CN202220673U - Engine piston - Google Patents
Engine piston Download PDFInfo
- Publication number
- CN202220673U CN202220673U CN2011203028710U CN201120302871U CN202220673U CN 202220673 U CN202220673 U CN 202220673U CN 2011203028710 U CN2011203028710 U CN 2011203028710U CN 201120302871 U CN201120302871 U CN 201120302871U CN 202220673 U CN202220673 U CN 202220673U
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- Prior art keywords
- oil
- piston
- engine piston
- ring groove
- draining hole
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model provides an engine piston, which belongs to the vehicle technology field, and can be used to solve problems of present engines such as carbon formation in a combustion chamber, powerless automobile acceleration, and increasing of oil consumption caused by the lubricating oil in an engine piston oil ring groove, which is easy to jump into the combustion chamber. The engine piston provided in the utility model comprises a main body, an oil ring groove disposed in a side wall of the main body, a plurality of oil discharging holes disposed in the main body, and inlet ports of the oil discharging holes are disposed in a lower side surface of the oil ring groove. By using the engine piston provided in the utility model, the lubricating oil can be prevented from jumping into the engine combustion chamber. The engine piston has advantages of simple structure, convenient manufacturing, and strong versatility.
Description
Technical field
The utility model belongs to the vehicle technology field, relates to a kind of engine piston.
Background technique
Motor is one of topmost constituent element of automobile as the power producer of automobile.And piston is motor car engine " heart ", bears the mechanical load and the heat load of alternation.In internal-combustion engine, piston work done under the promotion of high-temperature high-pressure fuel gas, and pass to connecting rod through wrist pin and order about the engine crankshaft rotation.The rotating speed of motor is higher, and the back and forth movement frequency of piston in cylinder is also higher, in order to guarantee the proper motion of piston, and must be to carrying out effective lubricating between piston and the engine cylinder wall.Simultaneously, to prevent that also lubricant oil from scurrying into engine chamber.Usually all be provided with an oil ring groove on the piston, the oil ring groove bottom has the draining hole, in oil ring groove, is provided with oil ring.Oil ring can strike off lubricant oil residual on the cylinder wall, and the lubricant oil that scrapes is discharged in the engine sump tank through the draining hole of oil ring groove bottom.
Yet, because piston to-and-fro motion in cylinder is very fast, though existing piston has draining hole, emptying scarce capacity in its oil ring groove bottom.Lubricant oil accumulates in the oil ring groove easily, makes the oil pressure between piston and the cylinder wall raise the oversize piston resistance to motion.The lubricant oil of assembling is simultaneously scurried in the firing chamber easily, participates in burning with mixed gas, and the carbon distribution of firing chamber is increased, cause auto idle speed unstable, quicken adverse consequencess such as unable, oil consumption rising, exhaust emissions exceed standard.
In order to prevent that effectively lubricant oil from scurrying into the firing chamber, there is the people that existing engine piston is improved.A kind of piston [notice of authorization number: CN2878811Y is disclosed like the Chinese patent document; Application number 200620099830.5], this piston integral body is made up of piston body, two compression rings and grommet thereof and two oil rings, and piston body is provided with three annular grooves; Comprise a compression and two oil ring grooves, compression is last, and two oil ring grooves are following; The lower wall of upper end oil ring groove and the upper wall of lower end oil ring groove are equipped with several grooved oilholes, lead to piston body inside, and two compression rings are installed in the compression; Be provided with grommet in the compression ring, be symmetrically installed with two oil rings in two oil ring grooves.This piston is on the basis of existing piston, through setting up an oil ring groove, better the lubricant oil on the cylinder wall is struck off and is discharged in the oil sump.Though can improve the drawback that lubricant oil gets into combustion chambers burn through such mode, the complex structure of this cylinder, difficulty of processing is big, the also corresponding raising of manufacture cost.
Summary of the invention
The purpose of the utility model is to have the problems referred to above to existing technology, has proposed a kind of lubricant oil of can effectively avoiding and has scurried into the engine piston of engine chamber.
The purpose of the utility model can realize through following technical proposal: a kind of engine piston; Comprise body; Have oil ring groove on the described body sidewall, have several draining holes on the described body, the import in described draining hole is positioned on the downside of oil ring groove.
The bottom that present engine piston is employed in its oil ring groove is offered several draining holes and is discharged the lubricant oil in the oil ring groove, emptying scarce capacity.This engine piston has been set up several draining holes on the downside of piston oil annular groove on the basis of present engine piston.Through such design; Increased the draining ability of oil ring groove greatly; Lubricant oil in the oil ring groove can in time be discharged from the draining hole swimmingly; Prevent too much lubricant oil from accumulating in the oil ring groove and make parts of lubricating oil scurry into the firing chamber, thereby avoid lubricant oil waste and combustion-chamber deposit, and promote automobile power.Simultaneously, the lubricant oil in the oil ring groove can be discharged smoothly, has reduced the oil pressure between piston and the cylinder wall, has reduced the resistance to motion of piston, has reduced the power loss of motor.
In above-mentioned engine piston, described draining hole is a straight hole, and the axis parallel of the axle center in draining hole and body.
The draining hole is set to the straight hole with the axis parallel of body, makes the convenient processing in draining hole.Certainly, the draining hole also can be processed as other shape according to actual needs.
In above-mentioned engine piston, the forward and backward both sides of described body have the groove of weight reduction, and the outlet in described draining hole is positioned on the side of groove.
Piston and arranged on left and right sides face bears pressure when compression stroke and working stroke, the front and back side of the piston only part of pruning is formed groove, through weight reduction, has reduced the reciprocal inertia force of piston, reduces the power loss of motor.The outlet in draining hole is positioned on the side of groove, and when piston motion, the lubricant oil of letting out under the draining hole can be splashed in the piston pin boss of groove side, and wrist pin is lubricated.
In above-mentioned engine piston, the draining hole number of the forward and backward both sides of described body equates.
In above-mentioned engine piston, the draining hole of the forward and backward both sides of described body is symmetrically distributed along the body axle center.The draining hole is set to be symmetrically distributed along the body axle center; The draining number of perforations of forward and backward both sides equates simultaneously; Piston mass is evenly distributed, improves the stability that piston moves in cylinder, and can reduce the friction between piston and the cylinder wall; Prolong the working life of piston, reduce the power loss of motor simultaneously.
In above-mentioned engine piston, the quantity in described draining hole is 2 or 4 or 6 or 8.The draining hole is set to even number, makes things convenient for the symmetrical distribution in draining hole.
Compared with prior art, this engine piston has the following advantages:
1, this engine piston improves through simple on the basis of existing piston; Solve the interior lubricant oil of existing piston oil annular groove and scurried into the drawback of firing chamber easily; Guarantee the high-efficient operation of motor, avoid the waste of lubricant oil, it is convenient to improve simultaneously; Can not increase the cost of production of piston, be suitable for large range promotion use.
2, the draining pore size distribution of this engine piston symmetry, piston mass is evenly distributed, and piston motion stability is high, has prolonged the working life of piston.
3, this engine piston can effectively avoid lubricant oil to scurry into engine chamber, has advantages such as simple in structure, easily manufactured, highly versatile simultaneously.
Description of drawings
Fig. 1 is the perspective view of this engine piston.
Fig. 2 is this engine piston master TV structure schematic representation.
Fig. 3 is the sectional structure schematic representation of A-A among Fig. 2.
Among the figure, 1, body; 2, oil ring groove; 3, draining hole; 4, groove; 5, piston pin boss.
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.
Like Fig. 1, Fig. 2, shown in Figure 3, this engine piston comprises parts such as oil ring groove 2, draining hole 3, groove 4, piston pin boss 5.
Specifically, this engine piston comprises body 1, and body 1 piston crown offers two to three compressions, an oil ring groove 2 from top to bottom successively.Be placed with compression ring in the compression, compression ring is used for the indoor inflammable gas of sealing combustion.Be placed with oil ring in the oil ring groove 2, oil ring is used for striking off lubricant oil residual on the cylinder wall, on cylinder wall, spreads one deck lubricant oil simultaneously equably, to reduce the friction between piston and the cylinder wall, reduces the engine power loss.The lubricant oil that oil ring scrapes gets into oil ring groove 2, and is discharged in the oil sump of motor through the draining hole 3 of oil ring groove 2.Piston and arranged on left and right sides face bears pressure when compression stroke and working stroke; In order to save material and fabricating cost; This engine piston forms groove 4 with the front and back side of piston only 1 part of pruning; Through weight reduction, reduced the reciprocal inertia force of piston, improved the useful horsepower of motor.
This engine piston oil-controlled ring groove 2 in order to increase the emptying ability of oil ring groove 2, also offers several draining hole 3 at oil ring groove 2 downsides except offering the draining hole 3 in its bottom.This draining hole 3 is and the straight hole of the axis parallel of piston only 1 that the straight hole filler opening is positioned on the downside of oil ring groove 2, and the axis parallel of the axle center of straight hole and body 1.For easy to process, usually all the draining hole 3 of oil ring groove 2 downsides is arranged on both sides, piston only 1 front and back, the outlet in draining hole 3 is positioned on the side of pistion recess 4.Draining hole 3 quantity of oil ring groove 2 are indefinite, and the position also can random distribution.But in order to make the engine piston mass distribution even, all draining hole 3 is symmetrically distributed along piston only 1 axle center usually, draining hole 3 numbers of both sides, body 1 front and back equate simultaneously.The number in the draining hole 3 of oil ring groove 2 downsides can be 2 or 4 or 6 or 8, and as optimal case, the draining hole of this engine piston oil-controlled ring groove 2 downsides is 4.
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.
Although this paper has used terms such as body 1, oil ring groove 2, draining hole 3, groove 4 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain the essence of the utility model more easily; It all is contrary with the utility model spirit being construed to any additional restriction to them.
Claims (6)
1. an engine piston comprises body (1), has oil ring groove (2) on described body (1) sidewall, it is characterized in that, has several draining holes (3) on the described body (1), and the import in described draining hole (3) is positioned on the downside of oil ring groove (2).
2. engine piston according to claim 1 is characterized in that, described draining hole (3) is a straight hole, and the axis parallel of the axle center of draining hole (3) and body (1).
3. engine piston according to claim 1 and 2 is characterized in that, the forward and backward both sides of described body (1) have the groove (4) of weight reduction, and the outlet in described draining hole (3) is positioned on the side of groove (4).
4. engine piston according to claim 3 is characterized in that, draining hole (3) quantity of the forward and backward both sides of described body (1) equates.
5. engine piston according to claim 4 is characterized in that, the draining hole (3) of the forward and backward both sides of described body (1) is symmetrically distributed along body (1) axle center.
6. engine piston according to claim 4 is characterized in that, the quantity in described draining hole (3) is 2 or 4 or 6 or 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203028710U CN202220673U (en) | 2011-08-19 | 2011-08-19 | Engine piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203028710U CN202220673U (en) | 2011-08-19 | 2011-08-19 | Engine piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202220673U true CN202220673U (en) | 2012-05-16 |
Family
ID=46042700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203028710U Expired - Fee Related CN202220673U (en) | 2011-08-19 | 2011-08-19 | Engine piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202220673U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486178A (en) * | 2017-08-29 | 2019-11-22 | 熵零技术逻辑工程院集团股份有限公司 | A kind of cylinder jacket of diesel engine and the cylinder piston mechanism using it |
-
2011
- 2011-08-19 CN CN2011203028710U patent/CN202220673U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486178A (en) * | 2017-08-29 | 2019-11-22 | 熵零技术逻辑工程院集团股份有限公司 | A kind of cylinder jacket of diesel engine and the cylinder piston mechanism using it |
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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: 20120516 Termination date: 20130819 |