CN108412988B - Belt transmission device for starting generator - Google Patents

Belt transmission device for starting generator Download PDF

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Publication number
CN108412988B
CN108412988B CN201810290032.8A CN201810290032A CN108412988B CN 108412988 B CN108412988 B CN 108412988B CN 201810290032 A CN201810290032 A CN 201810290032A CN 108412988 B CN108412988 B CN 108412988B
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oil
energy storage
piston
belt
way
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CN108412988A (en
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张逸
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BorgWarner Automotive Components Ningbo Co Ltd
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BorgWarner Automotive Components Ningbo Co Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H7/00Gearings for conveying rotary motion by endless flexible members
    • F16H7/08Means for varying tension of belts, ropes, or chains
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H7/00Gearings for conveying rotary motion by endless flexible members
    • F16H7/08Means for varying tension of belts, ropes, or chains
    • F16H2007/0802Actuators for final output members
    • F16H2007/0806Compression coil springs
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H7/00Gearings for conveying rotary motion by endless flexible members
    • F16H7/08Means for varying tension of belts, ropes, or chains
    • F16H2007/0802Actuators for final output members
    • F16H2007/0812Fluid pressure

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

The invention discloses a belt transmission device for starting a generator, which comprises a starting generator (1), a driving belt pulley (2) arranged on the starting generator (1), a crank belt pulley (3) arranged on a crank shaft, a driving belt (4) arranged around the driving belt pulley (2) and the crank belt pulley (3), and a belt tensioning mechanism arranged on the driving belt (4), wherein the belt tensioning mechanism comprises a first tensioning wheel (5), a second tensioning wheel (6) and a tensioner (7) which are respectively arranged outside two sections of the driving belt pulley (2) and the crank belt pulley (3) between the driving belt pulley (2) and the crank belt pulley (3), and the tensioner (7) comprises a shell (7.1), a first piston (7.2) for rotationally connecting the first tensioning wheel (5), a second piston (7.3) for rotationally connecting the second tensioning wheel (6) and an automatic adjusting oil way (7.4) arranged in the shell (7.1). The invention provides a belt transmission device of a starter generator, which can be automatically adjusted to balance the tension of transmission belts at two sides and does not need to externally supply oil pressure.

Description

Belt transmission device for starting generator
Technical Field
The invention relates to the technical field of automobile engines, in particular to a belt transmission device for a starting generator.
Background
The prior belt transmission device for starting the generator comprises a generator, a driving belt pulley arranged on a rotating shaft of the generator, a crank belt pulley arranged on a crank shaft, and a driving belt arranged around the driving belt pulley and the crank belt pulley, wherein in order to tension the driving belt, an idler pulley is arranged on one side of the driving belt, a tensioner is arranged on the other side of the driving belt, and a tensioning wheel is arranged on the tensioner; when the tension of the transmission belt is too high, the tensioner piston retreats inwards to reduce the tension of the transmission belt, so that the transmission belt is always kept in a certain tension range. However, when the tension of the transmission belt on the idler pulley side is too high, the service life of the transmission belt is affected, and when the tension is too low, the transmission belt slips to affect the transmission performance of the transmission belt
Disclosure of Invention
The technical problems to be solved by the invention are as follows: provided is a starter generator belt transmission device which can be automatically adjusted to balance the tension of transmission belts on both sides and which does not require an external supply of oil pressure.
The invention solves the problems by adopting the following technical scheme: the utility model provides a start generator belt drive device, includes the starter generator, establishes drive pulley on the starter generator, establishes the crank pulley on the bent axle, around drive pulley and crank pulley set up drive belt, set up the belt tensioning mechanism on the drive belt, belt tensioning mechanism includes first take-up pulley and second take-up pulley, the tensioning ware of two sections drive belt outsides of establishing respectively between drive pulley and crank pulley, the tensioning ware includes casing, supplies first piston that first take-up pulley rotated to connect, supplies second piston that second take-up pulley rotated to connect, establishes the automatically regulated oil circuit in the casing, the automatically regulated oil circuit is used for with the pressure conversion in the first piston retract tensioning ware become the thrust that makes the second piston stretch out the tensioning ware, or with the pressure conversion in the second piston retract tensioning ware into the thrust that makes the first piston stretch out the tensioning ware.
Compared with the prior art, the invention has the advantages that: the two sides of the driving belt are provided with tensioning wheels, and when the tensioning force of the driving belt at the first tensioning wheel side is too large and the driving belt at the second tensioning wheel side is influenced at the same time, and the tensioning force is too small, the first tensioning wheel pushes the first piston to retract into the tensioner, and then the second piston stretches out of the tensioner through an automatic adjusting oil way to push the second tensioning wheel to tension the driving belt at the second tensioning wheel side; when the tension of the transmission belt on the first tension pulley side is too small, and the transmission belt on the second tension pulley side is influenced, and the tension is too large, the second tension pulley pushes the second piston to retract into the tensioner, the first piston stretches out of the tensioner through an automatic adjusting oil way, the first tension pulley is pushed to tension the transmission belt on the first tension pulley side, and the first tension pulley and the second tension pulley are linked through the tensioner, so that the tension of the transmission belt on the two tension pulley sides is automatically adjusted and balanced.
As an improvement of the present invention, the automatically adjusting oil passage includes a first oil passage provided in the housing for movement of the first piston, a second oil passage for movement of the second piston, two communicating oil passages connecting the first oil passage and the second oil passage, a first check valve and a second check valve provided in the two communicating oil passages, respectively, the direction of the flow of the oil supplied by the first check valve being defined as one-way flow from the first oil passage to the second oil passage, the direction of the flow of the oil supplied by the second check valve being defined as one-way flow only from the second oil passage to the first oil passage, by which improvement, the oil passage provided with the first check valve is defined as one-way flow only from the first oil passage to the second oil passage, the oil passage provided with the second check valve is defined as one-way flow only from the second oil passage to the first oil passage, when the tension of the transmission belt on the first wheel side becomes large, the oil pressure of the oil in the first oil passage is pushed to retract into the tensioner, the oil passage is pushed by the first check valve to flow only one-way to the second oil passage, and the second tension of the second piston tensioner is pushed by the oil passage to extend out of the second tension belt on the second tension wheel side; when the tension of the transmission belt on the second tensioning wheel side is increased, the second piston is pushed to retract into the tensioner, the oil pressure in the second oil cavity is increased, the oil flows to the first oil cavity through the second one-way valve, and the first oil cavity pushes the first piston to extend out of the tensioner, so that the tension of the transmission belt on the first tensioning wheel side is increased.
As a further improvement of the invention, the two communicating oil ways are communicated through the pressure stabilizing oil way, the oil pressure of the two communicating oil ways is balanced through the pressure stabilizing oil way by the improvement, and the system can be adaptively adjusted through the check valve and the oil way control, so that the system is ensured to be in a tensioning state.
As an improvement of the invention, the oil is pressurized or decompressed by the oil pump in the engine, and in the prior art, the tensioner is supplied or drained by the oil pump in the engine, so the oil pump can be adopted to supply the oil to the automatic regulating oil way, so as to improve the oil pressure in the automatic regulating oil way, and the two pistons push the two tensioning wheels to tension the two sides of the transmission belt; or the oil pressure in the automatic regulating oil way is reduced, so that both pistons retract into the tensioner to reduce the tension of the transmission belt.
The automatic regulating oil way further comprises an energy storage branch, wherein the energy storage branch comprises an energy storage cavity, an energy storage piston arranged in the energy storage cavity, an energy storage oil way for connecting the energy storage cavity with the communication oil way and a control valve for controlling the on-off of the energy storage oil way and the communication oil way; when the tensioning force of the transmission belts on two sides is too small, the control valve is opened to boost the automatic adjusting oil way, oil in the energy storage cavity enters the automatic adjusting oil way to boost the pressure, so that two pistons extend out of the tensioner by a certain displacement amount, and the two tensioning wheels are pushed to tension the transmission belts.
In a further improvement of the invention, the energy storage oil path comprises a first branch and a second branch, the control valve comprises a third one-way valve arranged on the first branch and a fourth one-way valve arranged on the second branch, the third one-way valve is used for limiting that oil can only flow from the energy storage cavity to the communication oil path, the fourth one-way valve is used for limiting that oil can only flow from the communication oil path to the energy storage cavity, by the improvement, the oil outlet pressure of the third one-way valve is set, so that when the pressure of the oil outlet of the third one-way valve is too small, namely the pressure of the communication oil path is too small, the oil inlet pressure of the fourth one-way valve is set, and when the pressure of the oil inlet of the fourth one-way valve is too large, namely the pressure of the communication oil path is too large, the oil flows from the communication oil path to the energy storage cavity through the fourth one-way valve to store.
According to the invention, the first piston is elastically abutted against the first oil cavity through the first spring, the second piston is elastically abutted against the second oil cavity through the second spring, and the first spring and the second spring are elastic supports of mechanical structure type and are used for assisting oil to elastically support the two pistons.
As a further improvement of the invention, the energy storage piston is elastically propped against the energy storage cavity through the energy storage spring, and through the improvement, the energy storage spring can convert the oil pressure into the elastic potential energy of the spring for storage.
Drawings
Fig. 1 is a schematic perspective view of the whole structure of the present invention.
Fig. 2 is a schematic perspective view of the structure of the tensioner of the present invention.
FIG. 3 is a schematic view of the direction of oil flow when the tension of the drive belt at the first tensioner is too high.
FIG. 4 is a schematic view of the direction of oil flow when the tension of the drive belt at the second tensioner of the present invention is too great.
FIG. 5 is a schematic diagram of the direction of oil flow when the energy storage branch of the present invention pressurizes the oil pressure in the communication path.
Fig. 6 is a schematic diagram of the oil flow direction of the energy storage branch circuit of the present invention when the oil pressure of the communication oil circuit is released.
The device comprises a generator, a 2-driving belt pulley, a 3-crank belt pulley, a 4-driving belt, a 5-first tensioning wheel, a 6-second tensioning wheel, a 7-tensioner, a 7.1-shell, a 7.2-first piston, a 7.3-second piston, a 7.4-automatic adjusting oil way, a 7.4.1-first oil cavity, a 7.4.2-second oil cavity, a 7.4.3-communicating oil way, a 7.4.4-first check valve, a 7.4.5-second check valve, a 7.4.6-pressure stabilizing oil way, a 7.4.7-energy storage cavity, a 7.4.8-energy storage piston, a 7.4.9-first branch, a 7.4.10-second branch, a 7.4.11-third check valve, a 7.4.12-fourth check valve, a 7.4.13-energy storage spring, a 7.5-first spring and a 7.6-second spring.
Detailed Description
Embodiments of the present invention are further described below with reference to the accompanying drawings.
As shown in figures 1-2 of the drawings,
the utility model provides a start generator belt drive device, including starting generator 1, drive pulley 2 of setting on starting generator 1, set up the crank pulley 3 on the bent axle, around drive pulley 2 and crank pulley 3 set up the drive belt 4, set up the belt tensioning mechanism on drive belt 4, belt tensioning mechanism includes the first take-up pulley 5 and the second take-up pulley 6 of two sections drive belt 2 outsides respectively set up between drive pulley 2 and crank pulley 3, the tensioning ware 7, tensioning ware 7 includes casing 7.1, the first piston 7.2 that supplies first take-up pulley 5 to rotate to connect, the second piston 7.3 that supplies second take-up pulley 6 to rotate to connect, set up the automatically regulated oil circuit 7.4 in casing 7.1, automatically regulated oil circuit 7.4 is used for the pressure conversion in the first piston 7.2 withdraw tensioning ware 7 in the thrust that makes the second piston 7.3 stretch out tensioning ware 7, or the pressure conversion in the second piston 7.3 withdraw tensioning ware 7 is the thrust that makes first piston 7.2 stretch out tensioning ware 7, wherein the piston supply take-up pulley rotates to connect the first take-up pulley, supply take-up pulley to rotate to connect and indicate on take-up pulley, supply pulley to rotate to connect and take-up pulley and rotate, can produce the friction along with the axial displacement along with the drive pulley 4 when the drive pulley is produced in order to rotate with the piston and can produce with the axial displacement along with the drive pulley, and can be displaced along with the axial direction, and can be reduced.
The two pistons can be opposite and coaxial in the illustration, or can be opposite and arranged at a certain included angle.
Wherein the automatically adjusting oil path 7.4 comprises a first oil chamber 7.4.1 provided in the casing 7.1 for the first piston 7.2 to move, a second oil chamber 7.4.2 for the second piston 7.3 to move, two communicating oil paths 7.4.3 connecting the first oil chamber 7.4.1 and the second oil chamber 7.4.2, a first check valve 7.4.4 and a second check valve 7.4.5 provided on the two communicating oil paths 7.4.3 respectively, the direction of the first check valve 7.4.4 oil supply flow is defined to flow unidirectionally from the first oil chamber 7.4.1 to the second oil chamber 7.4.2, and the direction of the second check valve 7.4.5 oil supply flow is defined to flow unidirectionally from the second oil chamber 7.4.2 to the first oil chamber 7.4.1 only.
Wherein, two communicating oil ways 7.4.3 are communicated through a pressure stabilizing oil way 7.4.6.
Wherein, automatically regulated oil circuit 7.4 still includes the energy storage branch road, and the energy storage branch road includes energy storage chamber 7.4.7, establishes the energy storage piston 7.4.8 in energy storage chamber 7.4.7, connects energy storage chamber 7.4.7 and the energy storage oil circuit of intercommunication oil circuit 7.4.3, control valve of control energy storage oil circuit and intercommunication oil circuit 7.4.3 break-make.
Wherein the energy storage oil path comprises a first branch 7.4.9 and a second branch 7.4.10, the control valve comprises a third check valve 7.4.11 arranged on the first branch 7.4.9 and a fourth check valve 7.4.12 arranged on the second branch 7.4.10, the third check valve 7.4.11 is used for limiting that oil can only flow from the energy storage cavity 7.4.7 to the communication oil path 7.4.3, and the fourth check valve 7.4.12 is used for limiting that oil can only flow from the communication oil path 7.4.3 to the energy storage cavity 7.4.7.
The first piston 7.2 is elastically abutted against the first oil cavity 7.4.1 through the first spring 7.5, and the second piston 7.3 is elastically abutted against the second oil cavity 7.4.2 through the second spring 7.6.
Wherein, the energy storage piston 7.4.8 is elastically propped against the energy storage cavity 7.4.7 through the energy storage spring 7.4.13.
The arrow in fig. 3 indicates the direction of oil flow when the tension of the driving belt 4 at the first tensioning wheel 5 is too high, and when the tension of the driving belt 4 at the first tensioning wheel 5 is too high, the first piston 7.2 is pushed to retract into the shell 7.1 of the tensioner 7, the oil in the first oil cavity 7.4.1 enters the communication oil path 7.4.3 through the first one-way valve 7.4.4, then flows to the second oil cavity 7.4.2, and pushes the second piston 7.3 to push out.
The arrow in fig. 4 is the direction of oil flow when the tension of the driving belt 4 at the second tensioning wheel 6 is too large, and as shown by the arrow in the figure, when the tension of the chain 4 at the second tensioning wheel 6 is too large, the second piston 7.3 is pushed to retract into the shell 7.1 of the tensioner 7, and the oil in the second oil cavity 7.4.2 enters the communication oil path 7.4.3 through the second one-way valve 7.4.5 and then flows to the first oil cavity 7.4.1 to push the first piston 7.2 to push out.
In the prior art, the check valves arranged in the oil paths all have a certain opening threshold, the driving belt vibrates to generate thrust to the piston when in transmission, the thrust is not changed beyond the opening threshold of the check valve, and the check valve is not opened, so that tension change caused by vibration of the driving belt can be filtered, and the first check valve 7.4.4 and the second check valve 7.4.5 can also be set with certain thresholds to filter tension change caused by vibration of the driving belt.
The arrow in fig. 5 indicates the direction of oil flow when the energy storage branch of the present invention pressurizes the oil pressure in the communication oil path 7.4.3, when the oil pressure in the communication oil path 7.4.3 is too small, the oil flows from the energy storage chamber 7.4.7 to the communication oil path 7.4.3 through the third check valve 7.4.11 when the tension of the transmission belt 4 is insufficient, the third check valve 7.4.11 can be set to an open threshold, and when the oil pressure in the communication oil path 7.4.3 is less than the open threshold set by the third check valve 7.4.11, the third check valve 7.4.11 is opened, and the oil flows from the energy storage chamber 7.4.7 to the communication oil path 7.4.3 through the third check valve 7.4.11.
The arrow in fig. 6 shows the flow direction of oil when the energy storage branch circuit of the present invention releases the oil pressure in the communication oil circuit 7.4.3, when the oil pressure in the communication oil circuit 7.4.3 is too high, the oil enters the energy storage cavity 7.4.7 from the communication oil circuit 7.4.3 through the fourth check valve 7.4.12 when the tension of the transmission belt 4 is too high, the energy storage spring 7.4.13 stores energy, the fourth check valve 7.4.12 can be set to an open threshold, and when the oil pressure in the communication oil circuit 7.4.3 is greater than the open threshold, the fourth check valve 7.4.12 is opened, and the oil enters the energy storage cavity 7.4.7 from the communication oil circuit 7.4.3 through the fourth check valve 7.4.12.
The starting generator refers to a P0 starting generator, and belt transmission mechanisms such as a timing belt pulley transmission device and the like are arranged in the engine, so that the structure of the belt transmission device of the starting generator can be expanded and applied.
The foregoing is illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary. All changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims (6)

1. The utility model provides a start-up generator belt drive device, includes start-up generator (1), establishes drive pulley (2) on start-up generator (1), establishes crank pulley (3) on the bent axle, centers on drive belt (4) that drive pulley (2) and crank pulley (3) set up, set up the belt tensioning mechanism on drive belt (4), its characterized in that: the belt tensioning mechanism comprises a first tensioning wheel (5) and a second tensioning wheel (6) which are respectively arranged outside two sections of transmission belts (4) between a driving belt wheel (2) and a crank belt wheel (3), and a tensioner (7), wherein the tensioner (7) comprises a shell (7.1), a first piston (7.2) for rotationally connecting the first tensioning wheel (5), a second piston (7.3) for rotationally connecting the second tensioning wheel (6), and an automatic adjusting oil way (7.4) arranged in the shell (7.1), and the automatic adjusting oil way (7.4) is used for converting the pressure of the first piston (7.2) retracted into the tensioner (7) into the thrust for enabling the second piston (7.3) to extend out of the tensioner (7), or converting the pressure of the second piston (7.3) retracted into the thrust for enabling the first piston (7.2) to extend out of the tensioner (7);
the automatic adjusting oil way (7.4) comprises a first oil cavity (7.4.1) which is arranged in the shell (7.1) and used for moving the first piston (7.2), a second oil cavity (7.4.2) which is used for moving the second piston (7.3), two communication oil ways (7.4.3) which are used for connecting the first oil cavity (7.4.1) and the second oil cavity (7.4.2), and a first check valve (7.4.4) and a second check valve (7.4.5) which are respectively arranged on the two communication oil ways (7.4.3);
the two communication oil ways (7.4.3) are communicated through a pressure stabilizing oil way (7.4.6);
the first piston (7.2) is elastically abutted against the first oil cavity (7.4.1) through the first spring (7.5), and the second piston (7.3) is elastically abutted against the second oil cavity (7.4.2) through the second spring (7.6).
2. The starter-generator belt drive of claim 1, wherein: the first check valve (7.4.4) is defined to flow in one direction from the first oil chamber (7.4.1) to the second oil chamber (7.4.2), and the second check valve (7.4.5) is defined to flow in one direction only from the second oil chamber (7.4.2) to the first oil chamber (7.4.1).
3. The starter-generator belt drive of claim 2, wherein: and the communicating oil way (7.4.3) of the automatic regulating oil way (7.4) is used for pressurizing or depressurizing oil liquid through an engine oil pump in the engine.
4. A starter-generator belt drive as in claim 3, wherein: the automatic regulating oil way (7.4) further comprises an energy storage branch, wherein the energy storage branch comprises an energy storage cavity (7.4.7), an energy storage piston (7.4.8) arranged in the energy storage cavity (7.4.7), an energy storage oil way for connecting the energy storage cavity (7.4.7) with the communication oil way (7.4.3) and a control valve for controlling the on-off of the energy storage oil way and the communication oil way (7.4.3).
5. The starter-generator belt drive of claim 4, wherein: the energy storage oil circuit comprises a first branch circuit (7.4.9) and a second branch circuit (7.4.10), the control valve comprises a third one-way valve (7.4.11) arranged on the first branch circuit (7.4.9) and a fourth one-way valve (7.4.12) arranged on the second branch circuit (7.4.10), the third one-way valve (7.4.11) is used for limiting that oil can only flow from the energy storage cavity (7.4.7) to the communication oil circuit (7.4.3), and the fourth one-way valve (7.4.12) is used for limiting that oil can only flow from the communication oil circuit (7.4.3) to the energy storage cavity (7.4.7).
6. The starter-generator belt drive of claim 4, wherein: the energy storage piston (7.4.8) is elastically propped against the energy storage cavity (7.4.7) through an energy storage spring (7.4.13).
CN201810290032.8A 2018-04-03 2018-04-03 Belt transmission device for starting generator Active CN108412988B (en)

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Application Number Priority Date Filing Date Title
CN201810290032.8A CN108412988B (en) 2018-04-03 2018-04-03 Belt transmission device for starting generator

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Application Number Priority Date Filing Date Title
CN201810290032.8A CN108412988B (en) 2018-04-03 2018-04-03 Belt transmission device for starting generator

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CN108412988B true CN108412988B (en) 2024-03-05

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109058404B (en) * 2018-10-26 2024-01-02 伊维氏传动***(平湖)有限公司 Integrated hydraulic double-piston tensioner
CN114789872A (en) * 2022-04-15 2022-07-26 浙江机电职业技术学院 Arc-shaped turning conveying device for food packaging and transportation

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990059328A (en) * 1997-12-30 1999-07-26 정몽규 Tension Control of Timing Belt
JP2002054700A (en) * 2000-08-07 2002-02-20 Honda Motor Co Ltd Tension adjusting device for endless chain
CN101493138A (en) * 2008-01-22 2009-07-29 通用汽车环球科技运作公司 Belted alternator starter accessory drive tensioning system
CN102667243A (en) * 2009-11-03 2012-09-12 博格华纳公司 Multi-strand tensioning arrangement with moving arms
CN204664319U (en) * 2015-03-27 2015-09-23 广东技术师范学院 Hybrid power engine front end wheel train automatic tensioner
CN105179083A (en) * 2015-11-09 2015-12-23 重庆大学 Tension adjusting device for self-adaptive engine front end accessory gear train
CN208295057U (en) * 2018-04-03 2018-12-28 博格华纳汽车零部件(宁波)有限公司 Start dynamo belt transmission device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990059328A (en) * 1997-12-30 1999-07-26 정몽규 Tension Control of Timing Belt
JP2002054700A (en) * 2000-08-07 2002-02-20 Honda Motor Co Ltd Tension adjusting device for endless chain
CN101493138A (en) * 2008-01-22 2009-07-29 通用汽车环球科技运作公司 Belted alternator starter accessory drive tensioning system
CN102667243A (en) * 2009-11-03 2012-09-12 博格华纳公司 Multi-strand tensioning arrangement with moving arms
CN204664319U (en) * 2015-03-27 2015-09-23 广东技术师范学院 Hybrid power engine front end wheel train automatic tensioner
CN105179083A (en) * 2015-11-09 2015-12-23 重庆大学 Tension adjusting device for self-adaptive engine front end accessory gear train
CN208295057U (en) * 2018-04-03 2018-12-28 博格华纳汽车零部件(宁波)有限公司 Start dynamo belt transmission device

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