CN1102210C - Enforced seal oil ring - Google Patents
Enforced seal oil ring Download PDFInfo
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- CN1102210C CN1102210C CN97109886A CN97109886A CN1102210C CN 1102210 C CN1102210 C CN 1102210C CN 97109886 A CN97109886 A CN 97109886A CN 97109886 A CN97109886 A CN 97109886A CN 1102210 C CN1102210 C CN 1102210C
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- ring
- basic ring
- boss
- scraping blade
- basic
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Abstract
The present invention relates to a piston ring, particularly to an oil ring installed on a piston of an internal combustion engine or an air pressure engine, which is a forced sealing oil ring in piston rings. The oil ring can eliminate leakage and oil pumping caused by a ring mouth and the axial jumping of the ring. The contact area of the outer circular surface of the ring and a cylinder sleeve is small, so that the frictional force can reduced, fuel oil and lubrication oil can be saved, and the service life of the piston ring is extended. The oil ring is characterized in that the oil ring is composed of a base ring and a scraping sheet, wherein a spring expansion ring is arranged on the inner circumferential surface of the base ring to form the forced sealing oil ring.
Description
Technical field
The present invention relates to a kind of seal oil ring, relate in particular to one forced sealing oil ring that is used on internal-combustion engine or the aerostatic press piston.
Background technique
At present, the oil ring in the piston ring that the reciprocating piston seal arrangement uses, can be divided into following several: a kind of is that cylindrical has a raised line face (promptly outer ladder) oil ring; Second kind is slotted oil control ring, i.e. two raised line face oil rings; The third is the steel disc combined oil ring, promptly scrapes loop and one lining spring by two and forms.More than the common drawback of three kinds of oil rings be, because of the wearing and tearing of ring periphery with the cylinder sleeve surface of contact, collar extension is just magnified at work, ring has axial runout in annular groove, thereby produces gas leakage and scurry oil, causes the shortening in working life of piston ring.
Summary of the invention
The purpose of this invention is to provide a kind of forced sealing oil ring,, prolong the working life of oil ring, and make ring and the minimizing of cylinder sleeve area of contact to separate that time existing oil ring collar extension is magnified and the axial runout that encircle and the gas leakage that produces and scurry oil.
The present invention is achieved in that its scheme is as follows:
The sealing oil ring comprises a basic ring that is provided with opening, be provided with circumferential ring expander in the basic ring inner circumferential surface, the external peripheral surface top of basic ring has the convex annular eaves (sliding shoulder) that radially outward protrudes, its upper surface inner circumference place is provided with axially annular boss protruding upward, the external peripheral surface outside at boss is provided with 1 or 2 scraping blades, each opening of described scraping blade and the opening of basic ring all stagger mutually, are provided with several draining holes on basic ring.
The sealing oil ring comprises a basic ring that is provided with opening, be provided with circumferential ring expander in the basic ring inner circumferential surface, the upper surface inner circumference place of basic ring is provided with axially annular boss protruding upward, the external peripheral surface outside at boss is provided with 2 scraping blades, two openings of described scraping blade stagger 180 ° mutually, are provided with several draining holes on basic ring.
The sealing oil ring comprises a basic ring that is provided with opening, be provided with circumferential ring expander in the basic ring inner circumferential surface, the upper surface inner circumference place of basic ring is provided with axially annular boss protruding upward, the external peripheral surface outside at boss is provided with 2 scraping blades, two openings of described scraping blade stagger 180 ° mutually, are provided with axial lining spring at the basic ring downside.
The sealing oil ring comprises a basic ring that is provided with opening, be provided with circumferential ring expander in the basic ring inner circumferential surface, the external peripheral surface top of basic ring has the convex annular eaves (sliding shoulder) that radially outward protrudes, its upper surface inner circumference place is provided with axially annular boss protruding upward, the external peripheral surface outside at boss is provided with 1 or 2 scraping blades, each opening of described scraping blade and the opening of basic ring all stagger mutually, be provided with the sliding shoulder of several sections in the compartment of terrain, external peripheral surface bottom of basic ring, be provided with axial lining spring at the basic ring downside.
The sealing oil ring comprises a basic ring that is provided with opening, basic ring upper surface inner circumference place has axially annular boss protruding upward, the external peripheral surface outside at boss is provided with 2 scraping blades, two openings of described scraping blade stagger 180 ° mutually, the top of described basic ring inner circumference is the cylndrical surface, excircle place, its underpart is provided with axially annular boss downwards, should axial inner circumferential surface be conical surface to lower convex platform, on inner circumference, also be provided with a step between this cylndrical surface and the conical surface, the angle α of described conical surface and horizontal plane is 30 °-80 °, is provided with the reinforcement ring with it in contact in the bottom of described conical surface.
Simple when consider making, described basic ring inner circumferential surface (or inner circumferential surface bottom) is a conical surface, the angle α of this conical surface and horizontal plane is 30 °-80 °, in the bottom of described conical surface, is provided with the reinforcement ring in contact.
Easy for installation for what encircle, be provided with the sliding shoulder of several sections in the compartment of terrain, external peripheral surface bottom of basic ring.
Described section sliding shoulder made for high-abrasive material not, and as aluminium, rubber, plastics etc., sliding shoulder of section and basic ring are for bonding together.
For the rotation opening that prevents scraping blade overlaps, describedly be made as two to sheet, it is 120 °-180 ° that these two scraping blade openings stagger mutually, be that local spot welding connection or part is bonding between these two scraping blades, makes two scraping blade aperture position relative fixed.
When being made as 1 to sheet, it is 180 ° that scraping blade opening and basic ring opening stagger mutually, and scraping blade and basic ring are that key is connected or local bonding, make scraping blade opening and basic ring aperture position relative fixed.
The scraping blade axial thickness of described setting equals the axial height of annular boss.
In order to prevent axially to serve as a contrast spring and reinforcement ring worn piston annular groove, below axially serving as a contrast spring or reinforcement ring, be provided with gasket ring.
Because seal oil ring of the present invention, on described basic ring, be provided with scraping blade, and the opening of the opening of this scraping blade and basic ring all staggers mutually, thereby guaranteed tight sealing, even the basic ring opening is owing to wearing and tearing become big, can not make yet and scurry the oil increase, because the distortion action of basic ring, or because of being provided with axial lining spring, or basic ring is conical surface and the effect that cooperates the axial thrust load that produces of reinforcement ring, thereby makes mandatory tight contact of seal oil ring upper side and piston ring groove upper side, and so not only seal oil ring axially can not beated, eliminated ring and in annular groove, beated, and had the function of sealing gas the wearing and tearing of annular groove.So seal oil ring of the present invention can be saved fuel oil and lubricant oil, and the operational safety and the durability of raising seal ring.
Description of drawings
Below in conjunction with accompanying drawing specific embodiments of the invention are described.
Fig. 1 is an embodiment's of forced sealing oil ring a schematic cross-section;
Fig. 2 is the schematic cross-section of another embodiment's forced sealing oil ring;
Fig. 3 is the schematic cross-section of another embodiment's forced sealing oil ring;
Fig. 4 is the schematic cross-section of another embodiment's forced sealing oil ring;
Fig. 5 is the schematic cross-section of another embodiment's forced sealing oil ring;
Fig. 6 is the schematic cross-section of another embodiment's forced sealing oil ring;
Fig. 7 is illustrated in compartment of terrain on the embodiment basis shown in Figure 1 to have increased one that the sliding shoulders of several sections [12] form and implement side;
Fig. 8 is illustrated in compartment of terrain on the embodiment basis shown in Figure 2 and has increased the embodiment that the sliding shoulders of several sections [12] form;
Fig. 9 is illustrated on the embodiment basis shown in Figure 3 with increased the embodiment that the sliding shoulders of several sections [12] form every ground;
Figure 10 is illustrated in compartment of terrain on the embodiment basis shown in Figure 5 and has increased the embodiment that the sliding shoulder of plurality of sections [12] forms;
Figure 11 is illustrated in compartment of terrain on the embodiment basis shown in Figure 6 and has increased the embodiment that the sliding shoulders of several sections [12] form;
Figure 12 is the part basic ring [3] in embodiment illustrated in fig. 7, and its compartment of terrain, external peripheral surface bottom is provided with the schematic cross-section of the sliding shoulders of several sections [12];
Figure 13 is that the F of Figure 12 is to local diagrammatic sketch;
Figure 14 is illustrated in increases the embodiment that gasket ring forms on the embodiment basis shown in Figure 3;
Figure 15 is illustrated in increases the embodiment that gasket ring forms on the embodiment basis shown in Figure 4;
Figure 16 is illustrated in increases the embodiment that gasket ring forms on the embodiment basis shown in Figure 5;
Figure 17 is illustrated in increases the embodiment that gasket ring forms on the embodiment basis shown in Figure 6;
Figure 18 is illustrated on the embodiment basis shown in Figure 1, only is the situation that the external peripheral surface of boss [2] is the embodiment that frusto-conical face forms;
Figure 19 is illustrated on the embodiment basis shown in Figure 2, only is the situation that the external peripheral surface of boss [2] is the embodiment that frusto-conical face forms;
Figure 20 is the situation that the external peripheral surface of its boss of part basic ring [3] [2] among Fig. 1 is frusto-conical face;
Figure 21 is the situation that the external peripheral surface of its boss of part basic ring [3] [2] among Fig. 2 is frusto-conical face;
Figure 22 is the situation that the external peripheral surface of its boss of part basic ring [3] [2] among Fig. 3 is frusto-conical face;
Figure 23 is the situation that the external peripheral surface of its boss of part basic ring [3] [2] among Fig. 4 is frusto-conical face;
Figure 24 is the situation that the external peripheral surface of its boss of part basic ring [3] [2] among Fig. 5 is frusto-conical face;
Figure 25 is illustrated on the embodiment basis shown in Figure 1, and only being does not have boss [2], do not have scraping blade [1] and an embodiment forming on the basic ring [3];
Figure 26 is illustrated on the embodiment basis shown in Figure 4, and only being does not have boss [2] and section to slide shoulder [12], do not establish scraping blade [1] and an embodiment of formation on the basic ring [3];
Figure 27 is the plan view that axially serves as a contrast spring [11];
Figure 28 is the A-A generalized section of Figure 27.
Embodiment
As shown in Figure 1, according to seal oil ring of the present invention, comprise a basic ring [3] that is provided with opening, top shown in basic ring [3] the external peripheral surface figure, have the convex annular eaves [6] with the concentric setting of described basic ring, the upper surface inner circumference place at basic ring [3] is provided with an annular boss that axially makes progress [2], boss [2] is concordant with the inner circumferential surface of basic ring [3] with the coaxial setting of basic ring [3] and its inner circumferential surface, and described protruding eaves [6] and boss [2] are one with basic ring [3].External peripheral surface at boss [2] is provided with a scraping blade [1], and the axial thickness of this scraping blade equals the axial height of boss [2], and its internal diameter equates that with the external diameter of boss [2] its external diameter then equates with the external diameter of protruding eaves [6].Basic ring shown in the figure [3] is the flexible annulus that opening is arranged, and this is identical with prior art.Opening on scraping blade [1] and the basic ring [3] is set like this according to the present invention, promptly staggers 120 °-180 ° mutually on circumference, 180 ° of (not shown)s preferably stagger.This setting type is the same in following example, therefore will this not given unnecessary details below.
Being provided with a cross section at the middle part of basic ring [3] inner circumferential surface is semicircular groove, and this groove is used to hold circumferential ring expander [4], and is provided with draining hole [5] on basic ring [3], and this structure is with of the prior art identical.
Described circumferential ring expander [4] can be the helical spring packing, and promptly spiral serves as a contrast spring etc.Described scraping blade is the opening annulus, and its cross section is a rectangular, and this is identical with prior art.
Fig. 2 has represented according to the present invention another embodiment of seal oil ring, wherein the draining hole [5] on circumferential ring expander [4], scraping blade [1], basic ring [3] and the basic ring [3] among the setting of the draining hole [5] on circumferential ring expander [4], scraping blade [1], basic ring [3] and the basic ring [3], boss [2] and Fig. 1, boss [2] be provided with identical.But different parts are, do not have protruding eaves [6] on the external peripheral surface top of basic ring [3], and have set up a slice scraping blade in the external peripheral surface outside of boss [2] more, and scraping blade [1] becomes two.It is 180 ° of (not shown)s that these two scraping blade openings stagger mutually, and the part of the excircle radial dimension of scraping blade [1] promptly becomes protruding eaves (sliding shoulder), and the axial thickness of scraping blade [1] equals the axial height of boss [2].
Fig. 3 has represented according to the present invention another embodiment of seal oil ring, wherein the boss [2] on circumferential ring expander [4], scraping blade [1], basic ring [3] and the basic ring [3] among the setting of the boss [2] on circumferential ring expander [4], scraping blade [1], basic ring [3] and the basic ring [3] and Fig. 2 be provided with identical.But different parts are not have draining hole [5] on the basic ring [3], and increased an axially lining spring [11] at basic ring [3] lower surface.Axially the structure of lining spring is seen Figure 27 and Figure 28, and Figure 28 is the A-A generalized section of Figure 27, and its material can be made with spring steel plate.Axially lining spring [11] be about the opening annulus of corrugated upper and lower surface symmetry.This road seal oil ring is in being installed to piston ring groove the time, axially the upper surface of lining spring [11] contacts with the lower surface of basic ring [3], its lower surface contacts with the downside of piston ring groove, axially lining spring [11] axially is compressed distortion when mounted, form axial elastic force, all the time make the tight contact seal of upper side of the upper side and the piston ring groove of seal oil ring, axially serve as a contrast spring [11] and have the effect of letting out grease channel simultaneously.
Fig. 4 has represented according to the present invention another embodiment of seal oil ring, wherein the boss [2] on circumferential ring expander [4], scraping blade [1] basic ring [3] and the basic ring [3] among the setting of the boss [2] on circumferential ring expander [4], scraping blade [1], basic ring [3] and the basic ring [3], protruding eaves [6] and Fig. 1, protruding eaves [6] be provided with identical.But different parts are, compartment of terrain, bottom shown in the external peripheral surface figure of the basic ring among Fig. 4 [3] is provided with the sliding shoulders of several sections [12], and (the sliding shoulder of section is the sliding shoulder of certain arc length, the layout of the sliding shoulder of section is seen shown in Figure 13), the excircle of the sliding shoulder of section [12] equates with the excircle radius of protruding eaves [6].In addition, do not have draining hole [5] on the basic ring [3], and increased an axially lining spring [11], axially serve as a contrast the structure and the setting of spring [11], with the structure shown in Fig. 3 be provided with identical at basic ring [3] lower surface.
Fig. 5 has represented according to the present invention another embodiment of seal oil ring, wherein the boss [2] on scraping blade [1], basic ring [3] and the basic ring [3] among the setting of the boss [2] on scraping blade [1] basic ring [3] and the basic ring [3] and Fig. 3 be provided with identical.But different parts are, basic ring [3] inner circumferential surface and lower surface change to some extent, be that its inner circumference top is the cylndrical surface, excircle place, its underpart is provided with axially downward annular boss [10], described boss [10] is an one with basic ring [3], the inner circumferential surface of boss [10] is conical surface [8], described conical surface [8] is 30 °-80 ° with the angle α of horizontal plane, bottom at described conical surface [8] is provided with reinforcement ring [9] with it in contact, described reinforcement ring [9] can be the helical spring packing in the circumferential ring expander [4], and this is identical with prior art.Boss [2] interior gone up such chamfering that the circumference place can be as shown in the figure, so that install, described chamfering then can be set according to needs are installed.
Shown in Figure 6 is according to another embodiment of the invention seal oil ring schematic cross-section.Wherein the boss [2] on scraping blade [1], basic ring [3] and the basic ring [3] among the setting of the boss [2] on scraping blade [1], basic ring [3] and the basic ring and Fig. 5 be provided with identical, described basic ring [3] inner circumferential surface top is all the cylndrical surface mutually with basic ring [3] inner circumferential surface top among Fig. 5, it does not exist together is that its inner circumference bottom is a conical surface [8], described conical surface [8] is 30 °～80 ° with the angle α of horizontal plane, is provided with reinforcement ring [9] with it in contact in the bottom of described conical surface [8].Under the situation that piston ring groove is fit to, make simpler like this.
The embodiment that Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11 represent respectively is on Fig. 1, Fig. 2, Fig. 3, Fig. 5, each embodiment's shown in Figure 6 basis, just be provided with the sliding shoulders of several sections [12] in the compartment of terrain, bottom shown in each basic ring [3] external peripheral surface or boss [10] the external peripheral surface figure, the excircle of the sliding shoulder of section and protruding eaves and equate that to the excircle radius of sheet the sliding shoulder of section [12] is that sliding of certain arc length (section arc length) takeed on.The concrete layout of the sliding shoulder of section [12] is seen Figure 13, and Figure 13 is that the F of Figure 12 is to partial view.The sliding shoulder of section has been arranged in the compartment of terrain among Figure 13, and its purpose is to reduce under the situation of ring and cylinder sleeve area of contact as far as possible, the installation that helps encircling.
The embodiment that Figure 14, Figure 15, Figure 16, Figure 17 represent has respectively only increased gasket ring [7] on Fig. 3, Fig. 4, Fig. 5, embodiment basis shown in Figure 6, self-evident, this ring also is the annulus that opening is arranged, its cross section is a rectangular, and this ring can avoid axially serving as a contrast spring [11] and the direct worn piston annular groove of reinforcement ring [9].
Figure 18, Figure 19 are illustrated among the embodiment illustrated in figures 1 and 2, only are that the external peripheral surface of boss [2] is frusto-conical face, and the embodiment who forms.
Figure 20, Figure 21, Figure 22, Figure 23, Figure 24 have represented respectively in Fig. 1, Fig. 2, Fig. 3, Fig. 4, embodiment shown in Figure 5, each basic ring [3] is gone up set annular boss [2] external peripheral surface axial protruding upward and is frusto-conical face, the oblique angle of described frusto-conical face is β, and β can be 8 °～16 ° angles.
The embodiment that Figure 25 represents is in the embodiment shown in fig. 1, only is that basic ring [3] upper surface does not have boss [2] and do not establish scraping blade [1], and an embodiment who forms.This mainly is to consider that manufacturing is easy.
The embodiment that Figure 26 represents is in the embodiment shown in fig. 4, only is that basic ring [3] upper surface does not have boss [2] and do not establish scraping blade [1], the sliding shoulder of the external peripheral surface bottom section of not having of described basic ring [3], and an embodiment who forms.This mainly is to consider that manufacturing is easy.
Those of ordinary skill in the art; all can be on the basis that does not exceed the application's protection domain that claim limits; the present invention is made other variation and modification; above according to a particular embodiment of the invention to description that the present invention did; do not constitute limitation of the invention, and only be used to describe the present invention.
Claims (13)
1, a kind of forced sealing oil ring, comprise a basic ring [3] that is provided with opening, be provided with circumferential ring expander [4] in basic ring [3] inner circumferential surface, the external peripheral surface top of basic ring [3] has the convex annular eaves [6] that radially outward protrudes, it is characterized in that: basic ring [3] upper surface inner circumference place is provided with axially annular boss [2] protruding upward, the external peripheral surface outside at boss [2] is provided with 1 or 2 scraping blades [1], the opening of each opening of described scraping blade [1] and basic ring [3] all staggers mutually, is provided with several draining holes [5] on basic ring [3].
2, a kind of forced sealing oil ring, comprise a basic ring [3] that is provided with opening, be provided with circumferential ring expander [4] in basic ring [3] inner circumferential surface, it is characterized in that: the upper surface inner circumference place of basic ring [3] is provided with axially annular boss [2] protruding upward, the external peripheral surface outside at boss [2] is provided with 2 scraping blades [1], two openings of described scraping blade [1] stagger 180 ° mutually, are provided with several draining holes [5] on basic ring [3].
3, a kind of forced sealing oil ring, comprise a basic ring [3] that is provided with opening, be provided with circumferential ring expander [4] in basic ring [3] inner circumferential surface, it is characterized in that: the upper surface inner circumference place of basic ring [3] is provided with axially annular boss [2] protruding upward, the external peripheral surface outside at boss [2] is provided with 2 scraping blades [1], two openings of described scraping blade [1] stagger 180 ° mutually, are provided with axial lining spring [11] at basic ring [3] downside.
4, a kind of forced sealing oil ring, comprise a basic ring [3] that is provided with opening, be provided with circumferential ring expander [4] in basic ring [3] inner circumferential surface, the external peripheral surface top of basic ring [3] has the convex annular eaves [6] that radially outward protrudes, it is characterized in that: basic ring [3] upper surface inner circumference place is provided with axially annular boss [2] protruding upward, the external peripheral surface outside at boss [2] is provided with 1 or 2 scraping blades [1], the opening of each opening of described scraping blade [1] and basic ring [3] all staggers mutually, be provided with the sliding shoulders of several sections [12] in the compartment of terrain, external peripheral surface bottom of basic ring [3], be provided with axial lining spring [11] at basic ring [3] downside.
5, a kind of forced sealing oil ring, comprise a basic ring [3] that is provided with opening, it is characterized in that: the upper surface inner circumference place of basic ring [3] has axially annular boss [2] protruding upward, the external peripheral surface outside at boss [2] is provided with 2 scraping blades [1], two openings of described scraping blade [1] stagger 180 ° mutually, the top of described basic ring [3] inner circumference is the cylndrical surface, excircle place, its underpart is provided with axially annular boss [10] downwards, this is conical surface [8] to the inner circumferential surface of lower convex platform [10] axially, on inner circumference, also be provided with a step between this cylndrical surface and the conical surface, the angle α of described conical surface and horizontal plane is 30 °-80 °, is provided with reinforcement ring [9] with it in contact in the bottom of described conical surface.
6, a kind of forced sealing oil ring, comprise a basic ring [3] that is provided with opening, it is characterized in that: the upper surface inner circumference place of basic ring [3] has axially annular boss [2] protruding upward, the external peripheral surface outside at boss [2] is provided with two scraping blades [1], two openings of described scraping blade [1] stagger 180 ° mutually, the top of described basic ring [3] inner circumference is the cylndrical surface, basic ring [3] inner circumferential surface bottom is conical surface [8], this conical surface [8] is 30 °-80 ° with the angle α of horizontal plane, is provided with reinforcement ring [9] in contact in the bottom of described conical surface [8].
7, according to the seal oil ring described in the claim 1,2,3,5 or 6, it is characterized in that: be provided with the sliding shoulders of several sections [12] in the compartment of terrain, external peripheral surface bottom of basic ring [3].
8, according to the seal oil ring described in the claim 7, it is characterized in that: the sliding shoulder of section [12] is made for high-abrasive material not, and sliding shoulder of section [12] and basic ring [3] are for bonding together.
9, according to claim 1 or 4 described seal oil rings, it is characterized in that: described scraping blade [1] is made as two, and it is 120 °-180 ° that these two scraping blade openings stagger mutually, between these two scraping blades [1], bonding for the spot welding connection or the part of part, make two scraping blade aperture position relative fixed.
10, according to claim 1 or 4 described seal oil rings, it is characterized in that: when scraping blade [1] when being made as a slice, it is 180 ° that scraping blade [1] and basic ring [3] opening stagger mutually, scraping blade [1] and basic ring be key be connected or the part bonding, make scraping blade opening and basic ring aperture position relative fixed.
11, according to claim 2,3 or 5 described seal oil rings, it is characterized in that: for local spot welding connection or local bonding, make two scraping blades [1] aperture position relative fixed between these two scraping blades [1].
12, according to the seal oil ring described in the claim 3,4,5 or 6, it is characterized in that: below axially serving as a contrast spring [11] or reinforcement ring [9], be provided with gasket ring [7].
13, according to the seal oil ring described in the claim 1,2,3,4 or 5, it is characterized in that: the external peripheral surface of described annular boss [2] axially protruding upward is frusto-conical face, described circular cone and oblique angle β be 8 ° of-16 ° of angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97109886A CN1102210C (en) | 1997-02-18 | 1997-05-23 | Enforced seal oil ring |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97210968.4 | 1997-02-18 | ||
| CN97210968 | 1997-02-18 | ||
| CN97109886A CN1102210C (en) | 1997-02-18 | 1997-05-23 | Enforced seal oil ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1191285A CN1191285A (en) | 1998-08-26 |
| CN1102210C true CN1102210C (en) | 2003-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97109886A Expired - Fee Related CN1102210C (en) | 1997-02-18 | 1997-05-23 | Enforced seal oil ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1102210C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10340312A1 (en) * | 2003-09-02 | 2005-05-12 | Mahle Gmbh | Multi-piece oil scraper ring for pistons of internal combustion engines |
| CN113775736B (en) * | 2021-09-06 | 2024-02-09 | 上海涟屹轴承科技有限公司 | Oil distribution ring and gear box oil distribution system thereof |
| CN114352433A (en) * | 2022-01-06 | 2022-04-15 | 马勒汽车技术（中国）有限公司 | A double-edged positive twisted oil ring assembly |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4214762A (en) * | 1978-08-03 | 1980-07-29 | Ramsey Corporation | Rolled metal piston ring |
| EP0544495A1 (en) * | 1991-11-27 | 1993-06-02 | Hoechst Celanese Corporation | Improved azo pigment compositions and process for their preparation |
| JPH0842693A (en) * | 1994-07-27 | 1996-02-16 | Mitsubishi Motors Corp | Oil ring |
| JPH08159282A (en) * | 1994-12-05 | 1996-06-21 | Riken Corp | Oil control ring for internal combustion engine |
-
1997
- 1997-05-23 CN CN97109886A patent/CN1102210C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4214762A (en) * | 1978-08-03 | 1980-07-29 | Ramsey Corporation | Rolled metal piston ring |
| EP0544495A1 (en) * | 1991-11-27 | 1993-06-02 | Hoechst Celanese Corporation | Improved azo pigment compositions and process for their preparation |
| JPH0842693A (en) * | 1994-07-27 | 1996-02-16 | Mitsubishi Motors Corp | Oil ring |
| JPH08159282A (en) * | 1994-12-05 | 1996-06-21 | Riken Corp | Oil control ring for internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1191285A (en) | 1998-08-26 |
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