WO2002025090A1 - Segment de feu monobloc solidaire de l'ensemble segment de piston et piston - Google Patents

Segment de feu monobloc solidaire de l'ensemble segment de piston et piston Download PDF

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Publication number
WO2002025090A1
WO2002025090A1 PCT/CN2001/000542 CN0100542W WO0225090A1 WO 2002025090 A1 WO2002025090 A1 WO 2002025090A1 CN 0100542 W CN0100542 W CN 0100542W WO 0225090 A1 WO0225090 A1 WO 0225090A1
Authority
WO
WIPO (PCT)
Prior art keywords
ring
piston
groove
cover
combined air
Prior art date
Application number
PCT/CN2001/000542
Other languages
English (en)
Chinese (zh)
Inventor
Weimin Tang
Original Assignee
Weimin Tang
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN 00126547 external-priority patent/CN1343837A/zh
Application filed by Weimin Tang filed Critical Weimin Tang
Priority to AU2001263730A priority Critical patent/AU2001263730A1/en
Publication of WO2002025090A1 publication Critical patent/WO2002025090A1/fr

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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
    • F16J9/12—Details
    • F16J9/14—Joint-closures
    • F16J9/16—Joint-closures obtained by stacking of rings

Definitions

  • the invention relates to a piston ring, in particular to a combined air ring.
  • the invention also relates to a piston ring-piston assembly using the combined air ring, which is suitable for various reciprocating piston engines, especially for reciprocating piston two- or four-stroke engines. Background technique
  • the traditional air ring is usually a one-piece air ring, and a straight-through air leakage channel exists at the cut of the air ring. Therefore, the existing air ring seals on the cylinder are based on the throttling principle.
  • Two to three air rings are sequentially installed in the ring grooves on the piston in the axial direction, and the cuts of the air rings are staggered in the circumferential direction.
  • This structure has a series of disadvantages caused by inter-ring gas flow and inter-ring gas flow. It cannot eliminate the short-circuit gas leakage phenomenon when the upper and lower piston ring counterparts. The righting effect of the piston ring on the piston is also caused by the rotation of the upper and lower rings. And worse.
  • the existing piston ring-piston assemblies currently used in reciprocating piston engines all adopt an air-sealing structure in which a plurality of air rings are sequentially arranged in the axial direction on the piston. At least two air rings are required for this type of gas sealing. Therefore, the conventional piston ring-piston assembly cannot reduce the reciprocating inertial mass of the piston by reducing the number of air rings. On the other hand, due to the structural position relationship, the load difference of each constituent ring is large, and it is difficult to improve the overall performance of the engine by giving full play to the working performance of each constituent ring.
  • An object of the present invention is to provide a combined air ring, which can prevent straight-through gas leakage to achieve the technical effects of enhancing gas sealing and controlling oil consumption of the engine oil.
  • Another object of the present invention is to provide a piston ring-piston assembly applied to a reciprocating piston engine.
  • the number of air rings can be reduced to reduce the reciprocating inertial mass of the piston.
  • a combination of a reciprocating piston ring-piston assembly is provided.
  • Type gas ring the combined gas ring includes a groove ring, a cover ring, zero to several upper steel sheet rings, and a sealing sheet, wherein, in an assembled state with a piston and a cylinder liner, a cutout on the groove ring and The cut of the cover ring located above it is staggered in the circumferential direction, and the sealing sheet is installed at the cut on the groove ring so that the cut on the groove ring is blocked in the radial direction by the sealing sheet live.
  • a piston ring-piston assembly for a reciprocating piston engine wherein the piston is provided with a combined air ring according to the first aspect of the present invention.
  • the combined gas ring of the present invention does not have a free leaking channel, it has good air tightness, good performance of controlling oil, and many disadvantageous factors such as heating the piston caused by blow-by gas between the rings and damaging the oil film are eliminated together. Therefore, by adopting the combined air ring of the present invention, the overall performance of the engine can be comprehensively improved and improved, and a two-ring piston structure with one air ring and one oil ring can be realized.
  • FIG. 1 is a partial axial cross-sectional view showing a preferred embodiment of the combined air ring of the present invention
  • FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
  • FIG. 3 is a partial enlarged view of part B in FIG. 2, showing the relative positional relationship between the cut of the groove ring, the protrusion of the sealing sheet and the groove of the cover ring;
  • FIG. 4 is a schematic diagram showing the crust shape of the sealing sheet
  • FIG. 5 is a plan view showing a structure of a cover ring groove of the present invention.
  • FIG. 6 is a plan view showing another structure of the cover ring groove of the present invention.
  • FIG. 7 is a half cross-sectional view of the first embodiment of the piston ring-piston assembly of the present invention.
  • FIG. 8 is a half cross-sectional view of a second embodiment of the piston ring-piston assembly of the present invention.
  • FIG. 9 is a half cross-sectional view of a third embodiment of the piston ring-piston assembly of the present invention.
  • Fig. 10 is a half cross-sectional view of a fourth embodiment of the piston ring-piston assembly of the present invention. Detailed description of the preferred embodiment
  • the combined air ring 20 of the present invention includes a grooved ring 1 having elasticity and all openings 11, a cover ring 2 with all openings 15, zero to several upper steel sheet rings 3, and One sealing sheet 7.
  • An axially curved notch 10 extending in the circumferential direction is formed on each of the two ends of the slot ring 1 on both sides of the cutout 11, and the sealing piece 7 is inserted into the arced groove formed by the two arced notches 10.
  • the sealing sheet 7 includes a main body portion 60 and a protrusion 6 located at one end of the main body portion. Face of cover ring 2 A groove 5 is provided on one side of the groove ring 1. As shown in FIG.
  • the groove 5 is provided at a position of the cover ring 2 substantially opposite to the cover ring cutout 15 and is used for receiving the protrusion 6 of the sealing sheet.
  • the groove 5 is sized to accommodate the entire protrusion 6.
  • the sealing piece 7 is inserted into the arc-shaped groove of the groove ring, and the axial height HI of the main part of the sealing piece is equal to or slightly lower than the axial thickness of the groove ring 1 so that The notch 11 of the groove ring is blocked from the radial direction over the entire axial height of 1.
  • the groove 5 is axially aligned with the protrusion 6 of the sealing sheet 7 so that the protrusion 6 of the sealing sheet 7 protruding above the upper surface of the groove ring can be inserted therein, so that the protrusion 6 and the groove 5 form a positioning device. It is used to restrict the rotation of the cover ring with respect to the groove ring to prevent the cutout 15 of the cover ring and the cutout 11 of the groove ring from axially aligning to cause leakage.
  • the axial height H2 of the protrusion 6 is greater than the maximum axial gap that may occur between the cover ring 2 and the groove ring 1 to ensure the limit effect of the protrusion 6 on the cover ring.
  • Figures 5 and 6 show two structural forms of the cover ring groove 5, respectively.
  • the groove 5 shown in Figure 5 is open to the inner diameter of the cover ring 2, while the groove 5 shown in Figure 6 is not open to the inner diameter.
  • the size of the cover ring groove 5 and the sealing sheet protrusion 6 relative to the groove ring cut 11 The circumferential position is set so that the cover ring groove 5 cannot communicate with the cutout 11 on the groove ring due to the limiting effect of the sealing piece protrusion 6 to avoid high-pressure gas passing through the groove 5 and the cutout portion located radially outward of the sealing piece leakage.
  • the combined air ring can have various combinations.
  • the cutout 11 of the groove ring and the cutout 15 of the cover ring located above it are staggered in the circumferential direction.
  • the sealing sheet 7 is inserted into the arc-shaped groove located at the cut of the groove ring and blocks the cut 11 of the groove ring from the radial direction.
  • the protrusion 6 of the sealing sheet 7 is inserted into the groove 5 matched with it Limiting the rotation of the cover ring relative to the groove ring is a basic feature of the combined air ring.
  • the sealing sheet 7 blocks the notch 11 of the groove ring 1 in the radial direction; the notch 11 of the groove ring and the notch 15 of the cover ring are located at different positions in the circumferential direction and are inserted through
  • the sealing piece protrusion 6 installed in the cover ring groove 5 locks the groove ring and the cover ring in this orientation.
  • the high-pressure gas 4 in the cylinder can neither leak downwards directly through the cutouts of any constituent ring, nor can it bypass the ringbacks of each constituent ring and pass through the notch 11 of the groove ring, the piston ring bank 13 and the cylinder wall 14 Leakage occurred in channel 12. It can be seen that the sealing principle of the combined air ring of the present invention to the cylinder has changed. It is no longer the traditional throttling working principle, but is based on the full sealing working principle.
  • the cover ring 2 may not be formed with a groove, and the sealing sheet does not have a protrusion 6 accordingly.
  • the top end of the sealing sheet 7 is approximately the same as the upper surface of the groove ring 1.
  • Qi Flat it is preferable to additionally provide a positioning member that prevents the groove ring and the cover ring from relatively rotating in the circumferential direction.
  • the shape of the notches formed at both ends of the notch of the groove ring is not limited to the above-mentioned arc shape, and other shapes of notches such as linear notches can also be used.
  • FIG. 7 is a half cross-sectional view of the first embodiment of the piston ring-piston assembly of the present invention.
  • the piston 8 is provided with only one combined air ring 20 of the present invention, which is mainly used for a two-stroke engine.
  • the piston 8 is provided with two piston rings, and the first ring groove arranged above is the combined air ring 20 of the present invention.
  • the second ring groove below is an oil ring 30, which is a typical two-ring piston structure.
  • FIG. 9 shows an embodiment of a piston ring-piston assembly having three piston rings according to the invention. The piston used in the piston ring-piston assembly of the present invention shown in FIG.
  • the piston ring-piston assembly of the example is the first ring located at the top is the combined air ring 20 of the present invention; the second ring located at the middle is the oil ring 30; and the third ring located at the bottom is the third ring
  • the piston ring is a conical ring 40 having a tapered outer peripheral surface.
  • oil return holes 50 and pressure relief holes 60 are respectively drilled at the bottom and the bottom of the ring groove where the cone surface ring is located toward the pressure bearing surface of the piston.
  • FIG. 10 shows another three-piston ring piston ring-piston assembly of the present invention, which is mainly used in a diesel engine. In the piston ring-piston assembly shown in FIG.
  • the first piston ring located at the top is a trapezoidal ring, a cymbal ring or an air ring 70 having another shape in section;
  • the second piston ring located in the middle is the original ring Invented combined air ring 20;
  • the third piston ring located at the bottom is the oil ring 30.
  • the air ring 70 located above the combined air ring of the present invention plays a shielding role, and adopts a trapezoidal or cymbal ring, which can solve the problem of the ring groove cementing snap ring.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

L'invention concerne un segment de feu monobloc utilisé avec un ensemble garniture de piston et piston alternatif. Ledit segment de feu comprend une bague à rainure élastique (1), une bague de couverture (2), au moins un disque supérieur (3) et une plaque d'étanchéité (7). Lors de l'assemblage de l'ensemble, le segment de feu monobloc est accouplé au piston (8) et à la chemise du cylindre, la gorge (11) ménagée sur la bague à rainure (1) est décalée dans le sens périphérique par rapport à la gorge (15) pratiquée sur la bague de couverture (2), quant à la plaque d'étanchéité, elle est disposée sur la gorge (11) ménagée sur la bague à rainure (1) de manière à obturer le joint de fermeture dans le sens du diamètre. L'invention concerne également un système constitué de l'ensemble solidaire segment de piston-piston à segment de feu monobloc. Ainsi, la présence du segment de feu monobloc permet d'éviter les fuites, d'améliorer l'imperméabilité au gaz, de mieux contrôler le rendement du lubrifiant, d'éviter le piston de chauffer et d'empêcher l'endommagement du film lubrifiant. Les avantages qui ressortent de cette invention sont les suivants : le segment de feu monobloc permet d'améliorer les performances du moteur et d'obtenir un système de piston présentant à la fois un segment de feu étanche au gaz et une bague de lubrification.
PCT/CN2001/000542 2000-09-20 2001-04-03 Segment de feu monobloc solidaire de l'ensemble segment de piston et piston WO2002025090A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001263730A AU2001263730A1 (en) 2000-09-20 2001-04-03 A combined gas ring and its piston ring-piston assembly

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN 00126547 CN1343837A (zh) 2000-09-20 2000-09-20 O形组合气环
CN00126547.4 2000-09-20
CN00263881 2000-11-28
CN00263881.9 2000-11-28

Publications (1)

Publication Number Publication Date
WO2002025090A1 true WO2002025090A1 (fr) 2002-03-28

Family

ID=25739571

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2001/000542 WO2002025090A1 (fr) 2000-09-20 2001-04-03 Segment de feu monobloc solidaire de l'ensemble segment de piston et piston

Country Status (2)

Country Link
AU (1) AU2001263730A1 (fr)
WO (1) WO2002025090A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017118773A1 (de) * 2017-08-17 2019-02-21 Federal-Mogul Burscheid Gmbh Kolbenringsatz, Kolben und Verbrennungsmotor

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2131993Y (zh) * 1991-06-23 1993-05-05 唐为民 “z”型组合式封气环
CN2160763Y (zh) * 1993-06-23 1994-04-06 谭军 组合式活塞环
CN2171684Y (zh) * 1993-05-31 1994-07-13 郑昭 复合环活塞
DE4327621A1 (de) * 1993-08-17 1995-02-23 Mahle Gmbh Kolbenringanordnung für Kolben von Verbrennungsmotoren
WO1997011295A1 (fr) * 1995-09-22 1997-03-27 Man B & W Diesel A/S Segment de piston pour piston de moteur a combustion interne
CN2267330Y (zh) * 1996-05-31 1997-11-12 常柴股份有限公司 嵌片式活塞环
WO1998041749A1 (fr) * 1997-03-14 1998-09-24 Man B & W Diesel A/S Piston pour moteur a crosse a deux temps du type diesel
CN2381795Y (zh) * 1999-04-20 2000-06-07 唐为民 跨式组合气环

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2131993Y (zh) * 1991-06-23 1993-05-05 唐为民 “z”型组合式封气环
CN2171684Y (zh) * 1993-05-31 1994-07-13 郑昭 复合环活塞
CN2160763Y (zh) * 1993-06-23 1994-04-06 谭军 组合式活塞环
DE4327621A1 (de) * 1993-08-17 1995-02-23 Mahle Gmbh Kolbenringanordnung für Kolben von Verbrennungsmotoren
WO1997011295A1 (fr) * 1995-09-22 1997-03-27 Man B & W Diesel A/S Segment de piston pour piston de moteur a combustion interne
CN2267330Y (zh) * 1996-05-31 1997-11-12 常柴股份有限公司 嵌片式活塞环
WO1998041749A1 (fr) * 1997-03-14 1998-09-24 Man B & W Diesel A/S Piston pour moteur a crosse a deux temps du type diesel
CN2381795Y (zh) * 1999-04-20 2000-06-07 唐为民 跨式组合气环

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017118773A1 (de) * 2017-08-17 2019-02-21 Federal-Mogul Burscheid Gmbh Kolbenringsatz, Kolben und Verbrennungsmotor

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Publication number Publication date
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