CONTROL DEVICE OF A POWERTRAIN WITH A CENTRIFUGAL PENDULUM DAMPER

• US 20170159747A1
• Filed: 12/02/2016
• Published: 06/08/2017
• Est. Priority Date: 12/07/2015
• Status: Active Grant

• Current Assignee: Mazda Motor Corporation
• Original Assignee: Mazda Motor Corporation
• Inventors: Nakashima, Kyosei, Nakayama, Yasunari, Nakagishi, Masaru, Saito, Tadashi, Domen, Narifumi, Hongawara, Narihito
• Granted Patent: US 10,240,659 B2
• Time in Patent Office: Days
• CPC Class Codes: F16D 2300/22 Vibration damping
• CPC Class Codes: F16D 2500/10412 Transmission line of a vehicle
• CPC Class Codes: F16D 2500/1045 Friction clutch
• CPC Class Codes: F16D 2500/1066 Hybrid
• CPC Class Codes: F16D 2500/30401 On-off signal indicating the engage or disengaged position of the clutch
• CPC Class Codes: F16D 2500/30415 Speed of the input shaft
• CPC Class Codes: F16D 2500/30426 Speed of the output shaft
• CPC Class Codes: F16D 2500/306 from the engine
• CPC Class Codes: F16D 2500/3067 Speed of the engine
• CPC Class Codes: F16D 2500/316 Other signal inputs not covered by the groups above
• CPC Class Codes: F16D 2500/50293 Reduction of vibrations
• CPC Class Codes: F16D 2500/7041 Position
• CPC Class Codes: F16D 2500/70426 Clutch slip
• CPC Class Codes: F16D 48/06 Control by electric or electronic means, e.g. of fluid pressure
• CPC Class Codes: F16F 15/002 characterised by the control method or circuitry control of mechanical oscillations per se G05D19/00
• CPC Class Codes: F16F 15/145 Masses mounted with play with respect to driving means thus enabling free movement over a limited range

Abstract

A control device of a powertrain with a centrifugal pendulum damper is provided in which the centrifugal pendulum damper and a power transmission shaft are operatively coupled via a connection/disconnection mechanism, and the control device of the powertrain with the centrifugal pendulum damper includes a connection/disconnection control module for controlling an engagement degree of the connection/disconnection mechanism by controlling the engagement degree of the connection/disconnection mechanism such that the centrifugal pendulum damper rotates at or below an predetermined upper rotational speed limit.

Claims

1. A control device for a powertrain with a centrifugal pendulum damper, the centrifugal pendulum damper and a power transmission shaft being operatively coupled via a connection/disconnection mechanism, the control device comprising:

a connection/disconnection control module operatively coupled to the connection/disconnection mechanism and configured to control an engagement degree of the connection/disconnection mechanism, wherein

the connection/disconnection control module controls the engagement degree of the connection/disconnection mechanism such that the centrifugal pendulum damper rotates at or below a first predetermined upper rotational speed limit.

2. The control device of claim 1, wherein the power transmission shaft and the centrifugal pendulum damper are operatively coupled via a speed increasing mechanism.

3. The control device of claim 2, wherein the first predetermined upper rotational speed limit is set according to a load of a power source.

4. The control device of claim 3, wherein when a rotational speed of the centrifugal pendulum damper has increased to the first predetermined upper rotational speed limit, the connection/disconnection control module controls the engagement degree of the connection/disconnection mechanism to a released side to cause the rotational speed of the centrifugal pendulum damper to be at or below the first predetermined upper rotational speed limit.

5. The control device of claim 4, wherein a control of the connection/disconnection mechanism to the released side by the connection/disconnection control module includes a control for releasing the connection/disconnection mechanism, and a control for slipping the connection/disconnection mechanism.

6. The control device of claim 2, wherein when a rotational speed of the centrifugal pendulum damper has increased to the first predetermined upper rotational speed limit, the connection/disconnection control module controls the engagement degree of the connection/disconnection mechanism to a released side to cause the rotational speed of the centrifugal pendulum damper to be at or below the first predetermined upper rotational speed limit.

7. The control device of claim 6, wherein a control of the connection/disconnection mechanism to the released side by the connection/disconnection control module includes a control for releasing the connection/disconnection mechanism, and a control for slipping the connection/disconnection mechanism.

8. The control device of claim 2, wherein when a rotational speed of the centrifugal pendulum damper has increased to a second predetermined upper rotational speed limit which is lower than the first predetermined upper rotational speed limit, the connection/disconnection control module controls the engagement degree of the connection/disconnection mechanism to a released side.

9. The control device of claim 8, wherein a control of the connection/disconnection mechanism to the released side by the connection/disconnection control module includes a control for releasing the connection/disconnection mechanism, and a control for slipping the connection/disconnection mechanism.

10. The control device of claim 3, wherein when a rotational speed of the centrifugal pendulum damper has increased to a second predetermined upper rotational speed limit which is lower than the first predetermined upper rotational speed limit, the connection/disconnection control module controls the engagement degree of the connection/disconnection mechanism to a released side.

11. The control device of claim 10, wherein a control of the connection/disconnection mechanism to the released side by the connection/disconnection control module includes a control for releasing the connection/disconnection mechanism, and a control for slipping the connection/disconnection mechanism.

12. The control device of claim 1, wherein the first predetermined upper rotational speed limit is set according to a load of a power source.

13. The control device of claim 12, wherein when a rotational speed of the centrifugal pendulum damper has increased to the first predetermined upper rotational speed limit, the connection/disconnection control module controls the engagement degree of the connection/disconnection mechanism to a released side to cause the rotational speed of the centrifugal pendulum damper to be at or below the first predetermined upper rotational speed limit.

14. The control device of claim 13, wherein a control of the connection/disconnection mechanism to the released side by the connection/disconnection control module includes a control for releasing the connection/disconnection mechanism, and a control for slipping the connection/disconnection mechanism.

15. The control device of claim 12, wherein when a rotational speed of the centrifugal pendulum damper has increased to a second predetermined upper rotational speed limit which is lower than the first predetermined upper rotational speed limit, the connection/disconnection control module controls the engagement degree of the connection/disconnection mechanism to a released side.

16. The control device of claim 15, wherein a control of the connection/disconnection mechanism to the released side by the connection/disconnection control module includes a control for releasing the connection/disconnection mechanism, and a control for slipping the connection/disconnection mechanism.

17. The control device of claim 1, wherein when a rotational speed of the centrifugal pendulum damper has increased to the first predetermined upper rotational speed limit, the connection/disconnection control module controls the engagement degree of the connection/disconnection mechanism to a released side to cause the rotational speed of the centrifugal pendulum damper to be at or below the first predetermined upper rotational speed limit.

18. The control device of claim 17, wherein a control of the connection/disconnection mechanism to the released side by the connection/disconnection control module includes a control for releasing the connection/disconnection mechanism, and a control for slipping the connection/disconnection mechanism.

19. The control device of claim 1, wherein when a rotational speed of the centrifugal pendulum damper has increased to a second predetermined upper rotational speed limit which is lower than the first predetermined upper rotational speed limit, the connection/disconnection control module controls the engagement degree of the connection/disconnection mechanism to a released side.

20. The control device of claim 19, wherein a control of the connection/disconnection mechanism to the released side by the connection/disconnection control module includes a control for releasing the connection/disconnection mechanism, and a control for slipping the connection/disconnection mechanism.