CN101281094B - Stepless speed changing engine performance measuring system - Google Patents
Stepless speed changing engine performance measuring system Download PDFInfo
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- CN101281094B CN101281094B CN2008100697246A CN200810069724A CN101281094B CN 101281094 B CN101281094 B CN 101281094B CN 2008100697246 A CN2008100697246 A CN 2008100697246A CN 200810069724 A CN200810069724 A CN 200810069724A CN 101281094 B CN101281094 B CN 101281094B
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Abstract
The utility model relates to an engine performance test system, which is provided with a first flywheel and a second flywheel arranged on the axis of the driving wheel of an automatic clutch side by side. The first flywheel is connected with the spline of the axis of the driving wheel of the automatic clutch. The second flywheel is looped on the axis of the driving wheel of the automatic clutch. The abutting end of the first wheel and the second wheel is provided with teeth. The driving teeth of the first wheel and the driven teeth of the second wheel are respectively inserted in corresponding key walls of a shock-absorbing sleeve. The driving teeth and the driven teeth are arranged at regular intervals. The second flywheel is covered with a connection sheath which is connected with the spline of the second flywheel. The utility model can accurately reflect the operational state of engines, accurately detect the performance parameter of engines, effectively prevent the bent axle of engines or the axis of the driving wheel of the clutch and a dynamometer machine from being damaged and ensure the experiment going with a swing when the engine performance is tested by simulating the structure of the fixed disk combination and the sliding disk combination of the driving wheel of engines. The utility model is suitable for stepless speed change engines of big and small delivery capacity.
Description
Technical field
The invention belongs to engine performance detection technique field, relate in particular to a kind of engine performance measuring system.
Background technology
Along with the raising of infinite variable speed superiority and manufacture level, there are a lot of motorcycles all to adopt stepless variable engine now, particularly more general on extraordinary motorcycle (beach buggy, kart, farmer's car etc.).The inner structure of stepless variable engine as shown in figure 10, generally comprise bent axle 9, piston crank linkage assembly 10, automatic lookup clutch 11, driving wheel shaft collar combination 12, driving wheel slider disc combination 13, engaged wheel combination 14, main shaft 15 and gear 16, wherein the drive sprocket axle 1 of automatic lookup clutch 11 is connected with bent axle 9 by spline, driving wheel shaft collar combination 12 and driving wheel slider disc combination 13 all are sleeved on the drive sprocket axle 1, and make up 14 by belt 17 and engaged wheel on the main shaft 15 and be connected.For whether performance parameters such as the power of detection of engine under different operating modes (rotating speed) condition, moment of torsion, oil consumption reach the design request for utilization, need carry out Performance Detection to engine by dynamometer machine.Because the ratio of gear of belt transmission is not a determined value, therefore can not directly connects dynamometer machine at the output shaft of engine and detect.Traditional detection mode all is to test (installation site of no dynamometer machine input shaft on because of drive sprocket axle) after shaft collar combination of dismounting engine driving wheel and the combination of driving wheel slider disc.During test, be connected by shaft coupling between dynamometer machine input shaft and automatic lookup clutch drive sprocket axle or the bent axle, its weak point is:
1, for the smaller engine of discharge capacity, though can finish engine performance measuring, but after shaft collar combination of dismounting engine driving wheel and the combination of driving wheel slider disc, the engine moving equilibrium is influenced, therefore the operation conditions that can not truly reflect engine tests the actual performance that the data that draw can not reflect engine.
2, for the bigger engine of discharge capacity, combination of engine driving wheel shaft collar and driving wheel slider disc have made up balanced rotation inertia and cushioning effect, detect after the dismounting, have the problem that the engine moving equilibrium is influenced, can not truly reflect the engine operation conditions on the one hand; On the other hand, crankshaft operation can produce very big vibration, if without balance and damping directly to the dynamometer machine input torque, damage engine crankshaft or clutch coupling drive sprocket axle easily, also might damage dynamometer machine, cause experiment to carry out, even test reluctantly, the data that test draws can not reflect the actual performance of engine.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of engine performance measuring system, with the performance of accurate detection of engine.
Technical scheme of the present invention is as follows: a kind of engine performance measuring system, comprise the automatic lookup clutch drive sprocket axle, its key is: first flywheel and second flywheel are installed on this automatic lookup clutch drive sprocket axle side by side, wherein first flywheel is connected with automatic lookup clutch drive sprocket axle spline, the second flywheel kink is on the automatic lookup clutch drive sprocket axle, by the packing ring and the nut axial limiting of automatic lookup clutch drive sprocket axle outer end; Butt end at described first, second flywheel is provided with tooth, driving tooth on first flywheel equates with driven tooth number on second flywheel, be 2～4, and on circumference, evenly distribute, described driving tooth and driven tooth are inserted vibration damping respectively and are put in the corresponding teeth groove, and driving and driven space of teeth is arranged; Suit adapter sleeve on described second flywheel, this adapter sleeve is connected with the second flywheel spline, and adapter sleeve is disc structure away from an end of vibration damping cover, offers the bolt via hole on this disk.
Adopt above technical scheme, first flywheel and second flywheel make up by combination of simulated engine driving wheel shaft collar and driving wheel slider disc and design, the moment of inertia of first flywheel, the moment of inertia of centroid position and the combination of engine driving wheel shaft collar, centroid position is consistent as far as possible, the moment of inertia of second flywheel, the moment of inertia of centroid position and the combination of driving wheel slider disc, centroid position is consistent as far as possible, and the adapter sleeve on second flywheel can be connected with the input shaft of dynamometer machine by shaft coupling, the operation conditions that can reflect engine like this by the present invention more truly is in order to accurate detection of engine performance.
When carrying out the engine performance detection, the power that bent axle spreads out of drives the rotation of automatic lookup clutch drive sprocket axle, first flywheel rotates with the automatic lookup clutch drive sprocket axle, because the driving tooth on first flywheel is by the driven tooth interlock on the vibration damping cover and second flywheel, the power of first flywheel passes to second flywheel after overlapping damping by vibration damping, pass to adapter sleeve by second flywheel again, import dynamometer machine into by shaft coupling at last.After the motion of bent axle is taken turns moving equilibrium and vibration damping cover bumper and absorbing shock through round trip flight, not only rotating speed becomes steady, and vibration is also effectively reduced, substantially the true operation conditions that is equal to engine, motion stably is transported to dynamometer machine, can accurately detect on the one hand performance parameters such as the power of engine under different operating modes (rotating speed) condition, moment of torsion, oil consumption and whether reach the design request for utilization, prevented effectively that on the other hand engine crankshaft or clutch coupling drive sprocket axle and dynamometer machine are damaged, ensured carrying out smoothly of experiment.
For simplified structure, be convenient to processing, and the moment of inertia and the centroid position of simulated engine driving wheel shaft collar combination as far as possible truly, one end of above-mentioned first flywheel is provided with rectangle (can be other shape) driving tooth, the root of each driving tooth links to each other with the card of roundel, the other end of first flywheel is provided with big disk, the diameter of described big disk is greater than the diameter of roundel, between the two by the transition of undergauge section.
For the ease of in assembling and locate during transmission, be set with overcoat in the outside of the above-mentioned first flywheel driving tooth, this overcoat is fixed with the roundel welding, and both equal diameters.
For simplified structure, be convenient to processing, and the moment of inertia and the centroid position of simulated engine driving wheel slider disc combination as far as possible truly, above-mentioned second flywheel is made up of matrix, big disk and driven tooth, wherein matrix is the straight connector structure, the excircle of matrix is provided with spline, described big disk is positioned at the end of matrix, the root of driven tooth links to each other with the card of big disk, driven tooth and matrix separation are in the both sides of big disk, and the diameter of driven tooth place circumference is less than the diameter of big disk, but greater than the external diameter of matrix.
The center pit of the above-mentioned second flywheel matrix is the two-part step, and the reduced diameter section of center pit connects the card to big disk, and described packing ring and nut all are positioned at the enlarged diameter section of matrix center pit.Above structure can guarantee that nut utilizes the screw thread that carries on the automatic lookup clutch drive sprocket axle to assemble, and need not change the structure of automatic lookup clutch drive sprocket axle like this, has further ensured the authenticity of simulated engine operation conditions.
Processing for convenience, and help first, second flywheel connection, above-mentioned vibration damping cover is rubber parts, and kink is offered teeth groove on the outer wall of vibration damping cover on the automatic lookup clutch drive sprocket axle, and each teeth groove is axial arranged groove.
Beneficial effect: the present invention is by the structure of combination of simulated engine driving wheel shaft collar and the combination of driving wheel slider disc, make the operation conditions that can truly reflect engine when carrying out engine performance measuring, accurately detect the performance parameter of engine under different operating modes (rotating speed) condition, prevented that effectively engine crankshaft or clutch coupling drive sprocket axle and dynamometer machine are damaged, ensured and tested and to carry out smoothly, all be suitable for for large and small emission infinite variable speed engine.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the C-C cut-open view of Fig. 1.
Fig. 3 is the structural representation of first flywheel among the present invention.
Fig. 4 is the A-A cut-open view of Fig. 3.
Fig. 5 is the structural representation of second flywheel among the present invention.
Fig. 6 is the B-B cut-open view of Fig. 5.
Fig. 7 is the structural representation of vibration damping cover among the present invention.
Fig. 8 is the vertical view of Fig. 7.
Fig. 9 is a user mode reference diagram of the present invention.
Figure 10 is the structural representation of stepless variable engine.
Embodiment
The invention will be further described below in conjunction with drawings and Examples:
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the present invention is made of parts such as automatic lookup clutch drive sprocket axle 1, first flywheel 2, second flywheel 3, packing ring 4, nut 5, vibration damping cover 6 and adapter sleeves 7, wherein automatic lookup clutch drive sprocket axle 1 is a prior art, and its structure is not done at this and given unnecessary details.Described first flywheel 2 is by the machine work moulding, and the center pit of this first flywheel 2 is the two-part step, is processed with female spline at the reduced diameter section of center pit.End at first flywheel 2 is processed with 2～4 rectangles (can be other shape) driving tooth 2a, each driving tooth 2a evenly distributes on circumference, and the root of each driving tooth 2a links to each other with the card of roundel 2c, the other end of first flywheel 2 is processed with big disk 2b, the diameter of this big disk 2b passes through the transition of undergauge section greater than the diameter of roundel 2c between big disk 2b and the roundel 2c.In the present embodiment, the number of driving tooth 2a is 4, is set with overcoat 8 in the outside of each driving tooth 2a, and this overcoat 8 is fixing with roundel 2c welding, and both equal diameters.
As Fig. 1, Fig. 2, Fig. 5 and shown in Figure 6, second flywheel 3 is also by the machine work moulding, by matrix 3b, big disk 3c and driven tooth 3a form, wherein matrix 3b is the straight connector structure, on the excircle of matrix 3b, be processed with male splines, described big disk 3c is positioned at the end of matrix 3b, the card of big disk 3c is provided with 2～4 rectangles (can be other shape) driven tooth 3a, the number of driven tooth 3a equates with driving tooth 2a, in the present embodiment be 4, the size of driven tooth 3a equates with driving tooth 2a substantially, each driven tooth 3a evenly distributes on circumference, driven tooth 3a and matrix 3b separation is in the both sides of big disk 3c, and the diameter of driven tooth 3a place circumference is less than the diameter of big disk 3c, but greater than the external diameter of matrix 3b.The center pit of described matrix 3b is the two-part step, and the reduced diameter section of center pit connects to the card of big disk 3c.
As Fig. 1, Fig. 2, Fig. 7 and shown in Figure 8, vibration damping cover 6 is a rubber parts, by injection mo(u)lding, on the outer wall of vibration damping cover 6, offer teeth groove 6a, the number of teeth groove 6a is the twice of driving tooth 2a number, is 8 in the present embodiment, and each teeth groove 6a is axial arranged groove, and on circumference, evenly distribute, shape size and driving tooth 2a and the driven tooth 3a of teeth groove 6a adapt.
As shown in Figure 1 and Figure 2, the present invention is assembling like this: first flywheel 2 and second flywheel 3 are sleeved on the automatic lookup clutch drive sprocket axle 1 side by side, wherein first flywheel 2 is connected with automatic lookup clutch drive sprocket axle 1 spline, second flywheel, 3 kinks are on automatic lookup clutch drive sprocket axle 1, by the packing ring 4 and nut 5 axial limitings of automatic lookup clutch drive sprocket axle 1 outer end suit, described packing ring 4 and nut 5 all are positioned at the enlarged diameter section of the second flywheel matrix 3b center pit.Driving tooth 2a on first flywheel 2 is by the driven tooth 3a interlock on vibration damping cover 6 and second flywheel 3, be that driving tooth 2a and driven tooth 3a insert respectively among the teeth groove 6a corresponding on the vibration damping cover 6, and driving and driven tooth 2a, 3a arrange at interval, and vibration damping overlaps 6 kinks on automatic lookup clutch drive sprocket axle 1.Also be set with adapter sleeve 7 on described second flywheel 3, this adapter sleeve 7 is connected with second flywheel, 3 splines, and adapter sleeve 7 is disc structure away from an end of vibration damping cover 6, offers a plurality of bolt via hole 7a on this disk, and each bolt via hole 7a evenly distributes on circumference.
As Fig. 1, Fig. 2, Fig. 9 and in conjunction with shown in Figure 10, first flywheel 2 and second flywheel 3 design by combination 12 of simulated engine driving wheel shaft collar and driving wheel slider disc combination 13, the moment of inertia of first flywheel 2, centroid position are consistent as far as possible with moment of inertia, the centroid position of engine driving wheel shaft collar combination 12, and the moment of inertia of second flywheel 3, centroid position and driving wheel slider disc make up 13 moment of inertia, centroid position and try one's best consistent.Bolt passes the bolt via hole 7a of second flywheel, 13 upper joint sleeves 7 and an end of shaft coupling 18, with being fixed together of adapter sleeve 7 and shaft coupling 18, the other end of shaft coupling 18 is connected with the input shaft of dynamometer machine 19, the operation conditions that can reflect engine like this by the present invention more truly is in order to accurate detection of engine performance.
When carrying out the engine performance detection, the power that bent axle 9 spreads out of drives 1 rotation of automatic lookup clutch drive sprocket axle, first flywheel 2 rotates with automatic lookup clutch drive sprocket axle 1, because the driving tooth 2a on first flywheel 2 is by the driven tooth 3a interlock on vibration damping cover 6 and second flywheel 3, the power of first flywheel 2 passes to second flywheel 3 after overlapping 6 dampings by vibration damping, pass to adapter sleeve 7 by second flywheel 3 again, import dynamometer machine 19 into by shaft coupling 18 at last.After motion first, second flywheel 2,3 moving equilibriums of process of bent axle 9 and vibration damping overlap 6 bumper and absorbing shocks, not only rotating speed becomes steady, and vibration is also effectively reduced, substantially the true operation conditions that is equal to engine, motion stably is transported to dynamometer machine 19, can accurately detect on the one hand performance parameters such as the power of engine under different operating modes (rotating speed) condition, moment of torsion, oil consumption and whether reach the design request for utilization, prevented effectively that on the other hand engine crankshaft or clutch coupling drive sprocket axle and dynamometer machine are damaged, ensured carrying out smoothly of experiment.
Although below in conjunction with the accompanying drawings the preferred embodiments of the present invention are described; but the invention is not restricted to above-mentioned embodiment; above-mentioned embodiment only is schematic rather than determinate; those of ordinary skill in the art is under enlightenment of the present invention; under the prerequisite of aim of the present invention and claim; can make multiple similar expression; as change the master; the number of driven tooth and shape; perhaps replace the automatic lookup clutch drive sprocket axle with bent axle; directly carry out performance test on bent axle, such conversion all falls within protection scope of the present invention.
Claims (4)
1. electrodeless variable-speed engine performance measuring system, comprise automatic lookup clutch drive sprocket axle (1), it is characterized in that: first flywheel (2) and second flywheel (3) are installed on this automatic lookup clutch drive sprocket axle (1) side by side, wherein first flywheel (2) is connected with automatic lookup clutch drive sprocket axle (1) spline, second flywheel (3) kink is on automatic lookup clutch drive sprocket axle (1), by the packing ring (4) and nut (5) axial limiting of automatic lookup clutch drive sprocket axle (1) outer end; An end that docks with second flywheel (3) at described first flywheel (2) is provided with roundel (2c) and 2～4 equally distributed driving tooths (2a) on circumference, the other end at first flywheel (2) is provided with first disk (2b), described driving tooth (2a) is a rectangle, the root of each driving tooth (2a) links to each other with the card of roundel (2c), driving tooth (2a) and the both sides of first disk (2b) separation at roundel (2c), the diameter of described first disk (2b) is greater than the diameter of roundel (2c), between the two by the transition of undergauge section; Described second flywheel (3) is by matrix (3b), second largest disk (3c) and driven tooth (3a) are formed, wherein matrix (3b) is the straight connector structure, the excircle of matrix (3b) is provided with spline, described second largest disk (3c) is positioned at the end of matrix (3b), described follower gear (3a) evenly distributes on circumference, number equates with driving tooth (2a), the root of driven tooth (3a) links to each other with the card of second largest disk (3c), driven tooth (3a) and matrix (3b) separation are in the both sides of second largest disk (3c), and the diameter of driven tooth (3a) place circumference is less than the diameter of second largest disk (3c), but greater than the external diameter of matrix (3b); Described driving tooth (2a) and driven tooth (3a) are inserted vibration damping cover (6) respectively and are gone up in the corresponding teeth groove (6a), and driving and driven tooth (2a, 3a) is arranged at interval; Go up suit adapter sleeve (7) at described second flywheel (3), this adapter sleeve (7) is connected with second flywheel (3) spline, and adapter sleeve (7) is disc structure away from an end of vibration damping cover (6), offers bolt via hole (7a) on this disk.
2. a kind of electrodeless variable-speed engine performance measuring system according to claim 1, it is characterized in that: be set with overcoat (8) in the outside of the described first flywheel driving tooth (2a), this overcoat (8) is fixing with roundel (2c) welding, and both equal diameters.
3. a kind of electrodeless variable-speed engine performance measuring system according to claim 1, it is characterized in that: the center pit of the described second flywheel matrix (3b) is the two-part step, the reduced diameter section of center pit connects the card to second largest disk (3c), and described packing ring (4) and nut (5) all are positioned at the enlarged diameter section of matrix (3b) center pit.
4. a kind of electrodeless variable-speed engine performance measuring system according to claim 1, it is characterized in that: described vibration damping cover (6) is a rubber parts, kink is on automatic lookup clutch drive sprocket axle (1), offer teeth groove (6a) on the outer wall of vibration damping cover (6), each teeth groove (6a) is axial arranged groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100697246A CN101281094B (en) | 2008-05-22 | 2008-05-22 | Stepless speed changing engine performance measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100697246A CN101281094B (en) | 2008-05-22 | 2008-05-22 | Stepless speed changing engine performance measuring system |
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| Publication Number | Publication Date |
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| CN101281094A CN101281094A (en) | 2008-10-08 |
| CN101281094B true CN101281094B (en) | 2010-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100697246A Expired - Fee Related CN101281094B (en) | 2008-05-22 | 2008-05-22 | Stepless speed changing engine performance measuring system |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103389210B (en) * | 2013-07-08 | 2016-12-28 | 潍柴动力股份有限公司 | Elastomer damping property detection method |
| CN113567139B (en) * | 2021-08-06 | 2024-02-23 | 中检西部检测有限公司 | Gasoline chain saw engine test system and use method thereof |
| CN114486076B (en) * | 2022-04-14 | 2022-06-17 | 西华大学 | Special test mechanism for dynamic balance of engine crankshaft of hydrogen energy hybrid commercial vehicle |
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2008
- 2008-05-22 CN CN2008100697246A patent/CN101281094B/en not_active Expired - Fee Related
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| DE19947377A1 (en) * | 1999-10-01 | 2001-04-12 | Man Nutzfahrzeuge Ag | Torque measurement unit for car engine uses displacement of flywheel masses gives c continuous measurement including negative torques |
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| CN201047433Y (en) * | 2007-05-25 | 2008-04-16 | 力帆实业(集团)股份有限公司 | Driven shaft gear wheel for infinite variable speed engine speed characteristic experiment |
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