CN100510682C - Test device for petrol engine duct test tumble flow - Google Patents
Test device for petrol engine duct test tumble flow Download PDFInfo
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- CN100510682C CN100510682C CNB2007100672333A CN200710067233A CN100510682C CN 100510682 C CN100510682 C CN 100510682C CN B2007100672333 A CNB2007100672333 A CN B2007100672333A CN 200710067233 A CN200710067233 A CN 200710067233A CN 100510682 C CN100510682 C CN 100510682C
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Abstract
The present invention relates to a testing machine of the gasoline engine path testing flow, and said machine includes a simulated cylinder barrel (1), a vane (2) for measuring the speed and a rotating shaft (3) which is positioned in the center of the simulated cylinder barrel (1) through a rolling bearing (4); said vane (2) for measuring the speed is orbicular; a groove hole (31) that matches with the vane (2) for measuring the speed is opened in the shaft direction in the center of the rotating shaft (3); the vane (2) for measuring the speed is inserted in the groove hole (31) and the center of the vane (2) for measuring the speed is fixed in the groove hole (31). The vane (2) for measuring the speed can be fixed on the rotating shaft without an axle hub. Thus, the testing machine has a simple and reasonable structure and a light weight. The vanes (2) having different thickness can be produced according the demand and the favourable sensing of the air inlet rolling flow from the air inlet channel by the vane (2) for measuring the speed can be assured effectively, thus, the rotating speed of the vane (2) is corresponding to the air inlet rolling flow.
Description
Technical field
The present invention relates to belong to the technical field of petrol engine duct test tumble flow test, relate in particular to a kind of test device for petrol engine duct test tumble flow.
Background technology
Modern gasoline machine, especially direct spray petrol engine in cylinder roll stream to air inlet specific requirement, and rolling intensity of flow has fundamental influence to the homogenieity of combination gas or the layering of combination gas, so the insider pays close attention.At present, domestic gasoline engine industry does not still have desirable method of testing when air inlet is rolled fluidity and can be made simulation test to gasoline engine.
Existing test device for petrol engine duct test tumble flow has following several:
1., with the flow field in the Laser Doppler Velocimeter survey gasoline engine cylinder, by data processing acquisition in-cylinder tumble flow data.The measuring accuracy height of this method of testing, but technology is very complicated, test period is quite grown (general test one sets of data needs the some months time), and the height that the price of Laser Doppler Velocimeter is suitable, not that general enterprise can bear, this measuring technology is mainly used in fundamental research, application difficult in product development.
2., with the flow field in the hot-wire anemometer survey gasoline engine cylinder, by data processing acquisition in-cylinder tumble flow data.The measuring accuracy of this method of testing is also higher, but technology is very complicated, and test period is long, and it is mainly used in fundamental research, application difficult in product development.
3., roll the current test device, this device processing and manufacturing difficulty is quite big, at present domesticly still can not process, and it generally is buying Germany that the honeycomb disc type is rolled the current test device with the honeycomb disc type.
4., horizontal cyclone method test, on the steady flow air flue test stand, divide the stream that rolls that forms in the vertical portion of test cylinder barrel by the air intake duct air valve place effluent air of air flue model.This test method supposition, gas divides the stream that rolls that forms in the vertical portion of test cylinder barrel, can keep along with gas flows downward always, and the impeller that promotes to test the speed in the horizontal cylinder below, with the velocity of rotation of impeller simulation gas in the jar roll the flow velocity degree, at the lift range value of several valves, measure the immeasurable fluxion of just having rolled of air flue, calculate the immeasurable stream ratio that just rolled of whole admission stroke then by data processing, utilize this immeasurablely just to roll the intensity of flow that rolls that stream is recently estimated whole admission stroke.This method of testing is rolled the stream information loss greatly under some occasion.
5., it is that the Chinese utility model patent " air intake duct Direct Action Type roll wave intensity tester " of ZL03251700.9 (notification number is CN2624204Y) has disclosed a kind of like this current test device that rolls that one patent No. is arranged, it is by the impeller assembly that tests the speed, the simulation test cylinder barrel is formed, the simulation test cylinder barrel is made of three parts, promptly go up cylinder barrel, middle cylinder barrel and following cylinder barrel, the impeller assembly that tests the speed is by the blade that tests the speed, vane arm, propeller boss, axle is formed, it is characterized by: the impeller assembly that tests the speed is also by the left bearing pedestal, the right bearing pedestal, the left bearing flap, the right bearing flap, left side outside fix cover, right outside fix cover, locating sleeve in the left side, locating sleeve in right, dynamic bearing rolls left, right rolling bearing is formed, with the left bearing pedestal, the right bearing pedestal is installed on the middle cylinder barrel, propeller boss is installed on the axle, in the left end of axle puts a left side behind the locating sleeve, the dynamic bearing interference of will rolling left is contained on the left end spindle nose, then with the right-hand member of axle from the right bearing pedestal lean out install right in locating sleeve, right rolling bearing and axle interference fit, again mounted axle is installed in the left bearing pedestal, on the right bearing pedestal, with left outside fix cover, right outside fix cover is installed, press the left bearing flap then, the right bearing flap, vane arm is installed in propeller boss, and blade is installed on the vane arm.The blade that tests the speed that this patent relates to has two, the both sides up and down that are distributed in axle of symmetry, blade pass is crossed propeller boss and is installed on the axle, so the quality of its whole blade assembly that tests the speed is bigger, totator inertia is bigger, make the whole blade assembly axle rotation relatively of testing the speed, then need bigger rotating torque, promptly will bigger air inlet roll stream and could drive the blade assembly axle rotation relatively of testing the speed, the circulation speed of measuring of rolling has big gap, i.e. an analog distortion with actual.Its error can be bigger when being applied to float petrol machine; In addition, quiet, the transient equilibrium of the blade that tests the speed are difficult to adjust, and the assembling of the blade that tests the speed is also very inconvenient.Also constitute by last cylinder barrel, middle cylinder barrel and following cylinder barrel three parts, so the structure of cylinder barrel is complicated owing to its simulation test cylinder barrel.
In sum, existing test device for petrol engine duct test tumble flow also can improve further.
Summary of the invention
Technical matters to be solved by this invention be provide a kind of at above-mentioned prior art present situation and be quick on the draw, rate accuracy is higher, analog distortion is little test device for petrol engine duct test tumble flow, this device also has advantage simple and reasonable, easy to assembly.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of test device for petrol engine duct test tumble flow, include simulation cylinder barrel, the blade that tests the speed, rotating shaft, described rotating shaft is installed in the middle part of simulating in the cylinder barrel by rolling bearing, it is characterized in that describedly testing the speed blade in the form of a ring, at the middle part of rotating shaft along the slotted eye that it has on axially and the blade that tests the speed matches, the blade that tests the speed interts in slotted eye, and the middle part of the blade that will test the speed is fixed in the slotted eye.
In order to guarantee to roll the precision of current test, above-mentioned rotating shaft and the axis normal of simulating cylinder barrel.Can well respond to the air inlet that flows into from inlet channel with the blade that guarantees to test the speed and roll stream, make the blade that tests the speed rotating speed can and air inlet to roll the flow velocity of stream corresponding.
For the precision that further guarantees to roll current test, the above-mentioned blade that tests the speed is the ring plate shape, and its thickness only has 0.5～0.6mm, and its diameter is 0.92 times of the simulation cylinder barrel.
For the ease of assembling, above-mentioned simulation cylinder barrel is by last cylinder barrel and following cylinder barrel be combined into, and described rolling bearing is installed between cylinder barrel and the following cylinder barrel.During assembling, will put into down the blade that tests the speed that assembles, rotating shaft, rolling bearing component in the semicircle orifice of cylinder barrel earlier, the semicircle orifice aligning rolling bearing that will go up cylinder barrel then attaches together together and gets final product.
The above-mentioned blade that tests the speed is bonded and fixed in the slotted eye of rotating shaft.This fixed form is simple and practical.
Compared with prior art, the invention has the advantages that: owing to test the speed blade integral in the form of a ring, and the middle part of the blade that tests the speed is fixed in the axial slots of rotating shaft, it need not propeller boss and just can be fixed in the rotating shaft, so it is simple and reasonable, easy to assembly, and its whole weight is less, can make the blade that tests the speed of different thickness degree as required, the gasoline engine of so little discharge capacity is transported to the air inlet of simulation in the cylinder barrel and rolls stream and also can drive the blade that tests the speed well and rotate with rotating shaft, the blade that effectively guarantees to test the speed can well be responded to the air inlet that flows into from inlet channel and roll stream, make the blade that tests the speed rotating speed can and air inlet to roll the flow velocity of stream corresponding, so roll the precision height of current test.
Description of drawings
Fig. 1 is the perspective view of the embodiment of the invention;
Fig. 2 is the cut-open view of simulation cylinder barrel in the embodiment of the invention;
Fig. 3 is contained in synoptic diagram in the rotating shaft for the vane group that tests the speed in the embodiment of the invention;
Fig. 4 is the perspective view of embodiment of the invention shaft.
Embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
A kind of test device for petrol engine duct test tumble flow shown in Fig. 1～4, include simulation cylinder barrel 1, blade 2 tests the speed, rotating shaft 3, simulation cylinder barrel 1 usefulness transparent organic glass is made, it is transparent promptly simulating cylinder barrel 1, described simulation cylinder barrel 1 is by last cylinder barrel 11 and following cylinder barrel 12 be combined intos, be provided with the installation seam in the lower end of last cylinder barrel 11 and the upper end of following cylinder barrel 12, last cylinder barrel 11 and following cylinder barrel 12 are aimed at combination by seam is installed, and the junction seals with jointing tape, this combination is simple and practical, certainly the mode that goes up cylinder barrel 11 and following cylinder barrel 12 combinations can adopt existing variety of way, as combinations such as buckle or screw threads.
Lower end at simulation cylinder barrel 1 communicates with pressurizer tank, pressurizer tank does not show in the accompanying drawings, the upper end has the opening that can link to each other with the gasoline engine cylinder head, the two ends of rotating shaft 3 are installed in the middle part of simulating in the cylinder barrel 1 by instrument with rolling bearing 4, it is installation rolling bearing 4 is left in our junction on the sidewall of last cylinder barrel 11 and following cylinder barrel 12 along the axis symmetry of simulation cylinder barrel the poroid installation gap 111 of semicircle, 121, after last cylinder barrel 11 and 12 combinations of following cylinder barrel, the described installation gap 111 of going up cylinder barrel 11 and following cylinder barrel 12 upper side walls, 121 profiles are just in time corresponding with rolling bearing 4, rotating shaft 3 and the axis normal of simulating cylinder barrel 1.
Shown in Fig. 3,4, the described blade 2 that tests the speed is ringwise laminar, and its thickness only has 0.5～0.6mm, and its diameter is 0.92 times of simulation cylinder barrel 1 diameter; At the middle part of rotating shaft 3 along the slotted eye 31 that it has on axially and the blade 2 that tests the speed matches, the blade 2 that tests the speed interts in slotted eye 31 and adjusts an axle both sides blade and expose size and equate and do static equilibrium that the middle part of the blade 2 that will test the speed at last is bonded and fixed in the slotted eye 31 by a kind of rapid chemical cementing agent.
The course of work of the present invention and principle are such:
During use gasoline engine cylinder head 5 or simulation cylinder head are placed on the top of simulating cylinder barrel, the air intake duct 51 of gasoline engine cylinder head 5 communicates with simulation cylinder barrel 1 inside, exhaust duct 52 does not communicate with simulation cylinder barrel 1, seal by exhaust valve, simulation cylinder barrel 1 communicates with pressurizer tank, pressurizer tank does not draw in drawing, but reference background technology, in drawing, only drawn and rolled the current test part, parts such as pressurizer tank, flow rate test, vacuum pump, control are not drawn, because these parts are identical with other system, under the square table of pressurizer tank part in sketch.
The mobile of air produced by vacuum pump, the gasoline engine air inlet is rolled stream and is entered in the simulation cylinder barrel 1 by air intake duct 51, air inlet is rolled stream and is directly acted on the blade 2 that tests the speed of simulating in the cylinder barrel 1, roll in air inlet under the drive of stream, the blade 2 that tests the speed rotates with corresponding rotating speeds, last air-flow flows into pressurizer tank through simulation cylinder barrel 1 bottom, flows through flowmeter (orifice flowmeter) again, is discharged by vacuum pump again.
Reflecting light electricity knotmeter 6 is set outside simulation cylinder barrel 1, certainly also can adopt the device of other existing various blade rotational speeds that can test the speed, be not limited to reflective light electric tachometer 6, this light electric tachometer 6 is the conventional test instrument, can on market, directly buy, the light electric tachometer 7 that the present invention adopts is to go up marine products, model is: fiber amplifier FS-V31 (SOC0), optical fiber FU-7F, camera lens F-2, display PLC (KV-10), we are arranged on suitable height with knotmeter 1 gauge head, after the blade 2 that tests the speed begins to rotate, the light beam directive that light electric tachometer 7 the produces blade 2 that tests the speed, light beam is reflected twice, the blade 2 that then just in time tests the speed rotates a week, will record data at last and carry out data processing through secondary instrument demonstration or input computer, just can estimate the intensity of flow that rolls of whole admission stroke with these data.
Claims (5)
1, a kind of test device for petrol engine duct test tumble flow, include simulation cylinder barrel (1), the blade that tests the speed (2), rotating shaft (3), described rotating shaft (3) is installed in the interior middle part of simulation cylinder barrel (1) by rolling bearing (4), it is characterized in that the described blade that tests the speed (2) in the form of a ring, at the middle part of rotating shaft (3) along the slotted eye (31) that it has on axially and the blade that tests the speed (2) matches, the blade (2) that tests the speed interts in slotted eye (31), and the middle part of the blade (2) that will test the speed is fixed in the slotted eye (31).
2, test device for petrol engine duct test tumble flow according to claim 1 is characterized in that described rotating shaft (3) and the axis normal of simulating cylinder barrel (1).
3, test device for petrol engine duct test tumble flow according to claim 1 is characterized in that the described blade that tests the speed (2) is the ring plate shape, and its thickness only has 0.5～0.6mm, and its diameter is 0.92 times of the simulation cylinder barrel.
4, according to claim 1 or 2 or 3 described test device for petrol engine duct test tumble flow, it is characterized in that described simulation cylinder barrel (1) by last cylinder barrel (11) and following cylinder barrel (12) be combined into, the poroid installation gap of semicircle (111,121) that rolling bearing (4) is installed is left along the axis symmetry of simulation cylinder barrel in the junction on the sidewall of last cylinder barrel (11) and following cylinder barrel (12).
5, test device for petrol engine duct test tumble flow according to claim 1 is characterized in that the described blade that tests the speed (2) is bonded and fixed in the slotted eye (31) of rotating shaft (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100672333A CN100510682C (en) | 2007-02-09 | 2007-02-09 | Test device for petrol engine duct test tumble flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100672333A CN100510682C (en) | 2007-02-09 | 2007-02-09 | Test device for petrol engine duct test tumble flow |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101038238A CN101038238A (en) | 2007-09-19 |
| CN100510682C true CN100510682C (en) | 2009-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100672333A Expired - Fee Related CN100510682C (en) | 2007-02-09 | 2007-02-09 | Test device for petrol engine duct test tumble flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100510682C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100595549C (en) * | 2007-12-21 | 2010-03-24 | 天津大学 | Device for measuring internal combustion engine in-cylinder tumble flow or vortex |
| CN202330026U (en) * | 2011-10-08 | 2012-07-11 | 天津空中代码工程应用软件开发有限公司 | Steady flow test bed for measuring performance of engine intake systems |
| CN108979912A (en) * | 2018-08-17 | 2018-12-11 | 全椒县全动机械有限公司 | A kind of air-intake of combustion engine tumble flow measurement structure |
| CN110987446B (en) * | 2019-12-23 | 2021-07-27 | 吉林大学 | Optical diesel engine test bed with air inlet inner wall structure convenient to replace |
-
2007
- 2007-02-09 CN CNB2007100672333A patent/CN100510682C/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 直喷式柴油机进气道稳流试验台参数的测定. 许振忠，吕筱萍.汽车技术，第12期. 2002 |
| 直喷式柴油机进气道稳流试验台参数的测定. 许振忠，吕筱萍.汽车技术，第12期. 2002 * |
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| Publication number | Publication date |
|---|---|
| CN101038238A (en) | 2007-09-19 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20070919 Assignee: Ningbo Yinzhou Delight Technology Co.,Ltd. Assignor: Zhao Tieliang Contract record no.: 2011330000570 Denomination of invention: Test device for petrol engine duct test tumble flow Granted publication date: 20090708 License type: Exclusive License Record date: 20110523 |
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Granted publication date: 20090708 Termination date: 20170209 |
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| CF01 | Termination of patent right due to non-payment of annual fee |