CN104791088A - Engine front end driving system - Google Patents
Engine front end driving system Download PDFInfo
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- CN104791088A CN104791088A CN201510140742.9A CN201510140742A CN104791088A CN 104791088 A CN104791088 A CN 104791088A CN 201510140742 A CN201510140742 A CN 201510140742A CN 104791088 A CN104791088 A CN 104791088A
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- flywheel
- equilibrium block
- crankshaft
- secondary mass
- drive system
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Abstract
The invention relates to an engine front end driving system which comprises a crank shaft, a crank shaft vibration damping belt wheel, a timing drive chain wheel, an engine oil pump driving gear, a crank shaft rotation speed signal panel and fly wheels. The fly wheels are dual mass fly wheels and include a primary-mass fly wheel and a secondary-mass fly wheel. A vibration damping spring is arranged between the primary-mass fly wheel and the secondary-mass fly wheel. The primary-mass fly wheel is different from the secondary-mass fly wheel in thickness. The primary-mass fly wheel and the secondary-mass fly wheel can perform relative rotation at a certain angle, the torsional vibration transferred from an engine to the driving system can be decreased by utilizing the vibration damping spring, vibration noise is reduced, and the NVH performance of a vehicle can be obviously improved.
Description
Technical field
The invention belongs to technical field of engines, specifically refer to a kind of motor head drive system.
Background technique
Motor head drive system and crankshaft-flywheel assembly, primarily of bent axle, flywheel, crankshaft vibration damping belt pulley, crankshaft rotation speed signal panel and some not same-action part and accessory composition.Its major function connects piston rod part, the to-and-fro motion of piston changed into the rotary motion of bent axle, thus convert chemical energy to kinetic energy, output to the transmission system of automobile.Flywheel has storage and discharges the function of kinetic energy, and improve the uniformity of engine running, transmitting torque is to car transmissions simultaneously, is the actuator of clutch.
Existing diesel crankshaft-flywheel assembly has flywheel, bent axle, crankshaft vibration damping belt pulley, crankshaft rotation speed signal panel, Oil pump drive gear usually, timing driving sprocket wheel, trunnion shaft driving wheel.Wherein flywheel is freewheel, is a rigid disc, without damping effect.
Crankshaft rotation speed signal panel is arranged on crankshaft front end or is integrated on flywheel; Driving wheel hot jacket, at crankshaft front end, forms interference fit, or has at least a driving wheel integrally forge or be cast in crankshaft front end.
The shortcoming of existing diesel crankshaft-flywheel assembly is, the to-and-fro motion of motor and the irregular rotation of the sequentially fired bent axle brought of cylinder, and the natural frequency that power transmission system has can be converted into torsional vibration the irregular rotation that motor produces again.Because freewheel is a rigid disc, the torsional vibration produced power train be can be directly delivered to during engine operation, vibration and the noise of vehicle body caused.Especially for the high torque high speed diesel engine of passenger car, especially obviously.
And crankshaft front end is integrally formed driving wheel, then increase the difficulty of processing of bent axle, interference hot jacket then increases the difficulty of assembling, and these two kinds of methods are all unfavorable for repair demolition.Crankshaft front end arranges trunnion shaft driving wheel, can increase axial length of crank shaft, and assembling is complicated.
Summary of the invention
The object of this invention is to provide a kind of improvement opportunity scheme of motor head drive system, by the technical program, effectively can reduce the torsional vibration that motor is delivered to transmission system, improve the NVH performance 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 driving sprocket wheel, Oil pump drive gear, crankshaft rotation speed signal panel and flywheel;
The equilibrium block that described bent axle includes crankshaft body and is connected with described crankshaft body one;
Described Oil pump drive gear, described timing driving sprocket wheel and described crankshaft vibration damping belt pulley order is installed on one end of described crankshaft body;
Described crankshaft rotation speed signal panel is assembled on the described equilibrium block away from described Oil pump drive gear one end; Described flywheel is installed to crankshaft body one end close with described crankshaft rotation speed signal panel;
Described flywheel is double mass flywheel, includes preliminary quality flywheel and secondary mass flywheel; Shock-absorbing spring is provided with between described preliminary quality flywheel and described secondary mass flywheel; Described preliminary quality flywheel is arranged between described crankshaft body and described secondary mass flywheel, and described preliminary quality flywheel is fixed on described crankshaft body;
The thickness of described preliminary quality flywheel is different from the thickness of described secondary mass flywheel; The hardness of described preliminary quality flywheel is different from the hardness of described secondary mass flywheel.
Described equilibrium block is eight, is respectively the first equilibrium block, the second equilibrium block, the 3rd equilibrium block, the 4th equilibrium block, the 5th equilibrium block, the 6th equilibrium block, the 7th equilibrium block, the 8th equilibrium block; Described first equilibrium block and described Oil pump drive gear close; Described crankshaft rotation speed signal panel is assembled on described 8th equilibrium block.
Set angle can be relatively rotated between described preliminary quality flywheel and described secondary mass flywheel.
Described set angle is less than between 30 degree being greater than 0 degree.
The thickness of described preliminary quality flywheel is less than the thickness of described secondary mass flywheel.
The hardness of described preliminary quality flywheel is greater than the hardness of described secondary mass flywheel.
Described shock-absorbing spring is at least two, and with the center line of described crankshaft body for being symmetrical arranged.
One end of described crankshaft body is provided with flange plate, and described flywheel is arranged on described flange plate.
Described secondary mass flywheel is provided with and dodges hole; Dodge hole described in bolt of flywheel passes described preliminary quality flywheel is rigidly secured on described flange plate.
Described bolt of flywheel is interior blossom type bolt.
The invention has the beneficial effects as follows:
1, motor head drive system uses double mass flywheel, double mass flywheel divides preliminary quality flywheel and secondary mass flywheel two-part, there is shock-absorbing spring structure between the two, several angle can be relatively rotated between preliminary quality flywheel and secondary mass flywheel, utilize shock-absorbing spring, the torsional vibration that motor passes to transmission system can be effectively reduced, reduce vibration noise, obviously improve the NVH performance of vehicle; For the high-speed diesel engine of high moment of torsion, during coupling passenger car, double mass flywheel structure is particularly necessary.
2, the bolt of flywheel of motor head drive system is interior blossom type, and bore dia dodged by the bolt that can reduce on secondary mass flywheel like this, ensures the intensity of secondary mass flywheel.
3, the front end of described bent axle only has crankshaft vibration damping belt pulley, timing driving sprocket wheel, Oil pump drive gear, and structure is simple, reduces the axial length of crankshaft body; And be Spielpassung, by flat key location, produce, easy to install and use.
4, described crankshaft rotation speed signal panel is arranged on the 8th equilibrium block of bent axle, is convenient to sensor reading signal.
Accompanying drawing explanation
Fig. 1 is motor head drive system decomposing schematic representation of the present invention;
Fig. 2 is the structural representation of flywheel of the present invention;
Fig. 3 is motor head driving system structure schematic diagram of the present invention.
Description of reference numerals
1 crankshaft vibration damping belt pulley, 2 timing driving sprocket wheels, 3 Oil pump drive gears, 4 bent axles, 5 crankshaft rotation speed signal panels, 6 flywheels, 7 bolts of flywheel, 8 screws, 9 first flat keys, 10 second flat keys, 11 bolt assemblies, 12 preliminary quality flywheels, 13 shock-absorbing springs, 14 secondary mass flywheels, 15 dodge hole, 41 crankshaft body, 42 first equilibrium blocks, 43 second equilibrium blocks, 44 the 3rd equilibrium blocks, 45 the 4th equilibrium blocks, 46 the 5th equilibrium blocks, 47 the 6th equilibrium blocks, 48 the 7th equilibrium blocks, 49 the 8th equilibrium blocks, 50 flange plate.
Embodiment
Describe technological scheme of the present invention by the following examples in detail, following embodiment is only exemplary, only can be used for explaining and technological scheme of the present invention being described, and can not be interpreted as being the restriction to technical solution of the present invention.
The invention provides a kind of motor head drive system as shown in Figure 1 to Figure 3, include bent axle 4, crankshaft vibration damping belt pulley 1, timing driving sprocket wheel 2, Oil pump drive gear 3, crankshaft rotation speed signal panel 5 and flywheel 6;
The equilibrium block that described bent axle 4 includes crankshaft body 41 and is connected with described crankshaft body 41 one;
Described Oil pump drive gear 3, described timing driving sprocket wheel 2 and described crankshaft vibration damping belt pulley 1 order is installed on one end of described crankshaft body 41;
Described crankshaft rotation speed signal panel 5 is assembled on the described equilibrium block away from described Oil pump drive gear 3 one end; Described flywheel 6 is installed to crankshaft body 41 one end close with described crankshaft rotation speed signal panel 5;
Described flywheel 6 is double mass flywheel, includes preliminary quality flywheel 12 and secondary mass flywheel 14; Shock-absorbing spring 13 is provided with between described preliminary quality flywheel 12 and described secondary mass flywheel 13; Described preliminary quality flywheel 12 is arranged between described crankshaft body 41 and described secondary mass flywheel 14, and described preliminary quality flywheel 12 is fixed on described crankshaft body 41;
The thickness of described preliminary quality flywheel 12 is less than the thickness of described secondary mass flywheel 14, refer to that the thickness of preliminary quality flywheel body is less than the thickness of secondary mass flywheel body herein, the thickness of indication is with the thickness of the axial direction of crankshaft body in this application.In this application, the thickness of preliminary quality flywheel is 0.8-0.99 times of the thickness of secondary mass flywheel.
Set angle can be relatively rotated between described preliminary quality flywheel 12 and described secondary mass flywheel 14.
Described set angle is less than between 30 degree being greater than 0 degree.
The hardness of described preliminary quality flywheel 12 is greater than the hardness of described secondary mass flywheel 14; In this application, the difference of the hardness of preliminary quality flywheel 12 and the hardness of secondary mass flywheel 14 is between 1-10HRC (Rockwell hardness unit).
Described shock-absorbing spring 13 is at least two, and with the center line of described crankshaft body 41 for being symmetrical arranged.
The application is by being less than the thickness of secondary mass flywheel 14 by the thickness of preliminary quality flywheel 12, like this, the vibration that motor produces when carrying out work can distribute on preliminary quality flywheel 14, because the thickness of archiplasm mass flywheel is smaller, relatively smaller to the ocsillator strenght reduced in per unit volume, but have partial vibration power and can pass to shock-absorbing spring with the axial direction of preliminary quality flywheel, have simultaneously part power can along the tangent direction of preliminary quality flywheel, this tangent direction power can be applied to the rotating force of secondary mass flywheel, improve the angular velocity of one-piece flywheel, and then raising dynamic balance performance.Pass to the effectiveness in vibration suppression of partial vibration power by shock-absorbing spring 13 of shock-absorbing spring, when the vibration through weakening passes to secondary mass flywheel 14 again, ocsillator strenght is significantly weakened.Simultaneously, adopt the hardness of preliminary quality flywheel 12 to be greater than the hardness of secondary mass flywheel 14, realize being less than the absorptivity of secondary mass flywheel 14 to vibration in the absorptivity of preliminary quality flywheel 12 to vibration, improve tangential component, according to law of conservation of energy, improve effectiveness in vibration suppression.
Described crankshaft vibration damping belt pulley 1, timing driving sprocket wheel 2, Oil pump drive gear 3 is from being arranged on successively inward on the front end axle of engine crankshaft body 41 outward; Timing driving sprocket wheel 2 and Oil pump drive gear 3 are located by the first flat key 9, and crankshaft vibration damping belt pulley 1 is located by the second flat key 10, and three is urgent by bolt assembly 11.
Described equilibrium block is eight, is respectively the first equilibrium block 42, second equilibrium block 43, the 3rd equilibrium block 44, the 4th equilibrium block 45, the 5th equilibrium block 46, the 6th equilibrium block 47, the 7th equilibrium block 48, the 8th equilibrium block 49; Described first equilibrium block 42 is close with described Oil pump drive gear 3; Described crankshaft rotation speed signal panel 5 is assembled on described 8th equilibrium block 49, and urgent by screw 8.
One end of described crankshaft body 41 is provided with flange plate 50, and described flywheel 6 is arranged on described flange plate 50.
Described secondary mass flywheel 14 is provided with and dodges hole 15; Dodge hole 15 described in bolt of flywheel 7 passes described preliminary quality flywheel 12 is rigidly secured on described flange plate 50.Described bolt of flywheel 7 is interior blossom type bolt, can reduce the diameter that hole 50 dodged by bolt like this, ensures the intensity of secondary mass flywheel 14.
Although illustrate and describe embodiments of the invention, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments without departing from the principles and spirit of the present invention, scope of the present invention is by claims and equivalency thereof.
Claims (10)
1. a motor head drive system, includes bent axle, crankshaft vibration damping belt pulley, timing driving sprocket wheel, Oil pump drive gear, crankshaft rotation speed signal panel and flywheel;
The equilibrium block that described bent axle includes crankshaft body and is connected with described crankshaft body one; It is characterized in that:
Described Oil pump drive gear, described timing driving sprocket wheel and described crankshaft vibration damping belt pulley order is installed on one end of described crankshaft body;
Described crankshaft rotation speed signal panel is assembled on the described equilibrium block away from described Oil pump drive gear one end; Described flywheel is installed to crankshaft body one end close with described crankshaft rotation speed signal panel;
Described flywheel is double mass flywheel, includes preliminary quality flywheel and secondary mass flywheel; Shock-absorbing spring is provided with between described preliminary quality flywheel and described secondary mass flywheel; Described preliminary quality flywheel is arranged between described crankshaft body and described secondary mass flywheel, and described preliminary quality flywheel is fixed on described crankshaft body;
The thickness of described preliminary quality flywheel is different from the thickness of described secondary mass flywheel; The hardness of described preliminary quality flywheel is different from the hardness of described secondary mass flywheel.
2. motor head drive system according to claim 1, it is characterized in that: described equilibrium block is eight, be respectively the first equilibrium block, the second equilibrium block, the 3rd equilibrium block, the 4th equilibrium block, the 5th equilibrium block, the 6th equilibrium block, the 7th equilibrium block, the 8th equilibrium block; Described first equilibrium block and described Oil pump drive gear close; Described crankshaft rotation speed signal panel is assembled on described 8th equilibrium block.
3. motor head drive system according to claim 1, is characterized in that: can relatively rotate set angle between described preliminary quality flywheel and described secondary mass flywheel.
4. motor head drive system according to claim 3, is characterized in that: described set angle is less than between 30 degree being greater than 0 degree.
5. motor head drive system according to claim 1, is characterized in that: the thickness of described preliminary quality flywheel is less than the thickness of described secondary mass flywheel.
6. motor head drive system according to claim 1, is characterized in that: the hardness of described preliminary quality flywheel is greater than the hardness of described secondary mass flywheel.
7. motor head drive system according to claim 1, is characterized in that: described shock-absorbing spring is at least two, and with the center line of described crankshaft body for being symmetrical arranged.
8. motor head drive system according to claim 1, it is characterized in that: one end of described crankshaft body is provided with flange plate, described flywheel is arranged on described flange plate.
9. motor head drive system according to claim 8, is characterized in that: be provided with on described secondary mass flywheel and dodge hole; Dodge hole described in bolt of flywheel passes described preliminary quality flywheel is rigidly secured on described flange plate.
10. motor head drive system according to claim 9, is characterized in that: described 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 true CN104791088A (en) | 2015-07-22 |
| CN104791088B CN104791088B (en) | 2018-07-20 |
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| 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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113829865A (en) * | 2020-06-24 | 2021-12-24 | 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113829865A (en) * | 2020-06-24 | 2021-12-24 | 广州汽车集团股份有限公司 | Power assembly transmission system and power assembly transmission system matching method |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104791088B (en) | 2018-07-20 |
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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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