CN210440522U - Dual-mass flywheel with nonlinear torsional characteristics and adaptable to various automotive operating conditions - Google Patents
Dual-mass flywheel with nonlinear torsional characteristics and adaptable to various automotive operating conditions Download PDFInfo
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- CN210440522U CN210440522U CN201921209495.3U CN201921209495U CN210440522U CN 210440522 U CN210440522 U CN 210440522U CN 201921209495 U CN201921209495 U CN 201921209495U CN 210440522 U CN210440522 U CN 210440522U
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- flywheel
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- shock absorber
- spring
- damping spring
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Abstract
一种具有非线性扭转特性且适应汽车多工况的双质量飞轮，包括同轴设置的第一飞轮和第二飞轮，第一飞轮和第二飞轮之间设置减震器，第一飞轮和第二飞轮相对转动；第一飞轮与花键轴套通过第三铆钉连接，花键轴套与发动机的输出轴连接，连接盘与第二飞轮通过第二铆钉连接，第二飞轮与变速箱的输入轴固定连接。本实用新型使用本双质量飞轮可获得随扭转角增加而转矩特性非线性增大的连续变刚度特性，以此来实现汽车在发动机点火、怠速、正常行驶等多工况的扭转隔振。
A dual-mass flywheel with nonlinear torsional characteristics and adapting to multiple working conditions of an automobile, comprising a first flywheel and a second flywheel that are coaxially arranged, a shock absorber is arranged between the first flywheel and the second flywheel, and the first flywheel and the second flywheel are provided. The two flywheels rotate relative to each other; the first flywheel and the spline bushing are connected by a third rivet, the spline bushing is connected with the output shaft of the engine, the connecting disc and the second flywheel are connected by a second rivet, and the input of the second flywheel and the gearbox is connected The shaft is fixedly connected. The utility model uses the dual-mass flywheel to obtain the continuous variable stiffness characteristic that the torque characteristic increases nonlinearly with the increase of the torsion angle, so as to realize the torsional vibration isolation of the automobile in multiple working conditions such as engine ignition, idle speed, and normal driving.
Description
Technical Field
The utility model relates to an automotive transmission power assembly field especially relates to dual mass flywheel between car engine and the clutch gearbox.
Background
The dual-mass flywheel is used for reducing the torsion vibration of a transmission system caused by the rotation imbalance of an automobile engine at present, and particularly can completely filter out the imbalance of the engine in a low-speed region. The shock absorption under the idle working condition can be realized, and the NVH performance of the whole vehicle is improved.
The problem of vibration during the ignition phase of the engine is of further concern due to the current trend toward lighter engines and the need for frequent spark-overs in the engine. However, the existing dual-mass flywheel cannot realize the shock absorption of the automobile under multiple working conditions, particularly the shock absorption in the ignition stage of the engine.
Disclosure of Invention
The utility model aims at solving the torsional vibration isolation problem of the automobile in the engine ignition, idling, normal driving and other multi-working conditions. The dual-mass flywheel has the nonlinear torsion characteristic and is suitable for multiple working conditions of the automobile.
A dual-mass flywheel with nonlinear torsion characteristics and suitable for multiple working conditions of an automobile comprises a first flywheel and a second flywheel which are coaxially arranged, a shock absorber is arranged between the first flywheel and the second flywheel, and the first flywheel and the second flywheel rotate relatively; the first flywheel is connected with the spline shaft sleeve through a third rivet, the spline shaft sleeve is connected with an output shaft of the engine, the connecting disc is connected with the second flywheel through a second rivet, and the second flywheel is fixedly connected with an input shaft of the gearbox.
The shock absorber comprises a spring seat, a high-rigidity shock absorption spring, a top column sliding block and a low-rigidity shock absorption spring; the first flywheel is connected with the pressure plate through a first rivet, a shock absorber accommodating cavity is formed between the first flywheel and the pressure plate, the spring seat is arranged in the shock absorber accommodating cavity, the spring seat is located between a convex block on one side of the shock absorber accommodating cavity and the large-rigidity shock absorption spring, the spring seat can slide along the groove slide way, two single-side ejection column sliding blocks are arranged in the shock absorber accommodating cavity, the two ejection column sliding blocks are respectively located at two ends of the small-rigidity shock absorption spring, the two ejection column sliding blocks can slide along the ejection column sliding grooves in the groove slide way, one end of each single-side large-rigidity shock absorption spring is pressed on the spring seat, the other end of each single-side large-rigidity shock absorption spring is pressed on the ejection column sliding.
The utility model discloses a working process:
the torque transmitted to the first flywheel by the output shaft of the engine compresses the high-rigidity damping spring through the spring seat.
Because the small-rigidity damping spring is in a compressed state, the large-rigidity damping spring acts at the moment, the small-rigidity damping spring fails, and the whole shock absorber has large rigidity;
along with the increase of the input torque, the relative rotation angle of the first flywheel and the second flywheel is increased, when the elastic force of the large-stiffness vibration reduction spring is equal to that of the small-stiffness vibration reduction spring, the small-stiffness vibration reduction spring also starts to act, all the springs are connected in series, and at the moment, the vibration reducer has small stiffness;
when the two top column sliding blocks are contacted, the small-rigidity vibration reduction spring fails again, only the large-rigidity vibration reduction spring acts, and the vibration reducer has large rigidity.
Such stiffness changes meet the requirements of first large stiffness to small stiffness and then large stiffness required from engine ignition to normal driving conditions, and the general stiffness changes are shown in the figure. Therefore, torsional vibration isolation of the automobile under multiple working conditions is realized.
The utility model has the advantages that:
the dual-mass flywheel can obtain the continuous variable stiffness characteristic of which the torque characteristic nonlinearly increases along with the increase of the torsion angle, thereby realizing the torsion vibration isolation of the automobile under multiple working conditions such as engine ignition, idling, normal running and the like.
Drawings
FIG. 1 is a schematic diagram of dual mass flywheel torque characteristics.
Fig. 2 is the structure diagram of the utility model after the pressure plate is removed.
Fig. 3 is the structure diagram of the utility model after the pressure plate and the spring are removed.
Fig. 4 is a three-dimensional explosion diagram of the present invention.
Fig. 5 is a front view of the present invention.
Fig. 6 is a sectional view of a-a in fig. 5.
Detailed Description
As shown in fig. 4, 5 and 6, a dual mass flywheel having a nonlinear torsion characteristic and adapted to multiple working conditions of an automobile includes a first flywheel 7 and a second flywheel 4 coaxially disposed, a damper 6 is disposed between the first flywheel 7 and the second flywheel 4, and the first flywheel 7 and the second flywheel 4 rotate relatively; the first flywheel 7 is connected with the spline shaft sleeve 8 through a third rivet 9, the spline shaft sleeve 8 is connected with an output shaft of an engine, the connecting disc 5 is connected with the second flywheel 4 through a second rivet 3, and the second flywheel 4 is fixedly connected with an input shaft of a gearbox.
As shown in fig. 2 and 3, the shock absorber 6 includes a spring seat 61, a large-stiffness damping spring 62, a top column slide block 63 and a small-stiffness damping spring 64; the first flywheel 7 is connected with the pressure plate 2 through the first rivet 1, a shock absorber accommodating cavity is formed between the first flywheel 7 and the pressure plate 2, the spring seat 61 is arranged in the shock absorber accommodating cavity, the spring seat 61 is located between a convex block on one side of the shock absorber accommodating cavity and the large-rigidity shock absorption spring 62, the spring seat 61 can slide along a groove slide way, two single-side ejection column sliding blocks 63 are arranged in the shock absorber accommodating cavity, the two ejection column sliding blocks 63 are respectively located at two ends of the small-rigidity shock absorption spring 64, the two ejection column sliding blocks 63 can slide along an ejection column sliding groove 71 in the groove slide way, one end of each single-side two large-rigidity shock absorption springs 62 is pressed on the spring seat 61, the other end of each single-side two large-rigidity shock absorption springs are pressed on the ejection column sliding blocks 63.
The working process of the embodiment:
the torque transmitted from the output shaft of the engine to the first flywheel 7 compresses the high-rate damper spring 62 via the spring seat 61.
Because the small-stiffness damping spring 64 is in a compressed state, the large-stiffness damping spring 62 acts at the moment, the small-stiffness damping spring 64 fails, and the whole shock absorber 6 has large stiffness;
as the input torque increases, the relative rotation angle of the first flywheel 7 and the second flywheel 4 increases, and when the elastic force of the large-stiffness damping spring 62 is equal to that of the small-stiffness damping spring 64, the small-stiffness damping spring 64 also starts to act, and the springs are connected in series, so that the damper 6 has small stiffness;
when the two jack-post sliders 4 are in contact, the small-stiffness damper spring 64 fails again, only the large-stiffness damper spring 62 acts, and the damper 6 has large stiffness again.
Such stiffness changes satisfy the requirements of first large stiffness to small stiffness and then large stiffness required from engine ignition to normal driving conditions, and the general stiffness change is shown in fig. 1. Therefore, torsional vibration isolation of the automobile under multiple working conditions is realized.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921209495.3U CN210440522U (en) | 2019-07-30 | 2019-07-30 | Dual-mass flywheel with nonlinear torsional characteristics and adaptable to various automotive operating conditions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921209495.3U CN210440522U (en) | 2019-07-30 | 2019-07-30 | Dual-mass flywheel with nonlinear torsional characteristics and adaptable to various automotive operating conditions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210440522U true CN210440522U (en) | 2020-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921209495.3U Expired - Fee Related CN210440522U (en) | 2019-07-30 | 2019-07-30 | Dual-mass flywheel with nonlinear torsional characteristics and adaptable to various automotive operating conditions |
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| Country | Link |
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| CN (1) | CN210440522U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110273976A (en) * | 2019-07-30 | 2019-09-24 | 吉林大学 | Double mass flywheel with nonlinear torsion characteristic and adaptation automobile multi-state |
| CN112112929A (en) * | 2020-09-22 | 2020-12-22 | 华域动力总成部件系统(上海)有限公司 | Torsional shock absorber with straight and curved springs |
-
2019
- 2019-07-30 CN CN201921209495.3U patent/CN210440522U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110273976A (en) * | 2019-07-30 | 2019-09-24 | 吉林大学 | Double mass flywheel with nonlinear torsion characteristic and adaptation automobile multi-state |
| CN112112929A (en) * | 2020-09-22 | 2020-12-22 | 华域动力总成部件系统(上海)有限公司 | Torsional shock absorber with straight and curved springs |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200501 |