CN101338707A - Piston, piston ring assembly for internal combustion engine - Google Patents
Piston, piston ring assembly for internal combustion engine Download PDFInfo
- Publication number
- CN101338707A CN101338707A CNA2008100555743A CN200810055574A CN101338707A CN 101338707 A CN101338707 A CN 101338707A CN A2008100555743 A CNA2008100555743 A CN A2008100555743A CN 200810055574 A CN200810055574 A CN 200810055574A CN 101338707 A CN101338707 A CN 101338707A
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- piston
- ring
- gas
- fitting surface
- rings
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The present invention relates to an internal combustion engine piston and piston ring component which further perfects the structure of the prior overlapped piston ring. The internal combustion engine piston and piston ring component comprises a piston ring comprising gas rings and oil rings and is characterized in that a piston is provided with two ring slots; two gas rings are arranged in one ring slot, and the oil rings are arranged in the other ring slot; gas ring cuts are overlapped internally and externally; the gas ring cuts of the two gas rings are staggered by 170 degrees to 180 degrees. The internal combustion engine piston and piston ring component has the beneficial effects of changing the structures of the traditional piston and gas ring, increasing the tightness of the gas ring towards the combustion chamber, reducing exhaust gas in a crankcase, improving the engine power, reducing the engine oil consumption quantity and prolonging the service life of the engine.
Description
Technical field
The present invention is specifically related to a kind of piston for IC engine, piston-ring packing.
Background technique
Usually offer three annular grooves on traditional piston, piston ring is housed in the annular groove, piston ring comprises compression ring and oil ring.The sealing cylinder of the effect of compression ring.The existing piston ring, the centre of ring has otch, is convenient on the one hand install, and makes on the other hand to cooperate closely.The otch of piston ring mostly is angular cut and straight cut, and its sealing effect to incision is not fine, causes to scurry under the pressurized gas and power of IC engine is reduced, and causes energy waste.
Disclose the seal ring of some bridging arrangements in the prior art, better solved the problems referred to above, but also remained further perfect.
Summary of the invention
The structure of existing overlap joint type piston ring that the present invention is further perfect provides a kind of piston for IC engine, piston-ring packing of high leak tightness.
The present invention adopts following technological scheme to realize: piston for IC engine, piston-ring packing, piston ring comprises compression ring, oil ring, it is characterized in that being provided with on the described piston twice annular groove, place two compression rings in one annular groove, place oil ring in one annular groove, the compression ring otch is inside and outside overlap joint, and the compression ring otch of two compression rings staggers 170 °～180 °.
The fitting surface of compression ring incision comprises the radially circumferential fitting surface of inside and outside fitting surface of radially fit on face, the inside fitting surface in footpath and connection, inwardly the length L b=0.2～0.3mm of fitting surface, the circumferentially length L of fitting surface of the length L a-of fit on face footpath radially: width c=1.2～1.4 of compression ring.
Conventional piston adopts three road annular grooves, and piston of the present invention adopts the structure of twice annular groove three road rings, the twice compression ring is placed in the same annular groove, the compression ring otch is taked inside and outside overlap joint, two compression ring axial clearances are very little, after waste gas of combustion chamber enters the otch of top compression ring by the gap between the cylinder and piston, be difficult to otch by the second road compression ring, guaranteed the sealing of firing chamber like this.When waste gas of combustion chamber by take inside and outside this jointing produce one outside (to cylinder wall) thus thrust increased the sealing of piston ring to cylinder, improved cylinder pressure.
The present invention has following beneficial effect: changed the structure of conventional piston and compression ring, increased the sealing of compression ring to the firing chamber, reduced the waste gas in the crankcase, improved engine power, reduced the engine motor oil consumption, prolonged motor working life.
Description of drawings
Fig. 1 is a structural representation of the present invention
Fig. 2 is the structural representation of compression ring
Fig. 3 is the A portion enlarged view of Fig. 2
Among the figure: 1-piston, 2-annular groove, 3-compression ring, 4-oil ring, 5-compression ring gas port, 6-is fit on face radially, and the 7-footpath is fitting surface inwardly, the circumferential fitting surface of 8-, La-is the length of fit on face radially, and the Lb-footpath is the length of fitting surface inwardly, the circumferential fitting surface length of L-, c-compression ring width.
Embodiment
In conjunction with the accompanying drawings the specific embodiment of the present invention is described further.
Piston for IC engine, piston-ring packing, piston ring comprises compression ring 3, oil ring 4, it is characterized in that on the described piston 1 twice annular groove 2 being set, place two compression rings 3 in one annular groove, place oil ring 4 in one annular groove, compression ring otch 5 is inside and outside overlap joint, and the compression ring otch of two compression rings staggers 170 °～180 °.
The fitting surface of compression ring incision comprises the radially circumferential fitting surface 8 of inside and outside fitting surface of radially fit on face 6, the inside fitting surface 7 in footpath and connection, inwardly the length L b=0.2～0.3mm of fitting surface, the circumferentially length L of fitting surface of the length L a-of fit on face footpath radially: width c=1.2～1.4 of compression ring.
Claims (2)
1, a kind of piston for IC engine, piston-ring packing, piston ring comprises compression ring (3), oil ring (4), it is characterized in that being provided with on the described piston (1) twice annular groove (2), place two compression rings (3) in one annular groove, place oil ring (4) in one annular groove, compression ring otch (5) is inside and outside overlap joint, and the compression ring otch of two compression rings staggers 170 °～180 °.
2, piston for IC engine according to claim 1, piston-ring packing, the fitting surface that it is characterized in that the compression ring incision comprises the radially circumferential fitting surface (8) of inside and outside fitting surface of radially fit on face (6), the inside fitting surface (7) in footpath and connection, inwardly length (Lb)=0.2～0.3mm of fitting surface, the circumferentially length (L) of fitting surface of the length of fit on face (La)-footpath radially: the width of compression ring (c)=1.2～1.4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100555743A CN101338707A (en) | 2008-08-07 | 2008-08-07 | Piston, piston ring assembly for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100555743A CN101338707A (en) | 2008-08-07 | 2008-08-07 | Piston, piston ring assembly for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101338707A true CN101338707A (en) | 2009-01-07 |
Family
ID=40212859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100555743A Pending CN101338707A (en) | 2008-08-07 | 2008-08-07 | Piston, piston ring assembly for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101338707A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806258A (en) * | 2010-03-19 | 2010-08-18 | 程大友 | Labyrinth ring overlapped type piston assembly and application thereof |
| CN101813187A (en) * | 2010-05-07 | 2010-08-25 | 李向东 | Piston ring capable of sealing gas and piston |
| CN103410629A (en) * | 2013-08-19 | 2013-11-27 | 邓国峰 | Piston assembly of multi-ring-land composite piston ring |
| CN114294298A (en) * | 2021-12-31 | 2022-04-08 | 苗靖文 | Bridging type sealing ring |
-
2008
- 2008-08-07 CN CNA2008100555743A patent/CN101338707A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806258A (en) * | 2010-03-19 | 2010-08-18 | 程大友 | Labyrinth ring overlapped type piston assembly and application thereof |
| CN101813187A (en) * | 2010-05-07 | 2010-08-25 | 李向东 | Piston ring capable of sealing gas and piston |
| WO2011137747A1 (en) * | 2010-05-07 | 2011-11-10 | 王胜 | Piston ring for sealing gas and piston |
| CN103410629A (en) * | 2013-08-19 | 2013-11-27 | 邓国峰 | Piston assembly of multi-ring-land composite piston ring |
| CN114294298A (en) * | 2021-12-31 | 2022-04-08 | 苗靖文 | Bridging type sealing ring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20090107 |