CN202202977U - Piston ring of gasoline engine - Google Patents
Piston ring of gasoline engine Download PDFInfo
- Publication number
- CN202202977U CN202202977U CN201120265268XU CN201120265268U CN202202977U CN 202202977 U CN202202977 U CN 202202977U CN 201120265268X U CN201120265268X U CN 201120265268XU CN 201120265268 U CN201120265268 U CN 201120265268U CN 202202977 U CN202202977 U CN 202202977U
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- piston ring
- piston
- petrolic
- cylinder
- ring
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Abstract
The utility model provides a piston ring of a gasoline engine, belonging to the technical field of the gasoline engines. With the adoption of the piston ring, the technical problems of bad sealing performance and the like of the piston ring in the existing gasoline engine are solved. In the piston ring of the gasoline engine, the engine comprises a piston and a cylinder, the upper end of the piston is provided with an annular trough, the piston ring is arranged between the annular trough and the cylinder, the piston ring comprises an annular body, and an chamfer angle is arranged on a junction of the inner side face and the upper end face of the body. The piston ring of the gasoline engine has the advantages of simple structure, convenience in processing, good sealing effect and the like.
Description
Technical field
The utility model belongs to technical field of automobile engine, relates to a kind of petrolic piston closes device, particularly a kind of petrolic piston ring.
Background technique
Piston ring is widely used on the various dynamic power machines, like steamer, diesel engine, petrol engine, compressor, hydraulic press etc., is widely used in automobile, train, steamer, yacht etc.General piston ring is installed in the annular groove of piston, and it forms the chamber acting with elements such as piston, cylinder sleeve, cylinder caps.Piston ring is a kind of metallic elastic ring that expands outwardly distortion more greatly that has, and it is mounted in its corresponding circular groove of section.Back and forth, rely on the pressure difference of gas or liquid, between a side of ring periphery and cylinder and ring and annular groove, form sealing with the piston ring that rotatablely moves.The piston ring effect comprises sealing, regulates machine oil, heat conduction, four effects of guiding.On petrolic piston, 3 road piston rings are housed generally.Mainly be used for together below striking off the machine oil on the cylinder, prevent that machine oil from getting into the firing chamber.Last twice are mainly seal action, do not allow the gas of firing chamber to drain to crankcase, are controlled at bottom line to the leakage rate of gas, improve the thermal efficiency.Gas leakage not only can make the power of motor descend, and can make machine oil rotten.
Still gapped in the circular groove behind the ring plugging, effect provides piston ring has the small space that moves up and down in this groove.The inner side surface of common piston ring is the cylndrical surface, receives gas pressure and back pressure to do the time spent, and outer side surface can be close to cylinder wall, and the firing chamber is formed sealing.But suffered gas pressure in cylndrical surface and back pressure effect are less, make that the forces of piston ring outer side surface and cylinder wall is big inadequately, cause sealability to descend.
Summary of the invention
The purpose of the utility model is the problems referred to above that exist to existing technology, and a kind of petrolic piston ring is provided, and the utility model technical problem to be solved is to improve the sealability of piston ring.
The purpose of the utility model can realize through following technical proposal: a kind of petrolic piston ring; Motor comprises piston and cylinder; The piston upper end is provided with circular groove; This piston ring is arranged between circular groove and the cylinder, and this piston ring comprises the body of a ring-type, and the inner side surface of described body and the intersection of upper-end surface offer chamfering.
Piston is reciprocating in cylinder under the promotion of high-pressure gas, is the power producer of motor.The body of piston ring is an annular ring, is enclosed within on the circular groove gap between shutoff piston and the cylinder.Between the inner side surface of body and upper-end surface, chamfering is set, because the following corner tension force of piston ring makes whole piston ring form butterfly-shaped bending greater than last corner.The piston ring of butterfly-shaped bending can lean on cylinder wall in circular groove mutually, obtains the angle contact, has improved the sealing effect of piston ring under the effect of not stressing.Internal combustion forms pressurized gas in the firing chamber when gasoline, and piston ring receives the pressurized gas effect, and the upper-end surface of extrusion piston ring makes the dish sigmoid of piston ring obtain proofreading and correct, and can closely recline with the circular groove lower end surface; Pressurized gas also act on piston ring inner side surface and the chamfering simultaneously, make the piston ring outer side surface can with the cylinder wall comprehensive engagement, thereby reach seal action.
In above-mentioned a kind of petrolic piston ring, have a breach on the described body, described body has elasticity.Because the setting of flexible body and breach, piston ring can freely increase internal diameter when mounted, is assembled in the circular groove easily; Can return to original state again after the assembling, not cause piston ring distortion when assembling.
In above-mentioned a kind of petrolic piston ring, as preferred version, the length of described breach be the body overall circumference 1/120 to 1/36 between.Breach is excessive, influences the sealing of piston ring, thus the Design of length of breach become the body overall circumference 1/120 to 1/36 between.
In above-mentioned a kind of petrolic piston ring, as preferred version, described chamfering is 45 ° a angle.When gasoline was lighted in the firing chamber, indoor gas sharply expanded, and the pressurized gas of generation promote piston and glide along cylinder wall; In circular groove; Pressurized gas are expressed to piston ring on circular groove lower end surface and the cylinder wall equally; Prevent to burn and scurry crankcase under the indoor gas; 45 ° bevel edge is pushed by pressurized gas, makes piston ring have the trend that moves toward slit between circular groove and the cylinder wall, has improved the sealing effect of piston ring.
In above-mentioned a kind of petrolic piston ring, as another kind of scheme, described chamfering is 30 ° a angle.
In above-mentioned a kind of petrolic piston ring, the inner side surface of described piston ring is the cylndrical surface.The cylndrical surface makes and receives force direction to be substantially horizontal by the piston ring stress equalization that process time is saved than conical surface or arc surface in the cylndrical surface simultaneously.
Compared with prior art, the utility model is simple in structure, and is easy to process, through the interior chamfering of upper-end surface is set, makes piston ring form the dish sigmoid, in circular groove, obtains the angle contact, thereby improves the sealing effect of piston ring, improves the gas blowby problem of motor.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the schematic cross-section of the utility model in circular groove.
Fig. 3 is the stressed schematic representation of the utility model under gas pressure.
Among the figure, 1, body; 11, chamfering; 12, breach; 13, inner side surface; 14, upper-end surface; 15, outer side surface; 2, cylinder wall; 3, circular groove.
Embodiment
Below be the specific embodiment of the utility model and combine accompanying drawing, the technological scheme of the utility model is done further to describe, but the utility model is not limited to these embodiments.
The utility model is applied on the piston of engine, and the piston upper end is provided with circular groove 3.Like Fig. 1, Fig. 2, shown in Figure 3, this petrolic piston ring is arranged between circular groove 3 and the cylinder, and the gap between shutoff piston and the cylinder wall 2 prevents to scurry in the crankcase under the gas of cylinder.This piston ring comprises the body 1 of a ring-type, and body 1 has certain elasticity, have on the body 1 length be body 1 overall circumference 1/120 to 1/36 between breach 12.Offer 45 ° of chamferings 11 at the inner side surface 13 of body 1 and the intersection of upper-end surface 14, make annular body 1 form the dish sigmoid.The piston ring of butterfly-shaped bending is in circular groove 3, and the upper-end surface 14 of body 1 is leaned on cylinder wall 2 earlier with the angle of outer side surface 15 mutually, obtains the angle contact, and the sealing effect of piston ring under the effect of not stressing is improved.
As shown in Figure 3, the gasoline in the firing chamber is lighted the back and is produced pressurized gas, and the extrusion piston ring makes its bending obtain proofreading and correct; Piston ring upper-end surface 14 receives the downward extruding force of pressurized gas, closely reclines with circular groove 3 lower end surfaces.The inner side surface 13 of piston ring also receives the outside extruding force of pressurized gas simultaneously, makes piston ring outer side surface 15 and cylinder wall 2 closely recline.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from the spirit of the utility model or surmount the defined scope of appended claims.
Claims (6)
1. petrolic piston ring; Motor comprises piston and cylinder; The piston upper end is provided with circular groove (3), and this piston ring is arranged between circular groove (3) and the cylinder, it is characterized in that; This piston ring comprises the body (1) of a ring-type, and the inner side surface (13) of described body (1) and the intersection of upper-end surface (14) offer chamfering (11).
2. a kind of petrolic piston ring according to claim 1 is characterized in that, has a breach (12) on the described body (1), and described body (1) has elasticity.
3. a kind of petrolic piston ring according to claim 2 is characterized in that, the length of described breach (12) be body (1) overall circumference 1/120 to 1/36 between.
4. according to claim 1 or 2 or 3 described a kind of petrolic piston rings, it is characterized in that described chamfering (11) is 45 ° a angle.
5. according to claim 1 or 2 or 3 described a kind of petrolic piston rings, it is characterized in that described chamfering (11) is 30 ° a angle.
6. a kind of petrolic piston ring according to claim 5 is characterized in that the inner side surface of described piston ring (13) is the cylndrical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120265268XU CN202202977U (en) | 2011-07-26 | 2011-07-26 | Piston ring of gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120265268XU CN202202977U (en) | 2011-07-26 | 2011-07-26 | Piston ring of gasoline engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202202977U true CN202202977U (en) | 2012-04-25 |
Family
ID=45967100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120265268XU Expired - Fee Related CN202202977U (en) | 2011-07-26 | 2011-07-26 | Piston ring of gasoline engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202202977U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104937319A (en) * | 2013-01-10 | 2015-09-23 | 联邦摩高布尔沙伊德公司 | Piston ring for internal combustion engines with increased fatigue strength, and method for producing same |
| CN112594153A (en) * | 2020-12-16 | 2021-04-02 | 浙江凯途科技有限公司 | Energy-saving gas oil-free compressor and multistage compression structure thereof |
-
2011
- 2011-07-26 CN CN201120265268XU patent/CN202202977U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104937319A (en) * | 2013-01-10 | 2015-09-23 | 联邦摩高布尔沙伊德公司 | Piston ring for internal combustion engines with increased fatigue strength, and method for producing same |
| CN104937319B (en) * | 2013-01-10 | 2016-08-17 | 联邦摩高布尔沙伊德公司 | There is internal-combustion engine piston ring and the manufacture method thereof of the fatigue resistance of enhancing |
| CN112594153A (en) * | 2020-12-16 | 2021-04-02 | 浙江凯途科技有限公司 | Energy-saving gas oil-free compressor and multistage compression structure thereof |
| CN112594153B (en) * | 2020-12-16 | 2023-08-15 | 浙江凯途机电有限公司 | Energy-saving gas oil-free compressor and multi-stage compression structure thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120425 Termination date: 20130726 |