WO2004074717A1 - 組合せオイルリング - Google Patents
組合せオイルリング Download PDFInfo
- Publication number
- WO2004074717A1 WO2004074717A1 PCT/JP2004/001853 JP2004001853W WO2004074717A1 WO 2004074717 A1 WO2004074717 A1 WO 2004074717A1 JP 2004001853 W JP2004001853 W JP 2004001853W WO 2004074717 A1 WO2004074717 A1 WO 2004074717A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- oil ring
- main body
- inner peripheral
- combination oil
- groove
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
- F16J9/06—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction using separate springs or elastic elements expanding the rings; Springs therefor ; Expansion by wedging
- F16J9/061—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction using separate springs or elastic elements expanding the rings; Springs therefor ; Expansion by wedging using metallic coiled or blade springs
- F16J9/062—Coiled spring along the entire circumference
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
- F16J9/06—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction using separate springs or elastic elements expanding the rings; Springs therefor ; Expansion by wedging
-
- 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
- F02F5/00—Piston rings, e.g. associated with piston crown
Definitions
- the present invention relates to a combined oil ring mounted on a piston of an internal combustion engine.
- a combined oil ring having a substantially M-shaped cross section in which an upper and lower rail having an outer peripheral surface that slides on the inner peripheral surface of a cylinder, and a web that connects the upper and lower rails and has a plurality of windows is integrated is disclosed in, for example, This is described in Japanese Patent Application Laid-Open No. 45172/1994 and Japanese Patent Application Laid-Open No. Hei 9-144444 / 81.
- the combined oil ring is composed of an oil ring main body 1 and a coil expander 2, as shown in FIG.
- the oil ring body 1 is an oil ring composed of upper and lower rails 3 and 4 and a web 5 connecting the rails and having a substantially M-shaped cross section in the radial direction. This combined oil ring is installed in the oil ring groove 21 of the piston 20.
- the outer peripheral projections 6 and 7 of the upper and lower rails have a substantially trapezoidal cross-section composed of the outer peripheral sliding surfaces 8 and 9 that come into contact with the cylinder wall 22 and the upper and lower inclined surfaces 10 and 11 connected to the outer peripheral sliding surfaces 8 and 9. I have.
- the side surfaces 12 and 13 of the upper and lower rails 3 and 4 are opposed to the upper and lower surfaces 23 and 24 of the piston groove.
- the combined oil ring is inserted into the ring body through a window 25 through which a large amount of lubricating oil with the rail sliding surfaces 8 and 9 in contact with the rails 5 from the outer circumferential groove 14 surrounded by the upper and lower rails 3 and 4 and the web 5 It is possible to move to the peripheral side.
- the lubricating oil that has moved from the window 25 to the inner peripheral side 17 of the ring groove is returned to the oil pan through the oil hole of the biston 20.
- the inner peripheral portions 18 and 19 of the inner peripheral projections 15 and 16 of the upper and lower rails 3 and 4 have an arc shape, and the inner peripheral projections 15 and 16 and The inner circumferential groove 17 is formed with the web 5.
- the coil expander 2 is housed in the inner peripheral groove 17, and the oil expander 2 comes into contact with the inner peripheral grooves 18, 19 of the oil ring main body 1, so that the oil ring main body 1 comes into contact with the cylinder wall. It is energized to 2 2.
- the shape of the inner projections 15 and 16 of the upper and lower rails 3 and 4 may be substantially trapezoidal in cross section.
- the inner circumferential groove 17 is formed by the inner circumferential side projections 15 and 16 and the web 5 as shown in FIG.
- the maximum dimension L 2 in the axial direction is determined by the dimension between the radially inner edges 27 28 ′ of the inner circumferential groove 17.
- the inner diameter of the combined oil ring becomes larger than the piston diameter.
- the coil expander 2 may fall off from the inner circumference of the main unit. If the coil expander 2 falls off from the inner circumference of the main body 1, it is necessary to start over from assembling the coil expander 2 and the main body 1 again.
- the present invention has been made based on the above circumstances, and in a combined oil ring, the coil expander is detached from the oil ring main body when mounted on a piston without losing the function of the oil ring or the like as an oil ring.
- the problem to be solved is to provide a combination oil ring that does not drop.
- a combined oil ring including an upper and lower rails 3 and 4 and a thin web 5 connecting the upper and lower rails and a coil expander 2.
- a protrusion is provided on the radially inner circumferential side from the position where the axial dimension of the side groove portion is maximum, and the protrusion is directed toward the center line in the thickness direction. This prevents the coil expander 2 assembled in the oil ring body 1 from dropping off the oil ring 1 when the oil ring is attached to the piston by opening the mouth of the oil ring body 1. .
- the axial dimension of the oil ring main body inner circumferential groove portion smaller on the radial inner circumferential side than the position where the oil ring main body becomes the maximum, it is possible to prevent the coil expander from falling off when mounted on the piston.
- L 1 and L 2 satisfy 0 ⁇ 0 3 ⁇ (L 2-L 1) / L 1 ⁇ 0.15, and 0.05 ⁇ (L 2-L 1) L 1 ⁇ More preferably, it is 0.10.
- L1 means the minimum dimension and L2 means the maximum dimension. If the (L 2-L 1) / L 1 force is smaller than SO.03, the effect of preventing the coil expander from falling off is not remarkably recognized, and if (L 2-L 1) ZL 1 exceeds 0.15 Difficulty inserting coil expander into oil ring body Become.
- the coil diameter d of the combined coil expander and L1 of the oil ring main body satisfy 0.2 nmi ⁇ L1-d ⁇ -0.10mm.
- the oil ring main body does not leave deformation distortion due to the force applied when the inner peripheral end of the oil ring is opened in the axial direction, and the oil ring is attached to the piston. It is difficult for the coil to fall off from the oil ring body when the abutment of the oil ring body is widened in the circumferential direction during installation.
- FIG. 1 is a radial sectional view of a combined oil ring showing an example of the present invention.
- FIG. 2 is a radial sectional view of a combined oil ring showing another example of the present invention.
- FIG. 3 is a radial sectional view of a combined oil ring showing another example of the present invention.
- FIG. 4 is a radial sectional view showing an example of a conventional oil ring.
- FIG. 5 is a radial sectional view showing another two examples of the conventional oil ring.
- FIGS. 4 and 5 A preferred embodiment of the present invention will be described in detail with reference to FIGS. Of the components of this embodiment, the description of the components common to the conventional example shown in FIGS. 4 and 5 is omitted. The reference numbers used in Figs. 4 and 5 are assigned to some of the common parts.
- the thickness of the oil ring body is L3, and the inner peripheral portions 18, 19 of the inner peripheral projections 15, 16, 16 of the upper and lower rails 3, 4 are arc-shaped.
- the storage groove 26 of the coil expander 2 is formed.
- the inner circumferential groove 26 draws a circular arc vertically and symmetrically from the intersection A1 with the center line in the thickness direction (the line passing through the center of the width of the oil ring main body) AA 'inward in the radial direction. Is increased, and the maximum value L 2 is reached at BB '.
- BB further inward in the radial direction, are provided projections 27 and 28 toward the center line AA 'in the thickness direction.
- the protrusion prevents the coil expander from falling off when the oil ring is attached to the piston.
- the protrusions 27 and 28 are provided at the opening edge of the inner peripheral groove, and the axial dimension at the opening edge is the minimum value L1 radially inward from BB '. . However, if it is more radially inward than B B ′, a protrusion is formed, and the position of L 1 is not limited to the opening edge.
- the maximum axial dimension i.e., the axial distance between B, the upper end of L2, and the lower end of the upper protrusion 27, and B ', the lower end of L2, and the upper end of the lower protrusion 28 Let ⁇ L 1 and ⁇ L 2 respectively.
- the protrusions are formed symmetrically above and below the oil ring main body groove, and A L1 and M L
- the protruding portions 27 and 28 have a substantially triangular cross section, but the shape is not particularly limited. Further, in the figure, the tip of the protruding portion has an acute angle, but a flat portion or a round portion may be provided for manufacturing reasons and preventing breakage.
- the projecting portion may be formed on the entire circumference of the ring, but the effect of preventing the coil expander from falling off can be obtained by partially forming the projecting portion. However, in the case of partial formation, it is necessary to take care that the variation in the surface pressure of the oil ring does not become too large.
- the groove 26 is formed by vertically inclined surfaces 18 and 19 and a vertical surface 30 connecting them.
- the upper and lower grooves are slightly arcuate from the outside of BB ', which has the maximum width in the axial direction, and the arc is independent of the outer side even inside BB.
- Protrusions 27 and 28 having a substantially triangular cross section are provided at the opening edge as in FIG. This shape Even in the case of the oil ring main body, the protruding portion is formed, and the position of L1 is not necessarily the opening edge.
- the arc surface formed in FIG. 2 does not necessarily need to be formed, and may have a shape in which a protruding portion is formed directly from the inclined surfaces 18 and 19. However, it is preferable that the protrusion be formed more gently in order to obtain the effect of preventing falling off without causing any obstacles to the work when the coil expander is installed. It is desirable to form.
- the configuration in FIG. 3 is the same as the configuration in FIG. 1 except that a protrusion 28 is provided only at the lower portion of the inner peripheral groove portion and no protrusion is provided at the upper portion. Since the coil expander usually falls down, the effect of preventing the coil expander from falling off can be obtained even with a configuration in which the protrusion 28 is provided only at the lower portion.
- the projection is formed only at the lower part in the figure, but there is usually no distinction between the upper and lower parts in the actual oil ring main body, and it is sufficient to mount the oil ring body with the side with the projection formed on the lower side.
- a L 1> A L 2 or A L 1 and A L 2 can be used.
- the lower protrusion 28 is made larger than the upper protrusion, that is, ⁇ L ⁇ L2 is effective for preventing the coil expander from falling off.
- the up and down correspond to the up and down at the time of mounting.
- the effect of preventing the coil expander from falling off can be obtained.
- the effect of preventing the coil expander from falling off is further improved by extending the radial width and providing the protrusion in the inner circumferential groove.
- An oil ring main body shown in FIG. 1 was manufactured by winding a martensitic stainless steel wire having a deformed cross section shown in FIG. 1 so as to have a pore diameter.
- the projections 27, 28 are formed so that L1 shown in Table 1 at the opening edge is obtained.
- a vertically symmetric oil ring body was manufactured.
- An oil ring shown in FIG. 4 was produced in the same manner as in Example 1.
- the tension was Ft 10 N
- the ring nominal diameter was 7.5 Omm
- the ring thickness in the radial direction was 1.5 mm
- the axial width was 1.5 mm.
- a test was conducted to confirm that the coil expander did not fall off from the main unit when the two-piece oil ring was mounted on the piston, and that it could be mounted smoothly.
- After assembling the oil ring main unit and coil expander use a ring opening jig to widen the oil ring main unit to 11 times the radial thickness of the oil ring main body to 1.5 times and 16.5 mm to the piston.
- Oil ring groove Attach to It was determined whether or not the coil expander could be installed in the piston ring groove without detaching from the main unit when expanding the abutment of the main unit. The test was performed for each ring specification, 100 pieces at a time, and the number of pieces that dropped off during installation was examined. Table 1 shows the results.
- Coil diameter (1 1.06 Omm coil A test for confirming the attachment to the piston was performed in the same manner as in Example 1 with the combination of the kispanda so that 2 was on the lower side. As a result, no combined oil ring from which coil expanders were dropped out of 100 pieces was recognized.
- An oil ring main body shown in FIG. 3 was produced in the same manner as in Example 1.
- Example 2 tension Ft10N, ring nominal diameter 75.0 mm, ring body thickness in the radial direction 1.5 mm, axial width 1.5 mm, and the opening edge L 1 shown in Table 2
- An oil ring body was fabricated in which the projections 27 and 28 were formed symmetrically in the vertical direction.
- a test for confirming attachment to a piston was performed by combining the obtained oil ring main body with a coil expander having a coil diameter of 1.055 mm. Table 2 shows the obtained results. When L 1-d was reduced to about 0.3 mm, the effect of preventing the coil expander from falling off was remarkably observed.
- An oil ring main body shown in FIG. 1 was produced in the same manner as in Example 1. However, here, the tip of the opening edge is extended only inward in the radial direction, the width in the radial direction is 1.575 mm, which is 5% thicker than L3 (1.5 mm), and is vertically symmetrical with the opening edge.
- An oil ring main body having a protruding portion formed thereon and L1 being 1.062 mm was produced.
- an oil ring body having a radial width of 1-575 mm and no protrusion was also manufactured (Comparative Example 2).
- the inner peripheral surfaces 18 and 19, which are the contact portions with the coil expander 2 are arc-shaped.
- the inner peripheral surfaces 18 and 19 of the coil contact portions are tapered. The same effect can be obtained when it is in the shape of a circle (see Fig. 2).
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04712672A EP1596106B1 (en) | 2003-02-20 | 2004-02-19 | Combination oil control ring |
JP2005502752A JPWO2004074717A1 (ja) | 2003-02-20 | 2004-02-19 | 組合せオイルリング |
DE602004020592T DE602004020592D1 (de) | 2003-02-20 | 2004-02-19 | Kombinierter ölabstreifring |
US10/536,559 US7306233B2 (en) | 2003-02-20 | 2004-02-19 | Combined oil control ring |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-42515 | 2003-02-20 | ||
JP2003042515 | 2003-02-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004074717A1 true WO2004074717A1 (ja) | 2004-09-02 |
Family
ID=32905352
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/001853 WO2004074717A1 (ja) | 2003-02-20 | 2004-02-19 | 組合せオイルリング |
Country Status (8)
Country | Link |
---|---|
US (1) | US7306233B2 (ja) |
EP (1) | EP1596106B1 (ja) |
JP (1) | JPWO2004074717A1 (ja) |
KR (1) | KR100669357B1 (ja) |
CN (1) | CN100561021C (ja) |
DE (1) | DE602004020592D1 (ja) |
TW (1) | TWI238233B (ja) |
WO (1) | WO2004074717A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008169882A (ja) * | 2007-01-10 | 2008-07-24 | Toyota Motor Corp | 2ピース型のピストンリング |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070262533A1 (en) * | 2006-05-15 | 2007-11-15 | Wan-Chieh Lu | Scraper ring |
JP5557562B2 (ja) * | 2010-03-10 | 2014-07-23 | Tpr株式会社 | 組合せオイルリング |
CN102859241B (zh) * | 2010-04-19 | 2015-07-15 | 日本活塞环株式会社 | 内燃机用油环 |
JP5587285B2 (ja) | 2011-12-21 | 2014-09-10 | Tpr株式会社 | 組合せオイルリング |
WO2014052290A1 (en) * | 2012-09-28 | 2014-04-03 | Meacham G B Kirby | Reduced friction oil control piston rings |
JP5980966B2 (ja) * | 2015-01-09 | 2016-08-31 | 株式会社リケン | 組合せオイルコントロールリング |
JP6530200B2 (ja) * | 2015-02-23 | 2019-06-12 | 株式会社リケン | サイドレール |
US10520085B2 (en) * | 2015-03-31 | 2019-12-31 | Nippon Piston Ring Co., Ltd. | Combined oil ring |
DE102016110105B4 (de) * | 2016-06-01 | 2018-08-02 | Federal-Mogul Burscheid Gmbh | Kompressions-Ölabstreif-Kolbenring |
CN109844379B (zh) * | 2017-09-29 | 2020-05-15 | 帝伯爱尔株式会社 | 刮片环、组合油环以及刮片环的制造方法 |
JP6389970B1 (ja) * | 2018-01-16 | 2018-09-12 | Tpr株式会社 | 組合せオイルリング |
DE102018114113A1 (de) * | 2018-06-13 | 2019-12-19 | Scherdel Innotec Forschungs- Und Entwicklungs-Gmbh | Ölabstreifring und Zylinderkolben mit einer Ölringnut und einem Ölabstreifring |
DE102019110583B4 (de) * | 2019-04-24 | 2021-12-23 | Federal-Mogul Dresden, ZN der FMVV GmbH mit Sitz in Burscheid | Zweiteiliger Ölabstreifring mit vorteilhafter Geometrie |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1125031A (en) | 1966-01-27 | 1968-08-28 | Emile Raymond Rene Greifenstei | A device for exerting a radially directed thrust for piston rings |
JPS4510482Y1 (ja) * | 1969-08-27 | 1970-05-14 | ||
FR2183433A5 (ja) | 1972-02-05 | 1973-12-14 | Braun Ag | |
JPS6069350U (ja) * | 1983-10-20 | 1985-05-16 | いすゞ自動車株式会社 | オイルリング |
JPH0338456U (ja) * | 1989-08-24 | 1991-04-15 | ||
JPH08200500A (ja) * | 1995-01-27 | 1996-08-06 | Nissan Motor Co Ltd | 組合せオイルリング |
JP2003287128A (ja) * | 2002-03-29 | 2003-10-10 | Nippon Piston Ring Co Ltd | 2ピース型組合せオイルリング |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2087208A (en) * | 1934-01-17 | 1937-07-13 | William K Frielingsdorf | Piston ring |
US2445090A (en) * | 1947-01-09 | 1948-07-13 | Perfect Circle Corp | Piston ring |
GB1084389A (en) * | 1964-12-29 | 1967-09-20 | Rene Edmond Richard | Piston rings |
FR1474049A (fr) * | 1966-01-27 | 1967-03-24 | Dispositif exerçant une poussée radiale pour segments de pistons | |
FR2183443A5 (ja) * | 1971-11-30 | 1973-12-14 | Wellworthy Ltd | |
JPS5966063U (ja) | 1982-10-26 | 1984-05-02 | 帝国ピストリング株式会社 | コイルエキスパンダ付オイルリング |
US5265890A (en) * | 1990-12-03 | 1993-11-30 | Peter J. Balsells | Seal with spring energizer |
JP3266468B2 (ja) | 1995-07-27 | 2002-03-18 | 帝国ピストンリング株式会社 | 組合せオイルリングおよびそれとピストンとの組合せ |
JPH09144881A (ja) | 1995-11-21 | 1997-06-03 | Teikoku Piston Ring Co Ltd | 組合せオイルリング |
-
2004
- 2004-02-18 TW TW093103926A patent/TWI238233B/zh not_active IP Right Cessation
- 2004-02-19 KR KR1020057010370A patent/KR100669357B1/ko not_active IP Right Cessation
- 2004-02-19 DE DE602004020592T patent/DE602004020592D1/de not_active Expired - Lifetime
- 2004-02-19 EP EP04712672A patent/EP1596106B1/en not_active Expired - Fee Related
- 2004-02-19 WO PCT/JP2004/001853 patent/WO2004074717A1/ja active Application Filing
- 2004-02-19 US US10/536,559 patent/US7306233B2/en not_active Expired - Fee Related
- 2004-02-19 CN CNB2004800016146A patent/CN100561021C/zh not_active Expired - Fee Related
- 2004-02-19 JP JP2005502752A patent/JPWO2004074717A1/ja active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1125031A (en) | 1966-01-27 | 1968-08-28 | Emile Raymond Rene Greifenstei | A device for exerting a radially directed thrust for piston rings |
JPS4510482Y1 (ja) * | 1969-08-27 | 1970-05-14 | ||
FR2183433A5 (ja) | 1972-02-05 | 1973-12-14 | Braun Ag | |
JPS6069350U (ja) * | 1983-10-20 | 1985-05-16 | いすゞ自動車株式会社 | オイルリング |
JPH0338456U (ja) * | 1989-08-24 | 1991-04-15 | ||
JPH08200500A (ja) * | 1995-01-27 | 1996-08-06 | Nissan Motor Co Ltd | 組合せオイルリング |
JP2003287128A (ja) * | 2002-03-29 | 2003-10-10 | Nippon Piston Ring Co Ltd | 2ピース型組合せオイルリング |
Non-Patent Citations (1)
Title |
---|
See also references of EP1596106A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008169882A (ja) * | 2007-01-10 | 2008-07-24 | Toyota Motor Corp | 2ピース型のピストンリング |
Also Published As
Publication number | Publication date |
---|---|
US20060027976A1 (en) | 2006-02-09 |
TWI238233B (en) | 2005-08-21 |
DE602004020592D1 (de) | 2009-05-28 |
KR100669357B1 (ko) | 2007-01-16 |
EP1596106A1 (en) | 2005-11-16 |
US7306233B2 (en) | 2007-12-11 |
EP1596106B1 (en) | 2009-04-15 |
EP1596106A4 (en) | 2006-02-08 |
CN1717557A (zh) | 2006-01-04 |
CN100561021C (zh) | 2009-11-18 |
JPWO2004074717A1 (ja) | 2006-06-01 |
KR20050117516A (ko) | 2005-12-14 |
TW200424459A (en) | 2004-11-16 |
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