CN103439101B - Inlet manifold device for detecting performance and detection method - Google Patents
Inlet manifold device for detecting performance and detection method Download PDFInfo
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- CN103439101B CN103439101B CN201310383723.XA CN201310383723A CN103439101B CN 103439101 B CN103439101 B CN 103439101B CN 201310383723 A CN201310383723 A CN 201310383723A CN 103439101 B CN103439101 B CN 103439101B
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- inlet manifold
- pressure stabilizing
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- 238000001514 detection method Methods 0.000 title claims abstract description 10
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 43
- 238000012360 testing method Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 10
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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Abstract
The present invention relates to a kind of inlet manifold device for detecting performance and detection method, its device comprises that inside has the pressure stabilizing cavity of hollow cavity, be fixedly installed on the manifold connecting plate of pressure stabilizing cavity outside, which is provided with and be connected with inlet manifold, and the connecting hole being communicated with hollow cavity, on manifold connecting plate, be provided with the control valve that connecting hole is carried out to open and close controlling, and the escape pipe that is fixedly installed on pressure stabilizing cavity outside and is communicated with hollow cavity, escape pipe inside is provided with the vortex generating means that pressure stabilizing cavity effluent air is changed into eddy current, and intensity to eddy current and the flow swirl momentum meter and the flowmeter that detect respectively, with the free-ended gas exhausting device that is fixed on escape pipe. utilize this device can detect the impact of the each arm of inlet manifold on each cylinder air-flow, realize inlet manifold theory analysis is combined with actual tests, evaluate accurately inlet manifold performance is had rationally.
Description
Technical field
The present invention relates to a kind of checkout gear, relate in particular to a kind of inlet manifold device for detecting performance, the invention still further relates to a kind of inlet manifold method for testing performance.
Background technology
Air motion in gasoline engine cylinder has material impact to the combustion process of engine, especially the structure of air inlet end of a period moment cylinder flow field, by the turbulence intensity, the air velocity that directly determine near time of ignition spark plug, and the distribution of cylinder fuel, thereby the dynamic property, economy and the emission performance that affect engine, this just claims to the performance parameter of air intake duct and inlet manifold.
At present, the method detecting for inlet characteristic, is mainly to use steady flow testbed of air passage to carry out steady state test, and carries out two kinds of methods of CFD Mathematical Model Analysis. But for the detection of inlet manifold performance, present stage is just carried out CFD analysis theoretically, also do not have separately inlet manifold entity to be tested to the method detecting.
Inlet manifold performance is carried out to theoretic CFD analysis, and due to inlet manifold entity and whether digital-to-analogue is in full accord cannot detect, therefore this method exists inevitable drawback. for example, in the time inlet manifold being carried out to CFD analysis, be supposition inlet manifold each arm on each cylinder gases, mobile impact is consistent, but the inlet manifold of reality processing is installed to while testing on cylinder cover, each arm of inlet manifold is inconsistent for the impact of each cylinder, and there is no certain rule, and inlet manifold is arranged on and in cylinder head, is tested while detecting, operate very complicated, in the time that detected value fluctuation is larger, can not determine it is the problem of inlet manifold, or the shape problem of the air flue of cylinder head own, this reviews and causes very large puzzlement problem, also increase research and development and the detection difficult of inlet manifold.
Summary of the invention
For solving the deficiencies in the prior art, the invention provides a kind of inlet manifold device for detecting performance and detection method, by detecting the impact of the each arm of inlet manifold on each cylinder air-flow, realize inlet manifold theory analysis is combined with actual tests, evaluate accurately inlet manifold performance is had rationally.
For achieving the above object, inlet manifold device for detecting performance of the present invention comprises:
Pressure stabilizing cavity, its inside has hollow cavity;
Manifold connecting plate, is fixedly installed on pressure stabilizing cavity outside, which is provided with to be connected with the each arm of inlet manifold, and the connecting hole being communicated with hollow cavity, on manifold connecting plate, be provided with the control valve that connecting hole is carried out to open and close controlling;
Escape pipe, is fixedly installed on pressure stabilizing cavity outside and be communicated with hollow cavity, and its inside is provided with the vortex generating means that pressure stabilizing cavity effluent air is changed into eddy current, and intensity to eddy current and the flow swirl momentum meter and the flowmeter that detect respectively;
Gas exhausting device, is fixed on the free end of escape pipe.
As limitation of the invention, described gas exhausting device is vacuum blower.
As improvement of the present invention, on described pressure stabilizing cavity, be provided with the vacuum meter that vacuum in hollow cavity is measured, between gas exhausting device and pressure stabilizing cavity, be provided with hollow cavity in gas discharge and carry out the valve of open and close controlling.
As limitation of the invention, described manifold connecting plate and escape pipe are arranged on two opposite flanks of pressure stabilizing cavity.
Inlet manifold method for testing performance of the present invention comprises the steps:
Step 1, opens one of them inlet manifold arm by control valve, makes the air-flow in this inlet manifold arm enter into pressure stabilizing cavity;
Step 2, when the air-flow in pressure stabilizing cavity is discharged by escape pipe, changes air-flow into eddy current by vortex generating means;
Step 3, detects respectively the intensity and the flow that form eddy current in escape pipe by swirl momentum meter and flowmeter;
Step 4, repeating step one, to step 3, completes the detection to other inlet manifold arms.
As the improvement to aforesaid way, before step 1, also comprise:
Step a, makes each control valve all rotate to be closed condition, by gas exhausting device, pressure stabilizing cavity is vacuumized, and in the time that vacuum is 10KPa, detects the sealing of pressure stabilizing cavity.
Adopt technique scheme, can be directly the air inflow to each arm of inlet manifold and the ability that forms eddy current detect separately, thereby show that whether each arm of inlet manifold is consistent for the impact of each cylinder air-flow, it is combined with inlet manifold CFD theory analysis, can to inlet manifold performance have rationally accurately and evaluate, the drawback of having avoided single CFD theory analysis to bring, also the trouble that can save complicated operation while detection on cylinder cover, is beneficial to simultaneously testing result is analyzed to judgement.
Brief description of the drawings
Below in conjunction with the drawings and the specific embodiments, the present invention is done further to describe in detail:
Fig. 1 is the front view of the embodiment of the present invention one structure;
Fig. 2 is the top view of structure shown in Fig. 1;
Fig. 3 is the A-A face portion cutaway view of Fig. 2;
Fig. 4 is manifold connecting plate front view;
Fig. 5 is manifold connecting plate upward view;
Fig. 6 is the top view of pressure stabilizing cavity;
Fig. 7 is the A-A face cutaway view of Fig. 6;
Fig. 8 is vortex generator structural representation;
In figure: 1, pressure stabilizing cavity; 2, air inlet; 3, exhaust outlet; 4, pressure stabilizing cavity installing hole; 5, manifold connecting plate; 51, connecting hole; 52, connecting plate installing hole; 53, seal groove; 6, control valve; 7, escape pipe; 8, vortex generator; 81, central shaft; 82, retainer plate; 83, blade; 9, vacuum blower; 10, valve; 11, swirl momentum meter; 12, flowmeter; 13, vacuum meter; 14, hollow cavity.
Detailed description of the invention
Embodiment mono-
The present embodiment relates to a kind of inlet manifold device for detecting performance, by shown in Fig. 1 to Fig. 3, it comprises pressure stabilizing cavity 1, be arranged on the manifold connecting plate 5 of pressure stabilizing cavity 1 upper surface, and be arranged on the escape pipe 7 of pressure stabilizing cavity 1 lower surface, in escape pipe 7, be provided with a vortex generator 8 with pressure stabilizing cavity 1 junction, be connected with vacuum blower 9 at escape pipe 7 ends, on escape pipe 7, be provided with near vacuum blower 9 places the valve 10 opening and closing for controlling escape pipe 7, on escape pipe 7, be provided with swirl momentum meter 11 and flowmeter 12 for the interior gas of escape pipe 7 is detected, on pressure stabilizing cavity 1, be also provided with the vacuum meter 13 that its internal vacuum is detected.
The structure of manifold connecting plate 5 as shown in Figure 4 and Figure 5, it is a cuboid, offer multiple connecting holes 51 corresponding with the each arm outlet of inlet manifold (not shown) at manifold connecting plate 5 middle parts, around connecting hole 51, be provided with a circle seal groove 53, it can increase the sealing after being connected with pressure stabilizing cavity 1, around seal groove 53, be evenly provided with connecting plate installing hole 52, in each connecting hole 51, be also provided with the control valve 6 opening and closing for control connection hole 51, it is installed on the side surface of manifold connecting plate 5, the butterfly valve of control valve 6 for matching with connecting hole 51 internal diameters in the present embodiment, certainly, it can be also the other forms of valve with good seal performance.
The structure of pressure stabilizing cavity 1 as shown in Figure 6 and Figure 7, its inside is hollow cavity 14, the inner cylinder pressure that can simulate escape pipe 7 is stablized, while guaranteeing the each arm of inlet manifold to test, pressure differential is stable, offer air inlet 2 in pressure stabilizing cavity 1 upper surface middle part, the size of the undersized of air inlet 2 seal groove 53 on manifold connecting plate 5, around air inlet 2, be evenly provided with the pressure stabilizing cavity installing hole 4 corresponding with connecting plate installing hole 52 positions on manifold connecting plate 5, its for the connection of manifold connecting plate 5, on the lower surface of pressure stabilizing cavity 1, offer exhaust outlet 3, it is connected with escape pipe 7.
The structure of vortex generator 8 as shown in Figure 8, it comprises central shaft 81, equally distributed blade 83 centered by central shaft 81, with the retainer plate 82 that is centered around blade 83 and is around connected with it, in the present embodiment, vortex generator 8 is for being arranged in escape pipe 7, retainer plate 82 outer circumference surfaces and escape pipe 7 inner surfaces are sealed and matched, the number of blade 83 is 7, 9, between 11 threes one, the inclination angle of blade 83 remains between 0 ° to 10 °, suitable to ensure the pressure differential of blade 83 upper and lower surfaces, avoid due to the excessive generation backflow phenomenon in inclination angle, the curvature minimum of a value of blade 83 is 0, maximum is between 0.02～0.03, resistance at this scope intra vane 83 is moderate, under certain pressure reduction, both can form the eddy current of being convenient to measurement that intensity is suitable, can not make gas flow too small because of the resistance that deep camber produces excessively again, the height of blade 83 is can ensure suitable air supplying distance. certainly except vortex generator 8 structures shown in the present embodiment, it can be also other forms of vortex generating means.
Embodiment bis-
The present embodiment relates to a kind of inlet manifold method for testing performance, and the method comprises the steps:
Step a, makes each control valve 6 all rotate to be closed condition, opens vacuum blower 9 pressure stabilizing cavity 1 is vacuumized, and in the time that vacuum meter 13 shows that vacuum reaches 10KPa, valve-off 10, leaves standstill a period of time to detect the sealing of pressure stabilizing cavity 1;
Step 1, opens one of them control valve 6, makes the air-flow in the corresponding inlet manifold arm of this control valve 6 enter into pressure stabilizing cavity 1;
Step 2, when the air-flow in pressure stabilizing cavity 1 is discharged by escape pipe 7, changes air-flow into eddy current by vortex generator 8;
Step 3, detects respectively the slight and flow of the interior formation eddy current of escape pipe 7 by swirl momentum meter 11 and flowmeter 12;
Step 4, repeating step one, to step 3, completes the detection to other inlet manifold.
The swirl gas strength of vortex and the gas flow that utilize swirl momentum meter 11 and flowmeter 12 to detect, just can learn the impact of each inlet manifold arm countercylinder air-flow, in conjunction with the CFD theory analysis to inlet manifold, just can inlet manifold performance be had rationally and be evaluated accurately again.
Claims (6)
1. an inlet manifold device for detecting performance, is characterized in that comprising:
Pressure stabilizing cavity, its inside has hollow cavity;
Manifold connecting plate, is fixedly installed on pressure stabilizing cavity outside, which is provided with to be connected with the each arm of inlet manifold, and the connecting hole being communicated with hollow cavity, on manifold connecting plate, be provided with the control valve that connecting hole is carried out to open and close controlling;
Escape pipe, is fixedly installed on pressure stabilizing cavity outside and be communicated with hollow cavity, and its inside is provided with the vortex generating means that pressure stabilizing cavity effluent air is changed into eddy current, and intensity to eddy current and the flow swirl momentum meter and the flowmeter that detect respectively;
Gas exhausting device, is fixed on the free end of escape pipe.
2. inlet manifold device for detecting performance according to claim 1, is characterized in that: described gas exhausting device is vacuum blower.
3. inlet manifold device for detecting performance according to claim 1, it is characterized in that: on described pressure stabilizing cavity, be provided with the vacuum meter that vacuum in hollow cavity is measured, between gas exhausting device and pressure stabilizing cavity, be provided with hollow cavity in gas discharge and carry out the valve of open and close controlling.
4. according to the inlet manifold device for detecting performance described in any one in claims 1 to 3, it is characterized in that: described manifold connecting plate and escape pipe are arranged on two opposite flanks of pressure stabilizing cavity.
5. an inlet manifold method for testing performance, is characterized in that the method, based under inlet manifold device for detecting performance as claimed in claim 1, comprises the steps:
Step 1, opens one of them inlet manifold arm by control valve, makes the air-flow in this inlet manifold arm enter into pressure stabilizing cavity;
Step 2, when the air-flow in pressure stabilizing cavity is discharged by escape pipe, changes air-flow into eddy current by vortex generating means;
Step 3, detects respectively the intensity and the flow that form eddy current in escape pipe by swirl momentum meter and flowmeter;
Step 4, repeating step one, to step 3, completes the detection to other inlet manifold arms.
6. inlet manifold method for testing performance according to claim 5, is characterized in that also comprising before step 1:
Step a, makes each control valve all rotate to be closed condition, by gas exhausting device, pressure stabilizing cavity is vacuumized, and in the time that vacuum is 10KPa, detects the sealing of pressure stabilizing cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310383723.XA CN103439101B (en) | 2013-08-29 | 2013-08-29 | Inlet manifold device for detecting performance and detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310383723.XA CN103439101B (en) | 2013-08-29 | 2013-08-29 | Inlet manifold device for detecting performance and detection method |
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| Publication Number | Publication Date |
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| CN103439101A CN103439101A (en) | 2013-12-11 |
| CN103439101B true CN103439101B (en) | 2016-05-04 |
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| CN201310383723.XA Expired - Fee Related CN103439101B (en) | 2013-08-29 | 2013-08-29 | Inlet manifold device for detecting performance and detection method |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104596747B (en) * | 2014-12-26 | 2017-06-30 | 舟山市恒威船舶配件有限公司 | A kind of vacuum device for testing flow of air pipe head |
| CN105606365A (en) * | 2015-12-16 | 2016-05-25 | 中国船舶重工集团公司第七一一研究所 | Engine airway testing method |
| CN106644314A (en) * | 2016-12-29 | 2017-05-10 | 江西鑫田车业有限公司 | Air inlet manifold air-tightness detection device |
| CN113898507B (en) * | 2021-08-24 | 2022-09-13 | 义乌吉利动力总成有限公司 | Flow coefficient testing method, optimization method and testing rack of hybrid engine |
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| CN202182708U (en) * | 2011-07-31 | 2012-04-04 | 长城汽车股份有限公司 | Engine intake manifold detector |
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| JP4735302B2 (en) * | 2006-02-08 | 2011-07-27 | 株式会社デンソー | Intake vortex generator |
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| CN200962065Y (en) * | 2006-09-06 | 2007-10-17 | 浙江博德汽车电子股份有限公司 | Detection device of inlet branch pipe pressure sensor |
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| CN101699047A (en) * | 2009-11-10 | 2010-04-28 | 天津惠德汽车进气***有限公司 | Variable air volume type air intake branch pipe |
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