CN104005873A - Engine cylinder sleeve - Google Patents
Engine cylinder sleeve Download PDFInfo
- Publication number
- CN104005873A CN104005873A CN201410180444.8A CN201410180444A CN104005873A CN 104005873 A CN104005873 A CN 104005873A CN 201410180444 A CN201410180444 A CN 201410180444A CN 104005873 A CN104005873 A CN 104005873A
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- Prior art keywords
- cylinder sleeve
- engine
- cylinder liner
- annular groove
- liner body
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Abstract
The invention discloses an engine cylinder sleeve. The engine cylinder sleeve comprises a cylindrical cylinder sleeve body, wherein the outer wall of the cylindrical cylinder sleeve body is in the shape of a step. The outer diameter of the upper portion of the cylinder body is larger and the upper portion of the cylinder sleeve body corresponds to a water cavity of an engine body. The upper end of the outer wall on the upper portion of the cylinder sleeve body and the lower end of the outer wall on the upper portion of the cylinder sleeve body are provided with smooth wall faces, a plurality of annular grooves are formed between the two wall faces, the annular grooves are isolated through isolating strips and the largest outer diameter of the isolation strips is smaller than the outer diameter of the upper portion of the cylinder sleeve body. The axial cross section of the outer wall on the upper portion of the cylinder sleeve body is wavy. Compared with a traditional cylinder sleeve with the same diameter, the total area of the outer surface of the engine cylinder sleeve is obviously increased, therefore, the contacting area between the cylinder sleeve and cooling water is increased, heat of a combustion room can be transmitted easily and the heat dissipation requirements of a higher-load engine can be met.
Description
Technical field
The present invention relates to engine art, particularly a kind of air cylinder sleeve of engine.
Background technique
Cylinder liner is important component in motor, it is arranged in the cylinder-bore of body, and its top is fixed jointly to form the working space of cylinder by cylinder head, the piston of motor is reciprocating at cylinder cover inner hole, and the outer surface of cylinder liner passes through water quench.Current wet type (water-cooled) cylinder liner construction is cylindric, and its outer surface great majority are smooth cylndrical surface, and after the cylinder-bore of body and the diameter of cylinder liner are determined, the heat diffusion area of cylinder liner is just substantially definite.In the market, along with motor miniaturization increasingly, and the reinforcing degree of motor constantly increases, the heat producing in cylinder is also along with greatly increasing, cause engine heat load to increase, original outer surface is that the cylinder liner heat diffusion area of cylndrical surface is limited, radiating requirements when its heat dissipation potential and heat transfer effect can not meet engine operation fully.If cylinder liner can not pass heat in time, easily cause sticking of piston rings and cylinder liner rapid wearing and produce the adverse consequences that end grinds, affect the normal operation of motor, the life-span of motor reduces.
Therefore the heat dissipation potential and the heat transfer effect that, how to improve cylinder liner are problems of needing solution badly.
Summary of the invention
The present invention, in order further to improve the heat dissipation potential of the wet liner that existing outer surface is cylndrical surface, has invented a kind of air cylinder sleeve of engine, and it has increased the heat diffusion area of cylinder liner outer surface, and heat transfer effect is good, improves the working life of cylinder liner.
For solving the problems of the technologies described above, the present invention adopts following technological scheme:
A kind of air cylinder sleeve of engine, it comprises: an outer wall is step-like cylindric cylinder liner body, the external diameter on described cylinder liner body top is larger, and described cylinder liner body top is corresponding with the water cavity of engine body, wherein: the outer wall on described cylinder liner body top is provided with some by the annular groove separating every band, and described maximum outside diameter every band be less than the external diameter on described cylinder liner body top.
Preferably, the two ends up and down of described cylinder liner body external wall of upper portion are respectively arranged with two sections of hydraulically smooth surfaces, and described annular groove and being arranged between described two hydraulically smooth surfaces every band.
Preferably, the axial cross section of described annular groove is the circular-arc of indent.
Preferably, the degree of depth of described annular groove is 0.3～3mm.
Preferably, the axial cross section every band between described annular groove is the circular-arc of evagination so that the axial cross section of the external wall of upper portion of described cylinder liner body is wavy, and described peak place diameter every band is less than the external diameter of described hydraulically smooth surface.
Preferably, described annular groove equidistantly distributes along the axial direction on described cylinder liner body top.
Preferably, the spacing of described annular groove is 4～20mm.
The present invention compared with prior art, has following beneficial effect:
1, the outer surface of a kind of air cylinder sleeve of engine of the present invention is provided with annular groove, the gross area with respect to its outer surface of traditional wet cylinder liner of same diameter enlarges markedly, the area of contact of air cylinder sleeve of engine and cooling water is increased, be conducive to the heat of firing chamber to pass, can meet the more engine radiating needs of high load.
2, the shape that a further advantage of the invention is annular groove is the circular-arc of indent, shape every band is the circular-arc of evagination, whole cylinder liner body external wall of upper portion is wavy, be conducive to improve the cooling capacity of air cylinder sleeve of engine, and heat transfer effect is good, reliability is higher, and the long service life of air cylinder sleeve of engine has alleviated the phenomenon of sticking of piston rings simultaneously.
3, the present invention further advantage to be annular groove equidistantly distribute the outer surface on described cylinder liner body top along the axial direction of cylinder liner body, air cylinder sleeve of engine each several part is comparatively even because of the suffered pressure of explosion of fuel combustion, can effectively eliminate stress concentrated; The heat that simultaneously air cylinder sleeve of engine each several part can transmit is also comparatively even, effectively prevents that Liao Yin local heating is inhomogeneous and causes cylinder liner deformation, has extended the working life of air cylinder sleeve of engine.
4, the present invention further advantage be simple in structure, processing technology is uncomplicated, manufacture cost is lower.
Accompanying drawing explanation
Accompanying drawing 1 is the perspective view of a kind of air cylinder sleeve of engine of the present invention;
Accompanying drawing 2 is the axial sectional view of a kind of air cylinder sleeve of engine of the present invention;
Wherein:
1, cylinder liner body;
2, annular groove;
3, every band;
4, hydraulically smooth surface.
Embodiment
Referring to accompanying drawing and in conjunction with embodiment, further describe the present invention, to make those skilled in the art can implement according to this with reference to specification word, but be to be understood that protection scope of the present invention is not subject to the restriction of embodiment.Although more used the terms such as cylinder liner body and annular groove herein, do not got rid of the possibility of using other term.Use these terms to be only used to describe more easily and explain essence of the present invention, do not represent the restriction to the concrete technological scheme of the present invention.
Embodiment
As shown in Figure 1, a kind of air cylinder sleeve of engine, it comprises: cylinder liner body 1 and annular groove 2, wherein:
Cylinder liner body 1 is step-like cylindrical body for outer wall, and the external diameter on cylinder liner body 1 top is larger, in the time of in the cylinder that cylinder liner body 1 is installed on to engine body, the step of its outer wall is for supporting and location, and the bottom of cylinder liner body 1 is that smooth cylndrical surface is for guiding and location.While being installed in the cylinder of engine body, cylinder liner body 1 top is corresponding with the water cavity of body, the two ends up and down on cylinder liner body 1 top are respectively arranged with two sections of hydraulically smooth surfaces 4 for coordinating and lead and locate with bottom, and cylinder liner body 1 is provided with some annular grooves 2 between two sections hydraulically smooth surface 4, between annular groove 2, by every being with 3 to separate, annular groove 2 equidistantly distributes along the axial direction on cylinder liner body 1 top.By annular groove 2, can make cylinder liner body 1 outer wall surface area enlarge markedly with respect to the gross area of the outer wall surface of the traditional wet cylinder liner of same diameter, cylinder liner body 1 increases with the area of contact of cooling water, be conducive to the heat of firing chamber to pass, to meet the more engine radiating needs of high load, and because annular groove 2 equidistantly distributes, cylinder liner body 1 suffered pressure of explosion when fuel combustion is comparatively even, annular groove 2 can effectively eliminate stress concentrated, the heat that air cylinder sleeve of engine each several part can transmit is simultaneously also comparatively even, effectively prevent that Liao Yin local heating is inhomogeneous and cause the distortion of air cylinder sleeve of engine, extended the working life of air cylinder sleeve of engine.Annular groove 2 is the circular-arc of indent along the axial cross section of cylinder liner body 1, and every being the circular-arc of evagination with 3 axial cross sections along cylinder liner body 1, and than the external diameter of hydraulically smooth surface 4, smaller so that cooling water can circulate between annular groove 2 every the diameter at the peak place with 3.As shown in Figure 2, the top of cylinder liner body 1 is provided with annular groove 2 and the outer wall integral body every the position with 3 is wavy, the resistance being subject in the time of can making flow of cooling water is little, the smooth and easy cooling capacity that is conducive to improve air cylinder sleeve of engine of flow of cooling water, and heat transfer effect is good, reliability is higher, and the long service life of air cylinder sleeve of engine has alleviated the phenomenon of sticking of piston rings simultaneously.
According to the air cylinder sleeve of engine of different size, the spacing of the degree of depth of annular groove 2 and annular groove 2 is also different, and the degree of depth of annular groove 2 is preferably set to 0.3～3mm, and it need to guarantee that the wall thickness on cylinder liner body 1 top can meet the normal performance requirement using.The spacing of annular groove 2 is 4～20mm preferably, and after annular groove 2 Depth determinations, the size of annular groove 2 spacing and the size of the needed heat diffusion area of motor are inversely proportional to, if need heat diffusion area large, spacing is just corresponding smaller.The heat diffusion area of motor actual demand and cylinder sleeve intensity can be combined and comprehensively chooses suitable annular groove 2 degree of depth and spacing, fully to improve heat dispersion and the heat transfer effect of air cylinder sleeve of engine, extend the working life of air cylinder sleeve of engine.
Cylinder liner body 1 can by Foundry Production out, annular groove 2 and every be with 3 through following process out, overall structure is simple, manufacturing process is simple, manufacture cost is lower.
Disclosed is above only specific embodiments of the invention; but; the present invention is not limited thereto, and the changes that any person skilled in the art can think of is also done certain modification or supplements or adopt similar mode to replace described specific embodiment, all should fall into protection scope of the present invention.
Claims (7)
1. an air cylinder sleeve of engine, it comprises: an outer wall is step-like cylindric cylinder liner body, the external diameter on described cylinder liner body top is larger, and described cylinder liner body top is corresponding with the water cavity of engine body, it is characterized in that: the outer wall on described cylinder liner body top is provided with some by the annular groove separating every band, and described maximum outside diameter every band is less than the external diameter on described cylinder liner body top.
2. air cylinder sleeve of engine according to claim 1, is characterized in that: the two ends up and down of described cylinder liner body external wall of upper portion are respectively arranged with two sections of hydraulically smooth surfaces, and described annular groove and being arranged between described two hydraulically smooth surfaces every band.
3. air cylinder sleeve of engine according to claim 2, is characterized in that: the axial cross section of described annular groove is the circular-arc of indent.
4. air cylinder sleeve of engine according to claim 3, is characterized in that: the degree of depth of described annular groove is 0.3～3mm.
5. air cylinder sleeve of engine according to claim 4, it is characterized in that: the axial cross section every band between described annular groove is the circular-arc of evagination so that the axial cross section of the external wall of upper portion of described cylinder liner body is wavy, and described peak place diameter every band is less than the external diameter of described hydraulically smooth surface.
6. according to the air cylinder sleeve of engine described in any one in claim 1-5, it is characterized in that: described annular groove equidistantly distributes along the axial direction on described cylinder liner body top.
7. air cylinder sleeve of engine according to claim 6, is characterized in that: the spacing of described annular groove is 4～20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410180444.8A CN104005873A (en) | 2014-04-30 | 2014-04-30 | Engine cylinder sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410180444.8A CN104005873A (en) | 2014-04-30 | 2014-04-30 | Engine cylinder sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104005873A true CN104005873A (en) | 2014-08-27 |
Family
ID=51366720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410180444.8A Pending CN104005873A (en) | 2014-04-30 | 2014-04-30 | Engine cylinder sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104005873A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108361120A (en) * | 2017-01-27 | 2018-08-03 | 中原内配集团(美国)有限责任公司 | Cylinder jacket with different thermal conductivities |
| CN108687331A (en) * | 2017-03-29 | 2018-10-23 | 福特环球技术公司 | Cylinder sleeve and forming method for internal combustion engine |
| CN113818969A (en) * | 2021-11-04 | 2021-12-21 | 北京长源朗弘科技有限公司 | Cylinder sleeve of diesel engine cylinder with cooling function |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050257756A1 (en) * | 2004-05-24 | 2005-11-24 | Honda Motor Co., Ltd. | Cylinder liner cooling structure |
| JP2010014025A (en) * | 2008-07-03 | 2010-01-21 | Toyota Motor Corp | Cooling structure for internal combustion engine |
| CN201582002U (en) * | 2009-12-09 | 2010-09-15 | 苏州麦格特发动机有限公司 | Cylinder jacket of diesel engine |
| CN201635853U (en) * | 2009-12-30 | 2010-11-17 | 绵阳新晨动力机械有限公司 | Vehicle engine cylinder body with cylinder sleeve location structure |
| CN102168625A (en) * | 2011-05-25 | 2011-08-31 | 中国兵器工业集团第七○研究所 | Cylinder sleeve with spiral recess |
| CN202125366U (en) * | 2010-12-29 | 2012-01-25 | 柳州市恒达动力机械制造有限公司 | Central cylinder liner for internal combustion engine |
| CN202560381U (en) * | 2012-03-27 | 2012-11-28 | 安徽白兔湖动力有限公司 | Cylinder sleeve provided with annular sinking table sealing surface |
| CN203809139U (en) * | 2014-04-30 | 2014-09-03 | 广西玉柴动力机械有限公司 | Engine cylinder jacket |
-
2014
- 2014-04-30 CN CN201410180444.8A patent/CN104005873A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050257756A1 (en) * | 2004-05-24 | 2005-11-24 | Honda Motor Co., Ltd. | Cylinder liner cooling structure |
| JP2010014025A (en) * | 2008-07-03 | 2010-01-21 | Toyota Motor Corp | Cooling structure for internal combustion engine |
| CN201582002U (en) * | 2009-12-09 | 2010-09-15 | 苏州麦格特发动机有限公司 | Cylinder jacket of diesel engine |
| CN201635853U (en) * | 2009-12-30 | 2010-11-17 | 绵阳新晨动力机械有限公司 | Vehicle engine cylinder body with cylinder sleeve location structure |
| CN202125366U (en) * | 2010-12-29 | 2012-01-25 | 柳州市恒达动力机械制造有限公司 | Central cylinder liner for internal combustion engine |
| CN102168625A (en) * | 2011-05-25 | 2011-08-31 | 中国兵器工业集团第七○研究所 | Cylinder sleeve with spiral recess |
| CN202560381U (en) * | 2012-03-27 | 2012-11-28 | 安徽白兔湖动力有限公司 | Cylinder sleeve provided with annular sinking table sealing surface |
| CN203809139U (en) * | 2014-04-30 | 2014-09-03 | 广西玉柴动力机械有限公司 | Engine cylinder jacket |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108361120A (en) * | 2017-01-27 | 2018-08-03 | 中原内配集团(美国)有限责任公司 | Cylinder jacket with different thermal conductivities |
| CN108687331A (en) * | 2017-03-29 | 2018-10-23 | 福特环球技术公司 | Cylinder sleeve and forming method for internal combustion engine |
| CN108687331B (en) * | 2017-03-29 | 2021-11-12 | 福特环球技术公司 | Cylinder liner for internal combustion engine and method of forming |
| CN113818969A (en) * | 2021-11-04 | 2021-12-21 | 北京长源朗弘科技有限公司 | Cylinder sleeve of diesel engine cylinder with cooling function |
| CN113818969B (en) * | 2021-11-04 | 2022-05-17 | 北京长源朗弘科技有限公司 | Cylinder sleeve of diesel engine cylinder with cooling function |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20140827 |