CN104791088B - A kind of motor head drive system - Google Patents
A kind of motor head drive system Download PDFInfo
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- CN104791088B CN104791088B CN201510140742.9A CN201510140742A CN104791088B CN 104791088 B CN104791088 B CN 104791088B CN 201510140742 A CN201510140742 A CN 201510140742A CN 104791088 B CN104791088 B CN 104791088B
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- flywheel
- balance weight
- crankshaft
- secondary mass
- preliminary quality
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Abstract
The present invention relates to a kind of motor head drive systems, include bent axle, crankshaft vibration damping belt pulley, timing drive sprocket, Oil pump drive gear, crankshaft rotation speed signal panel and flywheel；The flywheel is double mass flywheel, includes preliminary quality flywheel and secondary mass flywheel；It is provided with shock-absorbing spring between the preliminary quality flywheel and the secondary mass flywheel；The thickness of the preliminary quality flywheel is different from the thickness of secondary mass flywheel.It can be relatively rotated by a certain angle between preliminary quality flywheel and secondary mass flywheel, using shock-absorbing spring, the twisting vibration that engine passes to transmission system can be effectively reduced, reduce vibration noise, hence it is evident that improve the NVH performances of vehicle.
Description
Technical field
The invention belongs to technical field of engines, in particular to a kind of motor head drive systems.
Background technology
Motor head drive system, that is, crankshaft-flywheel component, mainly by bent axle, flywheel, crankshaft vibration damping belt pulley, bent axle
Rotating speed signal disc and the part and accessory of some different roles composition.Its major function is connection piston rod part, living
The reciprocating motion of plug is changed into the rotary motion of bent axle, to convert chemical energy into kinetic energy, is output to the transmission system of automobile.
Flywheel has the function of storage and discharges kinetic energy, to improve the uniformity of engine operating, while transferring torque to vehicle transmission
System is the actuator of clutch.
Existing diesel crankshaft-flywheel component usually has a flywheel, bent axle, crankshaft vibration damping belt pulley, crankshaft rotation speed signal panel,
Oil pump drive gear, timing drive sprocket, balance shaft driving wheel.Wherein flywheel be freewheel, an as rigid disc,
Without damping effect.
Crankshaft rotation speed signal panel is mounted on crankshaft front end or is integrated on flywheel；Driving wheel hot jacket is formed in crankshaft front end
Interference fit or at least one driving wheel integrally forge or are cast in crankshaft front end.
The shortcomings that existing diesel crankshaft-flywheel component is the reciprocating motion of engine and the sequentially fired song brought of cylinder
Axis irregularly rotates, and what the intrinsic frequency that power drive system has again can generate engine irregular is converted into torsion
Vibration.Since freewheel is a rigid disc, the twisting vibration generated when engine can work is directly delivered to transmission
System, causes the vibration and noise of vehicle body.It is especially used for the high torque high-speed diesel engine of passenger car, is especially apparent.
And crankshaft front end is integrally formed driving wheel, then increases the difficulty of processing of bent axle, interference hot jacket then increases the difficulty of assembly
Degree, and both methods is all unfavorable for repair demolition.Crankshaft front end arranges balance shaft driving wheel, can increase axial length of crank shaft,
Assembly is complicated.
Invention content
The object of the present invention is to provide a kind of improved technology schemes of motor head drive system, by this technology side
Case can effectively reduce the twisting vibration that engine is transmitted to transmission system, improve the NVH performances of vehicle.
The present invention is achieved by the following technical solutions：
A kind of motor head drive system includes bent axle, crankshaft vibration damping belt pulley, timing drive sprocket, lubricating oil pump
Drive gear, crankshaft rotation speed signal panel and flywheel；
The bent axle includes crankshaft body and the balance weight with the crankshaft body integrally connected；
The Oil pump drive gear, the timing drive sprocket and crankshaft vibration damping belt pulley sequence are installed on described
One end of crankshaft body；
The crankshaft rotation speed signal panel is assembled on the balance weight far from described Oil pump drive gear one end；It is described
Flywheel is installed to and crankshaft body one end similar in the crankshaft rotation speed signal panel；
The flywheel is double mass flywheel, includes preliminary quality flywheel and secondary mass flywheel；In the preliminary quality
It is provided with shock-absorbing spring between flywheel and the secondary mass flywheel；The preliminary quality flywheel be set to the crankshaft body and
Between the secondary mass flywheel, the preliminary quality flywheel is fixed on the crankshaft body；
The thickness of the preliminary quality flywheel is different from the thickness of secondary mass flywheel；The preliminary quality flywheel
Hardness is different from the hardness of secondary mass flywheel.
The balance weight is eight, respectively the first balance weight, the second balance weight, third balance weight, the 4th balance weight, the
Five balance weights, the 6th balance weight, the 7th balance weight, the 8th balance weight；First balance weight and the Oil pump drive gear
It is close；The crankshaft rotation speed signal panel is assembled on the 8th balance weight.
Set angle can be relatively rotated between the preliminary quality flywheel and the secondary mass flywheel.
The set angle more than 0 degree between being less than 30 degree.
The thickness of the preliminary quality flywheel is less than the thickness of the secondary mass flywheel.
The hardness of the preliminary quality flywheel is more than the hardness of the secondary mass flywheel.
The shock-absorbing spring at least two, and be arranged symmetrically with the center line of the crankshaft body.
One end of the crankshaft body is provided with ring flange, the flywheel is set on the ring flange.
It is provided with avoid holes on the secondary mass flywheel；Bolt of flywheel passes through the avoid holes by the preliminary quality
Flywheel is rigidly secured on the ring flange.
The bolt of flywheel is interior blossom type bolt.
The beneficial effects of the invention are as follows：
1, motor head drive system uses double mass flywheel, double mass flywheel to divide preliminary quality flywheel and secondary mass
Flywheel two parts have shock-absorbing spring structure, one can be relatively rotated between preliminary quality flywheel and secondary mass flywheel between the two
Determine angle, using shock-absorbing spring, the twisting vibration that engine passes to transmission system can be effectively reduced, reduce vibration noise, hence it is evident that
Improve the NVH performances of vehicle；For the high-speed diesel engine of high torque, when matching passenger car, double mass flywheel structure is particularly necessary.
2, the bolt of flywheel of motor head drive system is interior blossom type, can be reduced on secondary mass flywheel in this way
Bolt avoids bore dia, ensures the intensity of secondary mass flywheel.
3, the front end of the bent axle only has crankshaft vibration damping belt pulley, timing drive sprocket, Oil pump drive gear, structure letter
It is single, reduce the axial length of crankshaft body；And be clearance fit, it is positioned by flat key, produces, is easy to install and use.
4, the crankshaft rotation speed signal panel is mounted on the 8th balance weight of bent axle, is convenient for sensor reading signal.
Description of the drawings
Fig. 1 is inventive engine front-end driven system decomposition schematic diagram；
Fig. 2 is the structural schematic diagram of flywheel of the present invention；
Fig. 3 is inventive engine front-end driven system structure diagram.
Reference sign
1 crankshaft vibration damping belt pulley, 2 timing drive sprockets, 3 Oil pump drive gears, 4 bent axles, 5 crankshaft rotation speed signal panels, 6
Flywheel, 7 bolt of flywheel, 8 screws, 9 first flat keys, 10 second flat keys, 11 bolt assemblies, 12 preliminary quality flywheels, 13 vibration damping bullets
Spring, 14 secondary mass flywheels, 15 avoid holes, 41 crankshaft bodies, 42 first balance weights, 43 second balance weights, 44 third balance weights,
45 the 4th balance weights, 46 the 5th balance weights, 47 the 6th balance weights, 48 the 7th balance weights, 49 the 8th balance weights, 50 ring flanges.
Specific implementation mode
The technical solution that the present invention will be described in detail by the following examples, embodiment below are merely exemplary, are only capable of
For explanation and illustration technical scheme of the present invention, and it is not to be construed as the limitation to technical solution of the present invention.
A kind of motor head drive system of present invention offer is as shown in Figure 1 to Figure 3, includes bent axle 4, bent axle vibration damping skin
Belt wheel 1, timing drive sprocket 2, Oil pump drive gear 3, crankshaft rotation speed signal panel 5 and flywheel 6；
The bent axle 4 includes crankshaft body 41 and the balance weight with 41 integrally connected of the crankshaft body；
The Oil pump drive gear 3, the timing drive sprocket 2 and 1 sequence of the crankshaft vibration damping belt pulley are installed on
One end of the crankshaft body 41；
The crankshaft rotation speed signal panel 5 is assembled on the balance weight far from 3 one end of the Oil pump drive gear；Institute
Flywheel 6 is stated to be installed to and 41 one end of crankshaft body similar in the crankshaft rotation speed signal panel 5；
The flywheel 6 is double mass flywheel, includes preliminary quality flywheel 12 and secondary mass flywheel 14；In the primary
It is provided with shock-absorbing spring 13 between mass flywheel 12 and the secondary mass flywheel 13；The preliminary quality flywheel 12 is set to institute
It states between crankshaft body 41 and the secondary mass flywheel 14, the preliminary quality flywheel 12 is fixed on the crankshaft body 41
On；
The thickness of the preliminary quality flywheel 12 is less than the thickness of the secondary mass flywheel 14, referred to herein as preliminary quality
The thickness of flywheel body is less than the thickness of secondary mass flywheel body, and signified thickness is the axis with crankshaft body in this application
To the thickness in direction.In this application, the thickness of preliminary quality flywheel is 0.8-0.99 times of thickness of secondary mass flywheel.
Set angle can be relatively rotated between the preliminary quality flywheel 12 and the secondary mass flywheel 14.
The set angle more than 0 degree between being less than 30 degree.
The hardness of the preliminary quality flywheel 12 is more than the hardness of the secondary mass flywheel 14；In this application, primary
The difference of the hardness of mass flywheel 12 and the hardness of secondary mass flywheel 14 is between 1-10HRC (Rockwell hardness unit).
The shock-absorbing spring 13 at least two, and be arranged symmetrically with the center line of the crankshaft body 41.
The application is by the thickness by the thickness of preliminary quality flywheel 12 less than secondary mass flywheel 14, in this way, engine
When being worked, generated vibration can be allocated on preliminary quality flywheel 14, because the thickness of archiplasm mass flywheel omits
It is small, it is relatively smaller to reducing the oscillation intensity in unit volume, it can be with the axis of preliminary quality flywheel but have partial vibration power
Shock-absorbing spring is passed to direction, while having the power of part can be along the tangential direction of preliminary quality flywheel, the tangential direction power meeting
It is applied to the rotary force of secondary mass flywheel, improves the angular speed of one-piece flywheel, and then improve dynamic balance performance.It passes to and subtracts
Shake spring partial vibration power by the effectiveness in vibration suppression of shock-absorbing spring 13, the vibration by decrease passes to secondary mass flywheel again
When 14, oscillation intensity is significantly weakened.Meanwhile the hard of secondary mass flywheel 14 is more than using the hardness of preliminary quality flywheel 12
Degree is realized and is less than secondary mass flywheel 14 to the absorbability of vibration to the absorbability of vibration in preliminary quality flywheel 12, carries
High tangential component improves effectiveness in vibration suppression according to law of conservation of energy.
The crankshaft vibration damping belt pulley 1, timing drive sprocket 2, Oil pump drive gear 3 from being sequentially arranged at hair inward outside
On the front end axis of motivation crankshaft body 41；Timing drive sprocket 2 and Oil pump drive gear 3 are positioned by the first flat key 9, bent axle
Damper pulley 1 is positioned by the second flat key 10, and three is urgent by bolt assembly 11.
The balance weight is eight, respectively the first balance weight 42, the second balance weight 43, third balance weight 44, Siping City
Weigh block 45, the 5th balance weight 46, the 6th balance weight 47, the 7th balance weight 48, the 8th balance weight 49；First balance weight 42 with
The Oil pump drive gear 3 is close；The crankshaft rotation speed signal panel 5 is assembled on the 8th balance weight 49, and passes through spiral shell
It is urgent to follow closely 8.
One end of the crankshaft body 41 is provided with ring flange 50, the flywheel 6 is set on the ring flange 50.
It is provided with avoid holes 15 on the secondary mass flywheel 14；Bolt of flywheel 7 passes through the avoid holes 15 described
Preliminary quality flywheel 12 is rigidly secured on the ring flange 50.The bolt of flywheel 7 is interior blossom type bolt, can be subtracted in this way
The diameter of stove bolt avoid holes 50 ensures the intensity of secondary mass flywheel 14.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is by appended claims and its equivalent limits.
Claims (8)
1. a kind of motor head drive system includes bent axle, crankshaft vibration damping belt pulley, timing drive sprocket, lubricating oil pump drive
Moving gear, crankshaft rotation speed signal panel and flywheel；
The bent axle includes crankshaft body and the balance weight with the crankshaft body integrally connected；It is characterized in that：
The Oil pump drive gear, the timing drive sprocket and crankshaft vibration damping belt pulley sequence are installed on the bent axle
One end of ontology；
The crankshaft rotation speed signal panel is assembled on the balance weight far from described Oil pump drive gear one end；The flywheel
It is installed to and crankshaft body one end similar in the crankshaft rotation speed signal panel；
The flywheel is double mass flywheel, includes preliminary quality flywheel and secondary mass flywheel；In the preliminary quality flywheel
It is provided with shock-absorbing spring between the secondary mass flywheel；The preliminary quality flywheel is set to the crankshaft body and described
Between secondary mass flywheel, the preliminary quality flywheel is fixed on the crankshaft body；
The thickness of the preliminary quality flywheel is different from the thickness of secondary mass flywheel；The hardness of the preliminary quality flywheel
It is different from the hardness of secondary mass flywheel；
The thickness of the preliminary quality flywheel is less than the thickness of the secondary mass flywheel；
The hardness of the preliminary quality flywheel is more than the hardness of the secondary mass flywheel.
2. motor head drive system according to claim 1, it is characterised in that：The balance weight is eight, respectively
For the first balance weight, the second balance weight, third balance weight, the 4th balance weight, the 5th balance weight, the 6th balance weight, the 7th balance
Block, the 8th balance weight；First balance weight is close with the Oil pump drive gear；The crankshaft rotation speed signal panel is assembled to
On 8th balance weight.
3. motor head drive system according to claim 1, it is characterised in that：The preliminary quality flywheel with it is described
Set angle can be relatively rotated between secondary mass flywheel.
4. motor head drive system according to claim 3, it is characterised in that：The set angle is more than 0 degree
Between 30 degree.
5. motor head drive system according to claim 1, it is characterised in that：The shock-absorbing spring is at least two
It is a, and be arranged symmetrically with the center line of the crankshaft body.
6. motor head drive system according to claim 1, it is characterised in that：It is set in one end of the crankshaft body
It is equipped with ring flange, the flywheel is set on the ring flange.
7. motor head drive system according to claim 6, it is characterised in that：It is set on the secondary mass flywheel
It is equipped with avoid holes；The preliminary quality flywheel is rigidly secured on the ring flange by bolt of flywheel across the avoid holes.
8. motor head drive system according to claim 7, it is characterised in that：The bolt of flywheel is interior blossom type
Bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510140742.9A CN104791088B (en) | 2015-03-27 | 2015-03-27 | A kind of motor head drive system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510140742.9A CN104791088B (en) | 2015-03-27 | 2015-03-27 | A kind of motor head drive system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104791088A CN104791088A (en) | 2015-07-22 |
| CN104791088B true CN104791088B (en) | 2018-07-20 |
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ID=53556199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510140742.9A Active CN104791088B (en) | 2015-03-27 | 2015-03-27 | A kind of motor head drive system |
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| Country | Link |
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| CN (1) | CN104791088B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113829865B (en) * | 2020-06-24 | 2024-03-26 | 广州汽车集团股份有限公司 | Power assembly transmission system and power assembly transmission system matching method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202833596U (en) * | 2012-09-27 | 2013-03-27 | 上海爱知锻造有限公司 | Forged piece of crankshaft |
| CN103256117A (en) * | 2013-04-28 | 2013-08-21 | 重庆小康工业集团股份有限公司 | Gasoline engine with deviated crankshaft |
| CN104439364A (en) * | 2013-09-25 | 2015-03-25 | 北汽福田汽车股份有限公司 | Crankshaft assembly used for inline four-cylinder engine and forming method thereof |
-
2015
- 2015-03-27 CN CN201510140742.9A patent/CN104791088B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202833596U (en) * | 2012-09-27 | 2013-03-27 | 上海爱知锻造有限公司 | Forged piece of crankshaft |
| CN103256117A (en) * | 2013-04-28 | 2013-08-21 | 重庆小康工业集团股份有限公司 | Gasoline engine with deviated crankshaft |
| CN104439364A (en) * | 2013-09-25 | 2015-03-25 | 北汽福田汽车股份有限公司 | Crankshaft assembly used for inline four-cylinder engine and forming method thereof |
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| Publication number | Publication date |
|---|---|
| CN104791088A (en) | 2015-07-22 |
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Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Applicant after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Applicant before: Anhui Jianghuai Automotive Co., Ltd. |
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