CN201810411U - Cylinder cover of diesel engine - Google Patents
Cylinder cover of diesel engine Download PDFInfo
- Publication number
- CN201810411U CN201810411U CN201020574089XU CN201020574089U CN201810411U CN 201810411 U CN201810411 U CN 201810411U CN 201020574089X U CN201020574089X U CN 201020574089XU CN 201020574089 U CN201020574089 U CN 201020574089U CN 201810411 U CN201810411 U CN 201810411U
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- diesel engine
- cylinder cover
- millimeters
- air
- mounting hole
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Abstract
The utility model relates to a cylinder cover of a diesel engine, which comprises an air inlet passage, an air exhaust passage, a cooling jet, an electric heat plug installation hole, a cooling jet water inlet and a fuel injector mounting hole, wherein an installation angle of a fuel injector is adjusted through changing the size of the air inlet at the air inlet passage of the cylinder cover of the diesel engine, therefore abundant air in a combustor can be mixed with fuel oil more sufficiently, and the fuel oil burns more completely; the air entering the combustor can be heated quickly through arranging the electric heat plug installation hole at the air inlet side of the cylinder cover, thus being more beneficial for the burning and starting at a low temperature; and the cylinder cover deformation caused by over high temperature in a bridge of nose area is avoided through using cooling water to directly cool the bridge of nose area at the middle of an air iinlet/exhaust valve. After the cylinder cover of the diesel engine and the diesel engine cylinder are assembled, the fuel oil consumption rate and exhaust level can be reduced, the economic benefit of the diesel engine fuel is improved, and after the cylinder cover of the diesel engine is assembled to form a complete machine, the exhaustion accords with the national standard requirement.
Description
One, technical field
The utility model relates to a kind of cylinder cover for diesel engine, belongs to the cylinder cover for diesel engine technical field of structures.
Two, background technique
At present; at diesel engine---especially in the small-bore diesel engine technical field; the cylinder head of every cylinder two air valve structures is by widespread usage; though it is simple in structure that this cylinder head has; manufacturing process is easy; organize advantages such as air inlet is easy; but along with the worsening shortages of the world oil energy, the reinforcement day by day of environmental protection; to the Economy of diesel engine and the requirement strictness day by day of discharging; traditional every cylinder two air valve structures are owing to deficiency of air, fuel oil can not fully burn; influence the raising of diesel engine performance, can't satisfy the requirement of higher Economy and stricter Abgasgesetz.
Three, summary of the invention
The purpose of this utility model is to solve the deficiency that above-mentioned prior art exists, and a kind of novel diesel machine cylinder head is provided, and this cylinder head can improve the diesel engine fuel oil economic benefit, and toxic emission complies with the national standard requirements.
The utility model is achieved through the following technical solutions:
Principle of the present utility model and key problem in technology mainly contain four: the one, and the intake duct of change diesel engine, by changing the air inlet port dimensions of intake duct, improve the charging efficiency of diesel engine, make diesel engine in the power stroke process, have sufficient air to mix with fuel oil in spraying into cylinder; The 2nd, adjust the oil sprayer setting angle, make the distribution of oily line more even, thereby fuel oil can be mixed more fully with air, oil inflame is more complete, improves fuel economy and emission level; The 3rd, the glow plug mounting hole is arranged in cylinder head air inlet side, the glow plug heating part can directly reach the firing chamber, can heat the air that enters the firing chamber fast, is beneficial to burning and starting under the low temperature, and the emission level of diesel engine can reduce low temperature the time; The 4th, cooling system has increased by four special-purpose cooling water channels, can directly cool off the middle bridge of the nose district of inlet and exhaust valve, and having avoided herein, the too high cylinder cap that causes of temperature is out of shape.
A kind of cylinder cover for diesel engine:
1. comprise intake duct 3, air outlet flue 7, cooling jet 2 and glow plug mounting hole 4, cooling jet water intake 1, by the meticulous modification test on finite element analysis and the steady flow testbed of air passage, redesigned the inlet size of intake duct 3, the width L1 of air inlet road junction mold joint is 33～35 millimeters, height L2 is 44～46 millimeters, the bottom surface is 22.8～23.8 millimeters to the distance L 3 of mold joint, and fillet radius R is 3.8～4.2 millimeters, and mold joint is 2.9～3.1 ° to the angle of inclination B of both ends of the surface.
The optimum width L1 of above-mentioned air inlet road junction mold joint is 34 millimeters, and optimum height L2 is 45 millimeters, and the bottom surface is 23.3 millimeters to the distance L 3 of mold joint, and best fillet radius R is 4 millimeters, and mold joint is 3 ° to the optimum tilt angle B of both ends of the surface.
2. the angle [alpha] with mounting hole of oil sprayer 5 axis and vertical direction is designed to 12.5 °～13.5 °, the best angle value is 13 °, this structure had both been saved the space, make simultaneously the relative position relation of oil sprayer and firing chamber more accurate rationally again, help the even distribution of oily line, fuel oil can be mixed more fully with air.
3. glow plug mounting hole 4 is arranged in cylinder head air inlet side, the glow plug heating part can directly reach the firing chamber, can heat the air that enters the firing chamber fast.
4. cooling system has increased by four special-purpose cooling water channels, comprise cooling jet water intake 1 and cooling jet 2, the cooling water that comes from body enters by cooling jet water intake 1, by cooling jet 2, cooling water is directly injected to the bridge of the nose district 6 in the middle of the inlet and exhaust valve, and having avoided herein, the too high cylinder cap that causes of temperature is out of shape.
The beneficial effects of the utility model are: by to the design of intake duct optimized dimensions, can effectively improve the charging efficiency of diesel engine, the air that enters the firing chamber in the unit time is increased, oil inflame is abundant, improves the power per liter of motor; The axis of mounting hole of oil sprayer and the angle of vertical direction reduce, make the relative position relation of oil sprayer and firing chamber more accurate reasonable, help the even distribution of oily line, fuel oil can be mixed more fully with air, it is more abundant to burn, and has reduced fuel consumption rate and emission level; Prewarming control system is arranged on the cylinder head, and the glow plug heating part directly reaches inside, firing chamber, heated air fast, and motor will be more prone to starting at low temperatures, and the emission level of diesel engine can reduce low temperature the time; Four special-purpose cooling water channels that cooling system increases can fully cool off the bridge of the nose district in the middle of the inlet and exhaust valve, avoid that temperature is too high causes the cylinder cap distortion herein, and then fatigue damage takes place, and can satisfy the high and high usage requirement of pressure of explosion of high speed machine combustion temperature.State IV and above emission request are satisfied in toxic emission behind the utility model cylinder head assembling complete machine, and after measured, the utility model cylinder head induction swirl ratio is 1.8.
Four, description of drawings
Fig. 1: cylinder cover for diesel engine sectional drawing.
The A-A of Fig. 2: Fig. 1 is to sectional drawing.
The P of Fig. 3: Fig. 1 is to air inlet road junction zoomed-in view.
Among the figure: 1, cooling jet water intake, 2, cooling jet, 3, intake duct, 4, the glow plug mounting hole, 5, mounting hole of oil sprayer, 6, the bridge of the nose district in the middle of the inlet and exhaust valve, 7, air outlet flue.
Five, embodiment
Following with reference to accompanying drawing, provide embodiment of the present utility model, be used for formation of the present utility model is further specified.
Present embodiment is applied in 4 cylinders vertical diesel engine in upright arrangement, and cylinder diameter is 80 millimeters, and piston stroke is 90 millimeters, and rotating speed is 3600 rev/mins.
Fig. 1 is the sectional drawing of cylinder head, because spiral inlet duct is complex-shaped, not easy-to-use physical dimension is accurately described, its design mainly depends on the meticulous modification test on the steady flow testbed of air passage, draws the size at air inlet road junction by software analysis and experiment, and the width L1 of intake duct mold joint is 34 millimeters, height L2 is 45 millimeters, the bottom surface is 23.3 millimeters to the distance L 3 of mold joint, and fillet radius R is 4 millimeters, and mold joint is 3 ° to the angle of inclination B of both ends of the surface.The key of this technology is to guarantee that the swirl rate of air flue is 1.8, can obtain entering the gas flow of firing chamber according to air inlet road junction size.
Mounting hole of oil sprayer 5 axis and vertical direction angle [alpha] are designed to 13 °, the relative position relation of oil sprayer and firing chamber is more accurate rationally, the oil line distributes more even, cooperate with the intake swirl that produces, fuel oil can be mixed more fully with air inlet, it is more abundant to burn, and effectively reduces the discharging of HC and CO.
Glow plug mounting hole 4 design makes the glow plug heating part directly be deep into the firing chamber in cylinder head air inlet side, can heat the air that enters the firing chamber fast, is beneficial to burning and starting under the low temperature, and the emission level of diesel engine can reduce low temperature the time.
Cooling system has increased by four special-purpose cooling water channels, comprise cooling jet water intake 1 and cooling jet 2, cooling jet water intake 1 communicates with the body cooling water, cooling water enters from cooling jet water intake 1, be directly injected to the middle bridge of the nose district 6 of inlet and exhaust valve from cooling jet 2, avoid herein that temperature is too high to cause the cylinder cap distortion, and then fatigue damage takes place, can satisfy the high and high usage requirement of pressure of explosion of high speed machine combustion temperature.
During diesel engine work, air enters the firing chamber by intake duct, the air-flow that formation rotatablely moves, form uniform mixing gas mixture with the vaporific fuel oil that sprays into the firing chamber, especially when the low speed operating mode, the air that enters the firing chamber fully mixes with the vaporific diesel oil that sprays into the firing chamber and mixes, and sufficient combustion and complete, can satisfy the demand of diesel engine simultaneously, reduce the fuel consume of diesel engine under the low speed operating mode, and can effectively improve the smoke intensity under the low speed operating mode in high speed and low speed operating mode air inflow.
Claims (6)
1. cylinder cover for diesel engine, comprise intake duct (3), air outlet flue (7), cooling jet (2) and glow plug mounting hole (4), mounting hole of oil sprayer (5), the width L1 that it is characterized in that the import mold joint of intake duct (3) is 33～35 millimeters, height L2 is 44～46 millimeters, the bottom surface is 22.8～23.8 millimeters to the distance L 3 of mold joint, fillet radius R is 3.8～4.2 millimeters, and mold joint is 2.9～3.1 ° to the angle of inclination B of both ends of the surface.
2. according to the described a kind of cylinder cover for diesel engine of claim 1, the width L1 that it is characterized in that the import mold joint of described intake duct (3) is 34 millimeters, height L2 is 45 millimeters, the bottom surface is 23.3 millimeters to the distance L 3 of mold joint, fillet radius R is 4 millimeters, and mold joint is 3 ° to the angle of inclination B of both ends of the surface.
3. according to claim 1 or 2 described a kind of cylinder cover for diesel engine, it is characterized in that the value of described mounting hole of oil sprayer (5) axis and vertical direction angle [alpha] is designed to 12.5 °～13.5 °.
4. according to the described a kind of cylinder cover for diesel engine of claim 3, it is characterized in that the value of described mounting hole of oil sprayer (5) axis and vertical direction angle [alpha] is designed to 13 °
5. according to claim 1 or 2 described a kind of cylinder cover for diesel engine, it is characterized in that described glow plug mounting hole (4) design is in cylinder head air inlet side.
6. according to claim 1 or 2 described a kind of cylinder cover for diesel engine, it is characterized in that cooling system has increased by four special-purpose cooling water channels, comprise cooling jet water intake (1) and cooling jet (2), cooling water is entered by cooling jet water intake (1), is directly injected to the middle bridge of the nose district (6) of inlet and exhaust valve by cooling jet (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020574089XU CN201810411U (en) | 2010-10-12 | 2010-10-12 | Cylinder cover of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020574089XU CN201810411U (en) | 2010-10-12 | 2010-10-12 | Cylinder cover of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201810411U true CN201810411U (en) | 2011-04-27 |
Family
ID=43893353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020574089XU Expired - Fee Related CN201810411U (en) | 2010-10-12 | 2010-10-12 | Cylinder cover of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201810411U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016190A (en) * | 2013-01-05 | 2013-04-03 | 安徽江淮汽车股份有限公司 | Cylinder cover for turbo-charged diesel engine |
| WO2014000410A1 (en) * | 2012-06-27 | 2014-01-03 | 无锡开普动力有限公司 | Cooling structure of engine cylinder head |
| WO2018086190A1 (en) * | 2016-11-12 | 2018-05-17 | 顺德职业技术学院 | Internal combustion engine cylinder-based purification structure |
| CN109891076A (en) * | 2016-10-21 | 2019-06-14 | 本田技研工业株式会社 | Heat-insulated insertion part and the engine for having the heat-insulated insertion part |
-
2010
- 2010-10-12 CN CN201020574089XU patent/CN201810411U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014000410A1 (en) * | 2012-06-27 | 2014-01-03 | 无锡开普动力有限公司 | Cooling structure of engine cylinder head |
| CN103016190A (en) * | 2013-01-05 | 2013-04-03 | 安徽江淮汽车股份有限公司 | Cylinder cover for turbo-charged diesel engine |
| CN109891076A (en) * | 2016-10-21 | 2019-06-14 | 本田技研工业株式会社 | Heat-insulated insertion part and the engine for having the heat-insulated insertion part |
| WO2018086190A1 (en) * | 2016-11-12 | 2018-05-17 | 顺德职业技术学院 | Internal combustion engine cylinder-based purification 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 |
Granted publication date: 20110427 Termination date: 20171012 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |