CN205064111U - L type multipiece ring for internal -combustion engine - Google Patents
L type multipiece ring for internal -combustion engine Download PDFInfo
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- CN205064111U CN205064111U CN201520393813.1U CN201520393813U CN205064111U CN 205064111 U CN205064111 U CN 205064111U CN 201520393813 U CN201520393813 U CN 201520393813U CN 205064111 U CN205064111 U CN 205064111U
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- ring
- armed
- long
- galianconism
- combustion engine
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Abstract
The utility model discloses a L type multipiece ring for internal -combustion engine comprises main ring, coil spring and ring pad. The main ring cross -section is the L type, has long arm and galianconism, each other becomes 90, and galianconism and ring fill up the coincidence packs into in the ring groove, the main ring is split type, can wait in circumference to be divided into 4 partitions or 6 partitions or 8 partitions, is a ring by the locking of the spring outside the galianconism. Receiving the cylinder pressure when the long arm medial surface and doing the time spent, the long arm will deflect and press to the casing wall, and the protruding ring and the casing wall in the long arm outside form first sealed sword promptly, and the reason forms the second and seals up the sword on galianconism upside and the piston ring at this moment, encircle the pad and seal up the sword with ring groove lower edge formation third in the bottom surface down. The utility model discloses can make the sealing load of piston ring, by a traditional very big constant value, change into the change value along with cylinder pressure variation, its mean value is less than the former greatly, makes internal -combustion engine mechanical loss reduce 13 -12, and the net power can improve 10 -20%, has improved the emission simultaneously. The utility model discloses can extensively be used for various internal -combustion engines.
Description
Technical field
The utility model relates to a kind of piston ring for combustion engines, and particularly relate to a kind of internal-combustion engine cross section is the compound piston ring of L-type.
Background technique
Piston ring is the vital part carrying out sealing and joining oil in internal-combustion engine between piston and cylinder liner, internal combustion engine development is so far over nearly 200 years, all the time the integral piston-ring (Fig. 4) of annular opening, rectangular cross-section is adopted, the radial pressure that in its manufacture process, heat treatment shaping and assembling modification produce is utilized to seal during sealing, it is a constant constant in cylinder operation process, i.e. atmospheric pressure sealed.In order to reliable operation, this radial pressure must by most exacting terms in air inlet in internal combustion engine, compression, burning expansion and exhaust 4 circulation, and requirement when namely producing maximum outbreak pressure in combustion expansion process determines.But for quartastroke engine, above-mentioned four cyclic processes, bent axle is by rotation 720 °, and wherein the combustion expansion process time less than 20 °, obviously under being in the effect of maximum radial pressure from start to finish, friction loss between piston ring and cylinder wall is very large, by the serious mechanical loss adding internal-combustion engine, decreases the output power of internal-combustion engine.(friction loss between internal-combustion engine piston ring and cylinder wall has accounted for 70% of the total mechanical loss of internal-combustion engine).
For preventing piston ring head scuffing of cylinder bore, tradition top piston ring has the distance of a 0.12-0.22D (cylinder bore) mm apart from piston head, the gap of 0.25-0.4mm is had between this distance inner carrier and cylinder wall, be formed as clearance space, unfavorable to burning, add the exhaust emission of internal-combustion engine.
Summary of the invention
The purpose of this utility model is the deficiency overcoming prior art, a kind of cross section is provided to be the compound piston ring of L-type, sealing positive pressure between it and cylinder wall, automatically can regulate with the pressure change in cylinder, thus significantly reduce the mechanical loss of internal-combustion engine.
For achieving the above object, the utility model takes following design proposal:
A kind of internal-combustion engine L-type compound piston ring, is characterized in that piston ring is made up of main ring, helical spring and ring pad.Described main ring cross section is L-type, has long-armed and galianconism, long-armed in 90 ° mutually with galianconism, and after galianconism and the coupling of ring pad, be contained in piston ring groove, now its long-armed top flushes with piston head.Described main ring is split-type structural, can being divided into 4 deciles or 6 deciles or 8 deciles, locking into an annulus by being positioned at the helical spring of circular groove outside galianconism in circumference.Described long-armed inner side and piston space have gap, pressure in cylinder can be applied on long-armed inner side surface, long-armed stressed after, each decile will deflect centered by helical spring, long-armed outer side surface will press to cylinder wall, form sealing positive pressure, the size of this positive pressure is with the change in pressure in cylinder.The outer side surface that described compound piston ring is long-armed, a protruding ring is provided with apart from long-armed length 2/3 place, top, ring width is 1.5-3mm, convex surface degree 6-10 μ, convex surface has the PVD coating of 10 below the μ degree of depth, described long-armed stressed after, during each decile deflection, protruding ring and cylinder wall form first and seal sword, and galianconism upper end and piston ring groove upper limb form second and seal sword, and ring pad lower end and piston ring groove lower edge form the 3rd and seal sword.It is 0.4mm that the described long-armed inner side surface top place of flushing is provided with a thickness, and be highly the annulus of 3mm, this annulus and main ring are integrated.On described ring pad, plane is the convex cone face of 7 °, with main ring galianconism bottom surface with these 7 ° of conical surface couplings.
The each decile of described main ring forms by ferrous based powder metallurgical sintering.
The utility model beneficial effect is:
When < 1 > is with conventional piston ring, the mechanical loss of internal-combustion engine can reach 25%, and after adopting L-type compound piston ring, the mechanical loss of internal-combustion engine can reduce half, and the net power of internal-combustion engine can improve 10%-20%.
< 2 > eliminates with clearance space during conventional piston ring between its upper piston and cylinder wall, improves discharge.
Use L-type compound piston ring can facilitate the internal combustion engine development of burning pluralities of fuel (Mutifuel writes a Chinese character in simplified form MF), its main performance feature is: traditional diesel engine speed can be made to double, and makes the few half of traditional gasoline engine oil depletion.
The utility model internal-combustion engine L-type compound piston ring, can be widely used on various internal-combustion engine.
Accompanying drawing explanation
Fig. 1 is the utility model internal-combustion engine L-type compound piston ring structural section figure.
Fig. 2 is the utility model internal-combustion engine L-type compound piston ring layout plan.
Fig. 3 is the utility model internal-combustion engine L-type compound piston ring ring pad sectional view.
Fig. 4 is existing piston ring cross section and layout plan.
Specific embodiments
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, 2, internal-combustion engine L-type compound piston ring is made up of main ring 1, helical spring 2 and ring pad 3, main ring 1 cross section is L-type, there are long-armed 4 and galianconism 5, long-armed 4 is in 90 ° mutually with galianconism 5, galianconism 5 and ring pad 3 coupling are with being contained in piston ring groove, and now long-armed 4 tops flush with piston 6 top.Described main ring 1 is split-type structural, can be divided into 4 deciles or 6 deciles or 8 deciles, lock into an annulus by the helical spring 2 being positioned at circular groove outside galianconism 5 in circumference.Gap is had inside described long-armed 4 and between piston 6, and communicate with cylinder, the pressure in cylinder can be applied on the inner side surface of long-armed 4, after long-armed 4 inner side surfaces are stressed, each decile will deflect centered by helical spring 2, and long-armed 4 outer side surfaces form required sealing positive pressure by pressing to cylinder wall 7.
As shown in Figure 1, internal-combustion engine L-type compound piston ring, the outer side surface of long-armed 4 is apart from long-armed length 2/3 place, top, and be provided with a protruding ring, ring width is 1.5-3mm, projection degree 6-10 μ, convex surface has the PVD coating of 10 below μ, when the stressed each decile of long-armed 4 inner side surface deflects, this protruding ring and cylinder wall 7 form the first sealing sword, galianconism 5 upper end and piston ring groove upper limb form second and seal sword simultaneously, and ring pad 3 lower end surface and piston ring groove lower edge form the 3rd and seal sword.
The described long-armed 4 inner side surface top places of flushing have a thickness to be 0.4mm, are highly the bulge loop of 3mm, and this bulge loop to have flowed throttling and damping function to the air in gap between long-armed 4 inner side surfaces and piston 6.
As shown in Figure 3, on described ring pad 3, plane is 7 ° of convex cone faces, with galianconism 5 bottom surface of main ring 1 with these 7 ° of inclined-plane couplings, moves radially, provide possibility for " the first sealing sword " produces, also improve " the first sealing sword " simultaneously and produce the sensitivity deflected.
Described inner pressure of air cylinder changes with cylinder operation process, the sealing positive pressure produced on " the first sealing sword " by cylinder pressure effect also changes with the change of cylinder pressure, when cylinder combustion burns expansion, cylinder pressure is large, and corresponding formed sealing positive pressure is also large, when cylinder exhaust, cylinder pressure diminishes gradually, sealing positive pressure also reduces thereupon gradually, and this had both met the needs to cylinder seal, overcomes again the shortcoming that conventional piston ring sealing positive pressure is a very large constant.
Sealing positive pressure on the first described sealing sword seals sword area business to the area inside long-armed 4 and first and is directly proportional.When product specification, more easily carry out setting and adjusting.
The described each decile of L-type compound piston ring all forms with ferrous based powder metallurgical sintering.
Claims (6)
1. an internal-combustion engine L-type compound piston ring, it is characterized in that piston ring is by main ring (1), helical spring (2) and ring pad (3) composition, described main ring (1) cross section is L-type, there are long-armed (4) and galianconism (5), long-armed (4) are in 90 ° mutually with galianconism (5), be contained in piston ring groove together after galianconism (5) and ring pad (3) coupling, now long-armed (4) top flushes with piston (6) top, described main ring (1) is split-type structural, 4 deciles or 6 deciles or 8 deciles are divided in circumference, an annulus is locked into by the spring (2) being positioned at galianconism (5) outside circular groove, gap is had between the inner side surface of described long-armed (4) and piston (6), pressure in cylinder can be applied on the inner side surface of long-armed (4), after long-armed (4) are stressed, each decile will deflect centered by helical spring (2), the outside of long-armed (4) will press to cylinder wall (7), sealing positive pressure needed for formation, this pressure size changes with the change of inner pressure of air cylinder.
2. a kind of internal-combustion engine L-type compound piston ring as claimed in claim 1, it is characterized in that the outer side surface of described long-armed (4), a protruding ring is provided with apart from brachium L2/3 place, top, ring width is 1.5-3mm, convex surface degree is 6-10 μ, convex surface has the PVD coating of 10 below μ, this protruding ring and cylinder wall (7) form first and seal sword.
3. a kind of internal-combustion engine L-type compound piston ring as claimed in claim 1, when it is characterized in that described long-armed (4) stressed rear each decile deflects, galianconism (5) upper end and piston ring groove upper limb form second and seal sword, and ring pad (3) lower end and piston ring groove lower edge form the 3rd and seal sword.
4. a kind of internal-combustion engine L-type compound piston ring as claimed in claim 1, it is characterized in that the inner side surface top place of flushing of described long-armed (4) is provided with a thickness is 0.4mm, be highly the annulus of 3mm, this annulus and long-armed (4) are integrated.
5. a kind of internal-combustion engine L-type compound piston ring as claimed in claim 1, is characterized in that the upper plane of described ring pad (3) is the convex cone face of α=7 °, with galianconism (5) bottom surface with these 7 ° of inclined-plane couplings.
6. a kind of internal-combustion engine L-type compound piston ring as claimed in claim 1, is characterized in that described main ring (1) each decile forms by ferrous based powder metallurgical sintering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520393813.1U CN205064111U (en) | 2015-06-09 | 2015-06-09 | L type multipiece ring for internal -combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520393813.1U CN205064111U (en) | 2015-06-09 | 2015-06-09 | L type multipiece ring for internal -combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205064111U true CN205064111U (en) | 2016-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520393813.1U Expired - Fee Related CN205064111U (en) | 2015-06-09 | 2015-06-09 | L type multipiece ring for internal -combustion engine |
Country Status (1)
| Country | Link |
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| CN (1) | CN205064111U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145598A (en) * | 2019-06-03 | 2019-08-20 | 天津大学 | Built-up piston top bank ring, piston assembly, internal combustion engine and encapsulating method |
-
2015
- 2015-06-09 CN CN201520393813.1U patent/CN205064111U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145598A (en) * | 2019-06-03 | 2019-08-20 | 天津大学 | Built-up piston top bank ring, piston assembly, internal combustion engine and encapsulating method |
| CN110145598B (en) * | 2019-06-03 | 2024-02-09 | 天津大学 | Combined piston top land ring, piston assembly, internal combustion engine and sealing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160302 Termination date: 20200609 |
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| CF01 | Termination of patent right due to non-payment of annual fee |