CN102278225A - Low-friction axial unequal-angle platform honing cylinder jacket - Google Patents
Low-friction axial unequal-angle platform honing cylinder jacket Download PDFInfo
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- CN102278225A CN102278225A CN 201110191825 CN201110191825A CN102278225A CN 102278225 A CN102278225 A CN 102278225A CN 201110191825 CN201110191825 CN 201110191825 CN 201110191825 A CN201110191825 A CN 201110191825A CN 102278225 A CN102278225 A CN 102278225A
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- 238000013461 design Methods 0.000 abstract description 6
- 238000012360 testing method Methods 0.000 description 17
- 238000000034 method Methods 0.000 description 10
- 238000012545 processing Methods 0.000 description 9
- 239000000314 lubricant Substances 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000010327 methods by industry Methods 0.000 description 1
- 238000005459 micromachining Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Abstract
The invention provides a low-friction axial unequal-angle platform honing cylinder jacket, belonging to the design field of cylinder jackets. The low-friction axial unequal-angle platform honing cylinder jacket is characterized in that the central part of the inner wall of the cylinder jacket is provided with a slotted reticulate pattern with an included angle alpha, wherein alpha is a reticulate-pattern included angle of a honing reticulate pattern at the central part of the cylinder jacket in the direction of a central axial line of the cylinder jacket, and is larger than 160 degrees and smaller than 180 degrees; and two end parts of the inner wall of the cylinder jacket are provided with slotted reticulate patterns with an included angle beta, wherein beta is a reticulate-pattern included angle of the honing reticulate pattern at two end parts of the cylinder jacket in the direction of the central axial line of the cylinder jacket, and is larger than 0 degree and smaller than 20 degrees. The low-friction axial unequal-angle platform honing cylinder jacket disclosed by the invention can reduce the friction coefficient of the cylinder jacket.
Description
Technical field:
The present invention relates to a kind of low friction mandrel to equal angles platform honing cylinder liner not, belong to the cylinder liner design field.
Background technique:
In engine system, the frictional loss that consumes on piston/cylinder cover, two pairs of friction pairs of piston ring/cylinder sleeve accounts for about 44% of whole frictional loss.Therefore, all the time, people did not stop all the time in the research that air cylinder sleeve of engine reduces to rub, increase aspect lubricating.Add that in order to alleviate environmental pollution, Chinese Light-duty automobile III, IV emission standard that State Bureau of Environmental Protection executed on January 1st, 2007 make that the tribological property that further improves air cylinder sleeve of engine is extremely urgent.
The plateau honing cross hatches technology is a Surface-micromachining process of just bringing into use mid-term in last century.Plateau honing cross hatches technology has become precision pair holes such as oil hydraulic cylinder important in air cylinder sleeve of engine, cylinder-bore and the engineering machinery and has processed requisite process engineering, is generally paid attention in high-power, high speed class motor car engine and medium-speed ship bavin motor.On cylinder liner internal wall, process platform reticulate pattern, help shortening the motor break-in cycle, can provide good lubricating condition to its normal operation at a certain amount of lubricant oil of reticulate pattern groove stored during work.Up to the present, the cylinder liner internal wall plateau honing cross hatches mostly is the obtuse angle at the reticulate pattern angle of cylinder liner central axial direction, and common is 135 ± 15 °.In order to increase the back-flow velocity of lubricant oil in cross hatch, also there is patent that it is designed to 30 ~ 85 °.In these designs, reticulate pattern is that homogeneous distributes on entire cylinder cover internal face.Its processing method is that honing machine drive honing head rotates and to-and-fro motion simultaneously at cylinder cover inner hole, realizes the setting value of cylinder liner central axial direction reticulate pattern angle by the size of controlling two speed.
Summary of the invention:
The object of the present invention is to provide a kind of low friction mandrel to equal angles platform honing cylinder liner not, further reduce the cylinder sleeve friction factor.
In engine working process, piston and piston ring are reciprocating along the cylinder liner central axial direction, and the speed that cylinder liner internal wall experienced becomes sinusoidal rule to change.That is, the speed that the two-end part of cylinder liner experience is less, and the bigger speed of cylinder liner intermediate portion experience.Groove-shaped striped on the cylinder liner internal wall not only plays the effect of storage lubricant oil, simultaneously, when speed is big, because the existence of groove can produce hydrodynamic pressure, thereby reduces direct contact the between cylinder liner and piston or the piston ring, and then reduces its frictional force.The angle of groove and velocity attitude has a direct impact the ability that oil film produces hydrodynamic pressure.When speed was big, the easier oil film that makes of the groove of vertical speed direction produced hydrodynamic pressure.And speed hour mainly is to rely on lubricant oil in the groove to compensate to contact surface to reduce friction, and at this moment, the groove parallel with velocity attitude can play better effect.The design of carrying out reticulate pattern at cylinder liner central axial direction diverse location helps further to improve the tribological property of cylinder liner, but the design of this aspect yet there are no report.
The present invention is achieved through the following technical solutions: honing head rotatablely moves in cylinder cover inner hole and the size of to-and-fro motion speed by controlling, make it to process near groove-shaped reticulate pattern perpendicular to cylinder liner central axial direction (160 °＜α＜180 °) in the intermediate portion of cylinder liner internal wall, two-end part in cylinder liner processes near the groove-shaped reticulate pattern that is parallel to cylinder liner central axial direction (0 °＜β＜20 °), and the degree of depth of its groove-shaped reticulate pattern is identical with existing cross hatch parameter with width parameter.Wherein a kind of limit case is that the intermediate portion is the groove-shaped striped perpendicular to the cylinder liner central axial direction, and two-end part is the groove-shaped striped that is parallel to the cylinder liner central axial direction.
The present invention compares with existing cylinder liner internal wall plateau honing cross hatches structure, has lower friction factor.When piston and piston ring are in the cylinder liner intermediate portion, can produce better loading capacity of oil film, when being in the cylinder liner two-end part, piston and piston ring can better obtain the supply of the lubricant oil in the groove-shaped striped.Thereby, further improve the greasy property of cylinder liner, improve its working life.
Description of drawings:
Fig. 1 is the schematic representation of existing cylinder liner internal wall cross hatch;
Fig. 2 is a cylinder liner internal wall central axial direction varied angle cross hatch distribution map of the present invention;
Fig. 3 is the limit case along cylinder liner central axial direction varied angle honing striped;
The number in the figure title: 1 is cylinder liner internal wall, 2 is cross hatch, 3 are the approaching groove-shaped reticulate pattern that is parallel to the cylinder liner central axial direction, 4 is near the groove-shaped reticulate pattern perpendicular to the cylinder liner central axial direction, 5 for being parallel to the groove-shaped striped of cylinder liner central axial direction, and 6 is the groove-shaped striped perpendicular to the cylinder liner central axial direction.
Embodiment:
Before enforcement, at first carried out simulation.Working depth is 7 μ m on the cylinder liner test specimen, and width is the groove striped of 100 μ m, and the angle of its groove direction and test specimen moving direction is respectively 0 °, 45 ° and 90 °.Test is back and forth being carried out on the testing machine.In the process of the test, the testing machine crank rolling velocity is 50-500r/min, and promptly the maximum line velocity of test specimen experience is 0.21-2.1m/s, and test mass is 0.5MPa.After the test, when crank rolling velocity 50r/min, the test specimen friction factor with 0 ° of groove striped is 0.03402, and the test specimen friction factor with 45 ° of groove stripeds is 0.03725, and the test specimen friction factor with 90 ° of groove stripeds is 0.04177.When crank rolling velocity is 200r/min, have 0 °, the test specimen friction factor of 45 ° and 90 ° groove stripeds is respectively 0.02995,0.03177 and 0.03011.When crank rolling velocity is 500r/min, have 0 °, the test specimen friction factor of 45 ° and 90 ° groove stripeds is respectively 0.02761,0.02526 and 0.02217.Find out that from test result when speed was low, the groove angle was that 0 ° test specimen has lowest friction coefficient.Along with the increase of speed, the groove angle is that 90 ° test specimen shows minimum friction factor gradually.And in real engine work, the speed of cylinder liner intermediate portion experience is often greater than 7m/s, and the speed of two-end part experience still is 0m/s.Thereby the groove-shaped reticulate pattern of estimating in processing 160 °＜α＜180, cylinder liner intermediate portion °, the groove-shaped reticulate pattern in cylinder liner two-end part processing 0 °＜β＜20 ° can make cylinder liner have lower friction factor.
The present invention proposes to carry out different cross hatch designs in the cylinder liner central axial direction, is that prerequisite is implemented with the technical solution of the present invention.It is specially: by the motion of control honing head, be implemented in the cross hatch of the intermediate portion processing of cylinder liner near vertical gas cylinder sleeve central axial direction, the ratio of its processing part is 1/2-2/3 of a cylinder liner length, at the cross hatch of cylinder liner two ends symmetry processing near parallel cylinder liner central axial direction.Add man-hour, honing head moves upward in the process, makes honing head make low-speed rotation, the top of fast feed processing cylinder liner increases the speed that rotatablely moves then, reduces the intermediate portion of feed speed processing cylinder liner, reduce the speed of rotatablely moving subsequently again, the bottom of fast feed processing cylinder liner.Honing head moves downward in the process, and its velocity variations is identical with said process.Make cylinder liner top working position and bottom working position be point symmetry in the cylinder liner central axis after the processing.
Claims (2)
1. a low friction mandrel is to equal angles platform honing cylinder liner not, it is characterized in that: the intermediate portion of cylinder liner internal wall has the groove-shaped reticulate pattern of 160 °＜α＜180 °, and wherein α is the reticulate pattern angle of cylinder liner intermediate portion plateau honing cross hatches in the cylinder liner central axial direction; The cylinder liner internal wall two-end part has the groove-shaped reticulate pattern of 0 °＜β＜20 °, and wherein β is the reticulate pattern angle of cylinder liner two-end part plateau honing cross hatches in the cylinder liner central axial direction.
2. low friction mandrel according to claim 1 is characterized in that to equal angles platform honing cylinder liner not: α=180 °, β=0 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110191825 CN102278225A (en) | 2011-07-11 | 2011-07-11 | Low-friction axial unequal-angle platform honing cylinder jacket |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110191825 CN102278225A (en) | 2011-07-11 | 2011-07-11 | Low-friction axial unequal-angle platform honing cylinder jacket |
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| CN102278225A true CN102278225A (en) | 2011-12-14 |
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| CN 201110191825 Pending CN102278225A (en) | 2011-07-11 | 2011-07-11 | Low-friction axial unequal-angle platform honing cylinder jacket |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102997868A (en) * | 2012-11-01 | 2013-03-27 | 奇瑞汽车股份有限公司 | Method for measuring cross-hatch angle of cylinder hole of engine cylinder block |
| JP2014043828A (en) * | 2012-08-28 | 2014-03-13 | Isuzu Motors Ltd | Cylinder block and honing method |
| CN104511798A (en) * | 2014-12-11 | 2015-04-15 | 贵州红林机械有限公司 | Honing processing method for high-precision copper rotor plunger holes |
| CN107061038A (en) * | 2016-02-05 | 2017-08-18 | 大众汽车有限公司 | The cylinder bearing face of the cylinder of reciprocating-piston machine |
| CN107654306A (en) * | 2017-07-25 | 2018-02-02 | 中原内配集团安徽有限责任公司 | A kind of high occlusal pattern cylinder sleeve and preparation method thereof |
| CN108487999A (en) * | 2018-04-08 | 2018-09-04 | 武汉理工大学 | A kind of cylinder-barrel surface texture and its design method promoting comprehensive performance |
| CN108747798A (en) * | 2018-05-29 | 2018-11-06 | 中原内配集团股份有限公司 | A kind of differentiation honing cylinder jacket and preparation method thereof |
| CN109441773A (en) * | 2018-11-12 | 2019-03-08 | 扬州瑞平环保科技有限公司 | A kind of compressor cylinder jacket |
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| JP2004176556A (en) * | 2002-11-25 | 2004-06-24 | Toyota Motor Corp | Cylinder of internal combustion engine |
| CN2703132Y (en) * | 2004-06-18 | 2005-06-01 | 臧权同 | Platform overlapping curve cylinder jacket for engine |
| JP2005188366A (en) * | 2003-12-25 | 2005-07-14 | Toyota Motor Corp | Forming method for cylinder block and cylinder inner peripheral face |
| CN201461116U (en) * | 2009-07-01 | 2010-05-12 | 河南省中原内配股份有限公司 | Platform honing reticulate pattern cylinder sleeve of vertical type engine |
| CN101319721B (en) * | 2008-06-13 | 2010-07-28 | 淮阴工学院 | Technical standard of cylinder cover inner hole platform honing reticulate pattern based on three-dimension |
| CN101608910B (en) * | 2009-07-30 | 2010-12-29 | 河南省中原内配股份有限公司 | Method for detecting air cylinder sleeve inner hole reticulated honing angle |
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2011
- 2011-07-11 CN CN 201110191825 patent/CN102278225A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004176556A (en) * | 2002-11-25 | 2004-06-24 | Toyota Motor Corp | Cylinder of internal combustion engine |
| JP2005188366A (en) * | 2003-12-25 | 2005-07-14 | Toyota Motor Corp | Forming method for cylinder block and cylinder inner peripheral face |
| CN2703132Y (en) * | 2004-06-18 | 2005-06-01 | 臧权同 | Platform overlapping curve cylinder jacket for engine |
| CN101319721B (en) * | 2008-06-13 | 2010-07-28 | 淮阴工学院 | Technical standard of cylinder cover inner hole platform honing reticulate pattern based on three-dimension |
| CN201461116U (en) * | 2009-07-01 | 2010-05-12 | 河南省中原内配股份有限公司 | Platform honing reticulate pattern cylinder sleeve of vertical type engine |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014043828A (en) * | 2012-08-28 | 2014-03-13 | Isuzu Motors Ltd | Cylinder block and honing method |
| CN102997868A (en) * | 2012-11-01 | 2013-03-27 | 奇瑞汽车股份有限公司 | Method for measuring cross-hatch angle of cylinder hole of engine cylinder block |
| CN104511798A (en) * | 2014-12-11 | 2015-04-15 | 贵州红林机械有限公司 | Honing processing method for high-precision copper rotor plunger holes |
| CN107061038A (en) * | 2016-02-05 | 2017-08-18 | 大众汽车有限公司 | The cylinder bearing face of the cylinder of reciprocating-piston machine |
| CN107061038B (en) * | 2016-02-05 | 2020-10-13 | 大众汽车有限公司 | Cylinder face of a cylinder of a reciprocating piston machine |
| CN107654306A (en) * | 2017-07-25 | 2018-02-02 | 中原内配集团安徽有限责任公司 | A kind of high occlusal pattern cylinder sleeve and preparation method thereof |
| CN108487999A (en) * | 2018-04-08 | 2018-09-04 | 武汉理工大学 | A kind of cylinder-barrel surface texture and its design method promoting comprehensive performance |
| CN108747798A (en) * | 2018-05-29 | 2018-11-06 | 中原内配集团股份有限公司 | A kind of differentiation honing cylinder jacket and preparation method thereof |
| CN108747798B (en) * | 2018-05-29 | 2023-09-12 | 中原内配集团股份有限公司 | Differentiated honing cylinder sleeve and preparation method thereof |
| CN109441773A (en) * | 2018-11-12 | 2019-03-08 | 扬州瑞平环保科技有限公司 | A kind of compressor cylinder jacket |
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Application publication date: 20111214 |