CN201355306Y - Inlet tumble measuring converter for engine air-flue test bed - Google Patents
Inlet tumble measuring converter for engine air-flue test bed Download PDFInfo
- Publication number
- CN201355306Y CN201355306Y CNU2008201579914U CN200820157991U CN201355306Y CN 201355306 Y CN201355306 Y CN 201355306Y CN U2008201579914 U CNU2008201579914 U CN U2008201579914U CN 200820157991 U CN200820157991 U CN 200820157991U CN 201355306 Y CN201355306 Y CN 201355306Y
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Abstract
The utility model discloses an inlet tumble measuring converter for an engine air-flue test bed, which comprises a cuboid box. The upper part of the front panel of the box is open; an installation plate provided with a circular hole is arranged at the opening of the upper part of the front panel; the circular hole is in the center of the opening of the upper part of the front panel; and the opening is provided with a flange. One side of the installation plate is provided with a positioning plate which is provided with a waist-shaped hole; and a bolt passing through the waist-shaped hole fixes the positioning plate on the installation plate. The inlet-air tumble measuring converter is applicable to an engine air-flue test bed, and inlet-air tumble sucked in from a cylinder cover of an engine to be measured or an air passage of an air passage box is output to a swirl torque meter to be measured after flowing through the converter. An engine inlet tumble measuring device with the inlet tumble measuring converter adopts a vacuum air-sucking mode, which accords with the actual operation state of the engine; principal measuring instruments such as the swirl torque meter and the like are fixed in a bottom-mounted mode, which brings great convenience to measurement.
Description
Technical field
The utility model relates to the air inlet of engine air flue testing table and rolls the current test device.
Background technology
Engine as herein described specially refers to four-stroke reciprocating internal combustion, and engine is finished a working cycle and comprised air inlet, compression, burning expansion and four processes of exhaust.In intake process, suck fresh air (being applicable to diesel engine work mode usually) or fuel and Air mixing gas (being applicable to the gasoline engine working method usually) by air intake duct.In order to improve fuel and air mixing and burning in cylinder, in diesel engine, wish that generally intake process finishes after, the gas in the cylinder produces certain eddy current around cylinder-bore axis; Wish then that in gasoline engine combination gas in the cylinder produces certain vertical with cylinder-bore axis stream that rolls.
No matter be that stream is rolled in intake swirl or air inlet, its flow strength all must satisfy the needs of combustion process.Usually flow strength is an eddy current or roll the evaluation recently of circulation speed and engine speed in the cylinder when finishing with intake process, is called swirl ratio; In addition, produce eddy current or roll to fail to be convened for lack of a quorum and follow flow losses, these flow losses are normally represented with the measured discharge in the flow process and the integral mean of the ratio of theoretical delivery, are called average flow coefficient.These two parameters are all represented with nondimensional number.General in the engine R﹠D process all will be by repetition test on special air flue test table apparatus to air flue core box or entity cylinder cap, the design and the manufacturing of air flue added their confirmation.In the engine batch production process, also must inspect by random samples, to guarantee engine performance the air flue manufacturing stability on the cylinder cap.
Existing engine charge eddy current proving installation as shown in Figure 1, tested cylinder head or air flue core box 1 are connected to eddy current momentum meter 4 by simulation cylinder 3, then through the two poles of the earth, front and back tube of pressure-stabilizing 5,6 with take over 13 and link to each other with vacuum pump.Torque sensor 7, differential pressure pickup 8, temperature sensor 9 and flow sensor 10 are installed in eddy current momentum meter 4, tube of pressure-stabilizing 5,6 and connecting line, and all the sensors output signal all enters computer data acquiring and disposal system 11.The intake swirl 30 that sucks from the air flue import enters eddy current momentum meter 4, and its eddy current momentum is absorbed and is converted to rotating torque, enters computer data acquiring and disposal system 11 by torque sensor 7 output signals.
Roll the just project of development in recent years of current test for engine charge, do not see that there is the report of using this proving installation in domestic other unit at present, abroad the similar measurement of rolling stream for air inlet is to adopt pressure blowing mode.
The utility model content
The purpose of this utility model is to provide the air inlet of a kind of engine air flue testing table to roll the flow measurement converter, and it is to cooperate engine charge to roll the current test device that the flow measurement converter is rolled in this air inlet, and it is simple in structure, and is easy for installation.
The utility model is achieved in that the air inlet of a kind of engine air flue testing table rolls the flow measurement converter, comprise a rectangular-shaped casing, the front plate upper opening of casing, installing plate is equipped with at front plate upper opening place, have circular hole on the installing plate, circular hole is positioned at center, front plate upper opening place, rectangular parallelepiped casing bottom opening, and opening part is equipped with joint flange.
Described installing plate one side also is equipped with location-plate, has mounting hole on the location-plate, and bolt passes mounting hole location-plate is fixed on the installing plate.
Air inlet of the present utility model is rolled the flow measurement converter and is applicable to the engine air flue testing table, be to detect from exporting to eddy current momentum meter after the converter of flowing through is rolled in the air inlet that the air flue import of tested engine cylinder cap or air flue core box sucks, comprise that engine charge of the present utility model rolls the current test device and adopts the vacuum suction mode, more meet engine real work situation, and main surveying instrument such as eddy current momentum meter is lower fixed, for measurement brings bigger convenience.
Description of drawings
Fig. 1 is existing engine charge eddy current proving installation structural representation;
Fig. 2 contains the air inlet of the utility model engine air flue testing table to roll the engine charge of flow measurement converter and roll current test apparatus structure synoptic diagram;
Fig. 3 is that A-A among Fig. 2 is to cut-open view;
Fig. 4 rolls an example structure synoptic diagram of flow measurement converter for the air inlet of the utility model engine air flue testing table; Wherein: a is a front elevation, and b is that B-B among Fig. 4 a is to cut-open view;
Fig. 5 rolls another example structure synoptic diagram of flow measurement converter for the air inlet of the utility model engine air flue testing table; Wherein: a is a front elevation, and b is that C-C among Fig. 5 a is to cut-open view.
Among the figure: 1 tested cylinder head or air flue core box, 2 valve lift adjustment mechanism, 3 simulation cylinders, 4 eddy current momentum meters, 5,6 tube of pressure-stabilizing, 7 torque sensors, 8 differential pressure pickups, 9 temperature sensors, 10 flow sensors, 11 computer data acquirings and disposal system, 12 pressure regulator valves, 13 (to vacuum pumps) are taken over, 14 transition extend necks, 15 air flue imports, 20 roll stream transformer, 21 casings, 22 front plate, 23 installing plates, 24 location-plates, 25 joint flanges, 26 mounting holes, 27 bolts, 30 intake swirls, stream is rolled in 31 air inlets.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Referring to Fig. 4, embodiment 1, and the short type converter of flow measurement is rolled in the air inlet of a kind of engine air flue testing table, or claims standard converter, comprise a rectangular-shaped casing 21, front plate 22 upper openings of casing 21, installing plate 23 is equipped with at front plate 22 upper opening places, has circular hole on the installing plate 23, circular hole is positioned at center, front plate 22 upper opening place, installing plate 23 by around three bolts and two register pins fix with front plate 22, casing 21 bottom openings, opening part is equipped with joint flange 25.Describedly in installing plate 23 1 sides location-plate 24 is housed also, has mounting hole 26 on the location-plate 24, bolt 27 passes mounting hole 26 location-plate 25 is fixed on the installing plate 23.Fitting in the air flue endpiece plane of circular hole on the installing plate 23 and tested cylinder head or air flue core box 1, fixes with anchor clamps; Location-plate 24 is used for the lateral register of tested cylinder head or air flue core box 1, and its position can be adjusted by mounting hole 26, is fixed on the installing plate 23 with two bolts 27.For same tested cylinder head or air flue core box 1, the position of location-plate 24 is fixed, when after tested cylinder head or air flue core box 1 are removed modification, reinstalling test again, as long as the one side leans against on location-plate 24 limits, its lateral position just can remain unchanged, can simplify the installation site like this and adjust the time, improve the precision of duplicate measurements.The joint flange 25 at casing 21 bottom opening places is to be used for being fixed on transition extend neck 14 with rolling the flow measurement converter.
Referring to Fig. 5, embodiment 2, and flow measurement elongated converter is rolled in the air inlet of a kind of engine air flue testing table, and its structure is substantially the same manner as Example 1, are that rectangular-shaped casing 21 is more longer.
Stream is rolled in the 1st cylinder in need only measuring the four-cylinder cylinder head or the air inlet of the 4th cylinder, or only measures air inlet when rolling stream with the air flue core box, rolls stream transformer and gets final product with lacking type.When stream is rolled in the air inlet that must measure 1,2,3,4 cylinders in the four-cylinder cylinder head respectively, then need to adopt elongated to roll stream transformer.Because flow losses are bigger, roll the test result of stream transformer with elongated and must revise.
Containing the air inlet of the utility model engine air flue testing table rolls the engine charge of flow measurement converter to roll the current test course of work as follows:
Referring to Fig. 2, Fig. 3, tested cylinder head or air flue core box 1 are fixed in air inlet by anchor clamps and roll on the stream transformer 20, air inlet roll stream transformer 20 through transition extend neck 14, eddy current momentum meter 4, the two poles of the earth, front and back tube of pressure-stabilizing 5,6, take over 13 and link to each other with vacuum pump.Valve stroke in tested cylinder head or the air flue core box 1 is adjusted by valve lift adjustment mechanism 2.Torque sensor 7, differential pressure pickup 8, temperature sensor 9 and flow sensor 10 are installed in eddy current momentum meter 4, tube of pressure-stabilizing 5,6 and connecting line, and all the sensors output signal all enters computer data acquiring and disposal system 11.The stream 31 that rolls that sucks from air flue import 15 enters eddy current momentum meter 4 after rolling stream transformer 20, transition extend neck 14, its eddy current momentum is absorbed and is converted to rotating torque, by torque sensor 7 output signals.Comprise engine elementary structure parameter and operational factor from the data of the artificial input of computing machine, as engine bore, stroke, valve throat diameter, valve stroke with crank angle delta data, engine speed etc.; The data of computer-automatic collection have pressure reduction and flow, the gas flow temperature etc. of eddy current momentum moment, the air flue of flowing through.Test employings waits pressure differential method, the pressure differential maintain constant (being controlled by pressure regulator valve 12) of the air flue of promptly flowing through during the different air valve lift.Machine is handled the data of exporting the back and is mainly contained swirl ratio and average flow coefficient as calculated, is nondimensional number, is the major parameter of evaluation air flue performance.
Comprise that engine charge of the present utility model rolls the current test device and adopts the vacuum suction mode, more meet engine real work situation, and main surveying instrument such as eddy current momentum meter is lower fixed, for measurement brings bigger convenience.
Claims (2)
1, the flow measurement converter is rolled in the air inlet of a kind of engine air flue testing table, it is characterized in that: comprise a rectangular-shaped casing, the front plate upper opening of casing, installing plate is equipped with at front plate upper opening place, have circular hole on the installing plate, circular hole is positioned at center, front plate upper opening place, rectangular parallelepiped casing bottom opening, and opening part is equipped with joint flange.
2, the flow measurement converter is rolled in engine air flue testing table according to claim 1 air inlet, it is characterized in that: described installing plate one side also is equipped with location-plate, has mounting hole on the location-plate, and bolt passes mounting hole location-plate is fixed on the installing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201579914U CN201355306Y (en) | 2008-12-26 | 2008-12-26 | Inlet tumble measuring converter for engine air-flue test bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201579914U CN201355306Y (en) | 2008-12-26 | 2008-12-26 | Inlet tumble measuring converter for engine air-flue test bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201355306Y true CN201355306Y (en) | 2009-12-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201579914U Expired - Fee Related CN201355306Y (en) | 2008-12-26 | 2008-12-26 | Inlet tumble measuring converter for engine air-flue test bed |
Country Status (1)
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| CN (1) | CN201355306Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101929920A (en) * | 2010-06-03 | 2010-12-29 | 天津大学 | Device for measuring parameters of fluid in air inlet of gasoline engine cylinder cover |
| WO2013049985A1 (en) * | 2011-10-08 | 2013-04-11 | Lu Ming | Stabilized current test platform for measuring performance of engine air inlet system |
| CN103245510A (en) * | 2013-04-19 | 2013-08-14 | 天津大学 | Fast test device capable of simultaneously measuring air passage eddy and tumble of gasoline engine |
| CN104316325A (en) * | 2014-08-15 | 2015-01-28 | 安徽江淮汽车股份有限公司 | Simulated cylinder sleeve for engine airway |
| 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 |
| CN113405801A (en) * | 2021-08-19 | 2021-09-17 | 潍柴动力股份有限公司 | Rolling flow test tool and rolling flow test equipment |
-
2008
- 2008-12-26 CN CNU2008201579914U patent/CN201355306Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101929920A (en) * | 2010-06-03 | 2010-12-29 | 天津大学 | Device for measuring parameters of fluid in air inlet of gasoline engine cylinder cover |
| WO2013049985A1 (en) * | 2011-10-08 | 2013-04-11 | Lu Ming | Stabilized current test platform for measuring performance of engine air inlet system |
| CN103245510A (en) * | 2013-04-19 | 2013-08-14 | 天津大学 | Fast test device capable of simultaneously measuring air passage eddy and tumble of gasoline engine |
| CN103245510B (en) * | 2013-04-19 | 2015-06-03 | 天津大学 | Fast test device capable of simultaneously measuring air passage eddy and tumble of gasoline engine |
| CN104316325A (en) * | 2014-08-15 | 2015-01-28 | 安徽江淮汽车股份有限公司 | Simulated cylinder sleeve for engine airway |
| 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 |
| CN113405801A (en) * | 2021-08-19 | 2021-09-17 | 潍柴动力股份有限公司 | Rolling flow test tool and rolling flow test equipment |
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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 |
Granted publication date: 20091202 Termination date: 20141226 |
|
| EXPY | Termination of patent right or utility model |