CN205225483U - Novel piston structure of single -point oil spout diesel engine - Google Patents
Novel piston structure of single -point oil spout diesel engine Download PDFInfo
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- CN205225483U CN205225483U CN201520872153.5U CN201520872153U CN205225483U CN 205225483 U CN205225483 U CN 205225483U CN 201520872153 U CN201520872153 U CN 201520872153U CN 205225483 U CN205225483 U CN 205225483U
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- diesel engine
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- cone structure
- oil spout
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Abstract
The utility model discloses a novel piston structure of single -point oil spout diesel engine, including the piston only, the tip of piston only is equipped with the recess with the axle center, the tank bottom center of recess is equipped with the pole setting perpendicularly, the top of pole setting is the cone structure, the cross -section on cone structure surface is the cambered surface, the cambered surface is sunken to axis one side of cone structure. According to the structure, the utility model discloses a novel piston structure of single -point oil spout diesel engine, through the effect of cone structure, can be effectively with following single -point fuel sprayer spun oil homogeneous mixing in the recess to make diesel oil and air intensive mixing, improve the combustion efficiency of diesel oil.
Description
Technical field
The utility model relates to diesel engine piston field, is specifically related to a kind of piston structure of single-point oil spout diesel engine.
Background technique
The advantage of diesel engine is that moment of torsion is large, economic performance good.Working procedure and the petrol engine of diesel engine have many identical places, and each work cycle also experiences air inlet, compression, acting, exhaust four strokes.But the fuel due to use for diesel engine is diesel oil, its ratio of viscosities gasoline is large, and be not easy evaporation, and its spontaneous ignition temperature is lower than gasoline, therefore, the formation of inflammable mixture and firing mode are all different from petrol engine.Difference mainly contains, and the mixed gas in the cylinder of diesel engine is compression ignite, and non-ignition.During diesel engine work, what enter cylinder is air, and when the air compressing in cylinder to terminal, temperature can reach 500-700 DEG C, and pressure can reach 40-50 barometric pressure.During piston approaches top dead center, the oil nozzle of oil supply system with high pressure within the extremely short time to combustion chamber of air cylinder's injected fuel, diesel oil forms trickle elaioleucite, mixes with the air of high pressure-temperature, inflammable mixture self-burning, fierce expansion produces explosive force, promotion descent of piston does work, and now temperature can reach 1900-2000 DEG C, and pressure can reach 60-100 barometric pressure, the moment of torsion produced is very large, so diesel engine is widely used on large-sized diesel equipment.
The feature of conventional diesel: the thermal efficiency and better economy, diesel engine adopts compressed-air actuated way to improve air temperature, air temperature is made to exceed the self-ignition point of diesel oil, oneself ignition while at this moment spraying into the mixing of diesel oil, diesel spray and air again.Therefore, diesel engine is without the need to ignition system.Meanwhile, the oil supply system of diesel engine is also relatively simple, and therefore the reliability of diesel engine is better than petrolic.Owing to not being subject to the restriction of detonation and the needs of diesel oil spontaneous combustion, diesel engine compression ratio is very high.The thermal efficiency and Economy are all better than petrol engine, and simultaneously when equal-wattage, the moment of torsion of diesel engine is large, and rotating speed during peak output is low, is suitable for the use of cargo vehicle.
In order to make the diesel oil Thorough combustion in diesel engine, existing diesel engine is all by being provided with multiple oil nozzle on the market, to make the diesel oil in firing chamber fully mix with air, thus improves the firing effect of diesel oil.But this structure, can cause the manufacture cost of diesel engine to increase; In addition because multiple nozzle is all generally equally distributed around axle center, although the mixability of diesel oil and air can be improved, but the quantity due to oil nozzle is limited, such as four oil nozzles or six oil nozzles, be uniformly distributed in axle center surrounding, but between adjacent two oil nozzles, the position of position still has dead angle, the Determination of Diesel Oil at this position, dead angle is rarer relative to other position, i.e. whole firing chamber, diesel oil is not still mix full and uniform with air.
Summary of the invention
The purpose of this utility model is: overcome the deficiencies in the prior art, a kind of piston structure of single-point oil spout diesel engine is provided, by the effect of cone structure, can effectively the oil sprayed from single-point oil nozzle be evenly mixed in groove, thus diesel oil is fully mixed with air, improve the firing effect of diesel oil; By the effect of circular groove, make due to cone structure effect, the diesel oil be sprayed onto on the cell wall of groove rebounds to the top in groove, participates in burning, further increases the firing effect of diesel oil, prevent from the cell wall of groove forms carbon distribution; The cross section on cone structure surface is to axis side depression, and the diesel oil that oil nozzle is sprayed spreads to surrounding, prevents diesel oil from spraying to bottom portion of groove; The bottom land of circular groove is arcuate structure, and arcuate structure extends to the notch of circular groove, after ensureing that diesel oil is sprayed onto in circular groove, reflexes to the top in groove, makes diesel oil participate in burning completely.
Technical solution adopted in the utility model is:
The piston structure of single-point oil spout diesel engine, comprises piston only, and the end concentric of described piston only is provided with groove, and the bottom land central vertical of described groove is provided with vertical rod, and the top of described vertical rod is cone structure; The cross section on described cone structure surface is cambered surface, and described cambered surface caves in the axis side of cone structure.
The further improvement project of the utility model is, the base diameter of described cone structure is greater than the diameter of vertical rod.
The utility model further improvement project is, is greater than the half of groove groove depth bottom described cone structure with the height of bottom land, and place, the top height of described cone structure is lower than the place height of groove notch.
The utility model further improvement project is, the surface bottom portion of described cone structure cut tilted direction obliquely or level or obliquely.
The utility model further improvement project is, when the surface bottom portion of described cone structure tangent direction level or obliquely time, the cell wall of described groove is provided with circular groove, and the position of described circular groove is corresponding with the position that cone structure outwardly extends to the cell wall of groove.
The utility model further improvement project is, the cross section of the bottom land of described circular groove is arcuate structure, and the two ends of described arcuate structure extend to and flush with the upper and lower sides notch of circular groove respectively.
The utility model further improvement project is, the elongation line on described cone structure surface is positioned at arcuate structure.
The utility model further improvement project is, after the diesel oil of described cone structure surface diffusion contact arcuate structure, direction in the horizontal direction or is obliquely to groove internal reflection.
The utility model further improvement project is, the place height bottom described arcuate structure is higher than the bottom land of groove.
The beneficial effects of the utility model are:
The first, the piston structure of single-point oil spout diesel engine of the present utility model, by the effect of cone structure, effectively the oil sprayed from single-point oil nozzle can be evenly mixed in groove, thus diesel oil is fully mixed with air, improve the firing effect of diesel oil.
The second, the piston structure of single-point oil spout diesel engine of the present utility model, by the effect of circular groove, make due to cone structure effect, the diesel oil be sprayed onto on the cell wall of groove rebounds to the top in groove, participate in burning, further increase the firing effect of diesel oil, prevent from the cell wall of groove forms carbon distribution.
Three, the piston structure of single-point oil spout diesel engine of the present utility model, the cross section on cone structure surface is to axis side depression, and the diesel oil that oil nozzle is sprayed spreads to surrounding, prevents diesel oil from spraying to bottom portion of groove.
Four, the piston structure of single-point oil spout diesel engine of the present utility model, the bottom land of circular groove is arcuate structure, and, arcuate structure extends to the notch of circular groove, after ensureing that diesel oil is sprayed onto in circular groove, reflex to the top in groove, make diesel oil participate in burning completely.
accompanying drawing illustrates:
Fig. 1 is that the master of the utility model structure looks cross-sectional schematic.
embodiment:
As shown in Figure 1, the utility model comprises piston only 1, and the end concentric of described piston only 1 is provided with groove 2, and bottom land 3 central vertical of described groove 2 is provided with vertical rod 4, and the top of described vertical rod 4 is cone structure 5; The cross section on described cone structure 5 surface is cambered surface, and described cambered surface caves in the axis side of cone structure 5; The base diameter of described cone structure 5 is greater than the diameter of vertical rod 4; Be greater than the half of groove 2 groove depth bottom described cone structure 5 with the height of bottom land 3, and place, the top height of described cone structure 5 is lower than the place height of groove 2 notch; The surface bottom portion of described cone structure 5 cut tilted direction obliquely or level or obliquely; When the surface bottom portion of described cone structure 5 tangent direction level or obliquely time, the cell wall 6 of described groove 2 is provided with circular groove 7, and the position that position and the cone structure 5 of described circular groove 7 outwardly extend to the cell wall 6 of groove 2 is corresponding; The cross section of the bottom land of described circular groove 7 is arcuate structure 8, and the two ends of described arcuate structure 8 extend to and flush with the upper and lower sides notch of circular groove 7 respectively; The elongation line on described cone structure 5 surface is positioned at arcuate structure 8; After the diesel oil contact arcuate structure 8 of described cone structure 5 surface diffusion, direction in the horizontal direction or is obliquely to groove 2 internal reflection; Place height bottom described arcuate structure 8 is higher than the bottom land 3 of groove 2.
Claims (9)
1. the piston structure of single-point oil spout diesel engine, comprise piston only (1), the end concentric of described piston only (1) is provided with groove (2), it is characterized in that: bottom land (3) central vertical of described groove (2) is provided with vertical rod (4), the top of described vertical rod (4) is cone structure (5); The cross section on described cone structure (5) surface is cambered surface, and described cambered surface caves in the axis side of cone structure (5).
2. the piston structure of single-point oil spout diesel engine as claimed in claim 1, is characterized in that: the base diameter of described cone structure (5) is greater than the diameter of vertical rod (4).
3. the piston structure of single-point oil spout diesel engine as claimed in claim 1, it is characterized in that: described cone structure (5) bottom and the height of bottom land (3) are greater than the half of groove (2) groove depth, and place, the top height of described cone structure (5) is lower than the place height of groove (2) notch.
4., as the piston structure of the single-point oil spout diesel engine of claim 1 or 2 or 3 wherein as described in any one, it is characterized in that: the surface bottom portion of described cone structure (5) cut tilted direction obliquely or level or obliquely.
5. the piston structure of single-point oil spout diesel engine as claimed in claim 4, it is characterized in that: when the surface bottom portion of described cone structure (5) tangent direction level or obliquely time, the cell wall (6) of described groove (2) is provided with circular groove (7), and the position that position and the cone structure (5) of described circular groove (7) outwardly extend to the cell wall (6) of groove (2) is corresponding.
6. the piston structure of single-point oil spout diesel engine as claimed in claim 5, it is characterized in that: the cross section of the bottom land of described circular groove (7) is arcuate structure (8), and the two ends of described arcuate structure (8) extend to and flush with the upper and lower sides notch of circular groove (7) respectively.
7. the piston structure of single-point oil spout diesel engine as claimed in claim 6, is characterized in that: the elongation line on described cone structure (5) surface is positioned at arcuate structure (8).
8. the piston structure of single-point oil spout diesel engine as claimed in claim 7, is characterized in that: after diesel oil contact arcuate structure (8) of described cone structure (5) surface diffusion, direction in the horizontal direction or is obliquely to groove (2) internal reflection.
9. the piston structure of single-point oil spout diesel engine as claimed in claim 6, is characterized in that: the place height bottom described arcuate structure (8) is higher than the bottom land (3) of groove (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520872153.5U CN205225483U (en) | 2015-11-05 | 2015-11-05 | Novel piston structure of single -point oil spout diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520872153.5U CN205225483U (en) | 2015-11-05 | 2015-11-05 | Novel piston structure of single -point oil spout diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205225483U true CN205225483U (en) | 2016-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520872153.5U Expired - Fee Related CN205225483U (en) | 2015-11-05 | 2015-11-05 | Novel piston structure of single -point oil spout diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205225483U (en) |
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2015
- 2015-11-05 CN CN201520872153.5U patent/CN205225483U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20160511 Termination date: 20161105 |
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| CF01 | Termination of patent right due to non-payment of annual fee |