CN205206978U - Vermicular cast iron piston ring for internal -combustion engine - Google Patents
Vermicular cast iron piston ring for internal -combustion engine Download PDFInfo
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- CN205206978U CN205206978U CN201520957731.5U CN201520957731U CN205206978U CN 205206978 U CN205206978 U CN 205206978U CN 201520957731 U CN201520957731 U CN 201520957731U CN 205206978 U CN205206978 U CN 205206978U
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- piston ring
- ring body
- epithelium
- tongue
- cylinder
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Abstract
The utility model discloses a vermicular cast iron piston ring for internal -combustion engine, including the piston ring body, the upper surface of piston ring body, lower surface and cover towards ring groove's one side and have one deck anti -sticking film, the one side of piston ring body and cylinder contact are equipped with the one deck wearing layer, the wearing layer extends with the one side of cylinder contact along the piston ring body and forms first tongue and second tongue, the outer peripheral face of first tongue forms the drum shape that bloats, and the piston ring body forms the opening with the one side of cylinder contact, the outer peripheral face of second tongue forms the drum shape that bloats, and the piston ring body forms the opening with the one side of cylinder contact. The utility model discloses a piston ring can be maintain for a long time under high temperature and prevent the effect of adhereing, solves the inhomogeneous problem of contact surface wearing and tearing of cylinder inner peripheral surface.
Description
Technical field
The utility model relates to gas engine part field, particularly a kind of internal-combustion engine vermicular cast iron piston ring.
Background technique
In recent years, along with extending the engine for automobile life-span and improving the market demands of fuel efficiency, the piston ring used this motor proposes that width is little and lightweight, low-tension and the little requirement of frictional loss.Herein, piston ring is installed on piston, for realizing the level and smooth to-and-fro motion of the piston in cylinder, and seals the combustion gas of high temperature.The piston being provided with piston ring makes to form firing chamber in cylinder, thus the explosion pressure that the burning of fuel in this firing chamber produces is converted into the rotation of bent axle.Therefore, require that the piston ring being installed on piston has the blast impulse that can bear in this firing chamber, and for a long time, stably can seal the function of the combustion gas of high temperature.If when piston ring cannot realize the raising of this sealing, by the increase etc. of the reduction or fuel consumption that cause engine output.In order to improve above-mentioned impact resistance and tightness, in piston ring, there is the material of inordinate wear when can avoid initial launch or effectively can prevent the leakage of gas (gas leakage) and be applicable to the various kinds corresponding with the feature of motor such as the shape of lubrication theory.Such as, for piston used for diesel engine, along with the firing pressure of the internal-combustion engine caused according to emission control measure in recent years increases, the load that piston is subject to increases, owing to must can bear so harsh service condition, therefore the material of piston ring groove becomes steel or cast iron system.Therefore, when installing the piston ring identical with piston ring groove material, easily there is adhesive wear.In order to suppress the generation of this adhesive wear, the shape of the piston ring that piston used for diesel engine is installed is configured to, and the upper surface of this piston ring and/or lower face side have the shape at the angle of inclination identical with this piston ring groove.If there is adhesive wear between piston and piston ring, then the sealing between piston ring upper and lower surface and the piston ring groove of piston is deteriorated, and causes the reduction of engine output or the increase etc. of fuel consumption.
Model utility content
Goal of the invention of the present utility model is: for above-mentioned Problems existing, a kind of internal-combustion engine vermicular cast iron piston ring is provided, piston ring at high temperature can be maintained for a long time constantly prevent the effect of adhering, solve the problem that the contact surface abrasion of cylinder inner peripheral surface is uneven.
The technical solution adopted in the utility model is as follows: a kind of internal-combustion engine vermicular cast iron piston ring, comprise piston ring body, the upper surface of described piston ring body, lower surface and be coated with one deck antiadhesion barrier towards the one side of piston ring groove, the one side that piston ring body contacts with cylinder is provided with one deck wearing layer, described antiadhesion barrier comprises leather diaphragm and the second epithelium, described leather diaphragm covers on described second epithelium, described second epithelium covers in piston ring body, described wearing layer extends to form the first tongue and the second tongue along the one side that piston ring body contacts with cylinder, the outer circumferential face of described first tongue forms the drum bloated, and form opening portion in the one side that described piston ring body contacts with cylinder, the outer circumferential face of described second tongue forms the drum bloated, and form opening portion in the one side that described piston ring body contacts with cylinder, namely in the middle part of wearing layer, a gap is formed.
Due to the setting of said structure, frictional force between piston ring and piston can be reduced, and then slow down the generation of bonding phenomenon, namely leather diaphragm is made up of teflon, teflon has antiacid alkali resistant, the feature of anti-various organic solvent, be dissolved in all solvents hardly, simultaneously, teflon has resistant to elevated temperatures feature, its friction factor is extremely low, be widely used, optimal material as adherent layer, therefore, can by the initial stage and slip between ring groove surface and remove the projection of ring groove surface at short notice, significantly can not damage ring groove surface simultaneously.In piston ring, moving up and down of piston can make the upper and lower side knocking ring groove surface of piston ring with firing pressure, namely when piston down moves, the upper side of piston ring groove and antiadhesion barrier upper surface generation knocking are slided and are rubbed, when piston up moves, the downside of piston ring groove and antiadhesion barrier lower surface generation knocking are slided and are rubbed, and two kinds of motions all can allow piston ring be subject to strong stress.But in piston ring of the present utility model, do not damage ring groove surface owing to removing the projection of ring groove surface in early days, therefore, the aggressiveness of ring groove surface to the antiadhesion barrier of piston ring also reduces in early days.Further, antiadhesion barrier makes and knocking between ring groove surface is sliding rubs caused stress and is relaxed, therefore poly-antiadhesion barrier is able to long term maintenance, can continue to maintain the excellent effect preventing adhering.The one side that piston ring body contacts with cylinder is arranged one deck wearing layer, namely wearing layer contacts with cylinder inner wall, the wear resistance of piston ring can be improved on the one hand, on the other hand, the cause that wearing layer is arranged to the first tongue and the second tongue is, because the outer circumferential face of the first tongue and the outer circumferential face of the second tongue are formed as drum respectively, therefore on the outer circumferential face of the first tongue and the outer circumferential face of the second tongue, have cylindrical center portion respectively.Therefore, be ensure that the sealing of piston ring by the cylindrical center portion of the first tongue or the second tongue, thus inhibit gas of combustion to pass to crank chamber side from combustion chamber side.Its result is, the durability of piston ring improves, and prevents and uprises in constant position surface of contact pressure, inhibit the uneven wear of piston ring, clutch release slave cylinder inner peripheral surface.
Further, described second epithelium is manganese phosphate epithelium, thickness is 5-10 μm, described leather diaphragm is teflon epithelium, thickness is 15-30 μm, described wearing layer tungsten carbide coating, average thickness is 50-200 μm, described second epithelium formation method is, upper and lower side to piston ring body and the one side towards piston ring groove carry out abrasive machining, this upper and lower side is made to become platform structure, then ion plating is carried out to the outer circumferential face of this piston ring, form the Tungsten carbite epithelium of thickness about 20 μm, after carrying out degrease by alkali, be flood 6min in the manganese phosphate aqueous solution of 80 DEG C in temperature, thus manganese phosphate epithelium is formed on the outer circumferential face of piston ring body, described leather diaphragm formation method is, by print process, teflon is coated on described second epithelium, described tungsten carbide coating hot spray process sprays, and then be finish-machined to above-mentioned shape.
In sum, owing to have employed technique scheme, the beneficial effects of the utility model are:
1, vermicular cast iron piston ring of the present utility model at high temperature can maintain the effect preventing aluminium from adhering for a long time constantly.
2, vermicular cast iron piston ring structure of the present utility model, solves the problem that the contact surface abrasion of cylinder inner peripheral surface is uneven.
Accompanying drawing explanation
Fig. 1 is the sectional structure chart that piston ring of the present utility model to be arranged on after piston ring groove in the axial direction.
Mark in figure: 1 is piston ring body, and 2 is antiseized, and 3 is wearing layer, and 4 is piston, 5 is cylinder, and 201 is antiadhesion barrier upper surface, and 202 is antiadhesion barrier lower surface, and 301 is gap, 401 is piston ring groove upper side, and 402 is piston ring groove downside, and 501 is cylinder inner wall.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the object of model utility, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, a kind of internal-combustion engine vermicular cast iron piston ring, comprise piston ring body 1, the upper surface of described piston ring body 1, lower surface and be coated with one deck antiadhesion barrier 2 towards the one side of piston ring groove, the one side that piston ring body 1 contacts with cylinder is provided with one deck wearing layer 3, described antiadhesion barrier 2 comprises leather diaphragm and the second epithelium, described leather diaphragm covers on described second epithelium, described second epithelium covers in piston ring body 1, described wearing layer 3 extends to form the first tongue and the second tongue along the one side that piston ring body 1 contacts with cylinder 5, the outer circumferential face of described first tongue forms the drum bloated, and form opening portion in the one side that described piston ring body 1 contacts with cylinder, the outer circumferential face of described second tongue forms the drum bloated, and form opening portion in the one side that described piston ring body 1 contacts with cylinder 5, namely in the middle part of wearing layer, form a gap 301.
Described second epithelium is manganese phosphate epithelium, thickness is 5-10 μm, and (optimum thickness is 8 μm, according to the size of piston ring, also 5 μm or 10 μm can be selected), described leather diaphragm is teflon epithelium, thickness is 15-30 μm, and (optimum thickness is 20 μm, according to the size of piston ring, also 15 μm or 30 μm can be selected), described wearing layer 3 tungsten carbide coating, average thickness is 50-200 μm, and (optimum thickness is 150 μm, according to the size of piston ring, also 50 μm or 300 μm can be selected), described second epithelium formation method is, upper and lower side to piston ring body and the one side towards piston ring groove carry out abrasive machining, this upper and lower side is made to become platform structure, then ion plating is carried out to the outer circumferential face of this piston ring, form the Tungsten carbite epithelium of thickness about 20 μm, then after carrying out degrease by alkali, be flood 6min in the manganese phosphate aqueous solution of 80 DEG C in temperature, thus on the outer circumferential face of piston ring body 1, form manganese phosphate epithelium, described leather diaphragm formation method is, by print process, teflon is coated on described second epithelium, described tungsten carbide coating hot spray process sprays, and then be finish-machined to above-mentioned shape.
Due to the setting of said structure, frictional force between piston ring and piston 4 can be reduced, and then slow down the generation of bonding phenomenon, namely leather diaphragm is made up of teflon, teflon has antiacid alkali resistant, the feature of anti-various organic solvent, be dissolved in all solvents hardly, simultaneously, teflon has resistant to elevated temperatures feature, its friction factor is extremely low, be widely used, optimal material as adherent layer, therefore, can by the initial stage and slip between ring groove surface and remove the projection of ring groove surface at short notice, significantly can not damage ring groove surface simultaneously.In piston ring, moving up and down of piston can make the upper and lower side knocking ring groove surface of piston ring with firing pressure, as shown in Figure 1, when piston down moves, there is knocking cunning and rub in upper side 401 and the antiadhesion barrier upper surface 201 of piston ring groove, when piston up moves, there is knocking cunning and rub in downside 402 and the antiadhesion barrier lower surface 202 of piston ring groove, two kinds of motions all can allow piston ring be subject to strong stress.But in piston ring of the present utility model, do not damage ring groove surface owing to removing the projection of ring groove surface in early days, therefore, the aggressiveness of ring groove surface to the antiadhesion barrier 2 of piston ring also reduces in early days.Further, antiadhesion barrier 2 makes and knocking between ring groove surface is sliding rubs caused stress and is relaxed, therefore poly-antiadhesion barrier is able to long term maintenance, can continue to maintain the excellent effect preventing adhering.The one side that piston ring body 1 contacts with cylinder 5 is arranged one deck wearing layer 3, namely wearing layer 3 contacts with cylinder inner wall 501, the wear resistance of piston ring can be improved on the one hand, on the other hand, the cause that wearing layer 3 is arranged to the first tongue and the second tongue is, because the outer circumferential face of the first tongue and the outer circumferential face of the second tongue are formed as drum respectively, therefore on the outer circumferential face of the first tongue and the outer circumferential face of the second tongue, have cylindrical center portion respectively.Therefore, be ensure that the sealing of piston ring by the cylindrical center portion of the first tongue or the second tongue, thus inhibit gas of combustion to pass to crank chamber side from combustion chamber side.Its result is, the durability of piston ring improves, and prevents and uprises in constant position surface of contact pressure, inhibit the uneven wear of piston ring, clutch release slave cylinder inner peripheral surface.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (2)
1. an internal-combustion engine vermicular cast iron piston ring, comprise piston ring body (1), it is characterized in that, the upper surface of described piston ring body (1), lower surface and be coated with one deck antiadhesion barrier (2) towards the one side of piston ring groove, the one side that piston ring body (1) contacts with cylinder is provided with one deck wearing layer (3), described antiadhesion barrier (2) comprises leather diaphragm and the second epithelium, described leather diaphragm covers on described second epithelium, described second epithelium covers in piston ring body (1), described wearing layer (3) extends to form the first tongue and the second tongue along the one side that piston ring body (1) contacts with cylinder, the outer circumferential face of described first tongue forms the drum bloated, and form opening portion in the one side that described piston ring body (1) contacts with cylinder (5), the outer circumferential face of described second tongue forms the drum bloated, and form opening portion in the one side that described piston ring body (1) contacts with cylinder (5), namely a gap (301) is formed at wearing layer (3) middle part.
2. internal-combustion engine vermicular cast iron piston ring as claimed in claim 1, it is characterized in that, described second epithelium is manganese phosphate epithelium, thickness is 5-10 μm, described leather diaphragm is teflon epithelium, thickness is 15-30 μm, described wearing layer (3) tungsten carbide coating, average thickness is 50-200 μm, described second epithelium formation method is, upper and lower side to piston ring body (1) and the one side towards piston ring groove carry out abrasive machining, this upper and lower side is made to become platform structure, then ion plating is carried out to the outer circumferential face of this piston ring, form the Tungsten carbite epithelium of thickness 20 μm, after carrying out degrease by alkali, be flood 6min in the manganese phosphate aqueous solution of 80 DEG C in temperature, thus on the outer circumferential face of piston ring body (1), form manganese phosphate epithelium, described leather diaphragm formation method is, by print process, teflon is coated on described second epithelium, described tungsten carbide coating hot spray process sprays, and then be finish-machined to above-mentioned shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520957731.5U CN205206978U (en) | 2015-11-26 | 2015-11-26 | Vermicular cast iron piston ring for internal -combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520957731.5U CN205206978U (en) | 2015-11-26 | 2015-11-26 | Vermicular cast iron piston ring for internal -combustion engine |
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| Publication Number | Publication Date |
|---|---|
| CN205206978U true CN205206978U (en) | 2016-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520957731.5U Expired - Fee Related CN205206978U (en) | 2015-11-26 | 2015-11-26 | Vermicular cast iron piston ring for internal -combustion engine |
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| CN (1) | CN205206978U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351107A (en) * | 2015-11-26 | 2016-02-24 | 成都九十度工业产品设计有限公司 | Vermicular graphite cast iron piston ring for internal combustion engine |
-
2015
- 2015-11-26 CN CN201520957731.5U patent/CN205206978U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351107A (en) * | 2015-11-26 | 2016-02-24 | 成都九十度工业产品设计有限公司 | Vermicular graphite cast iron piston ring for internal combustion engine |
| CN105351107B (en) * | 2015-11-26 | 2018-02-23 | 成都九十度工业产品设计有限公司 | Internal combustion engine vermicular cast iron piston ring |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20160504 Termination date: 20161126 |