CN201874697U - Gasket device of air inlet manifold for engine - Google Patents
Gasket device of air inlet manifold for engine Download PDFInfo
- Publication number
- CN201874697U CN201874697U CN2010206219452U CN201020621945U CN201874697U CN 201874697 U CN201874697 U CN 201874697U CN 2010206219452 U CN2010206219452 U CN 2010206219452U CN 201020621945 U CN201020621945 U CN 201020621945U CN 201874697 U CN201874697 U CN 201874697U
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- engine
- air inlet
- intake manifold
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- cylinder
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Abstract
The utility model discloses a gasket device of an air inlet manifold for an engine, which comprises a gasket body 1, a gasket inner chamber for communicating the air inlet manifold with a cylinder cover air inlet passage, and passages 3a-3c for communicating respective chambers 2a-2d. When the gasket device is used, under the partial load condition of the engine, particularly under the small load condition, the pumping loss can be effectively reduced, and the fuel economy of the engine can be improved; under the low speed condition, the return gas in a cylinder at the later period of the air inlet stroke can be sufficiently utilized to increase the air inflow of the engine; thus, the low-speed dynamic performance of the engine is improved; under the high speed and big load condition, as air inlet passages of respective cylinders are communicated with each other through connecting passages, the air inlet circulation section is increased; therefore, the dynamic property and the fuel economy of the engine can be further improved.
Description
Technical field
The utility model relates to the motor vehicle engine field, relates in particular to a kind of intake manifold pad device that is used for motor.
Background technique
As everyone knows, the intake manifold pad of motor is installed between intake manifold and the cylinder cap, is used to seal gas handling system.Pad has and the same number of pad inner chamber of intake duct, is used to be communicated with intake manifold intake duct and cylinder cap intake duct.Traditional intake manifold pad only for satisfying the effect that is sealed into air flue, also just selects for use different materials to realize best sealing effect according to the type of motor and the structural feature of cylinder cap inlet end face at the research of pad.
In the engine design process, with the natural inflow petrol engine is example, for mating high rotating speed, the service behaviour of motor under the high load working condition, IC Intake Valve Closes angle (intake valve closing, hereinafter to be referred as IVC) bigger, cause the IC Intake Valve Closes angle of low engine speed operating mode correspondence excessive, exist mixed gas in the cylinder to be back to phenomenon in the intake duct, this has caused the decline of air inlet charge to a certain extent, in addition owing to the degree of vacuum in the intake duct under the little load condition of motor is higher, can cause in the intake stroke pumping loss bigger, and the structural type of traditional intake manifold pad can't be avoided the problems referred to above.
A kind of intake manifold pad device that is used for motor that the utility model proposes can effectively utilize air inlet backflow effect to improve the efficient and the power performance of motor, and the while can be improved the fuel economy of motor, has great use value.
Summary of the invention
The purpose of this utility model is at existing in prior technology the problems referred to above, provide a kind of simple in structure, reliability is high and the intake manifold pad device of long service life.This model utility can effectively improve efficiency of engine, and simultaneously in sub load, particularly little load condition can significantly reduce the fuel consumption rate of motor down.
The purpose of this utility model can realize by following technical proposal: a kind of intake manifold pad device that is used for motor, comprise: shim body, and be used for pad inner chamber that intake manifold intake duct and cylinder cap intake duct are communicated with, and the passage that is communicated with each chamber of pad, can make motor obtain best power performance and economic performance.
Preferably, in the described intake manifold pad device, link to each other by the passage of certain diameter to each other, thereby make the intake process of every cylinder can both obtain the collaborative of adjacent cylinder intake duct owing to be communicated with the pad inner chamber of intake manifold intake duct and cylinder cap intake duct.
Preferably, in the described intake manifold pad device, the ratio of the sectional area of connecting passage and intake duct sectional area can access best engine fuel Economy and power performance between 5%～60%.
Preferably, in the described intake manifold pad device, connecting passage is realized in the mode of interior bone between the pad inner chamber.
Engine operation is under the low speed operating mode, can there be the air inlet backflow phenomenon in the intake stroke later stage, utilize intake manifold pad device described in the utility model, reflux gas can flow into by the connecting passage between the pad inner chamber in other cylinder intake duct in the cylinder, has increased air input of engine by air thereby utilize air inlet to reflux to greatest extent.
Engine operation is in sub load, under the particularly little load condition, intake manifold pad device described in the utility model can utilize the air inlet backflow phenomenon to reduce the degree of vacuum of adjacent cylinder intake duct, thereby has reduced pumping loss to a certain extent, has improved the efficient of motor.
Engine operation is under high rotating speed, high load working condition, utilize intake manifold pad device described in the utility model can increase the inlet flow area of every cylinder by the connecting passage between the pad inner chamber, thereby the increase charge flow rate improves engine power performance.
There is optimum diameter in connecting passage between the intake manifold pad inner chamber in addition, the ratio of the sectional area of connecting passage and intake duct sectional area is between 5%～60%, can obtain best Engine torque level by mating suitable caliber, thereby obtain best power performance.
In sum, a kind of intake manifold pad device that is used for motor can effectively reduce the engine section load, the fuel consumption rate under the particularly little load condition, and the while can be improved the efficient and the power performance of motor.
Description of drawings
Fig. 1 is a vertical profile structural representation of the present utility model.
Fig. 2 has shown that in engine speed be 2000r/min, when mean effective pressure is 0.2MPa in the cylinder, and under the different IVC, the Changing Pattern of the moment of torsion that the intake duct communicate-type cylinder cap device that utilizes the utility model to provide obtains and the contrast of traditional cylinder cover.
Fig. 3 has shown that in engine speed be 2000r/min, when mean effective pressure is 0.2MPa, and under the different IVC, the Changing Pattern of the effective specific fuel consumption that the intake duct communicate-type cylinder cap device that utilizes the utility model to provide obtains and the contrast of traditional cylinder cover.
Fig. 4 has shown by the different connecting tube diameter of coupling, the Changing Pattern of Engine torque under different rotating speeds.
Embodiment
Accompanying drawing 1 shown according to of the present utility model, be applied in the intake manifold pad device on a four-cylinder gasoline engine.This device comprises shim body 1, and is used for pad inner chamber that intake manifold intake duct and cylinder cap intake duct are communicated with, and the passage 3a-3c that each chamber 2a-2d is interconnected.Connecting passage is realized in the mode of interior bone between each pad inner chamber, can make motor can obtain best power performance and economic performance.
The whole system operation process is: when engine operation during at little load condition, because throttle opening is less, the degree of vacuum of intake duct is higher, in the intake process of a certain cylinder, the intake duct of adjacent cylinder can be by the connecting passage between the pad inner chamber to this cylinder transferring working medium, thereby improved the suction pressure of inlet casing to a great extent, reduced pumping loss, improved the efficient of motor.
When engine operation during in slow-speed of revolution operating mode, owing to exist mixed gas in the cylinder to be back to phenomenon in the intake duct, particularly can cause the IVC of low speed correspondence bigger by the engines distribution phase place of coupling at a high speed, the mixed gas capacity of reflux increases in the cylinder.The intake manifold pad device that utilizes the utility model to provide, reflux gas can in time be supplemented in the intake duct of other cylinder, has improved the air inlet charge under the low engine speed operating mode, has increased the low-speed dynamic performance of motor.
When engine operation during at high rotating speed, high load working condition, because the inlet flow sectional area becomes the principal element of limiting engine charge flow rate, intake manifold pad device described in the utility model can utilize the connecting tube between the pad inner chamber to increase the inlet flow area of every cylinder, thereby can effectively increase charge flow rate, improve engine power performance.
The intake manifold pad device that utilizes the utility model to provide, in engine speed is 2000r/min, when mean effective pressure is 0.2MPa in the cylinder, under the different IVC, can obtain higher Engine torque level, as shown in Figure 2, thus the utility model provide advance intake manifold pad device and can make motor obtain higher power performance.
The intake manifold pad device that utilizes the utility model to provide, the Changing Pattern of motor effective specific fuel consumption when can obtain mean effective pressure in the different cylinders by calculating, as shown in Figure 3, the intake manifold pad device that utilizes the utility model to provide as can be seen can effectively reduce the effective specific fuel consumption of motor, improves the fuel economy of motor.
In addition,,, can find that when the connecting tube diameter was b, the torque level of motor was the highest, engine power performance the best by choosing connecting passage diameter between the various inlet road as accompanying drawing 4.Therefore need mate best connecting tube diameter when adopting intake manifold pad device of the present utility model at different motors.
By calculating as can be known, the optimum diameter that is communicated with the connecting passage of pad inner chamber need satisfy the ratio of the sectional area of connecting passage and intake duct sectional area between 5%～60%, can obtain the torque level of best motor, engine power performance the best.
Advantage of the present utility model is: the intake manifold pad device that the utility model proposes has simple machining process, reliability is higher, can effectively improve motor in sub load, fuel economy and efficient during particularly little load condition, can improve simultaneously motor in the low speed operating mode and at a high speed, the power performance during high load working condition, have great use value.In addition, by mating the connecting tube diameter between the best pad inner chamber, motor can obtain best power performance and economic performance.
Although described the utility model in conjunction with above preferred embodiment; but will be appreciated that; the utility model is not limited to disclosed four-cylinder gasoline machine intake manifold pad device example, and the utility model can also cover various improvement and fall into the claimed spirit of the utility model and the equivalent arrangements of scope interior (various forms of natural inflows, four-stroke reciprocating gasoline engine).
Description of reference numerals:
1. shim body, 2. inlet cavity, 3. interface channel.
Claims (3)
1. intake manifold pad device that is used for motor comprises: shim body, be used for pad inner chamber that intake manifold intake duct and cylinder cap intake duct are communicated with, and the passage that each chamber is interconnected.
2. intake manifold pad device according to claim 1 is characterized in that: the ratio of the sectional area of this connecting passage and intake duct sectional area is between 5%～60%.
3. intake manifold pad device according to claim 1 is characterized in that: this connecting passage is realized in the mode of interior bone between the pad inner chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206219452U CN201874697U (en) | 2010-11-22 | 2010-11-22 | Gasket device of air inlet manifold for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206219452U CN201874697U (en) | 2010-11-22 | 2010-11-22 | Gasket device of air inlet manifold for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201874697U true CN201874697U (en) | 2011-06-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206219452U Expired - Fee Related CN201874697U (en) | 2010-11-22 | 2010-11-22 | Gasket device of air inlet manifold for engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201874697U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975120A (en) * | 2010-11-22 | 2011-02-16 | 北京理工大学 | Intake manifold gasket device for engine |
| CN105422857A (en) * | 2015-10-30 | 2016-03-23 | 宁波凌珂新材料科技有限公司 | Sealing ring used for pipe gastight connection |
-
2010
- 2010-11-22 CN CN2010206219452U patent/CN201874697U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975120A (en) * | 2010-11-22 | 2011-02-16 | 北京理工大学 | Intake manifold gasket device for engine |
| CN105422857A (en) * | 2015-10-30 | 2016-03-23 | 宁波凌珂新材料科技有限公司 | Sealing ring used for pipe gastight connection |
| CN105422857B (en) * | 2015-10-30 | 2017-12-01 | 宁波凌珂新材料科技有限公司 | The sealing ring being tightly connected for pipe fitting |
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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: 20110622 Termination date: 20181122 |