CN205977439U - Low fricative piston assembly - Google Patents
Low fricative piston assembly Download PDFInfo
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- CN205977439U CN205977439U CN201620793874.1U CN201620793874U CN205977439U CN 205977439 U CN205977439 U CN 205977439U CN 201620793874 U CN201620793874 U CN 201620793874U CN 205977439 U CN205977439 U CN 205977439U
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- piston
- angle
- oil
- low friction
- piston component
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Abstract
The utility model provides a low fricative piston assembly, relates to automobile engine's piston. Set up cloth oil angle and frizing angle under, on the plane respectively through the last plane that parallels at the oil ring ring body, better completion cloth oil and frizing, make oil consumption obtain better control, set up the coating at piston skirt portion, reduced the piston wearing and tearing, reduce piston friction loss, through reducing oil ring tension, reduce the friction loss of oil ring, after adopting the DLC coating at the piston pin surface, hardness promotes by a wide margin, has reduced coefficient of friction, has reduced fuel consumption.
Description
Technical field
This utility model is related to the piston of automobile engine, particularly to a kind of piston component of low friction.
Background technology
At present in automobile engine industry, piston component includes the piston and piston pin with piston ring, wherein piston ring
Including compression ring and oil ring.The position producing friction is all to occur in movement parts outer surface.
Piston skirt is provided with equadag coating, molybdenum bisuphide coating, the combination of any one or several in spelter coating, coating
Purpose be exactly to increase lubrication, reduce engine start when abrasion.
Piston pin is the sole component connecting piston and connecting rod, and it can pass through key seat and work the explosion pressure on piston
Plug pin passes to connecting rod, in motion, will necessarily there is fretting wear.Wrist pin materials are steel, and forging forms, outer surface machine
Plus form, machining accuracy is very high.All the time, as the process of surface treatment of piston pin of vehicle, mainly to improve wearability
And for the purpose of the anticol property, using techniques such as the relatively low plating of price, conversion film, salt bath process, and oxidation processes；From 20 generation
Record the later stage nineties, begin with Nitrizing Treatment it is possible to meet the requirement of pin surface hardness, intensity and toughness.At present
In order to meet the fuel oil regulation constantly tightened up and emission regulation demands, and also to the reply diversified demand of fuel oil, and
With the rise of fuel price, on the premise of user pays attention in again to vehicle fuel index, fuel oil regulation and emission regulation demands
Can be increasingly stricter, reduce frictional force, play a role in realizing regulation.
Utility model content
In view of the shortcomings of the prior art, this utility model provides a kind of piston component of low friction, it is reasonable in design,
Structure is simple, is easy to safeguard.
This utility model be employed technical scheme comprise that：A kind of piston component of low friction, including with head and skirt section
Piston and piston pin, the skirt section of piston be additionally provided with oil ring ring body it is characterised in that oil ring ring body include with cloth oil angle
And the upper plane at frizing angle, lower plane and be arranged at the connector with spill port between said two devices.
As a kind of optimal way at cloth of the present utility model oil angle, the upper topside of upper plane and the first camber line form first
Knuckle, the first camber line end connects step curve, and the ladder angle on step curve is cloth oil angle；
As a kind of optimal way at frizing angle of the present utility model, the end of step curve connects the second camber line and is formed
Nose-shaped angle is frizing angle, and the second camber line connects the 3rd camber line and forms the second transition angle.
As the further preferred embodiment at ladder angle of the present utility model, described ladder angle is 90 degree.
As the further preferred embodiment at frizing angle of the present utility model, described nose-shaped angle is less than 90 degree.
As another kind of optimal way at cloth of the present utility model oil angle and frizing angle, the cloth oil in upper plane and lower plane
Angle is identical with frizing corner structure.
As a kind of optimal way of plane on this utility model and lower plane, the surface of described upper plane and lower plane
Roughness should be less than 1 micron.
As a kind of optimal way of this utility model piston skirt, outside described skirt section, it is provided with PVD coating.
As a kind of optimal way of this utility model spill port, described spill port is strip hole.
As a kind of optimal way of this utility model piston pin, outside described piston pin, it is provided with DLC coating.
The utility model has the advantages that：The piston component of this low friction, by the parallel upper plane in oil ring ring body,
Cloth oil angle and frizing angle are respectively provided with lower plane, preferably complete cloth oil and frizing, so that oil consumption is obtained preferably
Control；Coating is set in piston skirt, decreases piston wear, reduce piston friction loss, by reducing oil ring tension force, reduce
The friction loss of oil ring；After adopting DLC coating in piston pin outer surface, hardness is significantly lifted, and reduces coefficient of friction,
Reduce fuel consumption.
Brief description
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
In required use accompanying drawing be briefly described it should be apparent that, drawings in the following description are only of the present utility model
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, also can be according to these
Accompanying drawing obtains other accompanying drawings.
Fig. 1 is this utility model embodiment piston assembly structure schematic diagram；
Fig. 2 is this utility model embodiment piston skirt structural representation；
Fig. 3 is oil ring ring body structurc schematic diagram in this utility model embodiment；
Fig. 4 is the close-up schematic view of this utility model Fig. 3；
Fig. 5 is the sectional view of this utility model piston；
In figure number explanation is as follows：1 piston, 2 first gas rings, 3 second gas rings, 4 oil ring ring bodies, 4-1 semicircular arc groove, 4-
2 springs, 4-3 spill port, 4-4 opened gap, the upper plane of 4-5,4-6 lower plane, 4-7 connector, 4-8 upper topside, 4-9 first arc
Line, 4-10 step curve, 4-11 second camber line, 4-12 the 3rd camber line, 4-13 First Transition fillet, 4-14 ladder angle, 4-15
Nose-shaped angle, 4-16 second knuckle, 5 piston pins, 5-1 piston pin body, 5-2DLC coating, 6 skirt sections.
Specific embodiment
So that above-mentioned purpose of the present utility model, feature and advantage is become apparent from understandable, below in conjunction with the accompanying drawings 1 ~ 5 and tool
Body embodiment is described in further detail to this utility model.
Embodiment 1：
The piston component of the low friction in the present embodiment, as depicted in figs. 1 and 2, including the piston 1 with head and skirt section
With piston pin 5, it is additionally provided with first gas ring 2, second gas ring 3 and oil ring ring body 4 in the skirt section 6 of piston.Its first gas ring 2 is bucket
Face straight-flanked ring, that is, outer face is cartridge type.Carry out PVD process after the nitridation of outer face, increased intensity, improve wearability.Second
Compression ring 3 is taper-face ring, and outer end is trapezoidal, outer face bonderizing, and conical surface wedge angle frizing effect is good.Oil ring ring body 4 adopts cast iron
Material, spring 4-2 adopts low-tension spring, in the case that the length that ensure that oil ring support spring is constant, increases the length of pitch,
Thus reducing the elastic force of spring 4-2 itself.Elastic force reduces, and just decreases with the friction loss of cylinder body during ring work.
Oil ring ring body 4 adopts casting, and oil ring ring body 4 itself does not have elastic force, and the elastic force of oil ring ring body 4 comes from
Spring 4-2, as shown in figure 3, spring 4-2 is arranged in semicircular arc groove 4-1, spring 4-2 adopts variable-section variable pitch pattern, bullet
The docking of spring 4-2 two ends is connect with tethering.After there is semicircular arc groove 4-1, the rigidity of ring weakens, more preferable to the tracing ability of cylinder body.Work
When making, opened gap 4-4, do not allow the imagination that there is closure.
The oil ring ring body 4 of the present embodiment is included with cloth oil angle and upper plane 4-5 being parallel to each other at frizing angle, lower plane
4-6 and be arranged at plane 4-5, the lower plane 4-6 connector 4-7 with spill port 4-3 therebetween.
Embodiment 2：
Oil ring ring body 4 in the present embodiment, using ladder angle 4-14 as cloth oil angle, is divided using nose-shaped angle 4-15 as frizing angle
It is not arranged in upper plane 4-5 and lower plane 4-6 being parallel to each other, as shown in figure 4, wherein, upper plane 4-5 and lower plane 4-6
Surface roughness Ra should be less than 1 micron.Using strip hole as spill port 4-3 on connector 4-7, its machine adds simply, favorably
In oil return, the present embodiment arranges 8 spill port 4-3.Cloth oil angle concrete structure in the present embodiment is as follows：
The upper topside 4-8 of upper plane 4-5 and the first camber line 4-8 forms the First Transition fillet 4- that can reduce stress concentration
13, the first camber line 4-9 end connects step curve 4-10, and the ladder angle 4-14 on step curve 4-10 is 90 degree, up
When mainly complete cloth oil, be not in machine oil in angle.
Frizing angle concrete structure in the present embodiment is as follows：
The end of step curve 4-10 connects the second camber line 4-11 and forms nose-shaped angle 4-15, and the angle of nose-shaped angle 4-15 is little
In 90 °, mainly when descending, due to the presence of nose-shaped angle 4-15, can preferably complete frizing, can also store in ditch and scrape
The machine oil coming, prevents machine oil from altering upwards.Second camber line 4-11 connects the 3rd camber line 4-12 and forms the second knuckle 4-16.
Frizing angle in upper plane 4-5 with lower plane 4-6 is identical with cloth oil corner structure, upper and lower twice scraping angle
Cloth oil and frizing can preferably be completed.In order to improve the wearability of outer face, in the outer face of oil ring ring body 3 also using nitridation
Process.
Embodiment 3：
The present embodiment is with the difference of embodiment 1 and embodiment 2：It is provided with PVD coating outside skirt section 6.In piston pin
It is provided with DLC coating 5-2, as shown in Figure 3 outside body 5-1.
The shape of the piston pin 5 in the present embodiment is cylindrical profile, and endoporus passes through two ends extrusion molding, and with median plane is
Symmetrical structure, the molding by forging, inner hole precision does not have special custom to require, and piston pin outer surface precision requires very high, by machine
Plus just can complete.Outer surface arranges DLC coating 5-2, and the manufacture method of DLC coating is to adopt physical vapour deposition (PVD)（PVD）With
Chemical vapor deposition（CVD）Outside method spraying piston pin body 5-1.Piston pin 5 surface is exactly in PVD method, using negative electrode
Arc ions metallikon is formed not hydrogeneous but hardness, close to the tetrahedral amorphous carbon coating of diamond, must utilize sputtering method shape
Become hydrogeneous hydrogenated amorphous carbon coating, and amorphous carbon coating.
Although the foregoing describing specific embodiment of the present utility model, those skilled in the art in the art should
Work as understanding, these are merely illustrative of, various changes or modifications can be made to these embodiments, new without departing from this practicality
The principle of type and essence.Scope of the present utility model is only limited by the claims that follow.
Claims (9)
1. a kind of piston component of low friction, including the piston with head and skirt section and piston pin, also sets in the skirt section of piston
It is equipped with oil ring ring body it is characterised in that oil ring ring body includes with cloth oil angle and the upper plane at frizing angle, lower plane and is arranged at
The connector with spill port between said two devices.
2. the piston component of low friction as claimed in claim 1 is it is characterised in that the upper topside of upper plane and the first arc line shaped
Become First Transition fillet, the first camber line end connects step curve, the ladder angle on step curve is cloth oil angle；
The end of step curve connects the second camber line and forms nose-shaped angle as frizing angle, and the second camber line connects the 3rd camber line and formed
Second transition angle.
3. the piston component of low friction as claimed in claim 2 is it is characterised in that described ladder angle is 90 degree.
4. the piston component of low friction as claimed in claim 2 is it is characterised in that described nose-shaped angle is less than 90 degree.
5. low friction as claimed in claim 1 piston component it is characterised in that on upper plane and lower plane cloth oil angle and
Frizing corner structure is identical.
6. the piston component of the low friction as described in claim 2～5 any claim is it is characterised in that described is upper flat
Face should be less than 1 micron with the surface roughness of lower plane.
7. the piston component of low friction as claimed in claim 1 is it is characterised in that be provided with PVD coating outside described skirt section.
8. the piston component of low friction as claimed in claim 1 is it is characterised in that described spill port is strip hole.
9. the piston component of low friction as claimed in claim 1 applies it is characterised in that being provided with DLC outside described piston pin
Layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620793874.1U CN205977439U (en) | 2016-07-27 | 2016-07-27 | Low fricative piston assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620793874.1U CN205977439U (en) | 2016-07-27 | 2016-07-27 | Low fricative piston assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205977439U true CN205977439U (en) | 2017-02-22 |
Family
ID=58027661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620793874.1U Active CN205977439U (en) | 2016-07-27 | 2016-07-27 | Low fricative piston assembly |
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| CN (1) | CN205977439U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106065825A (en) * | 2016-07-27 | 2016-11-02 | 华晨汽车集团控股有限公司 | A kind of piston component of low friction |
-
2016
- 2016-07-27 CN CN201620793874.1U patent/CN205977439U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106065825A (en) * | 2016-07-27 | 2016-11-02 | 华晨汽车集团控股有限公司 | A kind of piston component of low friction |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |