CN109057983B - Engine and engine body thereof - Google Patents
Engine and engine body thereof Download PDFInfo
- Publication number
- CN109057983B CN109057983B CN201811125363.2A CN201811125363A CN109057983B CN 109057983 B CN109057983 B CN 109057983B CN 201811125363 A CN201811125363 A CN 201811125363A CN 109057983 B CN109057983 B CN 109057983B
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- Prior art keywords
- water jacket
- cylinder
- water
- engine
- head bolt
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 143
- 238000009826 distribution Methods 0.000 claims abstract description 27
- 230000002829 reductive effect Effects 0.000 description 21
- 239000000498 cooling water Substances 0.000 description 18
- 238000001816 cooling Methods 0.000 description 17
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000005266 casting Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000001364 upper extremity Anatomy 0.000 description 1
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
- F02F1/02—Cylinders; Cylinder heads having cooling means
- F02F1/10—Cylinders; Cylinder heads having cooling means for liquid cooling
- F02F1/14—Cylinders with means for directing, guiding or distributing liquid stream
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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 discloses engines and engine bodies, wherein the engine body comprises a cylinder body with a plurality of cylinder holes, a water distribution cavity is arranged in the cylinder body, a water jacket is arranged in the side wall between two adjacent cylinder holes, the water jacket is communicated with the water distribution cavity, the bottom end surface of the water jacket is provided with a bulge structure, the height of the bulge structure is less than half of the height of the water jacket, a support beam is arranged in the water jacket, and two ends of the support beam are fixedly connected with two side walls of the water jacket respectively.
Description
Technical Field
The invention relates to the technical field of automobile accessories, in particular to an engine body of engines, and also relates to engines comprising the engine body.
Background
In order to meet the increasingly stringent emission legislation requirements and to meet the competitive advantage of low fuel consumption, engines are increasingly moving towards high detonation pressures.
At present, the explosion pressure of newly developed medium-sized engines with the Europe-six emission standard is more than 20MPa, even reaches 25MPa, and related parts also need to be strictly matched and designed in order to meet the reliability of high-explosion-pressure engines.
The cooling of engine is the important link that guarantees that the engine can effectively work, and prior art to the model that adopts the dry cylinder cover, especially light and medium-sized model, to the cooling between two jars, mostly has all adopted and has set up protruding structure, the structure that forces rivers upward between the jar, can make the better cooling ring of rivers through this structure, optimizes ring department cooling, slows down that machine oil is ageing.
However, the structure leads the height of the raised structure between the cylinders to be larger in order to guide water flow upwards as much as possible, and has the following defects that causes the lower part of the water jacket to become a 'dead water area', the water flow flows slowly, the water flow is wasted, and the heat exchange is poor, secondly, the raised structure between the cylinders is too high during production, storage and transportation of the water jacket sand core, so that the sand core is weak, the sand core has poor rigidity, cracks and even breakage are easy to occur, the rejection rate is increased, and in addition, the raised structure in the middle causes the axial force of the bolt to be more easily transmitted to the upper part of the cylinder hole, and the deformation of the upper part of.
Disclosure of Invention
The invention aims to solve at least problems existing in the prior art, and the aim is realized by the following technical scheme.
The invention provides an engine body of engines, which comprises a cylinder body with a plurality of cylinder holes, wherein a water distribution cavity is arranged in the cylinder body, a water jacket is arranged in the side wall between two adjacent cylinder holes, the water jacket is communicated with the water distribution cavity, the bottom end surface of the water jacket is provided with a bulge structure, the height of the bulge structure is less than half of the height of the water jacket, a support beam is arranged in the water jacket, and two ends of the support beam are respectively fixedly connected with two side walls of the water jacket.
Preferably, the height of the raised structure is greater than , which is one third of the height of the water jacket.
Preferably, the outer surface of the convex structure is a cambered surface structure.
Preferably, the support beams are perpendicular to the cylinder holes on both sides, respectively, and the support beams are located at an upper portion of the water jacket.
Preferably, the distance between the support beam and the top end face of the water jacket is 30-50 mm.
Preferably, the support beam is of a cylindrical structure, and the diameter of the radial section of the support beam is 10-20 mm.
Preferably, the cylinder body is further provided with a plurality of cylinder cover bolt holes, each cylinder cover bolt hole is a counter bore, and the sinking end face of each counter bore is flush with the top point of the protruding structure.
Preferably, the cylinder block is provided with cylinder head bolt lugs corresponding to cylinder head bolt holes, each cylinder head bolt hole is formed in each cylinder head bolt lug, and the two cylinder head bolt lugs located on the two sides of the water jacket extend towards the water jacket.
Preferably, the water distribution cavities are respectively communicated with the upper part of the water jacket, and the bottom end faces of the interfaces of the water distribution cavities and the water jacket are inclined towards the direction of the top end face of the water jacket.
The invention also provides engines, which comprise the engine body.
The engine body of the engine comprises a cylinder body with a plurality of cylinder holes, wherein a water distribution cavity is arranged in the cylinder body, a water jacket is arranged in a side wall between every two adjacent cylinder holes and is communicated with the water distribution cavity, a bulge structure is arranged on the bottom end face of the water jacket, the height of the bulge structure is less than half of the height of the water jacket, a support beam is arranged in the water jacket, and two ends of the support beam are fixedly connected with two side walls of the water jacket.
Based on the structure, the cooling water can guide water flow to go upwards in the cooling process by arranging the convex structure, so that the cylinder body can be effectively cooled, the convex structure is smaller than 1/2 of the overall height of the water jacket, the lower area of the water jacket is effectively reduced, and a 'dead water area' is avoided; meanwhile, as the whole section of the water jacket between the cylinders is reduced, under the same flow, water flow can more quickly pass through the water jacket, the flow speed is increased, and the heat exchange coefficient is larger, so that the upper part of the cylinder hole is better cooled; in addition, the bulge structure of the end face of the bottom of the water jacket is reduced, so that the water jacket is easier to store in the casting production and transportation process, and the casting difficulty and rejection rate are reduced; moreover, the height of the water jacket between the cylinders is reduced, the thickness of the water jacket between the cylinders can be reduced, and the cylinder center distance and the overall length of the engine are reduced under the condition that the cylinder diameters are the same, so that the peripheral size of the engine is optimized, and the competitiveness of a product is improved.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic structural diagram of a cylinder block of an engine body of an engine provided by the invention;
FIG. 2 is a cross-sectional view A-A of the cylinder shown in FIG. 1;
FIG. 3 is a cross-sectional view (cross-section perpendicular to the longitudinal direction of the cylinder bore) of the cylinder block shown in FIG. 1, in which black arrows indicate the flow direction of cooling water (direction from the water distribution chamber to the water jacket);
fig. 4 is a sectional view of the cylinder shown in fig. 1 (a section at the junction of the water distribution chamber and the water jacket).
Reference numerals
1 is a cylinder body;
11 is a cylinder hole;
12 is a counter bore;
13 is a water jacket, 131 is a supporting beam;
14 is a water distribution cavity, 141 is a connector;
and 15 is a cylinder cover bolt lug.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Referring to fig. 1 to 4, fig. 1 is a schematic structural diagram of a cylinder block of an engine body of an engine provided by the present invention; FIG. 2 is a cross-sectional view A-A of the cylinder shown in FIG. 1; FIG. 3 is a cross-sectional view (cross-section perpendicular to the longitudinal direction of the cylinder bore) of the cylinder block shown in FIG. 1, in which black arrows indicate the flow direction of cooling water (direction from the water distribution chamber to the water jacket); fig. 4 is a sectional view of the cylinder shown in fig. 1 (a section at the junction of the water distribution chamber and the water jacket).
In embodiments, the engine block assembly of the engine provided by the invention comprises a cylinder block 1 with a plurality of cylinder holes 11, a water distribution chamber 14 is arranged in the cylinder block 1, a water jacket 13 is arranged in a side wall between two adjacent cylinder holes 11, the water jacket 13 is communicated with the water distribution chamber 14, a raised structure is arranged on the bottom end face of the water jacket 13, the height of the raised structure is less than half of the height of the water jacket 13, a support beam 131 is arranged in the water jacket 13, two ends of the support beam 131 are respectively fixedly connected with two side walls of the water jacket 13, in the structure, a plurality of cylinder holes 11 are arranged on the cylinder block 1 at intervals, wherein the water distribution chamber 14 is arranged in the cylinder block 1 along the array direction of the cylinder holes 11, the water jackets 13 are arranged on the side walls between the adjacent cylinder holes 11, the water jackets 13 are respectively communicated with the water distribution chamber 14, the bottom end face (the end face far away from the cylinder head) of the support beam 13 is a raised structure, the raised structure is towards the top end face (the end face close to the cylinder head) of the water jacket 13, the raised structure is arranged on the side wall of the water jacket 11, the side wall of the water jacket 13, the raised structure is less than , the raised structure, the half of the water jacket 131, the support beam 131 is arranged on the side wall of the cylinder block 1, the cylinder hole.
Based on the structure, the cooling water can be guided upwards in the cooling process by arranging the convex structure, so that the cylinder body 1 can be effectively cooled, the convex structure is smaller than 1/2 of the whole height of the water jacket 13, the lower area of the water jacket 13 is effectively reduced, and a 'dead water area' is avoided; meanwhile, as the whole section of the inter-cylinder water jacket 13 is reduced, under the same flow, water flow can more quickly pass through the inter-cylinder water jacket 13, the flow speed is increased, and the heat exchange coefficient is larger, so that the upper part of the cylinder hole 11 is better cooled; in addition, the protruding structure of the end face of the bottom of the water jacket 13 is reduced, so that the water jacket is easier to store in the casting production and transportation process, and the casting difficulty and rejection rate are reduced; moreover, the height of the inter-cylinder water jacket 13 is reduced by the structure, the thickness of the inter-cylinder water jacket 13 can be reduced, and the cylinder center distance and the overall length of the engine are reduced under the condition that the cylinder diameters are the same, so that the peripheral size of the engine is optimized, and the competitiveness of products is improved.
It should be understood that the minimum thickness of the water jacket 13 has a limit for manufacturability, because the longer the inter-cylinder water jacket 13, the thicker the water jacket core, and thus the longer the body length, due to the draft angle of the water jacket core. Meanwhile, because the supporting beam 131 is arranged in the water jacket 13, the section of the water jacket 13 is reduced, the water flow speed between cylinders is favorably improved, the heat exchange rate in the cooling process is improved, and the cooling effect of the engine is ensured.
, the height of the protruding structure is more than of the height of the water jacket 13. the height of the protruding structure is between 1/3 and 1/2 of the overall height of the water jacket 13, and by the structure, the height of the protruding structure is effectively reduced while the cooling water can effectively flow in the water jacket 13, so that the lower area of the water jacket 13 is effectively reduced, a 'dead water area' is avoided, the cooling effect of the cylinder body 1 is further ensured, and the service life of the engine is guaranteed.
, the outer surface of the convex structure is a cambered surface structure, so that the surface of the convex structure in the middle of the water jacket 13 is relatively moderate, the resistance is reduced when cooling water flows through the cylinder, and the water can be guided upwards more leisurely, thereby effectively ensuring the cooling effect and ensuring the service life of the engine.
It should be understood that, compared with the prior art, the structure of the present application has a high opening position of the water jacket 13 (the distance from the cylinder head is small), the overall height of the water jacket 13 is reduced, and when the height of the protruding structure in the water jacket 13 is small, the purpose of forcing the water flow to go upward can be achieved, so that the processing difficulty and the manufacturing cost are effectively reduced.
, the support beams 131 are perpendicular to the cylinder holes 11 on both sides, the support beams 131 are located on the upper portion of the water jacket 13, since the cylinder head is connected to the cylinder block 1 by bolts, after the cylinder head is connected to the cylinder block 1, the axial force of the bolts is transmitted to the upper portion of the cylinder holes 11, the deformation of the upper portion of the cylinder holes 11 becomes large under the axial force of the bolts of the cylinder head, and the support beams 131 are arranged on the upper portion of the water jacket 13, namely, near the connecting end of the cylinder holes 11 and the cylinder head, by the structure, the strength and rigidity of the cylinder holes 11 can be effectively improved, thereby inhibiting the deformation of the cylinder holes 11 in the axial direction of the.
, the distance between the supporting beam 131 and the top end face of the water jacket 13 is 30-50 mm, and through the structure , a sufficient gap is formed between the top face of the water jacket 13 and the supporting beam 131, so that the cooling water can smoothly flow, the supporting beam 131 is prevented from blocking the cooling water, the cooling effect is ensured, and in addition, the strength of the cylinder hole 11 can be effectively enhanced in , so that the cylinder hole 11 is prevented from deforming, and the reliability of the cylinder body 1 is improved.
, the supporting beam 131 is of a cylindrical structure, the diameter of the radial section of the supporting beam 131 is 10-20 mm, in the structure, the supporting beam 131 is of a cylindrical structure, the outer surface of the supporting beam is of an arc-shaped structure, when cooling water passes through the surface of the supporting beam 131, the arc-shaped structure can effectively reduce the blocking of the cooling water, so that the flow rate of the cooling water is effectively ensured, the circulation speed of the cooling water is ensured, and further the heat exchange speed is ensured, meanwhile, the diameter of the supporting beam 131 is set to be 10-20 mm, the strength of the cylinder hole 11 can be effectively improved in the aspect of , the cylinder hole 11 is prevented from being deformed, the reliability of the cylinder body 1 is improved, in addition, the blocking of the cooling circulation process can be effectively reduced in the aspect of , the flow rate of the cooling water is ensured, and.
Specifically, the cylinder body 1 is further provided with a plurality of cylinder head bolt holes, each cylinder head bolt hole is a counter bore 12, and a sinking end face of each counter bore 12 is flush with a vertex of the protruding structure. Because the cylinder cap is connected with cylinder body 1 through the bolt, the cylinder cap is connected with cylinder body 1 back, and the axial force of bolt transmits to jar hole 11 upper portion, and under the effect of cylinder cap bolt axial force, jar hole 11 upper portion warp can the grow, moves down through the terminal surface that sinks with counter bore 12, makes the bolt stress position move down, reduces the influence of bolt axial force to jar hole 11 upper limb to it warp to reduce jar hole 11.
Specifically, the cylinder body 1 is provided with cylinder head bolt lugs 15 which are equivalent to the number of the cylinder head bolt holes, each cylinder head bolt hole is respectively arranged on each cylinder head bolt lug 15, two cylinder head bolt lugs 15 positioned on two sides of the water jacket 13 respectively extend towards the direction of the water jacket 13, the cylinder head bolt lugs 15 arranged on the cylinder body 1 are arranged at the positions of the counter bores 12, bolts for connecting the cylinder head and the cylinder body 1 are arranged in the counter bores 12, cylinder head bolt lugs 15 are respectively arranged on two sides (two sides in the array direction of the cylinder holes 11) of the water jacket 13, and the two bolt lugs extend towards the direction of the water jacket 13, so that the connecting part between the water distribution cavity 14 and the water jacket 13 forms a herringbone structure, and after cooling water enters the water jacket 13 from the water distribution cavity 14, water flows in all directions can better towards the cylinders, interference between the water flows is avoided, turbulence is prevented, and the cooling effect between the cylinders is improved.
Specifically, the water distribution chambers 14 communicate with the upper portions of the water jackets 13, respectively. By the structure, cooling water can be guided to the upper part of the water jacket 13 when entering the water jacket 13 from the water distribution cavity 14, so that the cooling effect of the upper part of the cylinder hole 11 is improved, and the cooling efficiency is improved.
Specifically, a bottom end surface of a port 141 of the water distribution chamber 14 and the water jacket 13 (i.e., a water inlet of the water jacket 13) is inclined in a direction of a top end surface of the water jacket 13. Through this structure can make the in-process that cooling water got into water jacket 13 through water distribution chamber 14, cooling water can effectively be guided to the upper portion of water jacket 13, realizes the cooling to cylinder hole 11 upper portion, simultaneously, can effectively reduce interface 141 and block the refrigerated, improve the velocity of flow of cooling water to improve the speed of heat exchange, guarantee the cooling effect of engine.
Besides the engine body, the invention also provides kinds of engines comprising the engine body, and other parts of the engine are referred to the prior art and are not described herein again.
It will be understood that, although the terms , second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
- The engine body of the engine comprises a cylinder body with a plurality of cylinder holes, wherein a water distribution cavity is arranged in the cylinder body, a water jacket is arranged in the side wall between two adjacent cylinder holes and is communicated with the water distribution cavity, and the engine body is characterized in that a bulge structure is arranged on the bottom end surface of the water jacket, the height of the bulge structure is less than half of the height of the water jacket, a support beam is arranged in the water jacket, and two ends of the support beam are fixedly connected with two side walls of the water jacket respectively;the support beams are respectively vertical to the cylinder holes on two sides and are positioned at the upper part of the water jacket;the distance between the support beam and the top end face of the water jacket is 30-50 mm;the supporting beam is of a cylindrical structure, and the diameter of the radial section of the supporting beam is 10-20 mm.
- 2. The block of engine as set forth in claim 1, wherein the height of the raised structure is greater than thirds of the height of the water jacket.
- 3. The engine block of claim 2, wherein the outer surface of the raised structure is a cambered surface structure.
- 4. The engine body of claim 1, wherein the cylinder block further comprises a plurality of cylinder head bolt holes, each cylinder head bolt hole is a counter bore, and a sinking end face of each counter bore is flush with a vertex of the protruding structure.
- 5. The engine body of claim 4, wherein a head bolt fastener corresponding to cylinder head bolt holes is provided in the cylinder block, each head bolt hole is formed in each head bolt fastener, and the two head bolt fasteners located on both sides of the water jacket extend in the direction of the water jacket.
- 6. The engine body of claim 1, wherein the water distribution chambers are respectively communicated with the upper portions of the water jackets, and bottom end surfaces of the interfaces of the water distribution chambers and the water jackets are inclined in a direction toward a top end surface of the water jacket.
- An engine of , comprising an engine block according to any one of claims 1 to 6 to .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811125363.2A CN109057983B (en) | 2018-09-26 | 2018-09-26 | Engine and engine body thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811125363.2A CN109057983B (en) | 2018-09-26 | 2018-09-26 | Engine and engine body thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109057983A CN109057983A (en) | 2018-12-21 |
| CN109057983B true CN109057983B (en) | 2020-01-31 |
Family
ID=64766070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811125363.2A Expired - Fee Related CN109057983B (en) | 2018-09-26 | 2018-09-26 | Engine and engine body thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109057983B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009209857A (en) * | 2008-03-05 | 2009-09-17 | Daihatsu Motor Co Ltd | Cylinder block for water-cooled internal combustion engine |
| CN102042116A (en) * | 2010-12-24 | 2011-05-04 | 奇瑞汽车股份有限公司 | Engine cooling water jacket |
| CN202300678U (en) * | 2011-11-08 | 2012-07-04 | 安徽江淮汽车股份有限公司 | Engine cylinder body with open type water jacket |
| CN104775928B (en) * | 2015-04-27 | 2017-03-29 | 奇瑞汽车股份有限公司 | A kind of cylinder block water jacket structure and engine cylinder block |
| CN106321272B (en) * | 2016-11-08 | 2018-10-09 | 广西玉柴机器股份有限公司 | The cylinder block of multi-cylinder diesel engine |
| JP6712947B2 (en) * | 2016-12-28 | 2020-06-24 | 株式会社クボタ | Water cooling engine cooling structure |
-
2018
- 2018-09-26 CN CN201811125363.2A patent/CN109057983B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN109057983A (en) | 2018-12-21 |
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Effective date of registration: 20210601 Address after: 261061 Shandong city in Weifang province Fu hi tech Industrial Development Zone, East Street No. 197 Patentee after: Weichai Power Co.,Ltd. Patentee after: WEICHAI POWER YANGZHOU DIESEL ENGINE Co.,Ltd. Address before: 261061 Shandong city in Weifang province Fu hi tech Industrial Development Zone, East Street No. 197 Patentee before: Weichai Power Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200131 |