CN2214534Y - Improved engine piston - Google Patents
Improved engine piston Download PDFInfo
- Publication number
- CN2214534Y CN2214534Y CN 94229275 CN94229275U CN2214534Y CN 2214534 Y CN2214534 Y CN 2214534Y CN 94229275 CN94229275 CN 94229275 CN 94229275 U CN94229275 U CN 94229275U CN 2214534 Y CN2214534 Y CN 2214534Y
- Authority
- CN
- China
- Prior art keywords
- piston
- compression ring
- annular groove
- improved engine
- rings
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
- 230000006835 compression Effects 0.000 claims description 26
- 238000007906 compression Methods 0.000 claims description 26
- 238000007789 sealing Methods 0.000 abstract description 6
- 238000007142 ring opening reaction Methods 0.000 abstract description 3
- 210000001138 tear Anatomy 0.000 description 2
- 125000002619 bicyclic group Chemical group 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
Images
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model relates to an improved engine piston, which is especially suitable for the piston of an automobile engine. The inner of the ring groove of an air ring is provided with two air rings or over two air rings. Each ring opening of the air ring is staggeredto be arranged. The utility model has the characteristics of the channel digital of arranged rings reduction, the processing cost of a piston lowering and the improvement of gap sealing between the piston and a cylinder wall.
Description
The utility model relates to a kind of improved engine piston, is particularly useful for the motor car engine piston.
In prior art, some annular grooves are arranged on the engine piston head, by the compression ring of an opening is housed in the every groove of annular groove at top, be used for gap between packed-piston and cylinder wall.Because of compression ring has the opening end gap, the above compression ring of twice then to be set at least, so that the opening on each ring staggers, to increase the gas leakage resistance, be generally 2-3 road compression ring, its deficiency is that when cylinder wall weares and teares its internal diameter increases, and the compression ring external diameter reduces, then compression ring opening end gap increases thereupon, the opening air leakage increases, and will cause blow-by of piston, gas blowby can occur, oils, befouling environment, reduction power, shorten the overhaul life.
The utility model purpose is to provide a kind of improved engine piston, can improve the sealing between piston and the cylinder wall.
Technical solution of the present utility model is achieved in that engine piston comprises piston body, the compression ring annular groove has been cut along circumference in the piston body upper end portion, stud with compression ring in the annular groove, each collar extension staggers, gas can directly not entered in the next annular groove by the collar extension end gap, can because wear and tear in using compression ring opening end gap be increased again, and cause gas leakage to increase, thereby reach the sealing that improves between piston and the cylinder wall.
Because gas can then can not reduce compression ring road number directly by the gas leakage of collar extension end gap in the cylinder, adopts one pair of compression ring can reach on piston yet and satisfies existing usage requirement.
Advantage of the present utility model and good effect are: 1. in per pass compression ring annular groove two or more compression rings are set, collar extension can directly be staggered, adopting under the constant situation of Primordial Qi circuit number, can further increase the gas leakage resistance again and not frayed influence.2. adopt the one groove and two rings sealing, can increase the gas leakage resistance equally, then can cancel the former compression ring of establishing more, adopt the sealing of one pair of compression ring or many compression rings, promptly can satisfy seal request, from and can reduce depth pistion, reduce annular groove processing, cut down finished cost, also reduced the motor height simultaneously.3. minimizing power loss is saved maintenance expenses.
Below in conjunction with accompanying drawing the utility model being made further detail describes:
Accompanying drawing is to adopt one dicyclic sealing configuration sketch on the piston.
Referring to accompanying drawing, compression ring annular groove 2 has been cut on piston 1 top one, and two compression rings 3 are housed in the annular groove 2, and collar extension staggers 180 °.Two rings are invaded to reduce gas leaning on not chamfering (it is vertical with the ring circumferential surface promptly to encircle end face) of end face.
The utility model another program is to be processed with 2-3 road compression ring annular groove 2 on piston 1, and two compression rings 3 or three compression rings 3 are housed in each annular groove 2.
Claims (3)
1, a kind of improved engine piston comprises piston body (1), and compression ring annular groove (2) has been cut along circumference in piston body (1) upper end portion, it is characterized in that studding with compression ring (3) in the annular groove (2), and each collar extension staggers.
2,, it is characterized in that compression ring annular groove (2) is 1 to three road according to the described a kind of improved engine piston of claim 1.
3, according to claim 1 or 2 described a kind of improved engine pistons, it is characterized in that studding with in the per pass compression ring annular groove (2) two or three compression rings (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94229275 CN2214534Y (en) | 1994-07-30 | 1994-07-30 | Improved engine piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94229275 CN2214534Y (en) | 1994-07-30 | 1994-07-30 | Improved engine piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2214534Y true CN2214534Y (en) | 1995-12-06 |
Family
ID=33841643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94229275 Expired - Fee Related CN2214534Y (en) | 1994-07-30 | 1994-07-30 | Improved engine piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2214534Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112282884A (en) * | 2020-10-28 | 2021-01-29 | 哈尔滨工程大学 | Fully-variable gas distribution actuating device and control method thereof |
-
1994
- 1994-07-30 CN CN 94229275 patent/CN2214534Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112282884A (en) * | 2020-10-28 | 2021-01-29 | 哈尔滨工程大学 | Fully-variable gas distribution actuating device and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |