WO2018106201A1 - Viscous torsional damper crankshaft pulley - Google Patents

Viscous torsional damper crankshaft pulley Download PDF

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Publication number
WO2018106201A1
WO2018106201A1 PCT/TR2017/050005 TR2017050005W WO2018106201A1 WO 2018106201 A1 WO2018106201 A1 WO 2018106201A1 TR 2017050005 W TR2017050005 W TR 2017050005W WO 2018106201 A1 WO2018106201 A1 WO 2018106201A1
Authority
WO
WIPO (PCT)
Prior art keywords
pulley
balancing mass
outer cap
groove
order
Prior art date
Application number
PCT/TR2017/050005
Other languages
French (fr)
Inventor
Ali Yavuz KUTUK
Mustafa TINKIR
Original Assignee
Kentpar Otomotiv Ve Makina Sanayi Ticaret Ltd. Sti.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kentpar Otomotiv Ve Makina Sanayi Ticaret Ltd. Sti. filed Critical Kentpar Otomotiv Ve Makina Sanayi Ticaret Ltd. Sti.
Publication of WO2018106201A1 publication Critical patent/WO2018106201A1/en

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Classifications

    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/14—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers
    • F16F15/1407—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers the rotation being limited with respect to the driving means
    • F16F15/1414—Masses driven by elastic elements
    • F16F15/1435—Elastomeric springs, i.e. made of plastic or rubber
    • F16F15/1442—Elastomeric springs, i.e. made of plastic or rubber with a single mass
    • 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
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32—Friction members
    • F16H55/36—Pulleys
    • 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
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32—Friction members
    • F16H55/36—Pulleys
    • F16H2055/366—Pulleys with means providing resilience or vibration damping

Definitions

  • the invention is about viscous (sticky) torsional (torsion) damper (dampener) crankshaft pulley which transmits the motion and power taken from crankshaft to other engine components by damping rotational and torsional vibrations occur on crankshaft of internal-combustion engines has high torque.
  • crankshaft pulleys The main purpose of crankshaft pulleys is transmitting the rotational motion and torque to other engine components from crankshaft with minimum losses and damping rotational and torsional vibrations occur during transmission effectively. Therefore in previous technic, there are three different versions of damper crankshaft pulleys such as; vibration, torsional (torsion) and viscous (sticky). An invention does not exist which has the technical features of torsional vibration damper pulley and viscous vibration damper pulley together. In order to decreasing the cost and space, it is needed to combine the previous techniques in a new invention. Besides, in the previous technique about torsional damper crankshaft pulleys, there is no study to decrease the high heat that occurs on rubber. This situation decreases the lifetime of rubber.
  • the invention is about viscous torsional damper crankshaft pulley damping rotational and torsional vibrations and has cooling system.
  • high viscous liquid (oil) is filled between the balancing mass and the viscous liquid receptacle.
  • the aim of the invention is reducing the torsional vibrations via rubber part, to damp rotational vibrations via high viscous liquid and motion of balancing mass, and increasing life time of the rubber via cooling system.
  • FIG. 1 Section View of Viscous Torsional Damper Pulley
  • the invention is about viscous torsional damper crankshaft pulley damping rotational and torsional vibrations on crankshaft of high torque internal- combustion engines and has cooling system.
  • the invention is a new product that has the features of both torsional vibration damper crankshaft pulley and viscous vibration damper crankshaft pulley which are in the previous technique.
  • the liquid that has high viscosity will be filled homogeneously into housing (14) and performs bearing between the balancing mass (1 1 ) and the housing (14) which viscous liquid is filled in.
  • Balancing mass (1 1 ) of which surface is under effect of viscous liquid is designed as being able to turn into the receptacle that the viscous liquid is filled in (14).
  • Kinetic energy that arises from mass inertia effect that pulley is exposed during immediate acceleration, and rotational vibration that occurs as a consequence of that, is damped via balancing mass (1 1 ) which moves well balanced in housing (14) that viscous liquid is filled.
  • balancing mass which moves independently decreases the over energy and provides a damp effect during immediate acceleration or immediate stops.
  • balancing mass (1 1 ) is designed as an "L" shape which will increase the contact surface of viscous liquid during action in viscous liquid filled housing (14) that the balancing mass (1 1 ) is placed in.
  • Balancing mass (1 1 ) is designed with the same shape of viscous liquid filled housing (14) and placed in viscous liquid filled housing (14).
  • rubber part (4) which is placed between pulley groove (1 ) and hub (6) will damp the torsional vibrations on crankshaft.
  • rubber part (4) that damps the torsional vibrations which arises when the pulley is exposed high torque and rotation, turns the total energy arises the pulley into heat and provides a damp via that way.
  • propeller (7) is placed between rubber part (4) and inner cap (9).
  • cooling holes (15) are added on outer cap (12). In that way, the needed cooling system is characterized via propeller (7) and air holes (15).
  • Belt grooves (1 .1 ) and belt groove guide (1 .2) which are characterized with this component provides a better clutch for the belt on the pulley. By that, prevents the pulley to turn freely in the belt or to lose power via skipping revs.
  • Belt groove guide (1 .2) prevents the belt that placed on pulley to move forward and back, and keeps stable.
  • grooves on pulley groove There are two types of grooves on pulley groove. These are; 4 grooves, and 6 grooves of types. The only variable between those groove types is groove wideness type.
  • the form of groove types placing a belt grooves (1 .1 ) which is one groove quantity missing then the stated groove quantity in groove type between two belt groove guide (1 .2), and completing the one missing grooves (1 .1 ) quantity as placing two half grooves on belt groove guides (1 .2).
  • Bush (2) is placed between pulley groove (1 ) and inner cap (9); provides a balanced movement for pulley groove (1 ) and inner cap (9) during immediate torque and rotation changes.
  • Sub bearing support (3) is placed between pulley groove (1 ) and inner cap (9); provides damping to axial weight on these parts.
  • Rubber part (4) is placed between pulley groove (1 ) and hub (6); provides damping to torsional vibrations which arises from torque difference between the torque from crankshaft and the torque from the belt which is on pulley groove (1 ) causes on hub (6).
  • Sub corner bearing support (5) is placed between balancing mass (1 1 ) and inner cap (9) corners, has 90 degrees twist, and prevents these components touching each other.
  • Hub (6) turns the torque from crankshaft into turning movement via the hub shaft attached to it.
  • Propeller (7) ejects the heat energy which arises on rubber part (4) (by transferring) out via cooling holes that are placed on outer cap (12).
  • Hub shaft is attached to hub (6) and directs the torque from crankshaft to other components of the engine.
  • Outer cap (12); is combined with inner cap (9) and has a design of having at least 1 quantity of cooling hole (15) on it. That combining is made as from outer diameter of inner cap (9) and inner diameter of outer cap (12).
  • Pin nest (13); is placed as at least 1 quantity on outer cap (12); provides high viscous liquid being filled into housing (14) that the viscous liquid is filled in, and ultimately closed with a pin.
  • Pin is placed and fixed into pin nest (13) with a groove mass that exists in pin nest (13); the stated pin nest (13) has a round shape.
  • the viscous liquid filled housing (14); high viscous liquid is filled in it, a volume that is formed between balancing mass (1 1 ), inner cap (9) and outer cap (12).

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Pulleys (AREA)

Abstract

The invention; is about viscous (sticky) torsional (torsion) damper (dampener) crankshaft pulley which transmits the motion and power taken from crankshaft to other engine components by damping rotational and torsional vibrations occur on crankshaft of internal-combustion engines has high torque.

Description

VISCOUS TORSIONAL DAMPER CRANKSHAFT PULLEY
DESCRIPTION
TECHNICAL FIELD
The invention; is about viscous (sticky) torsional (torsion) damper (dampener) crankshaft pulley which transmits the motion and power taken from crankshaft to other engine components by damping rotational and torsional vibrations occur on crankshaft of internal-combustion engines has high torque.
PREVIOUS TECHNIQUE
The main purpose of crankshaft pulleys is transmitting the rotational motion and torque to other engine components from crankshaft with minimum losses and damping rotational and torsional vibrations occur during transmission effectively. Therefore in previous technic, there are three different versions of damper crankshaft pulleys such as; vibration, torsional (torsion) and viscous (sticky). An invention does not exist which has the technical features of torsional vibration damper pulley and viscous vibration damper pulley together. In order to decreasing the cost and space, it is needed to combine the previous techniques in a new invention. Besides, in the previous technique about torsional damper crankshaft pulleys, there is no study to decrease the high heat that occurs on rubber. This situation decreases the lifetime of rubber.
As a result of the preliminary research, there is no invention about this type of design which is damping rotational and torsional vibrations; containing both rubber, balancing mass, and viscous oil receptacle; has no cooling system decreases heat and at the same time cooling rubber while running, is found. Thus, the invention is separated from the previous technique damper crankshaft pulleys by qualification.
BRIEF DESCRIPTION OF THE INVENTION
The invention is about viscous torsional damper crankshaft pulley damping rotational and torsional vibrations and has cooling system. In the invention; high viscous liquid (oil) is filled between the balancing mass and the viscous liquid receptacle. The aim of the invention is reducing the torsional vibrations via rubber part, to damp rotational vibrations via high viscous liquid and motion of balancing mass, and increasing life time of the rubber via cooling system.
MEANINGS OF FIGURES
Figure 1 . Section View of Viscous Torsional Damper Pulley
Figure 2. Isometric Section View of Viscous Torsional Damper Pulley Figure 3. Isometric Front Side View of Viscous Torsional Damper
Pulley
Figure 4. Isometric Back Side View of Viscous Torsional Damper
Pulley
Figure 5. Section View of Rubber Part
Figure 6. Section View of Balancing Mass
Figure 7. Section View of Propeller
Figure 8. Section View A
The correspondence of the part numbers indicated in the figures are given below.
1 . Pulley Groove
1 .1 . Belt Grooves
1 .2. Belt Groove Guide
2. Bush
3. Sub Bearing Support
4. Rubber Part
5. Sub Corner Bearing Support
6. Hub
7. Propeller
8. Hub Shaft
9. Inner Cap
10. Upper Corner Bearing Support 1 1 . Balancing Mass
12. Outer Cap
13. Pin Hole
14. Viscous Liquid Filled Housing
15. Cooling Hole
DETAILED DESCRIPTION OF INVENTION
The invention; is about viscous torsional damper crankshaft pulley damping rotational and torsional vibrations on crankshaft of high torque internal- combustion engines and has cooling system. The invention is a new product that has the features of both torsional vibration damper crankshaft pulley and viscous vibration damper crankshaft pulley which are in the previous technique.
Instead of using torsional vibration damper crankshaft pulley and viscous damper crankshaft pulley in order to damping rotational and torsional vibrations; damping rotational and torsional vibrations together is possible via one crankshaft pulley by this invention. In the invention inner cap (9) and outer cap (12) combined together by their contact surfaces. While that combining process, balancing mass (1 1 ), sub corner bearing support (5) and upper corner bearing support (10) components are placed between inner cap (9) and outer cap (12). After combining process the system becomes one part and the housing (14) which viscous liquid will be filled in is formed. The liquid that has high viscosity will be filled homogeneously into housing (14) and performs bearing between the balancing mass (1 1 ) and the housing (14) which viscous liquid is filled in. Balancing mass (1 1 ) of which surface is under effect of viscous liquid is designed as being able to turn into the receptacle that the viscous liquid is filled in (14). Kinetic energy that arises from mass inertia effect that pulley is exposed during immediate acceleration, and rotational vibration that occurs as a consequence of that, is damped via balancing mass (1 1 ) which moves well balanced in housing (14) that viscous liquid is filled. In other words, balancing mass which moves independently decreases the over energy and provides a damp effect during immediate acceleration or immediate stops. Thus, balancing mass (1 1 ) is designed as an "L" shape which will increase the contact surface of viscous liquid during action in viscous liquid filled housing (14) that the balancing mass (1 1 ) is placed in. Balancing mass (1 1 ) is designed with the same shape of viscous liquid filled housing (14) and placed in viscous liquid filled housing (14).
Another feature of the invention; rubber part (4) which is placed between pulley groove (1 ) and hub (6) will damp the torsional vibrations on crankshaft. In the invention; rubber part (4), that damps the torsional vibrations which arises when the pulley is exposed high torque and rotation, turns the total energy arises the pulley into heat and provides a damp via that way. Thus, a cooling system is needed on the invention to decrease the heat that arises on the rubber (4), and to increase the life time of rubber part (4). Therefore, propeller (7) is placed between rubber part (4) and inner cap (9). Besides, cooling holes (15) are added on outer cap (12). In that way, the needed cooling system is characterized via propeller (7) and air holes (15).
The heat that occurs on rubber part (4) while the movement of the pulley, is ejected out via propeller (7) and cooling holes (15). The components and their duties are listed as; pulley groove (1 ); is the component that rubber make is placed between it and hub (6), directs the movement which comes from crankshaft to other engine components via a belt which is placed on its grooves. Belt grooves (1 .1 ) and belt groove guide (1 .2) which are characterized with this component provides a better clutch for the belt on the pulley. By that, prevents the pulley to turn freely in the belt or to lose power via skipping revs. Belt groove guide (1 .2) prevents the belt that placed on pulley to move forward and back, and keeps stable. There are two types of grooves on pulley groove. These are; 4 grooves, and 6 grooves of types. The only variable between those groove types is groove wideness type. The form of groove types; placing a belt grooves (1 .1 ) which is one groove quantity missing then the stated groove quantity in groove type between two belt groove guide (1 .2), and completing the one missing grooves (1 .1 ) quantity as placing two half grooves on belt groove guides (1 .2). Bush (2); is placed between pulley groove (1 ) and inner cap (9); provides a balanced movement for pulley groove (1 ) and inner cap (9) during immediate torque and rotation changes. Sub bearing support (3) is placed between pulley groove (1 ) and inner cap (9); provides damping to axial weight on these parts. Rubber part (4) is placed between pulley groove (1 ) and hub (6); provides damping to torsional vibrations which arises from torque difference between the torque from crankshaft and the torque from the belt which is on pulley groove (1 ) causes on hub (6). Sub corner bearing support (5); is placed between balancing mass (1 1 ) and inner cap (9) corners, has 90 degrees twist, and prevents these components touching each other. Hub (6); turns the torque from crankshaft into turning movement via the hub shaft attached to it. Propeller (7); ejects the heat energy which arises on rubber part (4) (by transferring) out via cooling holes that are placed on outer cap (12). Hub shaft; is attached to hub (6) and directs the torque from crankshaft to other components of the engine. Inner cap (9); the component that is combined with outer cap from the touch point (welded), forms the housing (14) that high viscous liquid is filled in, and provides balancing mass (1 1 ) turning capability in its shape, and it is designed according to the shape of balancing mass (1 1 ). Upper corner bearing support (10); alike sub corner bearing support (5), prevents balancing mass (1 1 ) to move towards outer cap (12) and inner diameter. Outer cap (12); is combined with inner cap (9) and has a design of having at least 1 quantity of cooling hole (15) on it. That combining is made as from outer diameter of inner cap (9) and inner diameter of outer cap (12). Pin nest (13); is placed as at least 1 quantity on outer cap (12); provides high viscous liquid being filled into housing (14) that the viscous liquid is filled in, and ultimately closed with a pin. Pin is placed and fixed into pin nest (13) with a groove mass that exists in pin nest (13); the stated pin nest (13) has a round shape. The viscous liquid filled housing (14); high viscous liquid is filled in it, a volume that is formed between balancing mass (1 1 ), inner cap (9) and outer cap (12). Cooling hole (15); placed as at least one quantity with a 90 degree of twist, ejects the heat that arises on rubber part (4) out via propeller (7).

Claims

C L A I M S
Viscous torsional vibration damper crankshaft pulley is characterized by comprising a pulley groove (1 ) which has the features of transmitting the motion and the torque from crankshaft to other engine components, and damping the rotational and torsional vibrations, a bush
(2), a sub bearing support
(3), a rubber body
(4), a sub corner bearing support
(5), a hub (6), a propeller (7), a hub shaft (8), an inner cap (9), an upper corner bearing support (10), a balancing mass (1 1 ), an outer cap (12), a pin hole(13), a viscous liquid housing (14) and a cooling hole (15).
The pulley groove (1 ) of Claim 1 is characterized comprising a belt groove (1 .1 ), a belt groove guide lines (1 .2) components,
6 groove and 4 groove types.
The sub corner bearing support (5) of Claim 1 is characterized by being placed in the corners of balancing mass (1 1 ) and inner cap (9) with 90 degree bending in order to prevent the balancing mass (1 1 ) touching inner cap (9) while a movement.
The rubber body (4) of Claim 1 is characterized by being placed between pulley groove (1 ) and hub (6) in order to damp the torsional vibration which arises from the difference between the torque from crankshaft and the torque on the hub (6) that arises from the belt on the pulley groove (1 ).
The propeller
(7) of Claim 1 is characterized by being placed between rubber body (4) and outer cap (12) in order to eject (by convection heat transfer) the heat which arises on rubber body (4) via cooling hole (15) which exists on outer cap (12).
The inner cap (9) of Claim 1 is characterized by allowing balancing mass (1 1 ) rotating inside; and touching outer cap (12) in order to form housing for high viscosity liquid.
The outer cap (12) of Claim 6 is characterized by having at least one pin hole and at least one cooling hole (15) for cooling process on it.
8. The balancing mass (1 1 ) of Claim 6 is characterized by being positioned in viscous oil housing (14) and having the same geometric shape with viscous oil housing (14) in order to turn inside viscous oil housing (14) as independently from other components in order to damp rotational vibrations which arises from the kinetic energy that is from sudden acceleration's mass inertia on pulley.
9. The cooling hole (15) of Claim 7 is characterized by being placed to form a 90 degree angle to outer cap (12) in order to eject the heat that arises on rubber body (4) to outside via propeller (7).
10. The upper corner bearing support (10) is characterized by being placed on the corners of balancing mass (1 1 ) and outer cap (12) with 90 degree bending in order to prevent the balancing mass (1 1 ) to move towards outer cap (12) and inner diameter while in action.
PCT/TR2017/050005 2016-12-06 2017-01-06 Viscous torsional damper crankshaft pulley WO2018106201A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201617865 2016-12-06
TR2016/17865 2016-12-06

Publications (1)

Publication Number Publication Date
WO2018106201A1 true WO2018106201A1 (en) 2018-06-14

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2594555A (en) * 1949-03-18 1952-04-29 Schwitzer Cummins Company Vibration damper
US2716904A (en) * 1953-04-15 1955-09-06 Schwitzer Cummins Company Damper assembly
FR2527727A1 (en) * 1982-06-01 1983-12-02 Dayco Corp PULLEY FOR BELT AND MANUFACTURING METHOD THEREOF
EP0503424A1 (en) * 1991-03-12 1992-09-16 HASSE & WREDE GmbH Torsional vibration damper integrated into a pulley
US5308289A (en) * 1991-08-09 1994-05-03 Toyoda Gosei Co., Ltd. Damper pulley
US6026709A (en) * 1997-02-28 2000-02-22 Palsis Schwingungstechnik Gmbh & Co. Device for damping oscillations of a crankshaft
EP1146255A2 (en) * 2000-04-15 2001-10-17 Firma Carl Freudenberg Torsional elastic coupling for belt pulley
US20040116191A1 (en) * 2000-03-21 2004-06-17 Rolf Pape Vibration-decoupled pulley having an integrated visco damper
WO2005038293A1 (en) * 2003-10-16 2005-04-28 Metaldyne International Deutschland Gmbh Torsional vibration damper
DE102006016202B3 (en) * 2006-04-06 2007-07-05 Carl Freudenberg Kg Belt pulley, has integrated torsional vibration damper, hub ring and flywheel rim surrounding hub ring with first radial distance, whereas first spring body is arranged in first formed crack over first space

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2594555A (en) * 1949-03-18 1952-04-29 Schwitzer Cummins Company Vibration damper
US2716904A (en) * 1953-04-15 1955-09-06 Schwitzer Cummins Company Damper assembly
FR2527727A1 (en) * 1982-06-01 1983-12-02 Dayco Corp PULLEY FOR BELT AND MANUFACTURING METHOD THEREOF
EP0503424A1 (en) * 1991-03-12 1992-09-16 HASSE & WREDE GmbH Torsional vibration damper integrated into a pulley
US5308289A (en) * 1991-08-09 1994-05-03 Toyoda Gosei Co., Ltd. Damper pulley
US6026709A (en) * 1997-02-28 2000-02-22 Palsis Schwingungstechnik Gmbh & Co. Device for damping oscillations of a crankshaft
US20040116191A1 (en) * 2000-03-21 2004-06-17 Rolf Pape Vibration-decoupled pulley having an integrated visco damper
EP1146255A2 (en) * 2000-04-15 2001-10-17 Firma Carl Freudenberg Torsional elastic coupling for belt pulley
WO2005038293A1 (en) * 2003-10-16 2005-04-28 Metaldyne International Deutschland Gmbh Torsional vibration damper
DE102006016202B3 (en) * 2006-04-06 2007-07-05 Carl Freudenberg Kg Belt pulley, has integrated torsional vibration damper, hub ring and flywheel rim surrounding hub ring with first radial distance, whereas first spring body is arranged in first formed crack over first space

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