CN111412257A - Belt tensioner, belt drive system and automobile - Google Patents
Belt tensioner, belt drive system and automobile Download PDFInfo
- Publication number
- CN111412257A CN111412257A CN201910011924.4A CN201910011924A CN111412257A CN 111412257 A CN111412257 A CN 111412257A CN 201910011924 A CN201910011924 A CN 201910011924A CN 111412257 A CN111412257 A CN 111412257A
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- CN
- China
- Prior art keywords
- belt
- rocker arm
- pulley
- tensioner
- power generation
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H7/10—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley
- F16H7/12—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley
- F16H7/1209—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley with vibration damping means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
- F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
- F02B67/06—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus driven by means of chains, belts, or like endless members
Abstract
The application discloses belt tensioner, belt drive system and car. A belt tensioner comprising: a first rocker arm that is swingable around the first hole; a second rocker arm that is swingable around the second hole; an elastic member disposed between the first rocker arm and the second rocker arm; the first smooth wheel is arranged at the free end of the first rocker arm, and the second smooth wheel is arranged at the free end of the second rocker arm; the elastic component enables the first rocker arm and the second rocker arm to swing towards opposite directions, so that the first smooth wheel and the second smooth wheel are driven to tension different belt strands of a belt driving system. The belt tensioner according to the present invention can simply and flexibly achieve tensioning of a belt drive system.
Description
Technical Field
The present invention relates to the field of automobiles, and in particular to a belt tensioner and a belt drive system and an automobile with such a belt tensioner.
Background
In order to meet increasingly severe CAFE requirements, the research and development investment on micro-mixing is increased by the traditional automobile huge at home and abroad, a wheel train at the front end of an engine is changed, and belt motor driving is realized, so that the automobile is one of the technical routes in the micro-mixing at present. Because the requirement on the vehicle space is low, the framework of the engine is not greatly changed, so that the scheme of the micro-hybrid belt motor driving system has great advantages in multiple dimensions such as technical maturity, cost, oil consumption and performance, and is greatly recommended by various traditional automobile manufacturers and component manufacturers in recent years.
The existing belt motor driving system generally adopts a double-arm tensioner or two independent tensioners, wherein the double-arm tensioner needs to be installed on a power generation and starting all-in-one machine, and the two independent tensioners have high requirements on space.
Disclosure of Invention
The invention provides a belt tensioner which can simply and flexibly tension a belt driving system.
According to one aspect of the present invention, there is provided a belt tensioner comprising:
a first rocker arm that is swingable around the first hole;
a second rocker arm that is swingable around the second hole;
an elastic member disposed between the first rocker arm and the second rocker arm; and
a first smooth wheel arranged at the free end of the first rocker arm and a second smooth wheel arranged at the free end of the second rocker arm;
the elastic component enables the first rocker arm and the second rocker arm to swing towards opposite directions, so that the first smooth wheel and the second smooth wheel are driven to tension different belt strands of a belt driving system.
According to the belt tensioner of one aspect of the present invention, the first rocker arm is mounted through the first hole, and the second rocker arm is mounted through the second hole.
According to a belt tensioner of an aspect of the present invention, a damping unit is provided in the first rocker arm and/or the second rocker arm.
According to the belt tensioner provided by one aspect of the present invention, the first rocker arm and/or the second rocker arm is L-shaped or Z-shaped.
According to the belt tensioner provided by one aspect of the present invention, a first limit feature is provided on the first rocker arm, a second limit feature is provided on the second rocker arm, and the elastic member is installed between the first limit feature and the second limit feature.
According to one aspect of the invention, a belt drive system is provided, comprising a belt tensioner as described above.
According to the belt driving system provided by one aspect of the invention, the belt driving system further comprises a crankshaft belt pulley, an air compressor belt pulley and a power generation and starting all-in-one belt pulley.
According to one aspect of the present invention, there is provided a belt drive system, wherein the first and second sheaves of the belt tensioner are used to tension any two of the following belt strands: the power generation starting all-in-one machine comprises a belt strand between the crankshaft belt pulley and the air compressor belt pulley, a belt strand between the crankshaft belt pulley and the power generation starting all-in-one machine belt pulley and a belt strand between the air compressor belt pulley and the power generation starting all-in-one machine belt pulley.
According to the belt driving system provided by one aspect of the invention, a vibration isolation unit is arranged in the crankshaft pulley and/or the power generation and starting all-in-one pulley.
The invention further relates to a motor vehicle having such a belt tensioner. Since the vehicle is provided with the belt tensioner according to the present invention, it is possible to have advantages as described above.
The beneficial effects of the invention include: through the elastic part arranged between the first rocker arm and the second rocker arm, the first smooth wheel and the second smooth wheel can tension different belt strands of the belt driving system, and meanwhile, the belt tensioner is compact in structure and flexible in arrangement.
Drawings
The disclosure of the present invention is illustrated with reference to the accompanying drawings. It is to be understood that the drawings are designed solely for the purposes of illustration and not as a definition of the limits of the invention. In the drawings, like reference numerals are used to refer to like parts unless otherwise specified. Wherein:
fig. 1 schematically shows a belt drive system according to one embodiment of the present invention;
fig. 2 schematically shows a proposed belt tensioner according to an embodiment of the invention.
Detailed Description
It is easily understood that according to the technical solution of the present invention, a person skilled in the art can propose various alternative structures and implementation ways without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical aspects of the present invention, and should not be construed as all of the present invention or as limitations or limitations on the technical aspects of the present invention.
In the following description, various parameters and components are described for different configurations of embodiments, and these specific parameters and components are only by way of example and do not limit the embodiments of the present application.
According to one embodiment of the invention, a belt tensioner comprises a first rocker arm capable of swinging around a first hole, a second rocker arm capable of swinging around a second hole, an elastic member arranged between the first rocker arm and the second rocker arm, a first idler arranged at a free end of the first rocker arm, and a second idler arranged at a free end of the second rocker arm, wherein the elastic member enables the first rocker arm and the second rocker arm to swing towards opposite directions so as to drive the first idler and the second idler to tension different belt strands of a belt drive system.
According to one embodiment of the present invention, a belt drive system comprises the above-described belt tensioner. The belt driving system further comprises a crankshaft belt pulley, an air compressor belt pulley and a power generation starting all-in-one machine belt pulley. The first and second sheaves in the belt tensioner are for tensioning any two of the following belt strands: the power generation starting all-in-one machine comprises a belt strand between the crankshaft belt pulley and the air compressor belt pulley, a belt strand between the crankshaft belt pulley and the power generation starting all-in-one machine belt pulley and a belt strand between the air compressor belt pulley and the power generation starting all-in-one machine belt pulley. And a vibration isolation unit is arranged in the crankshaft pulley and/or the power generation and starting all-in-one pulley.
A belt drive system according to an embodiment of the present invention is explained in conjunction with fig. 1 and 2.
Fig. 1 is a schematic structural diagram of a belt driving system, which includes: the device comprises a crankshaft belt pulley 1 connected with a crankshaft, a belt 2, an air compressor belt pulley 3, a belt tensioner (S-type tensioner) 4, a power generation starting all-in-one belt pulley 5, and a crankshaft belt pulley, an air compressor belt pulley and the S-type tensioner which are connected. According to the clockwise direction, the order of belt connection is crankshaft pulley, S type take-up pulley left side smooth wheel, electricity generation start-up all-in-one belt pulley, S type take-up pulley right side smooth wheel, compressor belt pulley in proper order. The belt drive system is applicable to a hybrid vehicle.
The compressor belt pulley is a part of a compressor, an external control variable displacement compressor or a scroll compressor is usually adopted, and the compressor is a core part of an automobile air-conditioning refrigeration system. The belt pulley of the power generation and starting all-in-one machine is a component of the power generation and starting all-in-one machine and is in contact with a belt to transmit or be transmitted with torque. The belt is typically a 6-ribbed or 7-ribbed high modulus cord belt.
The S-shaped tensioner comprises two L type or Z type rocker arms, the two L type or Z type rocker arms are connected through a linear spring mechanism, the linear spring mechanism is used for providing spring force, the other end of the L type or Z type rocker arm is connected with a plastic or steel aureola respectively, the position of the aureola is arranged between a power generation starting all-in-one belt pulley and a crankshaft belt pulley and between the power generation starting all-in-one belt pulley and a compressor belt pulley respectively, the L type or Z type rocker arm is provided with two damping mechanisms respectively, the damping mechanisms are used for providing damping and reducing the swing amplitude of the tensioner in the motion process, and the L type or Z type rocker arm is provided with a mounting hole characteristic used for mounting the S-shaped tensioner through bolts.
Specifically, in one embodiment, the crank pulley 1 is internally provided with a damping unit, so that the influence of the crankshaft speed fluctuation on the gear train can be effectively reduced from the crankshaft end, and the damping unit is not additionally arranged in the power generation and starting all-in-one pulley 5. In another embodiment, the pulley 5 of the power generation and starting all-in-one machine is internally provided with a damping unit, so that the influence of the rotation speed fluctuation of the crankshaft on the performance of the gear train system is reduced from the end of the power generation and starting all-in-one machine. The pulley groove of the crank pulley 1 is preferably 7 grooves.
As shown in figure 1, the pulley groove of the compressor pulley and the pulley groove of the power generation starting all-in-one machine need to be consistent with the pulley groove of the crankshaft pulley in number, the compressor pulley 3 is connected with the compressor, and the pulley 5 of the power generation starting all-in-one machine is connected with the power generation starting all-in-one machine. The belt 2 connects the crankshaft pulley 1, the air compressor pulley 3, the S-shaped tensioner 4 and the power generation and starting integrated machine 5 together. The positions of the air compressor belt pulley 3 and the power generation starting all-in-one machine belt pulley 5 directly determine the installation positions of the air compressor and the power generation starting all-in-one machine on an engine and the whole vehicle.
Illustratively, a plane coordinate system is established by taking the center of the crankshaft pulley as the center of a circle, the direction of the vehicle head as an X axis and the vertical direction as a Y axis. The central coordinates of the crankshaft pulley are (0,0), the central coordinates of the air compressor pulley are (220 +/-0.5, -45 +/-0.5), the central coordinates of the power generation and starting all-in-one pulley are (250 +/-0.5, 300 +/-0.5), the central coordinates of the bolt hole of the left arm of the S-shaped tensioner are (128 +/-0.5,190 +/-0.5), and the central coordinates of the bolt hole of the right arm of the S-shaped tensioner are (274 +/-0.5,115.6 +/-0.5). The belt wrap angle formed from a tangent point corresponding to the belt wrapping belt pulley to the center of the belt pulley is 180-185 degrees, the belt wrap angle of the air compressor belt pulley is 100-105 degrees, the belt wrap angle of the power generation starting all-in-one machine belt pulley is 150-155 degrees, and the belt wrap angle of the S-shaped tensioner smooth wheel is 25-30 degrees. The diameter of the crank pulley across the ball is 169.7-170.3 mm, the diameter of the air compressor pulley across the ball is 111.6-112.2 mm, and the diameter of the power generation and starting all-in-one pulley across the ball is 59.7-60.3 mm. The diameters of the two smooth wheels on the S-shaped tensioner are 59.7-60.3 mm. The belt strand span length can not be less than 75 mm at the shortest and can not exceed 300 mm at the longest.
In addition to the spatial arrangement, the system needs a robust system tension, the system tension is mainly provided by an S-type tensioner 4, specifically, as shown in fig. 2, the S-type tensioner 4 comprises a smooth wheel 6 and a smooth wheel 14, the smooth wheel 6 presses a belt span between the crankshaft pulley 1 and the power generation starting all-in-one pulley 5 to keep a certain tension and avoid belt slip, the smooth wheel 14 presses a belt between the air compressor pulley 3 and the power generation starting all-in-one pulley 5 to keep a certain tension and avoid belt slip, the smooth wheel 6 is connected with the rocker arm 7, the smooth wheel 14 is connected with the rocker arm 12, the rocker arm 7 and the rocker arm 12 can be designed into L type or Z type shapes, and the like, depending on the starting spatial arrangement and the vehicle arrangement, a hole 8 on the rocker arm 7 and a hole 13 on the rocker arm 12 are installation holes of an S-type bracket, and a damping feature can be designed inside to avoid excessive swing of the rocker arm 7 and the rocker arm 12, spring limiting features 9 and 11 need to be designed on the rocker arm 7 and the rocker arm 12, and the limiting features 9 are connected through.
The S-shaped tensioner can flexibly arrange a fixed point of the S-shaped tensioner according to the space requirement of the engine, and is not required to be arranged on the power generation and starting all-in-one machine, so that the first-order installation mode of the power generation and starting all-in-one machine is effectively improved. The belt driving system can be matched with engines with different displacement, is particularly suitable for engine architectures with 1.5T and above, is particularly suitable for four-cylinder engines with larger displacement, fully exerts the advantage of reducing oil consumption, meets the requirements of national regulations on oil consumption, provides enough power for vehicles and meets the expectations of customers on driving performance. The belt driving system can provide stable system performance for a belt motor starting system by flexibly arranging the S-shaped tensioner and matching with the damping unit.
The belt driving system can effectively change the span length of the belt strand, reduce the vibration of the belt strand and simultaneously improve the first-order installation mode of the power generation and starting all-in-one machine by flexibly arranging the S-shaped tensioner, and is more suitable for engines with medium and large discharge capacities; with an arrangement of fewer idlers, the cost of the system is reduced while providing robust system performance.
An exemplary operation of the belt drive system is as follows:
during cold start and under the electricity generation mode, the bent axle drives bent axle belt pulley 1, bent axle belt pulley 1 is the action wheel, clockwise rotation, bent axle belt pulley 1 drives belt 2, belt 2 drives compressor belt pulley 3, belt 2 drives smooth wheel 14 in the S type tensioning ware 4, S type tensioning ware 4 passes through spring 10 drive rocking arm 14, and then drive smooth wheel 14 and provide tension for the belt between air compressor machine belt pulley 3 and the electricity generation start-up all-in-one belt pulley 5, belt 2 drives electricity generation start-up all-in-one belt pulley 5, S type tensioning ware 4 passes through spring 10 drive rocking arm 7, and then drive smooth wheel 6 and provide tension for the belt between bent axle belt pulley 1 and the electricity generation start-up all-in-one belt pulley 5, the belt between bent axle belt pulley 1 and the electricity generation.
Under the belt start mode, electricity generation starts all-in-one belt pulley 5 and is the action wheel, and clockwise rotation drives belt 2, and belt 2 drives S type tensioning ware 5' S smooth wheel 6, and S type tensioning ware 5 promotes rocking arm 7 through spring 10, and then promotes smooth wheel 6 and compresses tightly the belt strand between crankshaft pulley 1 and the electricity generation start all-in-one 5, and belt 2 and then drive crankshaft pulley 1, and crankshaft pulley 1 drives the bent axle work and then accomplishes the oil spout ignition function of engine. The belt between the crankshaft pulley 1 and the air compressor pulley 3 is relatively loose-edged.
In the boosting mode, the belt pulley 5 of the power generation starting all-in-one machine and the crankshaft belt pulley 1 are driving wheels, and drive the belt 2 and the compressor belt pulley 3 to work. The belt between the crankshaft pulley 1 and the air compressor pulley 3 is relatively loose-edged.
In the braking energy recovery mode, when the rotating speed of the engine is lower than 1000RPM, the braking energy is not recovered, and the braking mechanical energy of the engine is converted into electric energy according to a control strategy during braking.
The invention also includes a motor vehicle having a belt tensioner according to any one or more of the embodiments described above, which therefore has the technical features and technical effects corresponding to those described above and which are therefore not described in detail here.
The technical scope of the present invention is not limited to the above description, and those skilled in the art can make various changes and modifications to the above-described embodiments without departing from the technical spirit of the present invention, and such changes and modifications should fall within the protective scope of the present invention.
Claims (10)
1. A belt tensioner, characterized in that the belt tensioner comprises:
a first rocker arm that is swingable around the first hole;
a second rocker arm that is swingable around the second hole;
an elastic member disposed between the first rocker arm and the second rocker arm; and
a first smooth wheel arranged at the free end of the first rocker arm and a second smooth wheel arranged at the free end of the second rocker arm;
the elastic component enables the first rocker arm and the second rocker arm to swing towards opposite directions, so that the first smooth wheel and the second smooth wheel are driven to tension different belt strands of a belt driving system.
2. The belt tensioner as in claim 1, wherein the first rocker arm is mounted through the first aperture and the second rocker arm is mounted through the second aperture.
3. The belt tensioner as in claim 1, wherein a damping unit is provided in the first rocker arm and/or the second rocker arm.
4. The belt tensioner as in claim 1, wherein the first rocker arm and/or the second rocker arm is L-shaped or Z-shaped.
5. The belt tensioner as in claim 1, wherein a first stop feature is provided on the first rocker arm and a second stop feature is provided on the second rocker arm, the elastic member being mounted between the first stop feature and the second stop feature.
6. A belt drive system, characterized in that it incorporates a belt tensioner according to any one of claims 1 to 5.
7. The belt drive system as in claim 6, further comprising a crankshaft pulley, an air compressor pulley, and a power generation start all-in-one pulley.
8. The belt drive system as in claim 7, wherein the first and second sheaves in the belt tensioner are used to tension any two of the following belt strands: the power generation starting all-in-one machine comprises a belt strand between the crankshaft belt pulley and the air compressor belt pulley, a belt strand between the crankshaft belt pulley and the power generation starting all-in-one machine belt pulley and a belt strand between the air compressor belt pulley and the power generation starting all-in-one machine belt pulley.
9. A belt drive system as claimed in claim 6, wherein a vibration isolation unit is provided in the crank pulley and/or the power generation starting all-in-one pulley.
10. An automobile, characterized in that it comprises a belt tensioner according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910011924.4A CN111412257A (en) | 2019-01-07 | 2019-01-07 | Belt tensioner, belt drive system and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910011924.4A CN111412257A (en) | 2019-01-07 | 2019-01-07 | Belt tensioner, belt drive system and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111412257A true CN111412257A (en) | 2020-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910011924.4A Pending CN111412257A (en) | 2019-01-07 | 2019-01-07 | Belt tensioner, belt drive system and automobile |
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| Country | Link |
|---|---|
| CN (1) | CN111412257A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864378A (en) * | 2016-04-07 | 2016-08-17 | 宁波丰茂远东橡胶有限公司 | Belt tensioning equipment of hybrid electric vehicle |
| CN106122400A (en) * | 2016-08-29 | 2016-11-16 | 莱顿汽车部件（苏州）有限公司 | A kind of Dual directional tightener being applied to BSG train and automobile engine system |
| CN108397288A (en) * | 2018-02-27 | 2018-08-14 | 上汽通用汽车有限公司 | A kind of dynamo belt motor driven systems and driving method |
| CN108533400A (en) * | 2018-03-21 | 2018-09-14 | 上汽通用汽车有限公司 | Accessory drive system and automobile containing it |
-
2019
- 2019-01-07 CN CN201910011924.4A patent/CN111412257A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864378A (en) * | 2016-04-07 | 2016-08-17 | 宁波丰茂远东橡胶有限公司 | Belt tensioning equipment of hybrid electric vehicle |
| CN106122400A (en) * | 2016-08-29 | 2016-11-16 | 莱顿汽车部件（苏州）有限公司 | A kind of Dual directional tightener being applied to BSG train and automobile engine system |
| CN108397288A (en) * | 2018-02-27 | 2018-08-14 | 上汽通用汽车有限公司 | A kind of dynamo belt motor driven systems and driving method |
| CN108533400A (en) * | 2018-03-21 | 2018-09-14 | 上汽通用汽车有限公司 | Accessory drive system and automobile containing it |
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Application publication date: 20200714 |
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