CN202370689U - Oil return hole layout structure of piston skirt portion of diesel engine - Google Patents
Oil return hole layout structure of piston skirt portion of diesel engine Download PDFInfo
- Publication number
- CN202370689U CN202370689U CN2011205348643U CN201120534864U CN202370689U CN 202370689 U CN202370689 U CN 202370689U CN 2011205348643 U CN2011205348643 U CN 2011205348643U CN 201120534864 U CN201120534864 U CN 201120534864U CN 202370689 U CN202370689 U CN 202370689U
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- China
- Prior art keywords
- oil
- diesel engine
- piston skirt
- return hole
- ring
- 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 an oil return hole layout structure of a piston skirt portion of a diesel engine. An annular oil cavity is arranged on a piston skirt under the lower edge of a piston oil ring, and an oil return hole is added under an original oil return hole and on a processing oil ring and enables lubricating oil in an oil cavity region to rapidly flow back to an oil base casing, so that a high pressure region is prevented from being formed in the oil cavity region, the phenomenon that the lubricating oil flows upward and takes part in combustion is avoided, and the purpose of reducing oil consumption rate of the diesel engine is achieved. The oil return hole layout structure of the piston skirt portion of the diesel engine is suitable for a diesel engine with high oil consumption rate.
Description
Technical field
The utility model relates to the diesel engine piston technical field
Background technique
There is the higher problem of specific oil consumption in the 12V280 diesel engine of my company's independent research, in order to reduce the specific oil consumption of this diesel engine, adopts new piston skirt spill port placement scheme, to reach the purpose that reduces consumption of lubricating oil.
Diesel engine is when work, and the piston skirt is high-speed motion in cylinder liner.Be installed in the oil ring on the piston skirt (oil ring groove), when piston moves downward, the lubricant oil that is splashed on the cylinder liner internal wall scraped, to prevent lubricant oil " on scurry ", get into and participate in burning in the firing chamber, thereby cause the rising of diesel engine specific lubricating oil consumption.As shown in Figure 1: in existing design proposal, the tough lubricant oil that scrapes on the oil ring, through the notch that has on the oil ring oil ring groove of flowing through, the area that is distributed in the oil ring groove through spill port again flows back to oil sump.And the tough lubricant oil that scrapes under the oil ring drains into the spill port position through the oil pocket district, and the very little a part of area that is distributed in the oil pocket district through spill port again flows back to oil sump.
Existing piston skirt section spill port layout type, the tough lubricant oil that scrapes can be unobstructed on the oil ring flows back to oil sump.The tough lubricant oil that scrapes under the oil ring, because the oil pocket district of tough below is smaller under the oil ring, the flow area that spill port is distributed in the oil pocket district is also very little, can cause the oil sump that flows back to that this parts of lubricating oil can be very not unobstructed.And under the oil ring the tough lubricant oil that scrapes than the tough lubricant oil that scrapes on the oil ring Duo many, so just cause lubricating oil pressure in the oil pocket zone than higher, aggravated " on scurry " of lubricant oil, thereby caused the rising of diesel engine specific oil consumption.
The model utility content
The technical problem that the utility model solved is that the tough lubricating oil return that scrapes is obstructed under the oil ring, thereby reaches the purpose that reduces the diesel engine specific oil consumption.
The technological scheme that the utility model adopts is, diesel engine piston skirt section spill port layout structure, and the piston skirt of tough below is provided with the ring-type oil pocket under the oil piston ring, and the ring-type oil pocket is provided with at least four spill ports.
The beneficial effect of the utility model is, avoids in the oil pocket zone, forming the zone of high pressure, alleviates the phenomenon that lubricant oil " on scurry " is participated in burning, reaches the purpose that reduces the diesel engine specific oil consumption.
Description of drawings
Fig. 1 is the utility model structural representation
Be labeled as among the figure: the 1-spill port, 2-ring-type oil pocket, tough under the 3-oil ring, 4-oil pocket district, 5-cylinder liner internal wall.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
The improvement of the utility model is: at first; Ring-type oil pocket 2 of processing on the piston skirt under oil ring below tough 3; Increase the volume in the oil pocket district 4 of tough 3 belows under the oil ring, make under the oil ring tough 3 lubricant oil that scrape more unobstructed in this zone flow the position that flow to spill port 1 that can be unobstructed.Simultaneously, below the former spill port 1, processing increases four spill ports 1 newly on the oil ring, makes the lubricant oil in the oil pocket district 4 flow back to oil sump rapidly.
Can avoid like this in 4 territories, oil pocket district, forming the zone of high pressure, alleviate the phenomenon that lubricant oil " on scurry " is participated in burning, reach the purpose that reduces the diesel engine specific oil consumption.
Claims (1)
1. diesel engine piston skirt section spill port layout structure, it is characterized in that: the piston skirt of tough below is provided with the ring-type oil pocket under the oil piston ring, and the ring-type oil pocket is provided with at least four spill ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205348643U CN202370689U (en) | 2011-12-19 | 2011-12-19 | Oil return hole layout structure of piston skirt portion of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205348643U CN202370689U (en) | 2011-12-19 | 2011-12-19 | Oil return hole layout structure of piston skirt portion of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202370689U true CN202370689U (en) | 2012-08-08 |
Family
ID=46594395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205348643U Expired - Fee Related CN202370689U (en) | 2011-12-19 | 2011-12-19 | Oil return hole layout structure of piston skirt portion of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202370689U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106948964A (en) * | 2016-01-06 | 2017-07-14 | 光阳工业股份有限公司 | Engine pistons structure |
-
2011
- 2011-12-19 CN CN2011205348643U patent/CN202370689U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106948964A (en) * | 2016-01-06 | 2017-07-14 | 光阳工业股份有限公司 | Engine pistons structure |
| CN106948964B (en) * | 2016-01-06 | 2019-07-23 | 光阳工业股份有限公司 | Engine pistons structure |
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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: 20120808 Termination date: 20161219 |