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).