CN203488268U - Double-ring-groove ring-inlaid diesel piston with inner cooling oil path - Google Patents
Double-ring-groove ring-inlaid diesel piston with inner cooling oil path Download PDFInfo
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- CN203488268U CN203488268U CN201320562599.9U CN201320562599U CN203488268U CN 203488268 U CN203488268 U CN 203488268U CN 201320562599 U CN201320562599 U CN 201320562599U CN 203488268 U CN203488268 U CN 203488268U
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- cooling passage
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Abstract
The utility model discloses a double-ring-groove ring-inlaid diesel piston with an inner cooling oil path. A first ring groove and a second ring groove formed from top to bottom in a piston body are jointly provided, in an inlaid connecting mode, with a double-ring-groove combined wear-resisting steel ring with an E-shaped section. The annular inner cooling oil path which is welded with the side face of the top and the side face of the bottom of the E-shaped double-ring-groove combined wear-resisting steel ring and is provided with a C-shaped section is inserted in the piston body in an inlaid connecting mode. The C-shaped annular inner cooling oil path is coaxial with the piston body. The double-ring-groove ring-inlaid diesel piston is simple in structure, large in space of an inner cavity of the cooling oil path, good in cooling effect of the whole piston body, and suitable for diesel engines.
Description
Technical field
The utility model relates to a kind of improved diesel motor piston in technical field of engines.
Background technique
Along with improving constantly of the growing and diesel engine power of diesel engine, also more and more higher to the technical requirements of diesel engine piston.In known technology, what existing promotion power diesel engine piston adopted is the wear-resisting steel ring of insert on the first annular groove of piston main body top, and the cooling oil duct of piston main body is connected with the Wear Resisting Steel lap welding of the first annular groove insert.But limit by its structure, its structural design is unreasonable, because cooling oil duct is connected with the first annular groove Wear Resisting Steel lap welding, limited cooling oil duct intracavity space, cause flow of lubrication not enough, and only can reduce the temperature of the first annular groove, and affect the cooling effect of the second annular groove and whole piston body.
Model utility content
In order to overcome the deficiencies in the prior art, the utility model provides a kind of two inlaid ring of ring slot diesel engine pistons with interior oil cooling passage, it has simple and practical, and cooling oil duct intracavity space is large, and the first annular groove of piston main body and the second annular groove and whole piston body cooling effect are good.
The utility model solves the problems of the technologies described above adopted technological scheme:
A kind of two inlaid ring of ring slot diesel engine pistons with interior oil cooling passage, described piston main body closes altogether edge on the first downward annular groove of top and the second annular groove, and to be connected with cross section be the conjuncted wear-resisting steel ring of E shape dicyclo groove, and in piston main body edge be connected with the top of the conjuncted wear-resisting steel ring of E shape dicyclo groove and the annular that side is welding as one, cross section is C shape of bottom in oil cooling passage, oil cooling passage and piston main body coaxial line in the annular of C shape.
Above-mentioned a kind of two inlaid ring of ring slot diesel engine pistons with interior oil cooling passage, in the annular of described C shape, oil cooling passage is the interior oil cooling passage of annular of the C shape that top curved arc is little, bottom curved arc is large, its connect top curved arc and bottom curved arc the oblique oil duct edge of dorsal part circle body, with in the conjuncted wear-resisting steel ring of E shape dicyclo groove, connect side and become draft angle a, a is 18～22o
When the utility model is used, the same with existing diesel engine piston, according to designing requirement, be assembled in diesel engine.Improved diesel engine piston the first annular groove of piston main body and the second annular groove insert the dicyclo groove abrasion-proof inserted ring combining as a whole, and integrally welded with interior oil cooling passage, it has not only increased the surface area of inner chamber, and increased the intensity of the second annular groove, under equal-wattage, can reduce the second ring bank is the height of the spacing of first and second annular groove, optimized the working environment of the second ring simultaneously, reduced the temperature of the second ring, extended the working life of the second ring, the life cycle that has also greatly extended lubricant oil.
It is unreasonable that the utility model has solved existing diesel motor piston structural design effectively, the problem that cooling oil duct intracavity space is little.Through for several times test is on probation, show, it compared with prior art has simple and practically, and cooling oil duct intracavity space is large, and the advantages such as the first annular groove of piston main body and the second annular groove and whole piston body good cooling results, are applicable to diesel engine.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 is the utility model embodiment's structure diagram.
In accompanying drawing, each list of reference numerals is: 1 piston main body; Oil cooling passage in the annular of 2 C shapes; 3 first annular grooves; The conjuncted wear-resisting steel ring of 4 E shape dicyclo groove; 5 second annular grooves.
Embodiment
Embodiment as shown in Figure 1, piston main body 1 of the present utility model closes altogether edge on downward the first annular groove 3 in top and the second annular groove 5, and to be connected with cross section be the conjuncted wear-resisting steel ring 4 of E shape dicyclo groove, and in the interior edge of piston main body 1 is connected with the annular that the cross section being welding as one with the top of the conjuncted wear-resisting steel ring 4 of E shape dicyclo groove and the side of bottom is C shape oil cooling passage 2, in the annular of C shape, oil cooling passage 2 is upwards annulus body at the axis of piston main body 1.The endless loop that in the annular of the C shape of the present embodiment, oil cooling passage is nickel alloy, the conjuncted wear-resisting steel ring of E shape dicyclo groove is austenite abrasion-proof edge circle.
Referring to accompanying drawing 1 embodiment, in the annular of described C shape, oil cooling passage 2 be oil cooling passage in the annular of the C shape that top curved arc is little, bottom curved arc is large, and its oblique oil duct of dorsal part that connects top curved arc and bottom curved arc is inlayed circle body and in the conjuncted wear-resisting steel ring 4 of E shape dicyclo groove, connected side and become 20o draft angle a.
Claims (2)
1. two inlaid ring of ring slot diesel engine pistons of oil cooling passage in a band, it is provided with piston main body (1), it is characterized in that, described piston main body (1) closes altogether edge on downward the first annular groove in top (3) and the second annular groove (5), and to be connected with cross section be the E shape dicyclo conjuncted wear-resisting steel ring of groove (4), and in piston main body (1) edge be connected with the top of the E shape dicyclo conjuncted wear-resisting steel ring of groove (4) and the side of bottom is welding as one, cross section is C shape annular in oil cooling passage (2), oil cooling passage (2) and piston main body (1) coaxial line in the annular of C shape.
2. a kind of two inlaid ring of ring slot diesel engine pistons with interior oil cooling passage according to claim 1, it is characterized in that, in the annular of C shape, oil cooling passage (2) is the interior oil cooling passage of annular of the C shape that top, cross section curved arc is little, bottom curved arc is large, its connect top curved arc and bottom curved arc the oblique oil duct edge of dorsal part circle body, with in the E shape dicyclo conjuncted wear-resisting steel ring of groove (4), connect side and become draft angle a, a is 18～22o.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320562599.9U CN203488268U (en) | 2013-09-11 | 2013-09-11 | Double-ring-groove ring-inlaid diesel piston with inner cooling oil path |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320562599.9U CN203488268U (en) | 2013-09-11 | 2013-09-11 | Double-ring-groove ring-inlaid diesel piston with inner cooling oil path |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203488268U true CN203488268U (en) | 2014-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320562599.9U Expired - Fee Related CN203488268U (en) | 2013-09-11 | 2013-09-11 | Double-ring-groove ring-inlaid diesel piston with inner cooling oil path |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203488268U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109332891A (en) * | 2018-11-06 | 2019-02-15 | 佛山市宏石激光技术有限公司 | A kind of method for laser welding of interior cold insert |
| CN112610351A (en) * | 2020-12-21 | 2021-04-06 | 中国北方发动机研究所(天津) | Piston structure for strengthening cooling of annular groove |
-
2013
- 2013-09-11 CN CN201320562599.9U patent/CN203488268U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109332891A (en) * | 2018-11-06 | 2019-02-15 | 佛山市宏石激光技术有限公司 | A kind of method for laser welding of interior cold insert |
| CN112610351A (en) * | 2020-12-21 | 2021-04-06 | 中国北方发动机研究所(天津) | Piston structure for strengthening cooling of annular groove |
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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: 20140319 Termination date: 20160911 |