetrates through a middle through hole of the buffer ring, and the upper ring and the lower ring can rotate (pulsate) relatively structurally besides relieving the descending impact force of the piston, so that the upper ring and the lower ring can deflect and grind the contact surface of the valve port in a small range when the piston is seated, and the valve grinding device has the function of grinding the valve port.
Preferably, the diameter of the scavenging port accounts for 45% -55% of the outer diameter of the piston head, and the matching surface of the scavenging port and the air inlet valve is a conical surface, so that the air inlet valve can be closed better, and the impact of the air inlet valve on the piston head is reduced.
Furthermore, the upper surface of the air inlet valve is set to be a curved surface protruding upwards, a fine tooth threaded hole formed in the lower surface of the air inlet valve is fastened with the head of the piston rod, an air vent communicated with the fine tooth threaded hole is formed in the side surface of the air inlet valve, the air inlet valve is convenient to exhaust when being installed with the piston rod, so that connection is more fastened, and a threaded hole convenient to install is further formed in the upper surface of the air inlet valve.
Furthermore, the outer wall of the piston head and the outer ring outer wall of the piston seat ring are also provided with antifriction rings.
Compared with the prior art, the invention has the following obvious advantages:
1. fresh air forms the vortex via the wind-guiding blade and gets into the cylinder from the scavenging port, rotatory upward movement, and the vortex outwards expands under the centrifugal force effect simultaneously, and the air that gets into the cylinder does not directly erode the cylinder inner wall, can avoid "chamber wall chilling effect", improves combustion efficiency, and the ascending minute speed of gas flow direction is great in addition, is favorable to shortening the scavenging route, improves the quality of taking a breath.
2. The lower part of the cylinder sleeve is not provided with the scavenging hole, the top plate of the scavenging box can be lowered, and the height of the scavenging box is reduced. Therefore, the cooling water cavity of the cylinder sleeve can extend downwards, the cooling effect of the cylinder sleeve is improved, and the problem of ring breakage caused by scraping and rubbing of the scavenging holes by the piston ring is solved because the scavenging hole structure is cancelled in the cylinder sleeve.
3. In the scavenging process, only the valve rod moves downwards, and the piston stroke is shortened to be approximate to the height of the scavenging hole, so that the cylinder sleeve can be shortened in an equivalent manner, and the height of the engine body can be correspondingly reduced.
4. The scavenging time length can be changed by synchronously changing the height of the inner ring of the seat ring and the thickness of the buffer ring, namely, the excess air coefficient and the compression ratio are changed.
5. The installation easy maintenance can be assembled the scavenging piston subassembly earlier, then wholly hangs the assembly of packing into in the cylinder, when changing piston ring or admission valve, only needs to twist off admission valve from the piston rod, can hang out piston head, piston seat circle and admission valve subassembly from the cylinder liner, need not dismantle annexes such as piston rod and air-tight box, also need not open the crankcase, has improved working strength greatly.
Drawings
FIG. 1 is a schematic structural diagram of a conventional uniflow scavenging system;
FIG. 2 is a schematic structural view of a uniflow scavenging piston device according to the present invention (with the intake valve closed and the air guide vane omitted);
FIG. 3 is a schematic structural view of a uniflow scavenging piston device according to the present invention (the intake valve is open and the air guide vane is omitted);
FIG. 4 is a schematic view of the construction of the piston head;
FIG. 5 is a schematic illustration of a piston race configuration;
FIG. 6 is a schematic illustration of the assembled piston head and piston race;
FIG. 7 is a cross-sectional view of an intake valve;
FIG. 8 is an enlarged partial view of the location I of FIG. 2;
fig. 9 is a diagram illustrating a comparison between a new structure and an old structure.
Reference numerals: 1. the air cylinder comprises an air cylinder body, 1.1, an air cylinder sleeve, 2, a scavenging piston, 2.1.1, a scavenging port, 2.1.2, a first air guide blade, 2.2, a piston seat ring, 2.2.1, an outer ring, 2.2.2, an inner ring, 2.2.3, a second air guide blade, 3, an air inlet valve, 3.1, a fine thread hole, 3.2, an air vent, 3.3, a thread hole, 4, a piston rod, 5, an air seal box, 6, a buffer ring, 7, a piston ring, 8, a cooling water cavity, 9 and a scavenging box.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments of the present invention may be arbitrarily combined with each other without conflict.
As shown in fig. 2-8, a novel crosshead type two-stroke straight-flow scavenging piston device is characterized by comprising a cylinder 1, a scavenging piston 2, an air inlet valve 3 and a piston rod 4, wherein the cylinder 1 comprises a cylinder sleeve 1.1 and a cylinder head (not shown in the figure) detachably connected with the cylinder sleeve, the scavenging piston 2 is jointly composed of a detachable piston head 2.1 and a piston seat ring 2.2, the air inlet valve 3 is positioned inside the scavenging piston 2 and detachably connected with one end of the piston rod 4, the piston rod 4 sequentially passes through the piston seat ring 2.2 and an air seal box 5 and is connected with the crosshead inside the crankcase at the other end, the air seal box 5 is installed in a partition plate on the upper wall of the crankcase, the top center of the piston head 2.1 is provided with a scavenging port 2.1.1, and the air inlet valve 3 is matched with the scavenging port 2.1.1 and is opened and closed through the movement of the.
Furthermore, the piston seat ring 2.2 comprises an outer ring 2.2.1 and an inner ring 2.2.2, the inner ring 2.2.2 is longer than the outer ring 2.2.1 in axial length, so that the piston seat ring 2.2 is integrally in a truncated cone shape on a section passing through an axis, the axial length of the inner ring 2.2.2 is longer for guiding the piston rod 4, the piston seat ring 2.2 and the piston head 2.1 are fastened through end face screws, and the whole formed by the piston head 2.1 and the piston seat ring 2.2 is matched with the cylinder sleeve 1.1.
Furthermore, a first air guide blade 2.1.2 is arranged in the inner cavity of the piston head 2.1, a second air guide blade 2.2.3 is further arranged between the outer ring 2.2.1 and the inner ring 2.2.2 of the piston seat ring 2.2, and corresponding blades of the first air guide blade 2.1.2 and the second air guide blade 2.2.3 are coplanar when the piston head 2.1 and the piston seat ring 2.2 are fastened.
Furthermore, the second wind guiding blades 2.2.3 extend from the outer ring 2.2.1 to the inner ring 2.2.2 and are uniformly distributed along the circumference, and the second wind guiding blades 2.2.3 are tangent to the outer wall of the inner ring.
Furthermore, the first air guiding blade 2.1.2 extends in the radial direction by a smaller distance than the second air guiding blade 2.2.3, so as to ensure that a certain radial clearance is formed between the first air guiding blade and the air inlet valve 3, and the clearance is 1.5-3mm, so that the air inlet valve 3 is prevented from interfering with the first air guiding blade 2.1.2 when moving up and down.
Preferably, the number of the first wind guiding blades 2.1.2 and the number of the second wind guiding blades 2.2.3 are both 8.
Furthermore, a buffer ring 6 is arranged between the piston seat ring 2.2 and the air seal box 5, the lower surface of the buffer ring 6 is in contact with the upper surface of the air seal box 5, the piston rod 4 penetrates through a middle through hole of the buffer ring 6, and the upper ring and the lower ring can rotate (pulsate) relatively in structure besides relieving the downward impact force of the piston, so that the valve port contact surface can be slightly deflected and ground when the piston is seated, and the valve grinding device has the function of grinding a valve port.
Preferably, the diameter of the scavenging port 2.1.1 accounts for 45% -55% of the outer diameter of the piston head 2.1, and the matching surface of the scavenging port 2.1.1 and the intake valve 3 is a conical surface, so that the intake valve 3 can be closed better, and the impact of the intake valve 3 on the piston head 2.1 can be reduced.
Furthermore, the upper surface of the air inlet valve 3 is set to be a curved surface protruding upwards, the fine thread hole 3.1 formed in the lower surface is fastened with the head of the piston rod 4, the side surface of the air inlet valve 3 is provided with a vent hole 3.2 communicated with the fine thread hole 3.1, exhaust is facilitated when the air inlet valve is installed on the piston rod 4, connection is more fastened, and the threaded hole 3.3 facilitating installation is further formed in the upper surface of the air inlet valve 3.
Preferably, the outer wall of the piston head 2.1 and the outer wall of the outer ring 2.2.1 of the piston seat ring 2.2 are also provided with wear reducing rings.
The specific working principle of the scavenging piston device of the invention is as follows:
firstly, the piston rod 4 and the air inlet valve 3 move upwards, the air inlet valve 3 is gradually closed, the air inlet valve 3 is completely closed after the air inlet valve 3 is contacted with the piston head 2.1, the piston rod 4, the air inlet valve 3 and the scavenging piston 2 integrally continue to move upwards, air is compressed until the top dead center position is subjected to oil injection, ignition and combustion, high-temperature and high-pressure gas pushes the scavenging piston 2, the air inlet valve 3 and the piston rod 4 integrally to move downwards along the cylinder sleeve 1.1 to start doing work, the air inlet valve 3 is in a closed state at the moment, the scavenging piston 2 is contacted with the buffer ring 6 to stop, the air inlet valve 3 and the piston rod 4 continue to move downwards, the air inlet valve 3 is opened, air passes through the scavenging port 2.1.1 through the air guide vane to enter the cylinder, scavenging is started, the scavenging is carried out until the air.
Fig. 9 shows a comparison of the old and new structures, and the present invention has the following obvious advantages over the prior art:
1. fresh air forms the vortex via the wind-guiding blade and gets into the cylinder from the scavenging port, rotatory upward movement, and the vortex outwards expands under the centrifugal force effect simultaneously, and the air that gets into the cylinder does not directly erode the cylinder inner wall, can avoid "chamber wall chilling effect", improves combustion efficiency, and the ascending minute speed of gas flow direction is great in addition, is favorable to shortening the scavenging route, improves the quality of taking a breath.
2. The lower part of the cylinder sleeve is not provided with a scavenging hole, the top plate of the scavenging box can be lowered, and the height of the scavenging box 9 is reduced. Therefore, the cylinder sleeve cooling water cavity 8 can extend downwards, the cooling effect of the cylinder sleeve is improved, and the problem of ring breakage caused by scraping and rubbing of the scavenging holes by the piston ring 7 is solved because the scavenging hole structure is cancelled by the cylinder sleeve.
3. In the scavenging process, only the valve rod moves downwards, and the piston stroke is shortened to be approximate to the height of the scavenging hole, so that the cylinder sleeve can be shortened in an equivalent manner, and the height of the engine body can be correspondingly reduced.
4. The scavenging time length can be changed by synchronously changing the height of the inner ring of the seat ring and the thickness of the buffer ring, namely, the excess air coefficient and the compression ratio are changed.
5. The installation easy maintenance can be assembled the scavenging piston subassembly earlier, then wholly hangs the assembly of packing into in the cylinder, when changing piston ring or admission valve, only needs to twist off admission valve from the piston rod, can hang out piston head, piston seat circle and admission valve subassembly from the cylinder liner, need not dismantle annexes such as piston rod and air-tight box, also need not open the crankcase, has improved working strength greatly.
Although the embodiments of the present invention have been described above, the contents are only embodiments adopted to facilitate understanding of the present invention, and are not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A novel crosshead type two-stroke direct-flow scavenging piston device is characterized by comprising a cylinder (1), a scavenging piston (2), an air inlet valve (3) and a piston rod (4), the cylinder (1) comprises a cylinder sleeve (1.1) and a cylinder head detachably connected with the cylinder sleeve, the scavenging piston (2) is composed of a detachable piston head (2.1) and a piston seat ring (2.2) together, an air inlet valve (3) is positioned inside the scavenging piston (2) and detachably connected with one end of a piston rod (4), the piston rod (4) sequentially passes through the piston seat ring (2.2) and an air seal box (5) and is connected with a crosshead in a crank case at the other end, the air seal box (5) is arranged in a partition plate on the upper wall of the crank case, the air intake valve is characterized in that a scavenging port (2.1.1) is arranged in the center of the top of the piston head (2.1), and the air intake valve (3) is matched with the scavenging port (2.1.1) and is opened and closed through the movement of the piston rod (4).
2. A novel crosshead type two-stroke straight-flow scavenging piston device according to claim 1, characterized in that the piston race (2.2) includes an outer ring (2.2.1) and an inner ring (2.2.2), the inner ring (2.2.2) is longer than the outer ring (2.2.1) in axial length, so that the piston race (2.2) is in a truncated cone shape as a whole in a section passing through the axis, the piston race (2.2) and the piston head (2.1) are fastened by end face screws, and the whole formed by the piston head (2.1) and the piston race (2.2) is matched with the cylinder sleeve (1.1).
3. A novel crosshead type two-stroke straight-flow scavenging piston device according to claim 2, wherein the inner cavity of the piston head (2.1) is provided with a first wind guiding blade (2.1.2), a second wind guiding blade (2.2.3) is further arranged between the outer ring (2.2.1) and the inner ring (2.2.2) of the piston seat ring (2.2), and corresponding blades of the first wind guiding blade (2.1.2) and the second wind guiding blade (2.2.3) are coplanar when the piston head (2.1) and the piston seat ring (2.2) are fastened.
4. A novel crosshead type two-stroke uniflow scavenging piston device according to claim 3, characterized in that the second air guide vanes (2.2.3) extend from the outer ring (2.2.1) to the inner ring (2.2.2) and are uniformly distributed along the circumference, and the second air guide vanes (2.2.3) are tangential to the outer wall of the inner ring.
5. A novel crosshead type two-stroke straight-flow scavenging piston device as claimed in claim 3, wherein the first air guide vane (2.1.2) extends in a radial direction for a smaller distance than the second air guide vane (2.2.3) to ensure a certain radial clearance with the air intake valve (3) and prevent the air intake valve (3) from interfering with the first air guide vane (2.1.2) when moving up and down.
6. A novel crosshead type two-stroke straight-flow scavenging piston device according to claim 3, wherein the number of the first wind guide vanes (2.1.2) and the number of the second wind guide vanes (2.2.3) are 8.
7. A novel crosshead type two-stroke straight-flow scavenging piston device according to claim 1, characterized in that a buffer ring (6) is further arranged between the piston seat ring (2.2) and the air seal box (5), the lower surface of the buffer ring (6) is in contact with the upper surface of the air seal box (5), and the piston rod (4) passes through a middle through hole of the buffer ring (6).
8. A novel crosshead type two-stroke straight-flow scavenging piston device according to claim 1, characterized in that the diameter of the scavenging port (2.1.1) accounts for 45% -55% of the outer diameter of the piston head (2.1), and the matching surfaces of the scavenging port (2.1.1) and the intake valve (3) are conical surfaces.
9. A novel crosshead type two-stroke straight-flow scavenging piston device as claimed in claim 1, characterized in that the upper surface of the air inlet valve (3) is arranged as a convex curved surface and is fastened with the head of the piston rod (4) through a fine threaded hole (3.1) formed in the lower surface, the side surface of the air inlet valve (3) is provided with a vent hole (3.2) communicated with the fine threaded hole (3.1), and the upper surface of the air inlet valve (3) is further provided with a threaded hole (3.3) convenient for installation.
10. A new crosshead two-stroke uniflow scavenging piston device according to claim 2, characterised in that the outer walls of the piston head (2.1) and the outer wall of the outer ring (2.2.1) of the piston ring (2.2) are also provided with wear reducing rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110068634.0A CN112780437A (en) | 2021-01-19 | 2021-01-19 | Novel cross head type two-stroke direct-current scavenging piston device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110068634.0A CN112780437A (en) | 2021-01-19 | 2021-01-19 | Novel cross head type two-stroke direct-current scavenging piston device |
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|---|---|
| CN112780437A true CN112780437A (en) | 2021-05-11 |
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|---|---|---|---|
| CN202110068634.0A Pending CN112780437A (en) | 2021-01-19 | 2021-01-19 | Novel cross head type two-stroke direct-current scavenging piston device |
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| CN (1) | CN112780437A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112792566A (en) * | 2021-01-19 | 2021-05-14 | 山东交通学院 | Assembling method of novel crosshead type two-stroke direct-current scavenging piston device |
| CN114542316A (en) * | 2022-03-09 | 2022-05-27 | 广西玉柴机器股份有限公司 | Cylinder sleeve structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6165013A (en) * | 1984-09-06 | 1986-04-03 | Mitsubishi Heavy Ind Ltd | Two-cycle diesel engine |
| RU2027877C1 (en) * | 1992-07-02 | 1995-01-27 | Владимир Борисович Хохлов | Internal combustion engine |
| CN102691565A (en) * | 2011-03-23 | 2012-09-26 | 瓦锡兰瑞士公司 | Cylinder assembly and piston for a longitudinally flushed stroke piston combustion engine |
-
2021
- 2021-01-19 CN CN202110068634.0A patent/CN112780437A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6165013A (en) * | 1984-09-06 | 1986-04-03 | Mitsubishi Heavy Ind Ltd | Two-cycle diesel engine |
| RU2027877C1 (en) * | 1992-07-02 | 1995-01-27 | Владимир Борисович Хохлов | Internal combustion engine |
| CN102691565A (en) * | 2011-03-23 | 2012-09-26 | 瓦锡兰瑞士公司 | Cylinder assembly and piston for a longitudinally flushed stroke piston combustion engine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112792566A (en) * | 2021-01-19 | 2021-05-14 | 山东交通学院 | Assembling method of novel crosshead type two-stroke direct-current scavenging piston device |
| CN112792566B (en) * | 2021-01-19 | 2022-02-18 | 山东交通学院 | Assembling method of novel crosshead type two-stroke direct-current scavenging piston device |
| CN114542316A (en) * | 2022-03-09 | 2022-05-27 | 广西玉柴机器股份有限公司 | Cylinder sleeve structure |
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