CN102042907B - Method for testing steady flow of engine port and testing tool thereof - Google Patents
Method for testing steady flow of engine port and testing tool thereof Download PDFInfo
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- CN102042907B CN102042907B CN2010105018747A CN201010501874A CN102042907B CN 102042907 B CN102042907 B CN 102042907B CN 2010105018747 A CN2010105018747 A CN 2010105018747A CN 201010501874 A CN201010501874 A CN 201010501874A CN 102042907 B CN102042907 B CN 102042907B
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- 238000012360 testing method Methods 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title abstract description 5
- 238000010998 test method Methods 0.000 claims description 13
- 230000006641 stabilisation Effects 0.000 claims description 11
- 238000011105 stabilization Methods 0.000 claims description 11
- 230000003467 diminishing effect Effects 0.000 claims description 3
- 230000007704 transition Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000004088 simulation Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The invention provides a method for testing steady flow of an engine port, which is capable of really simulating actual engine operating condition, and a testing tool thereof so as to guide development of an engine. The testing method comprises the following steps of: mounting the testing tool on an air inlet flange face of the engine; and performing an air suction test, wherein the testing tool is provided with a through hole corresponding to the engine port, and an air inlet face of the through hole is in smooth transition. Due to the guide function of the air inlet face of the through hole of the testing tool, airflow entering the engine port does not flow backwards any more and is more similar to air at the engine port under the actual engine operating condition; therefore, the development of the engine can be more effectively guided. The airflow condition of the engine port is changed through the testing tool, so that an actual port test can more really simulate the actual engine operating condition and the tested data is more instructive; the used testing tool is simple in structure and low in cost; and the development cost can be effectively reduced.
Description
Technical field
The invention belongs to motor car engine experimental technique field, specially refer to the test method and the test frock thereof of engine air flue current stabilization.
Background technology
The air inlet situation of engine can have influence on the performance of engine; Therefore on Steady Flow Test Rig coefficient of flow, the swirl ratio of test engine air flue, roll stream than the important method that has just become engine evaluated cylinder cap air flue performance; And the actual operating mode difference of traditional test method and real engine is bigger, and test figure of testing and real engine state have difference, and concrete reason is following: like Fig. 1, shown in 2; Traditional cylinder cover steady flow test method is left intact to inlet flange face (7); When cylinder cap (5) is put into the steady flow testbed air-breathing mode that go up to adopt to air intake duct (2) when making an experiment, because of inlet mouth (4) has sharp-pointed seamed edge, air-flow is through behind the sharp-pointed seamed edge; Can produce refluence gas (3); Thereby the flow field in the air intake duct has produced influence, different with the air motion in the real engine intake process shown in Figure 3 (inlet (4) of actual engine air flue locates to be equipped with inlet manifold (10), therefore can not produce the refluence phenomenon); Therefore can have a strong impact on the confidence level of test, have influence on the exploitation of engine then.Be badly in need of the test method and the test frock of the engine air flue current stabilization of the actual engine operation condition of a kind of ability real simulation now.
Summary of the invention
The objective of the invention is to propose a kind of test method and test frock thereof of engine air flue current stabilization of can real simulation actual engine operation condition, with the exploitation of direct engine.
The test method of engine air flue current stabilization of the present invention comprises the steps: at first at the inlet flange face of engine a test frock to be installed; And then carry out sniff test; Said test frock has through hole in the position corresponding to the engine air road junction, the air inlet face rounding off of through hole.
The guide functions of the air inlet face through test frock through hole makes the air-flow that gets into engine air flue no longer include refluence, more is close to the engine air flue air inlet situation of real engine operation condition, therefore more effectively development of direct engine.
The invention also discloses the test frock in the test method of two kinds of above-mentioned engine air flue current stabilizations:
The wherein a kind of annular of structure for conforming to engine air flue degree of lip-rounding shape of testing frock, the air inlet face of the through hole of test frock is diminishing bell mouth shape.
For conveniently installing and fixing, the surface of contact of the inlet flange face of this test frock and engine has viscosity, directly is pasted at the trial on the inlet flange face of engine.
This test frock is preferably processed by plasticine, and plasticine not only has viscosity, is beneficial to the inlet flange face of engine to fix, but also has good plasticity, conveniently processes needed shape.
Another kind of test frock is an air inlet guide plate, and the middle part of said air inlet guide plate has the through hole that conforms to engine air flue degree of lip-rounding shape, and the air inlet face of through hole is the rounded corner structure.
For conveniently installing and fixing, the surface of contact of the inlet flange face of this test frock and engine has viscosity.
This test frock also is provided with and is used for and the fixing bolt hole of the inlet flange face of engine, so just can fix through the mode of bolt and the inlet flange face of engine, and is fixing more firm.
The present invention has changed the airflow state of engine air flue through the test frock; Make actual air flue test more can real simulation actual engine operation condition; Make test figure that directive significance more arranged, its used test tool structure is simple, cost is low, can effectively reduce cost of development.
Description of drawings
Fig. 1 is the structural representation of conventional engines cylinder cap;
Fig. 2 is the gas flow synoptic diagram under traditional steady flow test state;
Fig. 3 is the actual engine air direction of flow synoptic diagram that inlet manifold is housed;
Fig. 4 is the gas flow synoptic diagram under the steady flow test state of the present invention;
Fig. 5 is the mounting structure synoptic diagram of first kind of test frock of the present invention and engine;
Fig. 6 is the mounting structure synoptic diagram of second kind of test frock of the present invention and engine.
Embodiment
Specify the present invention below in conjunction with specific embodiment and accompanying drawing.
Embodiment 1:
As shown in Figure 4; The test method of the engine air flue current stabilization of present embodiment comprises the steps: at first at the inlet flange face of engine a test frock 1 to be installed; And then carry out sniff test; Said test frock 1 has through hole at inlet 4 places corresponding to engine inlets 2, the air inlet face rounding off of through hole.
The guide functions of the air inlet face through test frock through hole makes the air-flow that gets into engine air flue no longer include refluence, more is close to the engine air flue air inlet situation of real engine operation condition, therefore more effectively development of direct engine.
As shown in Figure 5, the structure of the test frock 1 in the test method of above-mentioned engine air flue current stabilization is and the annular rubber mud collar 6 of inlet 4 shape-consistent of engine inlets 2 that the air inlet face of annular rubber mud collar 6 is diminishing bell mouth shape.Annular rubber mud collar 6 utilizes the adhesive paste of self on the inlet flange face of cylinder cap 5.
Embodiment 2:
As shown in Figure 6, different with embodiment 1 is, the test frock that present embodiment adopts is an air inlet guide plate 8, and the middle part of said air inlet guide plate 8 has the through hole 81 that conforms to engine air flue degree of lip-rounding shape, and the air inlet face of through hole 81 is the rounded corner structure.
Claims (7)
1. the test method of an engine air flue current stabilization; It is characterized in that comprising the steps: at first a test frock being installed at the inlet flange face of engine; And then carry out sniff test; Said test frock has through hole in the position corresponding to the engine air road junction, the air inlet face rounding off of through hole.
2. the test frock in the test method of engine air flue current stabilization according to claim 1, the structure that it is characterized in that this test frock is the annular that conforms to engine air flue degree of lip-rounding shape, the air inlet face of the through hole of test frock is diminishing bell mouth shape.
3. test frock according to claim 2 is characterized in that the surface of contact of the inlet flange face of this test frock and engine has viscosity.
4. according to claim 2 or 3 described test frocks, it is characterized in that this test frock processed by plasticine.
5. the test frock in the test method of engine air flue current stabilization according to claim 1; It is characterized in that this test frock is an air inlet guide plate; The middle part of said air inlet guide plate has the through hole that conforms to engine air flue degree of lip-rounding shape, and the air inlet face of through hole is the rounded corner structure.
6. test frock according to claim 5 is characterized in that the surface of contact of the inlet flange face of this test frock and engine has viscosity.
7. test frock according to claim 5 is characterized in that this test frock also is provided with and is used for the bolt hole that the inlet flange face with engine fixes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105018747A CN102042907B (en) | 2010-09-30 | 2010-09-30 | Method for testing steady flow of engine port and testing tool thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105018747A CN102042907B (en) | 2010-09-30 | 2010-09-30 | Method for testing steady flow of engine port and testing tool thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102042907A CN102042907A (en) | 2011-05-04 |
| CN102042907B true CN102042907B (en) | 2012-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010105018747A Active CN102042907B (en) | 2010-09-30 | 2010-09-30 | Method for testing steady flow of engine port and testing tool thereof |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104359679B (en) * | 2014-12-04 | 2017-01-18 | 南京航空航天大学 | Method for measuring micropore flow coefficient under rotating condition |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201034817Y (en) * | 2006-10-20 | 2008-03-12 | 重庆长安汽车股份有限公司 | Car engine cylinder cap and air flue test-bed connecting assembling frock |
| KR20090071901A (en) * | 2007-12-28 | 2009-07-02 | 자동차부품연구원 | Steady state flow tester for a cylinder head with continuous valve profile control jig |
| CN101655413A (en) * | 2009-09-29 | 2010-02-24 | 天津大学 | Testing device for quickly detecting flow property parameters of air passage of internal combustion engine |
| CN101718628A (en) * | 2009-11-26 | 2010-06-02 | 浙江大学 | Air intake management and test system for internal combustion engine |
-
2010
- 2010-09-30 CN CN2010105018747A patent/CN102042907B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201034817Y (en) * | 2006-10-20 | 2008-03-12 | 重庆长安汽车股份有限公司 | Car engine cylinder cap and air flue test-bed connecting assembling frock |
| KR20090071901A (en) * | 2007-12-28 | 2009-07-02 | 자동차부품연구원 | Steady state flow tester for a cylinder head with continuous valve profile control jig |
| CN101655413A (en) * | 2009-09-29 | 2010-02-24 | 天津大学 | Testing device for quickly detecting flow property parameters of air passage of internal combustion engine |
| CN101718628A (en) * | 2009-11-26 | 2010-06-02 | 浙江大学 | Air intake management and test system for internal combustion engine |
Non-Patent Citations (1)
| Title |
|---|
| 李伟等.气道流量对发动机性能影响的评价方法.《现代零部件》.2007,(第04期), * |
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| CN102042907A (en) | 2011-05-04 |
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