CN108661817B - Marine two-stroke diesel engine cylinder sleeve with variable scavenging duration - Google Patents
Marine two-stroke diesel engine cylinder sleeve with variable scavenging duration Download PDFInfo
- Publication number
- CN108661817B CN108661817B CN201810440724.6A CN201810440724A CN108661817B CN 108661817 B CN108661817 B CN 108661817B CN 201810440724 A CN201810440724 A CN 201810440724A CN 108661817 B CN108661817 B CN 108661817B
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- gear shaping
- wall
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- cylinder liner
- sleeve
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- 230000002000 scavenging effect Effects 0.000 title claims abstract description 49
- 238000010862 gear shaping Methods 0.000 claims abstract description 64
- 239000003921 oil Substances 0.000 claims description 46
- 238000006073 displacement reaction Methods 0.000 claims description 21
- 239000010720 hydraulic oil Substances 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
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
-
- 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 provides a marine two-stroke diesel engine cylinder sleeve with variable scavenging duration, which comprises a first sub cylinder sleeve and a second sub cylinder sleeve, wherein the first sub cylinder sleeve and the second sub cylinder sleeve are connected in a jogged manner; the first embedded end of the first sub cylinder sleeve is provided with a first annular groove, and the first annular groove comprises a first inner wall sleeve and a first outer wall sleeve; the first inner wall is sleeved with first inner gear shaping teeth; the first outer wall is sleeved with first external gear shaping teeth; a second annular groove is formed in the second embedded end of the second sub cylinder sleeve, and the second annular groove comprises a second inner wall sleeve and a second outer wall sleeve; the second inner wall is sleeved with a second inner gear shaping; the second outer wall is sleeved with second outer gear shaping teeth; the first inner gear shaping is jogged with the second outer gear shaping, and the first outer gear shaping is jogged with the second inner gear shaping, constitutes the scavenging port of cylinder liner. The engine is provided with the second sub cylinder sleeve, the second sub cylinder sleeve is moved up and down, and proper adjustment is made according to the actual working condition so as to change the scavenging duration, so that the engine achieves the power performance, the economy and the emission performance meeting the requirements.
Description
Technical Field
The disclosure relates to the field of marine two-stroke diesel engine cylinder liners, in particular to a marine two-stroke diesel engine cylinder liner with variable scavenging duration.
Background
The lower part of the cylinder sleeve of the marine two-stroke diesel engine is provided with a plurality of scavenging ports along a circle, and a uniflow scavenging mode is mostly adopted. In the downward stroke of the piston, the exhaust valve is opened to exhaust naturally, and as the piston continues to move downward, when the upper edge of the piston, more specifically, the upper edge of the first piston ring passes through the upper end of the scavenging port to enable the scavenging port to be communicated with the interior of the cylinder, the scavenging port is opened, and the moment is the scavenging timing moment, and fresh air enters the cylinder to carry out the processes of scavenging, ventilation and the like. The piston continues to move downwards, the opening area of the scavenging port is gradually increased, and the scavenging port is gradually closed until the piston reaches the bottom dead center and moves upwards after the scavenging port is completely opened.
The scavenging duration directly affects the quality of the ventilation quality and the amount of fresh charge in the cylinder, thereby affecting the power, economy and emissions of the engine. The position of the scavenging port is fixed on the cylinder sleeve, and the size of the scavenging port is also fixed, so that the scavenging duration is also invariable, and the scavenging duration is difficult to properly adjust according to actual conditions, so that the engine achieves the power performance, economy and emission performance meeting the requirements.
Disclosure of Invention
First, the technical problem to be solved
The present disclosure provides a marine two-stroke diesel cylinder liner of variable scavenging duration to at least partially address the technical problems set forth above.
(II) technical scheme
According to one aspect of the present disclosure, there is provided a marine two-stroke diesel cylinder liner of variable scavenging duration comprising: the first sub cylinder sleeve comprises a first fixed end and a first embedded end; the second sub cylinder sleeve comprises a second fixed end and a second embedded end, and the second embedded end of the second sub cylinder sleeve is in embedded connection with the first embedded end of the first sub cylinder sleeve; so as to form a scavenging port of the cylinder sleeve of the marine two-stroke diesel engine; and the power support device is connected with the second fixed end of the second sub cylinder sleeve.
In some embodiments of the present disclosure, a first fitting end of the first sub cylinder liner is provided with a first ring groove, the first ring groove including a first inner wall sleeve and a first outer wall sleeve; the first inner wall is sleeved with first inner gear shaping teeth; the first outer wall is sleeved with first external gear shaping teeth; a second annular groove is formed in the second embedded end of the second sub cylinder sleeve, and the second annular groove comprises a second inner wall sleeve and a second outer wall sleeve; the second inner wall is sleeved with a second inner gear shaping; the second outer wall is sleeved with second outer gear shaping teeth; the first inner gear shaping is engaged with the second outer gear shaping, and the first outer gear shaping is engaged with the second inner gear shaping.
In some embodiments of the present disclosure, a power support device includes: the n hydraulic cylinders are connected with the second fixed end of the second sub cylinder sleeve and are uniformly distributed in the circumferential direction of the second sub cylinder sleeve, wherein n is more than 1; the oil pump is connected with the motor; the oil outlets of the oil pumps are respectively supplied with hydraulic oil to n hydraulic cylinders through n paths of oil paths; the displacement sensor is used for respectively detecting the displacement of each hydraulic cylinder; the proportional reversing valve is respectively connected with the n hydraulic cylinders, and the opening degree of the proportional reversing valve is controlled according to the displacement of each hydraulic cylinder detected by the displacement sensor.
In some embodiments of the present disclosure, the power support device further comprises: the first oil filter is arranged between the oil tank and the oil pump; the second oil filter is arranged behind the oil pump; the one-way valve is arranged between the first oil filter and the oil pump; and the overflow valve is arranged on a branch path between the oil pump and the second oil filter.
In some embodiments of the present disclosure, the first inner gear shaping and the first outer gear shaping are spaced about the axis; the second inner gear shaping and the second outer gear shaping are arranged around the axis at intervals.
In some embodiments of the present disclosure, the contact edges of the first and second outer gear inserts are provided with chamfers.
In some embodiments of the present disclosure, the inside edges of the first and second internal gear inserts are provided with chamfers.
In some embodiments of the present disclosure, the first outer gear shaping, the second outer gear shaping, the first inner gear shaping, and the second inner gear shaping are profiled contact surfaces.
In some embodiments of the present disclosure, the contact surface is a cambered surface having a radius that is less than a distance from a point on the cambered surface to the cylinder liner axis.
(III) beneficial effects
From the technical scheme, the marine two-stroke diesel engine cylinder liner with the variable scavenging duration has at least one or a part of the following beneficial effects:
(1) The structure of the first sub cylinder sleeve and the second sub cylinder sleeve divides the marine two-stroke diesel engine cylinder sleeve into two parts at the scavenging port, and the mutually embedded structure can change the scavenging port height through the relative up-and-down movement of the first sub cylinder sleeve and the second sub cylinder sleeve, thereby changing the scavenging duration.
(2) And the gear shaping structure is beneficial to the jogging between the first sub cylinder sleeve and the second sub cylinder sleeve, and realizes the relatively stable movement between the two parts of the cylinder sleeve.
(3) The power support device drives the second sub cylinder sleeve to move up and down to change the height of the scavenging port, so that the scavenging duration is changed, the scavenging duration can be properly adjusted according to the actual working condition, and the engine achieves the power performance, economy and emission performance meeting the requirements.
(4) The displacement sensor and the proportional reversing valve are arranged, and the opening degree of the proportional reversing valve is controlled according to the displacement amount of each hydraulic cylinder detected by the displacement sensor, so that synchronous action of a plurality of hydraulic cylinders is guaranteed.
(5) And the overflow valve is arranged to prevent the danger of high pressure generation caused by the condition that an oil way is blocked after the pump.
(6) The gear shaping is sheathed in at inner wall cover and outer wall alternately interval arrangement to guarantee that the complete broken area can not appear along circumference in cylinder liner internal surface, and then avoid the piston to take place the problem of card to hinder.
(7) The chamfer angles respectively arranged on the contact edges of the outer wall sleeve can facilitate the embedding and the installation.
(8) The chamfer angles arranged on the inner side edges of the inner wall sleeve can avoid the problem that the piston ring is damaged due to blocking when the piston ring passes through.
(9) The gear shaping contact surface is the abnormal shape contact surface, is favorable to guaranteeing that can not rotate along the axis after two cylinder liners gomphosis, plays the guide effect when two cylinder liners reciprocate relatively simultaneously.
Drawings
Fig. 1 is a schematic diagram of an assembled structure of a marine two-stroke diesel cylinder liner of variable scavenging duration according to an embodiment of the present disclosure.
Fig. 2 is an exploded view of a cylinder liner of a marine two-stroke diesel engine with variable scavenging duration according to an embodiment of the present disclosure.
Fig. 3 is a schematic top view of fig. 2.
Fig. 4 is a schematic cross-sectional view of the section D-D of fig. 3.
FIG. 5 is a schematic cross-sectional structural view of section E-E of FIG. 4.
Fig. 6 is a schematic diagram of the working principle of a hydraulic system in a power support device of a cylinder liner of a marine two-stroke diesel engine with variable scavenging duration according to an embodiment of the disclosure.
[ in the drawings, the main reference numerals of the embodiments of the present disclosure ]
100-cylinder sleeve;
110-first sub cylinder liner;
111-first external gear shaping; 112-first internal gear shaping;
113-a first fixed end; 114-a first chimeric end;
120-a second sub-cylinder liner;
121-a second outer gear shaping; 122-second internal gear shaping;
123-a second fixed end; 124-a second chimeric end;
130-scavenging port;
140-a power support device;
141-a first oil filter; 142-a one-way valve;
143-an oil pump; 144-motor;
145-a second oil filter; 146-overflow valve;
147. 148, 149-proportional reversing valve;
1410. 1411, 1412-hydraulic cylinders;
1413. 1414, 1415-displacement sensors.
Detailed Description
The invention provides a marine two-stroke diesel engine cylinder sleeve with variable scavenging duration, which comprises a first sub cylinder sleeve and a second sub cylinder sleeve, wherein the first sub cylinder sleeve and the second sub cylinder sleeve are connected in a jogged manner; the first embedded end of the first sub cylinder sleeve is provided with a first annular groove, and the first annular groove comprises a first inner wall sleeve and a first outer wall sleeve; the first inner wall is sleeved with first inner gear shaping teeth; the first outer wall is sleeved with first external gear shaping teeth; a second annular groove is formed in the second embedded end of the second sub cylinder sleeve, and the second annular groove comprises a second inner wall sleeve and a second outer wall sleeve; the second inner wall is sleeved with a second inner gear shaping; the second outer wall is sleeved with second outer gear shaping teeth; the first inner gear shaping is jogged with the second outer gear shaping, and the first outer gear shaping is jogged with the second inner gear shaping, constitutes the scavenging port of cylinder liner. The engine is provided with the second sub cylinder sleeve, the second sub cylinder sleeve is moved up and down, and proper adjustment is made according to the actual working condition so as to change the scavenging duration, so that the engine achieves the power performance, the economy and the emission performance meeting the requirements.
For the purposes of promoting an understanding of the principles and advantages of the disclosure, reference will now be made to the embodiments illustrated in the drawings and specific language will be used to describe the same.
Certain embodiments of the present disclosure will now be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments are shown. Indeed, various embodiments of the disclosure may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements.
In one exemplary embodiment of the present disclosure, a marine two-stroke diesel cylinder liner of variable scavenging duration is provided. Fig. 1 is an exploded view of a cylinder liner of a marine two-stroke diesel engine with variable scavenging duration according to an embodiment of the present disclosure. Fig. 2 is a schematic diagram of an assembled structure of a marine two-stroke diesel cylinder liner with variable scavenging duration according to an embodiment of the present disclosure. Fig. 3 is a schematic top view of fig. 2. Fig. 4 is a schematic cross-sectional view of the section D-D of fig. 3. FIG. 5 is a schematic cross-sectional structural view of section E-E of FIG. 4. Fig. 6 is a schematic diagram of the working principle of a hydraulic system in a power support device of a cylinder liner of a marine two-stroke diesel engine with variable scavenging duration according to an embodiment of the disclosure. As shown in fig. 1 to 6, comprising: a first sub cylinder liner 110 and a second sub cylinder liner 120; a first sub cylinder liner 110 including a first fixed end 113 and a first fitting end 114; the first engagement end 114 of the first sub cylinder liner 110 is provided with a first annular groove, the first annular groove includes a first inner wall sleeve provided with a first inner gear shaping 112 and a first outer wall sleeve provided with a first outer gear shaping 111; the second sub cylinder liner 120 includes a second fitting end 124 and a second fixed end 123, the second fitting end 124 of the second sub cylinder liner 120 is connected with the first fitting end 114 of the first sub cylinder liner 110 in a fitting manner, the second fitting end 124 of the second sub cylinder liner 120 is provided with a second ring groove, the second ring groove includes a second inner wall sleeve and a second outer wall sleeve, the second inner wall sleeve is provided with a second inner gear shaping 122, and the second outer wall sleeve is provided with a second outer gear shaping 121. The first inner insert teeth 112 are fitted with the second outer insert teeth 121, and the first outer insert teeth 111 are fitted with the second inner insert teeth 122 to form the scavenging port 130 of the cylinder liner 100. The inner and outer double-layer gear shaping structure is adopted, so that the first sub cylinder sleeve 110 and the second sub cylinder sleeve 120 are embedded, and relatively stable movement between the two parts of the cylinder sleeve is realized. The engine further comprises a power support device 140 which is connected with the second fixed end 123 of the second sub cylinder sleeve 120 to drive the second sub cylinder sleeve 120 to move up and down, so that the scavenging duration can be properly adjusted according to the actual working condition, and the engine can achieve the power performance, economy and emission performance meeting the requirements. The gear shaping is sheathed in at inner wall cover and outer wall alternately interval arrangement to guarantee that the complete broken area can not appear along circumference in cylinder liner internal surface, and then avoid the piston to take place the problem of card to hinder. The chamfer angles respectively arranged on the contact edges of the outer wall sleeve can facilitate the embedding and the installation. The chamfer angles arranged on the inner side edges of the inner wall sleeve can avoid the problem that the piston ring is damaged due to blocking when the piston ring passes through. The gear shaping contact surface can be in various special-shaped contact surface shapes, so that the two cylinder sleeves can not rotate along the axis after being embedded, and simultaneously, the guiding function of the two cylinder sleeves in the up-and-down movement is realized; the shape of the gear shaping contact surface selected here is an arc surface, wherein the radius of the arc surface is smaller than the distance from one point on the arc surface to the axis of the cylinder sleeve.
The power support device 140 provided in a specific embodiment may include: hydraulic cylinder 1410, hydraulic cylinder 1411, hydraulic cylinder 1412, oil pump 143, displacement sensor 1413, displacement sensor 1414, displacement sensor 1415, proportional directional valve 147, proportional directional valve 148, proportional directional valve 149, first oil filter 141, second oil filter 145, check valve 142, and relief valve 146; in this embodiment, 3 hydraulic cylinders are respectively connected to the second fixed end 123 of the second sub cylinder liner 120, and the hydraulic cylinders 1410, 1411 and 1412 are uniformly distributed and connected in the circumferential direction of the second sub cylinder liner 120; the oil pump 143 is driven by a motor 144; the oil outlet of the oil pump 143 supplies hydraulic oil to the hydraulic cylinder 1410, the hydraulic cylinder 1411, and the hydraulic cylinder 1412, respectively, through n-way oil paths; the displacement sensors 1413, 1414, 1415 detect the displacement amounts of the hydraulic cylinders 1410, 1411, 1412 connected thereto, respectively; the proportional reversing valve 147, the proportional reversing valve 148 and the proportional reversing valve 149 are respectively connected with the hydraulic cylinder 1410, the hydraulic cylinder 1411 and the hydraulic cylinder 1412, and the opening degree of the proportional reversing valve is controlled according to the displacement amount of each hydraulic cylinder detected by the displacement sensor 1413, the displacement sensor 1414 and the displacement sensor 1415, so that the synchronous action of a plurality of hydraulic cylinders is ensured; the first oil filter 141 is disposed between the oil tank and the oil pump 143; the second oil filter 145 is provided after the oil pump 143; the check valve 142 is provided between the first oil filter 141 and the oil pump 143; the relief valve 146 is provided in a branch line between the oil pump 143 and the second oil filter 145.
Thus, embodiments of the present disclosure have been described in detail with reference to the accompanying drawings. It should be noted that, in the drawings or the text of the specification, implementations not shown or described are all forms known to those of ordinary skill in the art, and not described in detail. Furthermore, the above definitions of the elements and methods are not limited to the specific structures, shapes or modes mentioned in the embodiments, and may be simply modified or replaced by those of ordinary skill in the art.
From the foregoing description, it should be apparent to those skilled in the art that the present disclosure provides a marine two-stroke diesel cylinder liner of variable scavenging duration.
In summary, the present disclosure provides a marine two-stroke diesel engine cylinder liner with variable scavenging duration, dividing the existing marine two-stroke diesel engine cylinder liner into two parts at the scavenging port, which are a first sub cylinder liner and a second sub cylinder liner, implementing the jogging by the inner and outer double-sided gear shaping structure, driving the second sub cylinder liner to move up and down by the power supporting device, making the scavenging duration appropriately adjustable according to the actual working condition, and making the engine achieve the power performance, economy and emission meeting the requirements.
It should be further noted that, the directional terms mentioned in the embodiments, such as "upper", "lower", "front", "rear", "left", "right", etc., are only referring to the directions of the drawings, and are not intended to limit the scope of the present disclosure. Like elements are denoted by like or similar reference numerals throughout the drawings. Conventional structures or constructions will be omitted when they may cause confusion in understanding the present disclosure.
And the shapes and dimensions of the various elements in the drawings do not reflect actual sizes and proportions, but merely illustrate the contents of the embodiments of the present disclosure. In addition, in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.
Unless otherwise known, numerical parameters in this specification and the appended claims are approximations that may vary depending upon the desired properties sought to be obtained by the present disclosure. In particular, all numbers expressing quantities of ingredients, reaction conditions, and so forth used in the specification and claims are to be understood as being modified in all instances by the term "about". In general, the meaning of expression is meant to include a variation of + -10% in some embodiments, a variation of + -5% in some embodiments, a variation of + -1% in some embodiments, and a variation of + -0.5% in some embodiments by a particular amount.
Furthermore, the word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.
The use of ordinal numbers such as "first," "second," "third," etc., in the description and the claims to modify a corresponding element does not by itself connote any ordinal number of elements or the order of manufacturing or use of the ordinal numbers in a particular claim, merely for enabling an element having a particular name to be clearly distinguished from another element having the same name.
Similarly, it should be appreciated that in the above description of exemplary embodiments of the disclosure, various features of the disclosure are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various disclosed aspects. However, the disclosed method should not be construed as reflecting the intention that: i.e., the claimed disclosure requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this disclosure.
While the foregoing embodiments have been described in some detail for purposes of clarity of understanding, it will be understood that the foregoing embodiments are merely illustrative of the invention and are not intended to limit the invention, and that any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the present disclosure are intended to be included within the scope of the present disclosure.
Claims (7)
1. A marine two-stroke diesel cylinder liner of variable scavenging duration comprising:
the first cylinder liner comprises a first fixed end and a first embedded end, the first embedded end of the first cylinder liner is provided with a first annular groove, and the first annular groove comprises a first inner wall sleeve and a first outer wall sleeve; the first inner wall is sleeved with a first inner gear shaping; the first outer wall is sleeved with a first external gear shaping, and the first internal gear shaping and the first external gear shaping are arranged at intervals around the axis;
the second cylinder jacket comprises a second fixed end and a second embedded end, the second embedded end of the second cylinder jacket is provided with a second annular groove, and the second annular groove comprises a second inner wall sleeve and a second outer wall sleeve; the second inner wall is sleeved with a second inner gear shaping; the second outer wall is sleeved with a second outer gear shaping, the second inner gear shaping and the second outer gear shaping are arranged at intervals around the axis, the first inner gear shaping is embedded with the second outer gear shaping, and the first outer gear shaping is embedded with the second inner gear shaping; so as to form a scavenging port of the cylinder sleeve of the marine two-stroke diesel engine;
the power support device comprises a hydraulic cylinder, and the hydraulic cylinder is connected with the second fixed end of the second sub cylinder sleeve.
2. The marine two-stroke diesel cylinder liner according to claim 1, wherein the hydraulic cylinders are provided with n, n being connected to the second fixed end of the second sub cylinder liner, n being uniformly distributed in the circumferential direction of the second sub cylinder liner, where n > 1;
the power support device further includes:
the oil pump is connected with the motor; the oil outlets of the oil pumps are respectively supplied with hydraulic oil to n hydraulic cylinders through n paths of oil paths;
the displacement sensor is used for respectively detecting the displacement of each hydraulic cylinder;
and the proportional reversing valve is respectively connected with the n hydraulic cylinders, and the opening degree of the proportional reversing valve is controlled according to the displacement of each hydraulic cylinder detected by the displacement sensor.
3. The marine two-stroke diesel cylinder liner according to claim 2, the power support device further comprising:
the first oil filter is arranged between the oil tank and the oil pump;
the second oil filter is arranged behind the oil pump;
a check valve disposed between the first oil filter and the oil pump;
and an overflow valve provided in a branch line between the oil pump and the second oil filter.
4. The marine two-stroke diesel cylinder liner according to claim 1, wherein contact edges of the first and second outer gear inserts are provided with chamfers.
5. The marine two-stroke diesel cylinder liner according to claim 1, wherein inner edges of the first and second inner inserts are provided with chamfers.
6. The marine two-stroke diesel cylinder liner according to claim 1, wherein the first outer gear shaping, the second outer gear shaping, the first inner gear shaping, and the second inner gear shaping are profiled contact surfaces.
7. The marine two-stroke diesel cylinder liner according to claim 6, wherein the contact surface is an arcuate surface having a radius less than a distance from a point on the arcuate surface to the cylinder liner axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810440724.6A CN108661817B (en) | 2018-05-10 | 2018-05-10 | Marine two-stroke diesel engine cylinder sleeve with variable scavenging duration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810440724.6A CN108661817B (en) | 2018-05-10 | 2018-05-10 | Marine two-stroke diesel engine cylinder sleeve with variable scavenging duration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108661817A CN108661817A (en) | 2018-10-16 |
| CN108661817B true CN108661817B (en) | 2023-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810440724.6A Active CN108661817B (en) | 2018-05-10 | 2018-05-10 | Marine two-stroke diesel engine cylinder sleeve with variable scavenging duration |
Country Status (1)
| Country | Link |
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| CN (1) | CN108661817B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5638512A (en) * | 1979-09-05 | 1981-04-13 | Mitsubishi Heavy Ind Ltd | Two-cycle internal combustion engine |
| JPS59192824A (en) * | 1983-04-16 | 1984-11-01 | Hitachi Zosen Corp | Inner sleeve type scavenge and exhaust control valve |
| US5000133A (en) * | 1989-05-09 | 1991-03-19 | Isuzu Motors Limited | Two-cycle heat-insulating engine |
| CN1239180A (en) * | 1998-06-15 | 1999-12-22 | 瓦特西拉Nsd施韦兹公司 | Diesel engine |
| CN105715357A (en) * | 2014-12-22 | 2016-06-29 | 温特图尔汽柴油公司 | Cylinder assembly and throttle element for a cylinder liner |
| CN208236507U (en) * | 2018-05-10 | 2018-12-14 | 天津大学 | The two-stroke diesel engines cylinder jacket of variable scavenging duration |
-
2018
- 2018-05-10 CN CN201810440724.6A patent/CN108661817B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5638512A (en) * | 1979-09-05 | 1981-04-13 | Mitsubishi Heavy Ind Ltd | Two-cycle internal combustion engine |
| JPS59192824A (en) * | 1983-04-16 | 1984-11-01 | Hitachi Zosen Corp | Inner sleeve type scavenge and exhaust control valve |
| US5000133A (en) * | 1989-05-09 | 1991-03-19 | Isuzu Motors Limited | Two-cycle heat-insulating engine |
| CN1239180A (en) * | 1998-06-15 | 1999-12-22 | 瓦特西拉Nsd施韦兹公司 | Diesel engine |
| CN105715357A (en) * | 2014-12-22 | 2016-06-29 | 温特图尔汽柴油公司 | Cylinder assembly and throttle element for a cylinder liner |
| CN208236507U (en) * | 2018-05-10 | 2018-12-14 | 天津大学 | The two-stroke diesel engines cylinder jacket of variable scavenging duration |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108661817A (en) | 2018-10-16 |
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