CN102538697A - Engine cylinder cover water chamber flow field visualization test method - Google Patents
Engine cylinder cover water chamber flow field visualization test method Download PDFInfo
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- CN102538697A CN102538697A CN2011101397537A CN201110139753A CN102538697A CN 102538697 A CN102538697 A CN 102538697A CN 2011101397537 A CN2011101397537 A CN 2011101397537A CN 201110139753 A CN201110139753 A CN 201110139753A CN 102538697 A CN102538697 A CN 102538697A
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- cylinder cover
- water
- flow field
- cylinder cap
- engine cylinder
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Abstract
The invention relates to an engine cylinder cover water chamber flow field visualization test method, which comprises the following steps of: preparing an engine cylinder cover test model; arranging an observation window in a flowing area on a cylinder cover; arranging a metal wire and a diode illuminating lamp which are insulated from the metallic cylinder cover at the upstream of a flow field area; running a water circulating system, discharging impurities in the water circulating system, running a water pump and adjusting flow to 0.5m/s to 1m/s; turning on a switch of a direct-current power supply with voltage being 10 to 100V and current being 0 to 1A, electrifying the metal wire to electrolyze water to generate hydrogen bubbles on the metal wire which is connected with the cathode by taking the metal wire as a cathode and the cylinder cover as an anode, and using the hydrogen bubbles as trace particles to flow and rotate with water; and illuminating the internal part of the cylinder cover by using the diode illuminating lamp, using a camera with a microspur function to capture the trace particles and recording the trajectory of the hydrogen bubbles generated by electrolyzed water in the flow field to obtain the motion trajectory of water molecules in the flow field of the cylinder cover. The engine cylinder cover water chamber flow field visualization test method has the advantages that the flowing situation of cooling water in the water chamber of the engine cylinder cover can be intuitively judged and the flowing dead zone in the water chamber of the cylinder cover is eliminated.
Description
Technical field
The invention belongs to a kind of flow field and show test method, relate in particular to a kind of engine cylinder cover water cavity flow field and show test method.
Background technology
Engine cylinder cover is the important composition part of engine, and it is to be used for the closed cylinder top, constitutes the firing chamber. supporting cam wheel axle, rocking shaft and inlet and exhaust valve make up entering and exhaust channel.After air was drawn onto cylinder interior, spark plug was lighted burning mixture, drove the piston acting, and the intact waste gas of final combustion is discharged from gas outlet through exhaust valve, exhaust duct.Cylinder cap is as complex parts, and its job operation is complicated, and particularly the structure for cylinder cap inside water cavity is difficult to observe and show especially, has brought great technical barrier for cylinder cap water cavity heat exchange research.
Summary of the invention
Technical matters to be solved by this invention provides a kind of engine cylinder cover water cavity flow field and shows test method, and this method can intuitively be passed judgment on the inner flow of cooling water situation of engine cylinder cover water cavity, manifests cylinder cap water cavity internal flow dead band.
Technical scheme of the present invention: a kind of engine cylinder cover water cavity flow field shows test method, and it may further comprise the steps:
(1) prepares engine cylinder cover test model, clear and definite intake-outlet;
(2) flow region on cylinder cap is arranged watch window;
(3) prepare constant voltage dc source, output voltage 10～100V, electric current 0～1A, preparing diameter is the tinsel of 0.02～0.1mm;
(4) tinsel and the diode illuminating lamp that insulate with the metal cylinder cap is set at the flow field regions upper reaches;
(5) connect the water cycle test platform, running water circulation system, impurity in the drainage water system; It in the assurance system chilled water of cleaning; The running water pump is adjusted to 0.5m/s～1m/s with flow, and cylinder cap inherence regions of turbulent flow on the direction of current or in cylinder cap can form eddy current and whirlpool;
(6) open voltage 10～100V, 0～1A DC power supply switch; With tinsel as negative electrode; Cylinder cap is as anode, and tinsel energising brine electrolysis connects the bubble hydrogen that produces on the tinsel of negative electrode; Produce the bigger oxygen bubbles of volume near connecing the cylinder cap of anode, bubble hydrogen as trace particle with water flows, rotation;
(7) with diode illuminating lamp to the cylinder cap internal irradiation; Use digital camera or have little video camera that gathers function to carry out trace particle and catch; By the bubble hydrogen track of brine electrolysis generation, the analysis and arrangement test findings can obtain the movement locus of hydrone in the cylinder cap flow field in the record flow field.
Described tinsel is any one in platinum filament, tungsten filament, copper wire or the stainless steel wire.
The present invention compared with prior art has following beneficial effect: a difficult problem that the invention solves the method research engine cylinder cover water cavity flow field demonstration of service test.Adopt this method; Measuring equipment is simple, be easy to realize; Can intuitively pass judgment on the inner flow of cooling water situation of engine cylinder cover water cavity, eliminate cylinder cap water cavity internal flow dead band, realize that a series of problems such as the internal flow of cylinder cap water cavity is visual provide technical method and test to support.
Embodiment
A kind of engine cylinder cover water cavity flow field shows test method, and it may further comprise the steps:
(1) prepares engine cylinder cover test model, clear and definite intake-outlet;
(2) flow region on cylinder cap is arranged watch window;
(3) prepare constant voltage dc source, output voltage 100V, electric current 1A, preparing diameter is the tinsel of 0.1mm;
(4) tinsel and the diode illuminating lamp that insulate with the metal cylinder cap is set at the flow field regions upper reaches;
(5) connect the water cycle test platform, running water circulation system, impurity in the drainage water system; It in the assurance system chilled water of cleaning; The running water pump is adjusted to 0.5m/s～1m/s with flow, and cylinder cap inherence regions of turbulent flow on the direction of current or in cylinder cap can form eddy current and whirlpool;
(6) open voltage 100V, 1A DC power supply switch, as negative electrode, cylinder cap is as anode with tinsel; Tinsel energising brine electrolysis; Connect the bubble hydrogen that produces on the tinsel of negative electrode, produce the bigger oxygen bubbles of volume near connecing the cylinder cap of anode, bubble hydrogen as trace particle with water flows, rotation;
(7) with diode illuminating lamp to the cylinder cap internal irradiation; Use digital camera or have little video camera that gathers function to carry out trace particle and catch; By the bubble hydrogen track of brine electrolysis generation, the analysis and arrangement test findings can obtain the movement locus of hydrone in the cylinder cap flow field in the record flow field.
Claims (2)
1. an engine cylinder cover water cavity flow field shows test method, it is characterized in that it may further comprise the steps:
(1) prepares engine cylinder cover test model, clear and definite intake-outlet;
(2) flow region on cylinder cap is arranged watch window;
(3) prepare constant voltage dc source, output voltage 10～100V, electric current 0～1A, preparing diameter is the tinsel of 0.02～0.1mm;
(4) tinsel and the diode illuminating lamp that insulate with the metal cylinder cap is set at the flow field regions upper reaches;
(5) connect the water cycle test platform, running water circulation system, impurity in the drainage water system; It in the assurance system chilled water of cleaning; The running water pump is adjusted to 0.5m/s～1m/s with flow, and cylinder cap inherence regions of turbulent flow on the direction of current or in cylinder cap can form eddy current and whirlpool;
(6) open voltage 10～100V, 0～1A DC power supply switch; With tinsel as negative electrode; Cylinder cap is as anode, and tinsel energising brine electrolysis connects the bubble hydrogen that produces on the tinsel of negative electrode; Produce the bigger oxygen bubbles of volume near connecing the cylinder cap of anode, bubble hydrogen as trace particle with water flows, rotation;
(7) with diode illuminating lamp to the cylinder cap internal irradiation; Use digital camera or have little video camera that gathers function to carry out trace particle and catch; By the bubble hydrogen track of brine electrolysis generation, the analysis and arrangement test findings can obtain the movement locus of hydrone in the cylinder cap flow field in the record flow field.
2. engine cylinder cover water cavity according to claim 1 flow field shows test method, it is characterized in that described tinsel is any one in platinum filament, tungsten filament, copper wire or the stainless steel wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101397537A CN102538697A (en) | 2011-05-25 | 2011-05-25 | Engine cylinder cover water chamber flow field visualization test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101397537A CN102538697A (en) | 2011-05-25 | 2011-05-25 | Engine cylinder cover water chamber flow field visualization test method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102538697A true CN102538697A (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2011101397537A Pending CN102538697A (en) | 2011-05-25 | 2011-05-25 | Engine cylinder cover water chamber flow field visualization test method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110686864A (en) * | 2019-11-01 | 2020-01-14 | 中国人民解放军海军工程大学 | Multirow movable cascade flow field experimental apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007033306A (en) * | 2005-07-28 | 2007-02-08 | Tokyo Electric Power Co Inc:The | System and method for measuring fluid flow |
| CN101078773A (en) * | 2007-06-18 | 2007-11-28 | 吉林大学 | Flow field visualization method and device |
| CN101852814A (en) * | 2010-04-29 | 2010-10-06 | 中国农业大学 | Whole-field testing method for internal flow of drip emitter maze flow channel |
-
2011
- 2011-05-25 CN CN2011101397537A patent/CN102538697A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007033306A (en) * | 2005-07-28 | 2007-02-08 | Tokyo Electric Power Co Inc:The | System and method for measuring fluid flow |
| CN101078773A (en) * | 2007-06-18 | 2007-11-28 | 吉林大学 | Flow field visualization method and device |
| CN101852814A (en) * | 2010-04-29 | 2010-10-06 | 中国农业大学 | Whole-field testing method for internal flow of drip emitter maze flow channel |
Non-Patent Citations (3)
| Title |
|---|
| HONGWEI MA，HAOKANG JIANG，YAXI QIU: "VISUALIZATIONS OF THE UNSTEADY FLOW FIELD NEAR THE ENDWALL OF A TURBINE CASCADE", 《PROCEEDINGS OF ASME TURBO EXPO 2002》, 6 June 2002 (2002-06-06) * |
| 吴有根，郑学龄，刘永俭: "氢气泡显示与PH值显示技术在教学中的应用", 《海军工程学院学报》, no. 1, 1 April 1984 (1984-04-01) * |
| 武纪原: "流体边界层阻力测试与流场显示", 《中国优秀硕士学位论文全文数据库基础科学辑》, no. 6, 15 December 2007 (2007-12-15) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110686864A (en) * | 2019-11-01 | 2020-01-14 | 中国人民解放军海军工程大学 | Multirow movable cascade flow field experimental apparatus |
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Application publication date: 20120704 |