CN208816241U - Wear-resisting lubricated type engine piston - Google Patents
Wear-resisting lubricated type engine piston Download PDFInfo
- Publication number
- CN208816241U CN208816241U CN201821334577.6U CN201821334577U CN208816241U CN 208816241 U CN208816241 U CN 208816241U CN 201821334577 U CN201821334577 U CN 201821334577U CN 208816241 U CN208816241 U CN 208816241U
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- China
- Prior art keywords
- piston
- hole
- wear
- oil return
- skirt section
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- 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
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Abstract
The utility model discloses a kind of wear-resisting lubricated type engine pistons, including piston only, compression and oil ring groove are from top to bottom successively arranged on the head of the piston only, multiple oil return holes are equipped in the oil ring groove, carburized layer is equipped on the skirt section lateral wall of the piston only, the skirt section outer wall of the piston only is equipped with multiple circular holes, and the circular hole includes the through-hole and blind hole for alternateing setting.The circular hole is that circulating type is arranged and is from top to bottom equipped with four circles, and the aperture of each circle circular hole is from top to bottom gradually increased.The oil return hole is in tilt down setting.The present invention can effectively improve the wear-resisting property in piston only skirt section, and further increase the oil return effect of piston, so that more lubricating when piston motion, to promote the stability and service life of piston action.
Description
Technical field
The present invention relates to engine transmission components, are specifically related to a kind of engine piston.
Background technique
Engine piston is parts reciprocating in diesel engine cylinder body, and main function is subject in cylinder
Combustion pressure, and this pressure is transmitted to crankshaft by piston pin and connecting rod.General piston is equipped with compression and oil ring groove,
Generally existing following defects: the skirt section wear-resisting property of piston is poor, so as to cause piston vibrating increasing, and when making piston action
Noise becomes larger and transmission efficiency reduces, and " scuffing of cylinder bore " is likely to occur when more serious；Oil return hole on piston is usually horizontal design,
In actual use, the lubricating oil that oil ring scrapes can not be flowed into very easily in oil return hole, and oil return effect compares one
As, lubricity it is inadequate.
Summary of the invention
In view of the deficiency of background technique, technical problem to be solved by the invention is to provide one kind can effectively promote piston skirt
The wear-resisting property in portion, and further increase the oil return effect of piston so that when piston motion more lubrication, noise become smaller it is wear-resisting
Lubricated type engine piston.
The purpose of the present invention is realized by following technical solution: wear-resisting lubricated type engine piston, including piston only,
It is from top to bottom successively arranged compression and oil ring groove on the head of the piston only, is equipped with multiple oil returns in the oil ring groove
Hole, is equipped with carburized layer on the skirt section lateral wall of the piston only, and the skirt section outer wall of the piston only is equipped with multiple circles
Hole, the circular hole include the through-hole and blind hole for alternateing setting.
By adopting the above technical scheme, the invention has the benefit that 1. in the skirt section of piston only by being equipped with embeddedly
Carburized layer, since carburized layer heat distortion amount and extrusion deformation degree are small compared with the piston only of metal material, and carburized layer is wear-resisting
Performance is also preferable, and the gap for preventing piston from occurring its skirt section and cylinder wall in actual use is too small and to influence piston dynamic
Make, while promoting the skirt section wear-resisting property of piston only；2. it is wear-resisting effectively to promote its body surface referring to the densely covered shrinkage pool of organism surface
Circular hole is circumferentially arranged in the skirt section outer wall of piston only in the principle of performance, can effectively improve its wear-resisting property, reduce noise,
And this circular hole includes the through-hole being arranged alternately and blind hole, ensure that the stability of piston operation, and cooperates original profit in cylinder
Lubricating oil, additionally it is possible to obtain effective drag-reduction effect；3. oil return hole is in tilting down setting, so that the lubricating oil scraped by oil ring can be with
It is rapidly flowed into piston only using self gravity, accelerates circulation of the lubricating oil inside and outside piston, improve its greasy property.
To promote the stability and service life of its movement.
In order to make carburized layer play preferable effectiveness, the carburized layer with a thickness of 5 to 10 decimillimeters.In order to improve oil return hole
Oil return effect, for the oil return hole in tilting down setting, the angle that tilts down of the oil return hole is 5 to 10 to spend.In order to match
The characteristics of Skirt Lubrication oil film for closing piston only is wedge shape distribution, the circular hole are that circulating type is arranged and is from top to bottom equipped with
The aperture of four circles, each circle circular hole is from top to bottom gradually increased.
Detailed description of the invention
Below by way of drawings and embodiments, the present invention is described in further detail.
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the cross-sectional view in the direction A-A of Fig. 1.
Fig. 3 is the cross-sectional view (wherein a line circular hole) at the circular hole position in Fig. 1；
Specific embodiment
As shown in Figure 1 to Figure 3, the wear-resisting lubricated type engine piston of the present invention, including piston only is (by its head 1, skirt section
5 are constituted), it is from top to bottom successively arranged compression 2 and oil ring groove 3 on the head of the piston only 1, is set in the oil ring groove 3
There are multiple oil return holes 4,5 lateral wall of skirt section of the piston only is equipped with carburized layer 7 (embedded), the skirt of the piston only
5 outer wall of portion is equipped with multiple circular holes 6 (concave hole type), is from top to bottom equipped with four circles around the circular hole 6 of setting, the aperture of circular hole 6 by
It is gradually increased under, each ring includes through-hole 61 and blind hole 62 around the circular hole 6 of setting, and the through-hole 61 and blind hole 62 alternate
It is arranged (as shown in Figure 3).That is: the described circular hole 6 is that circulating type is arranged and is from top to bottom equipped with four circles, the hole of each circle circular hole
Diameter is from top to bottom gradually increased.
The carburized layer with a thickness of 5 to 10 decimillimeters (i.e. 0.5 to 1.0 millimeter, wherein being preferred with 7 decimillimeters)；The oil return
In setting is tilted down, tilting down angle is 5 to 10 degree (being wherein preferred with 8 degree) in hole 4.
Claims (3)
1. wear-resisting lubricated type engine piston, including piston only are from top to bottom successively set on the head (1) of the piston only
There are compression (2) and oil ring groove (3), is equipped with multiple oil return holes (4) in the oil ring groove (3), it is characterised in that: in the piston
Skirt section (5) lateral wall of ontology is equipped with carburized layer (7), and skirt section (5) outer wall of the piston only is equipped with multiple circular holes
(6), the circular hole (6) includes the through-hole (61) and blind hole (62) for alternateing setting.
2. wear-resisting lubricated type engine piston according to claim 1, it is characterised in that: the thickness of the carburized layer (7)
For 5 to 10 decimillimeters.
3. wear-resisting lubricated type engine piston according to claim 1 or 2, it is characterised in that: the oil return hole (4) be in
Under be obliquely installed, the oil return hole (4) tilt down angle be 5 to 10 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821334577.6U CN208816241U (en) | 2018-08-15 | 2018-08-15 | Wear-resisting lubricated type engine piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821334577.6U CN208816241U (en) | 2018-08-15 | 2018-08-15 | Wear-resisting lubricated type engine piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208816241U true CN208816241U (en) | 2019-05-03 |
Family
ID=66273797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821334577.6U Expired - Fee Related CN208816241U (en) | 2018-08-15 | 2018-08-15 | Wear-resisting lubricated type engine piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208816241U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108979889A (en) * | 2018-08-15 | 2018-12-11 | 浙江东新动力有限公司 | Wear-resisting lubricated type engine piston |
-
2018
- 2018-08-15 CN CN201821334577.6U patent/CN208816241U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108979889A (en) * | 2018-08-15 | 2018-12-11 | 浙江东新动力有限公司 | Wear-resisting lubricated type engine piston |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190503 |