CN113405801B - Rolling flow test tool and rolling flow test equipment - Google Patents
Rolling flow test tool and rolling flow test equipment Download PDFInfo
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- CN113405801B CN113405801B CN202110951814.3A CN202110951814A CN113405801B CN 113405801 B CN113405801 B CN 113405801B CN 202110951814 A CN202110951814 A CN 202110951814A CN 113405801 B CN113405801 B CN 113405801B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
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- Combustion & Propulsion (AREA)
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a tumble testing tool and tumble testing equipment, wherein the tumble testing tool comprises a positioning platform, a simulation cylinder sleeve and a tumble testing component, the positioning platform is provided with an installation port, a main body of the simulation cylinder sleeve is positioned below the positioning platform, an upper end opening of the simulation cylinder sleeve is butted with the installation port, a main body of the tumble testing component is positioned inside the simulation cylinder sleeve, the simulation cylinder sleeve is connected to the positioning platform in an angle-adjustable manner around the axis direction of the simulation cylinder sleeve, and/or the tumble testing component is connected to the simulation cylinder sleeve in an angle-adjustable manner around the axis direction of the simulation cylinder sleeve. The tumble testing tool provided by the invention can be used for tumble testing on the premise of not rotating the cylinder cover to be tested, is convenient to operate, and greatly reduces the space occupied by testing equipment.
Description
Technical Field
The invention relates to the technical field of production testing of engine cylinder covers, in particular to a tumble testing tool and tumble testing equipment.
Background
The organization of the air flow in the cylinder of the internal combustion engine has decisive influence on the formation of the mixed air and the combustion process in the cylinder, meanwhile, the quality of the combustion in the cylinder deeply influences the indexes of the engine such as dynamic property, economical efficiency and emission, and the good air flow organization plays an important role in improving the combustion rate and improving the mixing of the air in the cylinder and the unburned fuel. In the combustion process of gas engine and gasoline engine, the tumble flow with certain intensity is introduced to raise the propagation rate of flame in the cylinder and inhibit the combustion circulation change. The tumble flow has less momentum attenuation in the compression process, can be reserved to the end stage of a compression stroke, and along with the progress of the compression stroke, the large-scale tumble flow is broken into a plurality of small-scale turbulence flows, so that the turbulence intensity and the turbulence kinetic energy are increased, the in-cylinder combustion is favorably improved, and the engine performance is improved.
The existing tumble testing method and device mainly aim at a parallel air inlet channel (an inlet valve connecting line 011 is parallel to the axis of a crankshaft), as shown in fig. 1, the existing tumble testing device generally comprises an air flow channel test bed 010 (used for bearing a cylinder cover 01 or a core box to be tested and in butt joint with an air channel), a pressure stabilizing cylinder 03, a flowmeter 07, a pressure stabilizing box 08, a fan 09, a pressure sensor 06, a collector 05, a computer 04 and the like, the installation position relation of the cylinder cover 01 to be tested with the parallel air inlet channel and the air flow channel test bed 010 is shown in fig. 3, a honeycomb body testing device 02 in the air flow channel test bed 010 is used for detecting the tumble ratio generated by the parallel air inlet channel of the cylinder cover 01 to be tested, and a tumble signal 012 is shown in fig. 2.
And when utilizing above-mentioned current testing arrangement to test the tumble flow of slope air flue (intake valve line 011 and bent axle axis are certain angle), need the cylinder head that awaits measuring rotatory certain angle relative test bench, as shown in fig. 4, the tumble flow direction that just so can make the intake duct produce is unanimous with the test direction of air current passageway test bench 010, just can guarantee to measure accurately, and adopt above-mentioned arrangement, can make the width of test bench need increase about three times, lead to testing arrangement occupation space great, and simultaneously, be not convenient for the installation and the measurement of cylinder head.
Therefore, how to conveniently perform tumble test on the cylinder head with the inclined air passage and reduce the space occupied by the testing device is a technical problem to be solved by those skilled in the art at present.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a tumble testing tool and a tumble testing apparatus, which can conveniently perform a tumble test on a cylinder head having an inclined air passage, and at the same time, can greatly reduce the space occupied by the testing apparatus.
The invention provides a tumble testing tool which comprises a positioning platform, a simulation cylinder sleeve and a tumble testing component, wherein the positioning platform is provided with an installation opening, a main body of the simulation cylinder sleeve is positioned below the positioning platform, an opening at the upper end of the simulation cylinder sleeve is butted with the installation opening, a main body of the tumble testing component is positioned on the inner side of the simulation cylinder sleeve, the simulation cylinder sleeve is connected to the positioning platform in an angle-adjustable manner around the axis direction of the simulation cylinder sleeve, and/or the tumble testing component is connected to the simulation cylinder sleeve in an angle-adjustable manner around the axis direction of the simulation cylinder sleeve.
Preferably, the simulation cylinder sleeve is connected to the positioning platform in a rotating mode around the axis direction of the simulation cylinder sleeve and/or the tumble testing component is connected to the simulation cylinder sleeve in a rotating mode around the axis direction of the simulation cylinder sleeve.
Preferably, the periphery of the simulation cylinder sleeve is provided with an annular matching part which is used for being in running fit with the mounting hole, and/or the side wall of the simulation cylinder sleeve is provided with a sliding groove for the tumble testing component to rotate.
Preferably, the positioning platform is provided with a first locking mechanism for locking the installation angle of the simulation cylinder sleeve, and/or the simulation cylinder sleeve is provided with a second locking mechanism for locking the installation angle of the tumble test component.
Preferably, the positioning platform and the simulation cylinder sleeve are provided with first positioning scales for indicating the installation angle of the simulation cylinder sleeve, and/or the simulation cylinder sleeve and the tumble test component are provided with second positioning scales for indicating the installation angle of the tumble test component.
Preferably, the tumble testing tool further comprises a pressing device for pressing and fixing the cylinder head to be tested on the positioning platform.
Preferably, the dummy cylinder liner is detachably connected to the positioning platform.
Preferably, the positioning platform is provided with a plurality of mounting openings, and one simulation cylinder sleeve is arranged below each mounting opening.
Preferably, the positioning platform comprises a plurality of segmented platforms, each segmented platform is provided with one mounting port, and the adjacent segmented platforms are connected through a spacing adjusting mechanism.
Preferably, the tumble flow test part is an annular vane.
The invention provides a tumble testing tool which is used for tumble testing equipment and specifically comprises a positioning platform, a simulation cylinder sleeve and a tumble testing component, wherein the positioning platform is provided with an installation opening, a main body of the simulation cylinder sleeve is positioned below the positioning platform, an opening at the upper end of the simulation cylinder sleeve is butted with the installation opening, a main body of the tumble testing component is positioned inside the simulation cylinder sleeve, the simulation cylinder sleeve is connected with the positioning platform in an angle-adjustable manner around the axis direction of the simulation cylinder sleeve, and/or the tumble testing component is connected with the simulation cylinder sleeve in an angle-adjustable manner around the axis direction of the simulation cylinder sleeve.
The operating principle of the tumble testing tool provided by the invention is as follows:
before testing, the included angle between the connecting line of the inlet valve of the cylinder cover to be tested and the axis of the crankshaft is determined, then the cylinder cover to be tested is installed and fixed above the positioning platform, and the axis direction of the crankshaft is consistent with the positioning direction of the positioning platform. And adjusting the installation angle of the simulation cylinder sleeve relative to the positioning platform or adjusting the installation angle of the tumble testing component relative to the simulation cylinder sleeve, so that the position and angle of the tumble testing component after adjustment can be suitable for measuring tumble generated by the cylinder cover to be tested. And finally, starting the tumble testing equipment to perform blowing test.
The installation angle between the simulation cylinder sleeve and the positioning platform and/or the installation angle between the tumble testing component and the simulation cylinder sleeve can be adjusted, so that the installation angle and the position of the tumble testing component can be adjusted according to the arrangement inclination angle of the air inlet channel when the tumble testing is performed on the cylinder cover with the inclined air channel, and the tumble testing can be performed under the condition that the direction of the cylinder cover to be tested is consistent with that of the positioning platform.
The invention also provides a tumble testing device which comprises the tumble testing tool. The derivation process of the beneficial effects of the tumble testing equipment is substantially similar to the derivation process of the beneficial effects brought by the tumble testing tool, and therefore, the details are not repeated herein.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a conventional tumble testing apparatus;
FIG. 2 is a schematic diagram of tumble motion generated by a cylinder head to be tested in a test process;
FIG. 3 is a schematic view of a mounting position relationship between a conventional cylinder head to be tested with parallel inlet channels and an airflow channel test bed;
FIG. 4 is a schematic view of a mounting position relationship between a conventional cylinder head to be tested with an inclined inlet channel and an airflow channel test bed;
FIG. 5 is a schematic diagram of the structural arrangement of a tumble flow testing apparatus according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a simulated cylinder liner and annular vane configuration in an exemplary embodiment of the invention;
FIG. 7 is a schematic view of a simulated cylinder liner rotating a certain angle relative to a positioning fixture in an embodiment of the invention;
fig. 8 is a schematic structural view of a cylinder head having inclined gas passages according to an embodiment of the present invention.
The meaning of the various reference numerals in figures 1 to 4 is as follows:
01-a cylinder cover to be tested, 02-a honeycomb body testing device, 03-a pressure stabilizing cylinder, 04-a computer, 05-a collecting instrument, 06-a pressure sensor, 07-a flow meter, 08-a pressure stabilizing box, 09-a fan, 010-an airflow channel test bed, 011-an inlet valve connecting line and 012-tumble flow indication;
the meaning of the various reference numerals in fig. 5 to 8 is as follows:
1-positioning platform, 2-tumble testing component, 3-simulation cylinder sleeve, 4-first positioning scale, 5-positioning direction, 6-crankshaft axis direction, 7-inlet valve connecting line direction, 8-cylinder cover to be tested, 9-pressure stabilizing cylinder, 10-computer, 11-acquisition instrument, 12-fan, 13-frequency converter, 14-air suction pipeline, 15-pressure stabilizing box, 16-flowmeter and 17-pressure sensor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a tumble testing tool, namely a testing tool of tumble testing equipment, which is used for carrying out tumble testing on a cylinder cover 8 or an air passage core box to be tested, and specifically, the tumble testing tool comprises a positioning platform 1, a simulation cylinder sleeve 3 and a tumble testing part 2, wherein the positioning platform 1 is provided with an installation opening, a main body of the simulation cylinder sleeve 3 is positioned below the positioning platform 1, an upper end opening of the simulation cylinder sleeve 3 is butted with the installation opening, the main body of the tumble testing part 2 is positioned inside the simulation cylinder sleeve 3, and the simulation cylinder sleeve 3 is connected to the positioning platform 1 in an angle-adjustable manner around the axial direction of the simulation cylinder sleeve 3 and/or the tumble testing part 2 is connected to the simulation cylinder sleeve 3 in an angle-adjustable manner around the axial direction of the simulation cylinder sleeve 3.
The operating principle of the tumble testing tool provided by the invention is as follows:
before testing, an included angle alpha between the connecting line direction 7 of an inlet valve of the cylinder cover 8 to be tested and the axis direction 6 of the crankshaft is determined, then the cylinder cover 8 to be tested is installed and fixed above the positioning platform 1, and the axis direction 6 of the crankshaft is consistent with the positioning direction 5 of the positioning platform 1. And adjusting the installation angle of the simulated cylinder sleeve 3 relative to the positioning platform 1 or adjusting the installation angle of the tumble testing component 2 relative to the simulated cylinder sleeve 3, so that the position and angle of the tumble testing component 2 after being adjusted can be suitable for measuring tumble generated by the cylinder cover 8 to be measured. And finally, starting the tumble testing equipment to perform blowing test.
Because the installation angle between the simulation cylinder sleeve 3 and the positioning platform 1 and/or the installation angle between the tumble testing component 2 and the simulation cylinder sleeve 3 are/is adjustable, when the tumble testing is performed on the to-be-tested cylinder cover 8 with the inclined air passage, the installation angle and the position of the tumble testing component 2 can be adjusted according to the arrangement inclination angle of the air inlet channel, so that the tumble testing can be performed under the condition that the direction of the to-be-tested cylinder cover 8 is consistent with that of the positioning platform 1.
It should be noted that the simulated cylinder sleeve 3 in the invention can be adjusted in installation angle with the positioning platform 1 in various ways, and the tumble test component 2 can also be adjusted in installation angle with the simulated cylinder sleeve 3 in various ways, for example, the simulated cylinder sleeve 3 is rotatably connected to an installation opening of the positioning platform 1, and the simulated cylinder sleeve 3 can be rotated when the angle and position of the tumble test component 2 need to be adjusted, so that the simulated cylinder sleeve 3 and the tumble test component 2 rotate by a certain angle relative to the positioning platform 1; or, can also design the junction of simulation cylinder liner 3 and installing port as detachable construction to design the installing port inner circle into polygon location structure, when the installation angle that needs to change simulation cylinder liner 3, can turn certain angle after dismantling simulation cylinder liner 3, install again in the polygon installing port, thereby realize installation angle's regulation. The tumble testing component 2 can be rotatably connected to the inner side of the simulation cylinder sleeve 3, or a plurality of positioning holes can be formed in the circumferential side wall of the simulation cylinder sleeve 3, so that the purpose of adjusting the installation angle of the tumble testing component 2 relative to the simulation cylinder sleeve 3 can be realized when the end part of the tumble testing component 2 is installed in different positioning holes.
In a preferred scheme, the function of adjusting the installation angle is realized in a rotating connection mode, specifically, the simulation cylinder sleeve 3 is rotatably connected to the positioning platform 1 around the axis direction of the simulation cylinder sleeve 3, and/or the tumble testing component 2 is rotatably connected to the simulation cylinder sleeve 3 around the axis direction of the simulation cylinder sleeve 3.
Further preferably, the outer periphery of the simulation cylinder liner 3 is provided with an annular fitting portion for rotationally fitting with the mounting port, and/or the side wall of the simulation cylinder liner 3 is provided with a sliding groove for the tumble testing member 2 to rotate. Wherein, the spout can be seted up at the inner wall of simulation cylinder liner 3, and the length of spout can be set up according to the angle control scope of tumble test component 2, for example, when the angle control scope of tumble test component 2 is 180, the length of spout can be half or whole of simulation cylinder liner 3 inner wall circumference, and the tip and the spout sliding fit of tumble test component 2 only need rotate tumble test component 2 when needing to adjust can.
Preferably, the positioning platform 1 is provided with a first locking mechanism for locking the mounting angle of the dummy cylinder 3 and/or the dummy cylinder 3 is provided with a second locking mechanism for locking the mounting angle of the tumble test part 2. Through setting up first locking mechanical system and/or second locking mechanical system, can lock its position after adjusting the installation angle of simulation cylinder liner 3 and/or tumble test part 2 to avoid its angle to change at the in-process of carrying out the test of blowing, guarantee to blow the test and go on smoothly.
Specifically, the first locking mechanism and/or the second locking mechanism may have various implementation forms, for example, a plurality of positioning holes are circumferentially arranged at the mounting opening of the positioning platform 1, a flange is arranged at the periphery of the simulation cylinder sleeve 3 and is provided with a positioning hole, and when the simulation cylinder sleeve 3 is adjusted to a target mounting angle, the positioning holes of the simulation cylinder sleeve 3 and the flange are penetrated by a positioning pin, so that the mounting angle of the simulation cylinder sleeve 3 can be locked; a plurality of positioning grooves can be formed in the inner wall of the simulation cylinder sleeve 3, when the tumble testing component 2 is adjusted to a target installation angle, the locking function can be achieved by the aid of limiting clamping effect of the end portion of the tumble testing component 2 and the positioning grooves, and the like.
Preferably, the positioning platform 1 and the simulation cylinder sleeve 3 are provided with a first positioning scale 4 for indicating the installation angle of the simulation cylinder sleeve 3, and/or the simulation cylinder sleeve 3 and the tumble testing component 2 are provided with a second positioning scale for indicating the installation angle of the tumble testing component 2. As shown in fig. 7, the first positioning scale 4 is disposed at the periphery of the mounting opening of the positioning platform 1, and includes a plurality of scale lines evenly distributed along the circumferential direction of the mounting opening, because the crankshaft axis direction 6 of the cylinder head 8 to be tested is consistent with the positioning direction 5 of the positioning platform 1, and the included angle α between the intake valve connecting line direction 7 of the cylinder head 8 and the crankshaft axis direction 6 is measured, in order to make the tumble testing component 2 suitable for testing the tumble motion generated by the cylinder head 8 to be tested, the included angle β between the tumble testing component 2 and the positioning direction 5 needs to be adjusted to be equal to the included angle α.
Preferably, the tumble testing tool further comprises a pressing device for pressing and fixing the cylinder head 8 to be tested on the positioning platform 1. Specifically, the pressing device may have a plurality of implementation forms, for example, a bolt fastening manner, or a cam pressing structure, or a clamping mechanism, etc., which are not described in detail herein.
It should be noted that the simulation cylinder sleeve 3 in the present invention can be rotatably connected to the positioning platform 1, or can be detachably connected to the positioning platform 1, preferably, the simulation cylinder sleeve 3 in the present embodiment is detachably connected to the positioning platform 1, and thus, when the cylinder heads corresponding to different cylinder diameters need to be tested, the simulation cylinder sleeves 3 of different specifications can be replaced to meet the testing requirements.
In a preferred scheme, the positioning platform 1 is provided with a plurality of mounting openings, and a simulation cylinder sleeve 3 is arranged below each mounting opening. By the arrangement, the testing requirement of the multi-cylinder cover can be met.
Because the number of cylinders and each cylinder interval that the cylinder heads of different specifications correspond have the difference, consequently, in order to make this tumble test fixture can be applicable to the cylinder head that detects various interval specifications, this scheme designs tumble test fixture for installing a mouthful interval adjustable structural style, and then realizes the interval adjustable function of simulation cylinder liner 3.
Specifically, positioning platform 1 in this scheme includes a plurality of segmentation platforms, is provided with a installing port on every segmentation platform, and links to each other through interval adjustment mechanism between the adjacent segmentation platform. The distance adjusting mechanism can be implemented in various forms, for example, a gear and rack adjusting mechanism, or a screw and nut adjusting mechanism, or an air cylinder telescopic rod adjusting mechanism, and the like. Preferably, interval adjustment mechanism in this scheme includes adjusting screw and lock nut, can all be connected through adjusting screw series between each segmentation platform, and every segmentation platform all sliding connection is in adjusting screw, can adjust the interval of adjacent segmentation platform when loosening lock nut, adjusts to after the target interval, can fix the position of segmentation platform along adjusting screw through screwing up lock nut to interval regulatory function has been realized.
It should be noted that the tumble flow test unit 2 in the present invention is used for detecting the strength of the tumble motion, and various tumble flow test elements can be specifically adopted, and preferably, the tumble flow test unit 2 in the present embodiment is an annular blade, as shown in fig. 6.
The invention also provides a tumble testing device which comprises the tumble testing tool. The derivation process of the beneficial effects of the tumble testing equipment is substantially similar to the derivation process of the beneficial effects brought by the tumble testing tool, and therefore, the details are not repeated herein.
It should be noted that the tumble testing apparatus provided in this embodiment further includes a pressure stabilizing cylinder 9, a computer 10, a collecting instrument 11, a fan 12, a frequency converter 13, an air suction pipeline 14, a pressure stabilizing box 15, a flow meter 16, a pressure sensor 17, and other components, as shown in fig. 5. When the tumble testing equipment is used for blowing test, a cylinder cover 8 to be tested or an air passage core box is arranged on the positioning platform 1, the simulation cylinder sleeve 3 is arranged below the positioning platform 1, a tumble testing part 2 is arranged inside the simulation cylinder sleeve 3 and used for measuring a tumble ratio, the tumble testing part 2 and the simulation cylinder sleeve 3 can rotate around the axis of the simulation cylinder sleeve 3, and the blowing test can be performed after the angle is fixed. The rotating speed of the fan 12 is controlled by a frequency converter 13, a flow meter 16 is used for detecting the flow in the simulation cylinder sleeve 3 and the pipeline, and a pressure stabilizing box 15 is arranged on an air suction pipeline 14 between the flow meter 16 and the fan 12 to play a role in stabilizing air flow. The pressure sensor 17 is used to detect the pressure inside the dummy cylinder 3. The pressure stabilizing cylinder 9 is connected below the simulation cylinder sleeve 3 and also plays a role in stabilizing pressure. The frequency converter 13, the two flowmeters 16, the tumble testing component 2 and the pressure sensor 17 are connected with the acquisition instrument 11, and the acquisition instrument 11 is responsible for inputting and outputting signals. The acquisition instrument 11 is connected with the computer 10, and the computer 10 is used for monitoring the gas flow and the pressure value of equipment and controlling the flow of the air suction pipeline 14 by controlling the frequency of the frequency converter 13.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A tumble testing tool is characterized by comprising a positioning platform, a simulation cylinder sleeve and a tumble testing component, the positioning platform is provided with a mounting opening, the main body of the simulation cylinder sleeve is positioned below the positioning platform, the upper end opening of the simulation cylinder sleeve is butted with the mounting opening, the main body of the tumble testing component is positioned at the inner side of the simulation cylinder sleeve, the simulation cylinder sleeve is connected with the positioning platform in an angle-adjustable manner around the axis direction of the simulation cylinder sleeve and/or the tumble testing component is connected with the simulation cylinder sleeve in an angle-adjustable manner around the axis direction of the simulation cylinder sleeve, the positioning platform is provided with a plurality of mounting openings, one simulation cylinder sleeve is arranged below each mounting opening, the positioning platform comprises a plurality of segmented platforms, each segmented platform is provided with one mounting port, and the adjacent segmented platforms are connected through a spacing adjusting mechanism.
2. The tumble testing tool according to claim 1, wherein the simulation cylinder sleeve is rotatably connected to the positioning platform around the axis direction of the simulation cylinder sleeve and/or the tumble testing component is rotatably connected to the simulation cylinder sleeve around the axis direction of the simulation cylinder sleeve.
3. The tumble flow testing tool according to claim 2, characterized in that an annular fitting portion for rotationally fitting with the mounting port is provided on the outer periphery of the simulation cylinder liner, and/or a sliding groove for the tumble flow testing component to rotate is provided on a side wall of the simulation cylinder liner.
4. The tumble flow testing tool according to claim 1, wherein the positioning platform is provided with a first locking mechanism for locking the installation angle of the simulation cylinder sleeve, and/or the simulation cylinder sleeve is provided with a second locking mechanism for locking the installation angle of the tumble flow testing component.
5. The tumble flow testing tool according to claim 1, wherein the positioning platform and the simulation cylinder sleeve are provided with first positioning scales for indicating the installation angle of the simulation cylinder sleeve, and/or the simulation cylinder sleeve and the tumble flow testing component are provided with second positioning scales for indicating the installation angle of the tumble flow testing component.
6. The tumble flow testing tool according to claim 1, further comprising a pressing device for pressing and fixing the cylinder head to be tested on the positioning platform.
7. The tumble flow test tool according to claim 1, wherein the simulation cylinder sleeve is detachably connected to the positioning platform.
8. The tumble flow test tool according to any one of claims 1 to 7, wherein the tumble test member is an annular blade.
9. A tumble flow testing apparatus comprising a tumble flow testing tool according to any one of claims 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110951814.3A CN113405801B (en) | 2021-08-19 | 2021-08-19 | Rolling flow test tool and rolling flow test equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110951814.3A CN113405801B (en) | 2021-08-19 | 2021-08-19 | Rolling flow test tool and rolling flow test equipment |
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| CN113405801A CN113405801A (en) | 2021-09-17 |
| CN113405801B true CN113405801B (en) | 2021-12-21 |
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