CN204458077U - Diesel engine piston - Google Patents
Diesel engine piston Download PDFInfo
- Publication number
- CN204458077U CN204458077U CN201520137285.3U CN201520137285U CN204458077U CN 204458077 U CN204458077 U CN 204458077U CN 201520137285 U CN201520137285 U CN 201520137285U CN 204458077 U CN204458077 U CN 204458077U
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- CN
- China
- Prior art keywords
- skirt section
- head
- piston
- cross
- diesel engine
- 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
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses a kind of diesel engine piston, comprise head, skirt section and key seat, described head is provided with multiple circular groove in order to ring installation, the Xray films both sides in described skirt section are the arc of evagination, and the cross-sectional diameter of axial arbitrary position, described skirt section is greater than the cross-sectional diameter of the axial arbitrary position of head.Piston operationally, only have the place that skirt section cross section protrudes most to be worn, and other places can not be worn, and piston subcylindrical in operating conditions, keeps little and uniform gap with cylinder body simultaneously.
Description
Technical field
The utility model relates to a kind of diesel engine piston.
Background technique
Diesel engine piston comprises head, skirt section and key seat.Lower head is provided with some circular grooves near position, skirt section, and in order to ring installation, piston crown also has firing chamber in order to work done of burning; Skirt section play the guiding role for piston itself in the cylinder; Bear side pressure; The partial heat born by piston passes to cylinder wall; Controller oil consumption etc.; Piston crown gaseous-pressure by passing to wrist pin, and then to be delivered on connecting rod and bent axle by key seat.During existing piston Problems existing, piston ring is easy to wear, and then causes the seamed edge wearing and tearing of circular groove on piston particularly circular groove, affects the sealing of piston and cylinder body.
Model utility content
In view of this, the technical problems to be solved in the utility model is to provide a kind of diesel engine piston, piston and cylinder body seal good.
Diesel engine piston of the present utility model, comprise head, skirt section and key seat, described head is provided with multiple circular groove in order to ring installation, the Xray films both sides in described skirt section are the arc of evagination, and the cross-sectional diameter of axial arbitrary position, described skirt section is greater than the cross-sectional diameter of the axial arbitrary position of head.
Further, the sidewall between the corresponding bottom of described head two circular grooves has and pulls down logical annular breach.
Further, described key seat has straight hole, the sidewall of described straight hole is provided with circular groove.
The beneficial effects of the utility model: diesel engine piston of the present utility model, comprise head, skirt section and key seat, described head is provided with multiple circular groove in order to ring installation, the Xray films both sides in described skirt section are the arc of evagination, and the cross-sectional diameter of axial arbitrary position, described skirt section is greater than the cross-sectional diameter of the axial arbitrary position of head.Piston operationally, only have the place that skirt section cross section protrudes most to be worn, and other places can not be worn, and piston subcylindrical in operating conditions, keeps little and uniform gap with cylinder body simultaneously.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described.
Fig. 1 is schematic front view of the present utility model;
Fig. 2 is schematic side view of the present utility model;
Fig. 3 is I portion zoomed-in view in Fig. 1;
Fig. 4 is A-A sectional view in Fig. 2.
Embodiment
Below with reference to accompanying drawing, the utility model is described in detail, as shown in the figure: the diesel engine piston of the present embodiment, comprise head 1, skirt section 2 and key seat 3, the top of described head 1 is firing chamber, head 1 is provided with multiple circular groove 11 in order to ring installation, the Xray films both sides in described skirt section 2 are the arc of evagination, it should be noted that, the curvature of this arc is very little, so that the naked eyes of people look it is straight line instead of arc, and the cross-sectional diameter of axial arbitrary position, described skirt section 2 is greater than the cross-sectional diameter of the axial arbitrary position of head 1.Even along short transverse temperature distributing disproportionation during pistons work, more higher close to head temperature, and annular groove portion temperature gradient is larger than skirt section.The Xray films both sides in skirt section 2 are the arc of evagination, whole piston only has the place that skirt section cross section protrudes most to be worn, and other places can not be worn, the circular groove 11 of head 1 also can not be worn simultaneously, therefore, the swell increment of each cross section is also different, up big and down small, for making piston subcylindrical in operating conditions, keep little and uniform gap, piston makes smaller bigger a series of profiles above below, and namely the cross-sectional diameter of axial arbitrary position, skirt section 2 is greater than the cross-sectional diameter of the axial arbitrary position of head 1.
As the further improvement of technique scheme, the sidewall between the corresponding bottom of described head 1 two circular grooves has and pulls down logical annular breach 12.Can form accumulator between piston ring in this annular breach 12 and bottom circular groove and cylinder body, lubricant oil, in accumulator, lubricates between piston ring and cylinder body, reduces the friction between piston ring and cylinder body, improves Service Life of Piston Ring.
As the further improvement of technique scheme, described key seat 3 has straight hole 31, the sidewall of described straight hole 31 is provided with circular groove 32.Straight hole 31 is used for settling wrist pin, and stores lubricant oil in circular groove 32 equally, reduces the fretting wear between circular groove 32 and wrist pin.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (3)
1. a diesel engine piston, comprise head (1), skirt section (2) and key seat (3), described head (1) is provided with multiple circular groove in order to ring installation (11), it is characterized in that: the Xray films both sides of described skirt section (2) are the arc of evagination, the cross-sectional diameter of described skirt section (2) axial arbitrary position is greater than the cross-sectional diameter of head (1) axial arbitrary position.
2. diesel engine piston according to claim 1, is characterized in that: the sidewall between described head (1) corresponding bottom two circular grooves has and pulls down logical annular breach (12).
3. diesel engine piston according to claim 2, is characterized in that: described key seat (3) has straight hole (31), and the sidewall of described straight hole (31) is provided with circular groove (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520137285.3U CN204458077U (en) | 2015-03-11 | 2015-03-11 | Diesel engine piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520137285.3U CN204458077U (en) | 2015-03-11 | 2015-03-11 | Diesel engine piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204458077U true CN204458077U (en) | 2015-07-08 |
Family
ID=53664978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520137285.3U Expired - Fee Related CN204458077U (en) | 2015-03-11 | 2015-03-11 | Diesel engine piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204458077U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108691685A (en) * | 2018-08-01 | 2018-10-23 | 台州环洋机电有限公司 | A kind of T-type piston on general gasoline engines |
-
2015
- 2015-03-11 CN CN201520137285.3U patent/CN204458077U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108691685A (en) * | 2018-08-01 | 2018-10-23 | 台州环洋机电有限公司 | A kind of T-type piston on general gasoline engines |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20150708 Termination date: 20170311 |