CN205064109U - Piston structure of single -point oil spout diesel engine - Google Patents
Piston structure of single -point oil spout diesel engine Download PDFInfo
- Publication number
- CN205064109U CN205064109U CN201520872100.3U CN201520872100U CN205064109U CN 205064109 U CN205064109 U CN 205064109U CN 201520872100 U CN201520872100 U CN 201520872100U CN 205064109 U CN205064109 U CN 205064109U
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- diesel engine
- groove
- oil
- piston
- diesel
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Abstract
The utility model discloses a 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 A center of recess is equipped with the pole setting perpendicularly, the top of pole setting is the plane, be equipped with the ring channel on the cell wall A of recess, the top place of pole setting highly is located the ring channel. According to the structure, the utility model discloses a piston structure of single -point oil spout diesel engine, through the effect of pole setting, 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 vertical rod, 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 vertical rod effect, the diesel oil be sprayed onto on the cell wall of groove rebounds in groove, participates in burning, further increases the firing effect of diesel oil, prevent from the cell wall of groove forms carbon distribution; The top of vertical rod is plane, piston only is used for a long time wearing and tearing occur and causes after position offsets, and oil nozzle still within the scope of the top of vertical rod, can continue the firing effect of guarantee diesel oil towards the projection of the bottom land A of groove; Connected by fillet between the bottom land B of circular groove and cell wall B, and the groove depth of circular groove is less than or equal to 3 millimeters, can directly again enter in groove along cell wall B time diesel oil is rebounded from bottom land B to cell wall B, produce power is avoided to lose, also avoid diesel oil in bottom land B and the accumulation of cell wall B joint, further increase the combustion efficiency of diesel oil.
Technical solution adopted in the utility model is:
Comprise piston only, the end concentric of described piston only is provided with groove, and the bottom land A central vertical of described groove is provided with vertical rod, and the top of described vertical rod is plane, the cell wall A of described groove is provided with circular groove, and place, the top height of described vertical rod is positioned at circular groove.
The further improvement project of the utility model is, the bottom land B of described circular groove is connected by fillet with the cell wall B of circular groove.
The utility model further improvement project is, the oil nozzle of diesel engine is towards being projected within the scope of the top of vertical rod of bottom land A of groove.
The utility model further improvement project is, the cell wall B of described circular groove keeps level.
The utility model further improvement project is, the groove depth of described circular groove is in the scope of 2.5 millimeters ~ 3 millimeters.
The beneficial effects of the utility model are:
The first, the piston structure of a kind of single-point oil spout diesel engine of the present utility model, by the effect of vertical rod, effectively can be evenly mixed in the oil sprayed from single-point oil nozzle in groove, thus diesel oil is fully mixed with air, improves the firing effect of diesel oil.
The second, the piston structure of a kind of single-point oil spout diesel engine of the present utility model, by the effect of circular groove, make due to vertical rod effect, the diesel oil be sprayed onto on the cell wall of groove rebounds 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 a kind of single-point oil spout diesel engine of the present utility model, the top of vertical rod is plane, piston only used for a long time wearing and tearing occur and cause after position offsets, oil nozzle still within the scope of the top of vertical rod, can continue the firing effect ensureing diesel oil towards the projection of the bottom land A of groove.
Four, the piston structure of a kind of single-point oil spout diesel engine of the present utility model, connected by fillet between the bottom land B of circular groove and cell wall B, and the groove depth of circular groove is less than or equal to 3 millimeters, can directly again enter in groove along cell wall B time diesel oil is rebounded from bottom land B to cell wall B, produce power is avoided to lose, also avoid diesel oil in bottom land B and the accumulation of cell wall B joint, further increase the combustion efficiency of diesel oil.
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, the end concentric of described piston only 1 is provided with groove 2, the bottom land A3 central vertical of described groove 2 is provided with vertical rod 4, the top of described vertical rod 4 is plane, the cell wall A5 of described groove 2 is provided with circular groove 6, and place, the top height of described vertical rod 4 is positioned at circular groove 6; The bottom land B of described circular groove 6 is connected by fillet 7 with the cell wall B of circular groove 6; The oil nozzle of diesel engine is towards within the scope of the top being projected in vertical rod 4 of the bottom land A3 of groove 2; The cell wall B of described circular groove 6 keeps level; The groove depth of described circular groove 6 is in the scope of 2.5 millimeters ~ 3 millimeters.
Claims (5)
1. the piston structure of a 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: the bottom land A(3 of described groove (2)) central vertical is provided with vertical rod (4), the top of described vertical rod (4) is plane, the cell wall A(5 of described groove (2)) be provided with circular groove (6), place, the top height of described vertical rod (4) is positioned at circular groove (6).
2. the piston structure of a kind of single-point oil spout diesel engine as claimed in claim 1, is characterized in that: the bottom land B of described circular groove (6) is connected by fillet (7) with the cell wall B of circular groove (6).
3. the piston structure of a kind of single-point oil spout diesel engine as claimed in claim 1, is characterized in that: the oil nozzle of diesel engine is towards the bottom land A(3 of groove (2)) the top being projected in vertical rod (4) within the scope of.
4. the piston structure of a kind of single-point oil spout diesel engine as claimed in claim 1, is characterized in that: the cell wall B of described circular groove (6) keeps level.
5. the piston structure of a kind of single-point oil spout diesel engine as claimed in claim 1, is characterized in that: the groove depth of described circular groove (6) is in the scope of 2.5 millimeters ~ 3 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520872100.3U CN205064109U (en) | 2015-11-05 | 2015-11-05 | Piston structure of single -point oil spout diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520872100.3U CN205064109U (en) | 2015-11-05 | 2015-11-05 | Piston structure of single -point oil spout diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205064109U true CN205064109U (en) | 2016-03-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520872100.3U Expired - Fee Related CN205064109U (en) | 2015-11-05 | 2015-11-05 | Piston structure of single -point oil spout diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205064109U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107401740A (en) * | 2017-09-07 | 2017-11-28 | 广西师范大学 | A kind of Novel alcohol lamp |
-
2015
- 2015-11-05 CN CN201520872100.3U patent/CN205064109U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107401740A (en) * | 2017-09-07 | 2017-11-28 | 广西师范大学 | A kind of Novel alcohol lamp |
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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: 20160302 Termination date: 20201105 |