WO2006092087A1 - Segment de positionnement a gaz combine et ensemble de piston l’utilisant - Google Patents

Segment de positionnement a gaz combine et ensemble de piston l’utilisant Download PDF

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Publication number
WO2006092087A1
WO2006092087A1 PCT/CN2005/001266 CN2005001266W WO2006092087A1 WO 2006092087 A1 WO2006092087 A1 WO 2006092087A1 CN 2005001266 W CN2005001266 W CN 2005001266W WO 2006092087 A1 WO2006092087 A1 WO 2006092087A1
Authority
WO
WIPO (PCT)
Prior art keywords
ring
positioning
gas
slit
piston
Prior art date
Application number
PCT/CN2005/001266
Other languages
English (en)
Chinese (zh)
Inventor
Fanlu Kong
Original Assignee
Fanlu Kong
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
Application filed by Fanlu Kong filed Critical Fanlu Kong
Publication of WO2006092087A1 publication Critical patent/WO2006092087A1/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
    • F16J9/18—Joint-closures with separate bridge-elements
    • 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 main function of the piston is to withstand the pressure of the gas in the cylinder and transmit this force through the piston pin to the connecting rod to propel the crankshaft.
  • the top of the piston forms a combustion chamber together with the cylinder head and the cylinder wall.
  • a piston ring is mounted on the piston, and the piston ring includes a gas ring and an oil ring.
  • the main function of the gas ring is to ensure the seal between the piston and the cylinder wall, to prevent high temperature and high pressure gas from leaking into the crankcase, and to conduct most of the heat at the top of the piston to the cylinder wall, and then to be carried away by cooling water or air; It is the premise of heat conduction.
  • the gas ring seal If the gas ring seal is not good, it will leak directly into the crankcase from the outer surface of the gas ring. This will not only be poorly fitted by the gas ring and the cylinder wall, but will not dissipate heat well. The surface also receives additional heat and will eventually cause the piston and gas ring to burn out.
  • the oil ring is used to scrape off excess oil on the cylinder wall, which not only prevents the oil from entering the cylinder, but also reduces the wear and frictional resistance of the piston, piston ring and cylinder, and also plays an auxiliary role in sealing the air.
  • the main passage of the gas leaking into the crankcase in the cylinder is the slit of the piston ring.
  • the shape of the slit and the size of the gap after the cylinder is installed have a certain influence on the amount of gas leaking into the crankcase. If the gap of the incision is too large, the air leakage is serious, and the engine power is reduced. If the clearance is too small, the piston ring may be stuck or broken after being thermally expanded.
  • the ordinary air ring is a single-piece ring with a straight cut. After being fitted on the piston and the cylinder body, the two ends of the slit are in contact, but there is still a gap. In order to strengthen the sealing of the cylinder, usually two to three such single-piece air rings are mounted on the piston, and the slits of the rings are staggered from each other to form a "maze" type sealing structure.
  • the piston moves at high speed in the cylinder, which will generate a large inertia force.
  • the gas pressure and inertial force experienced by the piston are cyclical, so different parts of the piston are subjected to alternating tensile, compressive and bending loads. and Moreover, the temperature of each part of the piston is extremely uneven, and a certain thermal stress will be generated inside. Due to the structural positional relationship, the load difference of each gas ring is large. After the gas ring is installed in the cylinder together with the piston, it generates elastic force and closely adheres to the cylinder wall. The first gas ring is pressed against the lower end surface of the ring groove under the pressure of the gas, so that the gas flows around the ring.
  • the positioning combined air ring of the present invention comprises an upper ring and a lower ring superposed on the lower ring, wherein one end of the upper ring slit is provided with an upper positioning device, and one end or both ends of the lower ring cutout
  • the lower positioning device is provided, and the lower positioning device of the lower ring cooperates with the upper positioning device of the upper ring, so that the slit of the lower ring and the slit of the upper ring are offset from each other, the slit of the lower ring is covered by the upper ring, and the slit of the upper ring is closed by the lower ring. Occlusion.
  • the left end or the right end of the upper ring slit is provided with a notch
  • the upper positioning device is a positioning piece, and the upper part of the positioning piece is welded in the notch of the upper ring slit;
  • One end or both ends of the ring slit are respectively provided with a positioning notch, and the positioning notch is used as a lower ring positioning device to cooperate with a lower portion of the positioning piece of the upper positioning device of the upper ring, so that the lower ring incision and the upper ring incision are mutually offset, and the lower ring
  • the slit is covered by the upper ring, and the slit of the upper ring is blocked by the lower ring.
  • the positioning piece can also be set on the lower ring, but it has been proved that: the positioning piece is arranged on the upper ring to make the sealing more reliable and the effect is better.
  • the positioning piece of the upper positioning device has an inverted "L" shape, and the upper horizontal portion thereof is fixedly connected to the notch at one end of the upper ring slit by laser welding, and the lower vertical portion protrudes below the upper ring, and the lower ring One or both sides of the positioning notch at one or both ends of the slit and the vertical portion of the positioning piece Correspondingly, the lower ring slit and the upper ring slit are offset from each other.
  • the positioning combined air ring has the same thickness of the upper ring and the lower ring. This is convenient for processing and manufacturing.
  • the positioning combined air ring keeps the lower ring slit and the upper ring slit in a mutually staggered state due to the restriction of the positioning piece, so that the lower ring notch and the upper ring notch are not aligned during use, thereby
  • the occurrence of the helium phenomenon between the rings in the prior art is prevented, the sealing is more reliable, the thermal conductivity is good, and the manufacturing and installation are convenient.
  • Another object of the present invention is to provide a piston assembly using the positioning combined air ring, which is well matched with the cylinder and has a reliable seal, which can comprehensively improve and improve the overall performance of the engine, reduce energy consumption, and eliminate exhaust gas. The amount of harmful substances in the reduction is reduced.
  • the piston assembly of the present invention using the positioning combined air ring includes a piston, an oil ring disposed in a ring groove at a lower portion of the piston head, and a ring groove above the oil ring of the piston head There are 0-2 single-piece air rings inside, and 1 positioning combined air ring in the other ring groove.
  • the positioning combined air ring comprises an upper ring and a lower ring superposed on the lower ring, wherein the upper ring is provided with an upper positioning device at one end, and one or both ends of the lower ring cutout.
  • the lower positioning device, the lower positioning device of the lower ring cooperates with the upper positioning device of the upper ring, so that the slit of the lower ring and the slit of the upper ring are offset from each other, the slit of the lower ring is covered by the upper ring, and the slit of the upper ring is blocked by the lower ring.
  • the single-piece gas ring is a single-piece gas ring welded with a sealing piece, or a commonly used straight-cut single-piece gas ring.
  • the positioning combined air ring is installed in the first ring groove of the upper part of the head of the piston, and the second air ring is a single piece of air ring welded with the sealing piece, the third way For the oil ring.
  • the first gas ring is subjected to higher pressure and temperature. Therefore, the combined gas ring with good sealing performance and good thermal conductivity is used; the pressure and temperature of the second gas ring are lower than the first gas ring, so Sealing performance and thermal conductivity of a single piece of gas ring welded with sealing piece; using different structure of the gas ring, to adapt to different working conditions, you can give full play to the performance of each gas ring to improve the overall performance of the engine.
  • the positioning combined piston ring is mounted in the first annular groove of the upper portion of the head of the piston, and the second passage is an oil ring. That is to say, the scheme does not have a monolithic gas ring. Under the premise of ensuring the seal, reducing one ring can improve the reciprocating inertial quality of the piston and reduce the cost.
  • the present invention has a good sealing performance due to the positioning of the combined air ring blocking the free leakage channel, and the heat conduction performance is good, thereby eliminating the heating piston caused by the helium gas between the rings and destroying the oil film. And many other unfavorable factors.
  • the piston is equipped with differently configured positioning combined gas rings and single-piece gas rings, which can comprehensively improve and improve the overall performance of the engine, reduce energy consumption, increase life, and reduce harmful substances in the exhaust gas. It is suitable for a variety of reciprocating piston engines.
  • Figure la is a schematic diagram of the state of use of the positioning combined gas ring
  • Figure lb is a top view of Figure la;
  • Figure 2a is a schematic diagram of the free state of the upper ring of the positioning combined gas ring
  • Figure 2b is a plan view of Figure 2a
  • Figure 3a is a schematic view showing the free state of the lower ring of the positioning combined gas ring
  • Figure 3b is a top view of Figure 3a
  • Figure 4 is a schematic view showing the free state of the lower ring provided with positioning notches at both ends;
  • Figure 5a is a schematic view of a single piece of gas ring with a sealing piece
  • Figure 5b is a top view of Figure 5a
  • Figure 6 is a schematic view of the piston assembly of the first form using a positioning combined gas ring
  • Figure 7 is a schematic view of a second embodiment of a piston assembly using a positioning combined gas ring
  • Figure 8 is a schematic view of a third embodiment of a piston assembly using a positioning combined gas ring. detailed description
  • Embodiment 1 Referring to FIG. 2a and FIG. 2b, a circumferentially extending notch is formed at one end of the upper ring 1 slit, and a positioning device for positioning the upper ring 1 of the combined air ring by laser welding is inverted. The horizontal portion of the upper portion of the "shaped positioning piece 3" is welded in the notch.
  • a positioning notch i.e., positioning device 4 is machined at the right end of the slit of the lower ring 2 of the positioning modular air ring.
  • a positioning notch that is, a positioning device 4 may be added to each of the left and right ends of the slit of the lower ring 2 of the positioning combined air ring.
  • the upper ring 1 is superposed on the upper ring 2, and the positioning notch 4 at one end of the lower ring 2 is engaged with the vertical lower portion of the upper ring 1 positioning piece 3, thereby making the upper ring 1 relative to
  • the lower ring 2 is circumferentially positioned such that the lower ring slit and the upper ring slit are circumferentially offset from each other, i.e., constitute the positioning combined gas ring 8 of the present invention.
  • the positioning piece 3 is disposed on the upper ring 1 and the positioning notch is disposed in the lower ring 2. It will be apparent to those skilled in the art that the positioning piece 3 can be placed on the lower ring 2 instead of The positioning notch is set on the upper ring 1 to achieve the same effect.
  • the positioning means is in the form of a positioning piece 3 which is mounted in a circumferentially extending notch at one end of the upper ring 1 slit.
  • other positioning means can be used instead of the positioning piece 3.
  • an axially extending bore can be formed in the upper ring 1 and a positioning device in the form of a locating rod can be mounted in the bore.
  • a positioning hole is formed in the lower ring 2 instead of the positioning notch 4.
  • the upper ring 1 is circumferentially positioned relative to the lower ring 2 by inserting the positioning rod on the upper ring 1 into the positioning hole on the lower ring 2, and the lower ring is cut and
  • the upper ring slits are offset from each other in the circumferential direction.
  • the positioning means respectively provided on the upper ring 1 and the lower ring 2 are not limited to being disposed near the slits of the upper ring 1 and the lower ring 2, but may be disposed at any circumferential position of the upper ring 1 and the lower ring 2.
  • the mutually locating positioning means respectively disposed on the upper ring 1 and the lower ring 2 can take any suitable form as long as they can achieve the circumferential positioning of the upper ring 1 with respect to the lower ring 2, and
  • the ring slit and the upper ring slit may be circumferentially offset from each other.
  • Embodiment 2 Referring to FIG. 5a and FIG. 5b, a notch is processed at each end of a commonly used single-piece gas ring slit, and a part of the sealing piece 9 is fixedly connected in a notch at one end of the slit by a laser welding method, and the sealing piece is sealed. The other part of 9 cooperates with the notch at the other end to form a single piece of air ring 10 with a sealing piece.
  • Embodiment 3 Referring to FIG. 6, the above-mentioned positioning combined air ring 8 is installed in the first ring groove of the head of the piston 5, and the above-mentioned single-piece air ring 10 with the sealing piece is mounted on the head of the piston 5. In the second ring groove, the oil ring 6 is mounted in the third ring groove of the head of the piston 5, which is the first form of the piston assembly using the positioning combined gas ring.
  • Embodiment 4 Referring to FIG. 7, the above-mentioned positioning combined air ring 8 is installed in the first ring groove of the head of the piston 5, and the oil ring 6 is installed in the second ring groove of the head of the piston 5, that is, A second form of piston assembly for positioning a combined gas ring.
  • This embodiment does not install a single piece of air ring.
  • Embodiment 5 Referring to FIG. 8, the above-mentioned positioning combined air ring 8 is installed in the first ring groove of the head of the piston 5, and the above-mentioned single-piece air ring 10 with the sealing piece is mounted on the head of the piston 5.
  • the single-piece air ring 7 is installed in the third ring groove of the head of the piston 5, and the oil ring 6 is installed in the fourth ring groove of the head of the piston 5, which is used for positioning.
  • a third form of the piston assembly of the combined gas ring is particularly suitable for diesel engines.

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 positionnement à gaz combiné et un ensemble de piston l’utilisant, susceptibles d’être utilisés dans un large éventail de moteurs à pistons à mouvement alternatif. Le segment à gaz comporte un segment supérieur et un segment inférieur. Un élément de positionnement supérieur est monté à une extrémité de l’ouverture du segment supérieur. Un élément de positionnement inférieur est monté à une extrémité, ou aux deux extrémités, de l’ouverture du segment inférieur. L’élément de positionnement inférieur s’accouple avec l’élément de positionnement supérieur pour séparer l’ouverture du segment supérieur de l’ouverture du segment inférieur. L’ensemble de piston utilisant le segment à gaz combiné comporte un piston sur lequel est disposé un segment de lubrification. Entre zéro et deux segments à gaz monolithiques sont montés à l’intérieur d’une rainure supérieure du segment de lubrification. Un segment à gaz combiné est monté à l’intérieur d’une autre rainure supérieure du segment de lubrification. Le segment de positionnement à gaz combiné bloque le chemin de fuite et possède donc d’excellentes propriétés d’étanchéité. L’ensemble de piston doté de différents segments à gaz peut améliorer les performances globales du moteur, réduire la consommation d’énergie et diminuer la teneur en particules nocives des gaz d’échappement.
PCT/CN2005/001266 2005-03-04 2005-08-15 Segment de positionnement a gaz combine et ensemble de piston l’utilisant WO2006092087A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200510020467.3 2005-03-04
CNA2005100204673A CN1828034A (zh) 2005-03-04 2005-03-04 定位组合式气环及使用这种气环的活塞总成

Publications (1)

Publication Number Publication Date
WO2006092087A1 true WO2006092087A1 (fr) 2006-09-08

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PCT/CN2005/001266 WO2006092087A1 (fr) 2005-03-04 2005-08-15 Segment de positionnement a gaz combine et ensemble de piston l’utilisant

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CN (1) CN1828034A (fr)
WO (1) WO2006092087A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105889502A (zh) * 2016-04-27 2016-08-24 唐思钊 一种活塞环

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102182580B (zh) * 2011-04-15 2012-11-07 孔凡鲁 一种渗浸陶瓷活塞环及其渗浸陶瓷的方法
EP2610532A1 (fr) * 2011-12-30 2013-07-03 FPT Industrial S.p.A. Unité d'étanchéité de piston de moteur à combustion interne
CN114857378A (zh) * 2021-02-04 2022-08-05 中国航发商用航空发动机有限责任公司 管接头密封结构、涡轮、燃气涡轮发动机以及管接头

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2514176Y (zh) * 2001-11-24 2002-10-02 党新胜 封口活塞环
JP2003287127A (ja) * 2002-03-28 2003-10-10 Teikoku Piston Ring Co Ltd 組合せピストンリング及びその製造方法
CN1553049A (zh) * 2003-05-28 2004-12-08 唐为民 一种带有封口互锁装置的组合气环及其活塞

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2514176Y (zh) * 2001-11-24 2002-10-02 党新胜 封口活塞环
JP2003287127A (ja) * 2002-03-28 2003-10-10 Teikoku Piston Ring Co Ltd 組合せピストンリング及びその製造方法
CN1553049A (zh) * 2003-05-28 2004-12-08 唐为民 一种带有封口互锁装置的组合气环及其活塞

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105889502A (zh) * 2016-04-27 2016-08-24 唐思钊 一种活塞环

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Publication number Publication date
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