Damper device and design method of damper device

Patent metadata

Field	Value
Publication number	US-11867239-B2
Application number	US-201917266658-A
Country	US
Kind code	B2
Filing date	Sep 12, 2019
Priority date	Sep 20, 2018
Publication date	Jan 9, 2024
Grant date	Jan 9, 2024

Abstract

A damper device includes: an input element coupled to an engine via a clutch; an intermediate element; an output element coupled to an input shaft of a transmission; a first elastic body that is disposed between the input element and the intermediate element; and a second elastic body that is disposed between the intermediate element and the output element and that acts in series with the first elastic body. When a total moment of inertia of the output element and a rotation element that rotates integrally with the output element on the engine side with respect to the input shaft is J2, and a total moment of inertia of all rotation members included between the input shaft and a differential gear coupled to an output shaft of the transmission is JTM, 0.12≤J2/(J2+JTM)≤0.5 is satisfied.

First claim

The invention claimed is:

1. A transmission system including a damper device comprising:
an input element coupled to an engine via a clutch;
an output element coupled to an input shaft of a transmission; and
a plurality of elastic bodies disposed between the input element and the output element, wherein
when a total moment of inertia of the output element and a rotation element that rotates integrally with the output element on the engine side with respect to the input shaft is J 2 , and when a total moment of inertia of all rotating members included between the input shaft and a differential gear coupled to an output shaft of the transmission is J TM , 0.12≤J 2 /(J 2 +J TM )≤0.55 is satisfied.

2. The transmission system including the damper device according to claim 1 , wherein 0.15≤J 2 /(J 2 +J TM )≤0.3 is satisfied.

3. The transmission system including the damper device according to claim 1 , wherein 0.19≤J 2 /(J 2 +J TM )≤0.23 is satisfied.

4. The transmission system including the damper device according to claim 1 , wherein a combined spring constant of the plurality of elastic bodies is 1400 to 1800 Nm/rad.

5. A designing method of a damper device, the method comprising:
providing an input element coupled to an engine via a clutch;
providing an output element coupled to an input shaft of a transmission; and
providing a plurality of elastic bodies disposed between the input element and the output element, wherein
when a total moment of inertia of the output element and a rotation element that rotates integrally with the output element on the engine side with respect to the input shaft is J 2 , and a total moment of inertia of all rotation members included between the input shaft and a differential gear coupled to an output shaft of the transmission is J TM , setting the moment of inertia J 2 so that 0.12≤J 2 /(J 2 +J TM )≤0.55 is satisfied.

6. A transmission system including a damper device comprising:
an input element coupled to an engine via a clutch;
an intermediate element;
an output element coupled to an input shaft of a transmission;
a first elastic body that is disposed between the input element and the intermediate element; and
a second elastic body that is disposed between the intermediate element and the output element and that acts in series with the first elastic body, wherein
when a total moment of inertia of the output element and a rotation element that rotates integrally with the output element on the engine side with respect to the input shaft is J2, and a total moment of inertia of all rotation members included between the input shaft and a differential gear coupled to an output shaft of the transmission is J TM , 0.12≤J 2 /(J 2 +J TM )≤0.5 is satisfied.

7. The transmission system including the damper device according to claim 6 , wherein 0.15≤J 2 /(J 2 +J TM )≤0.3 is satisfied.

8. The transmission system including the damper device according to claim 7 , wherein the rotation element that rotates integrally with the output element includes a hub that is coupled to the output element and that is fixed to the input shaft of the transmission, and a mass body that is coupled to the output element.

9. The transmission system including the damper device according to claim 8 , wherein
the damper device is disposed in a fluid chamber of a starting device including a pump impeller and a turbine runner, and
the rotation element that rotates integrally with the output element includes the turbine runner coupled to the output element.

10. The transmission system including the damper device according to claim 9 , wherein
the input element includes one input plate, and
the output element includes two output plates that face each other along an axial direction of the damper device and that are coupled to each other so as to sandwich the input plate.

11. The transmission system including the damper device according to claim 10 , wherein the intermediate element is disposed between the two output plates in the axial direction.

12. The transmission system including the damper device according to claim 11 , wherein the damper device further includes a third elastic body that is held at least by the output element when torque is not transmitted between the input element and the output element, and that acts in parallel with at least either one of the first and second elastic bodies as a relative torsion angle of the input element and the output element increases when torque is transmitted between the input element and the output element.

13. The transmission system including the damper device according to claim 12 , wherein a combined spring constant of the first and second elastic bodies is 600 to 1000 Nm/rad.

14. The transmission system including the damper device according to claim 6 , wherein 0.19≤J 2 /(J 2 +J TM )≤0.23 is satisfied.

15. The transmission system including the damper device according to claim 6 , wherein the rotation element that rotates integrally with the output element includes a hub that is coupled to the output element and that is fixed to the input shaft of the transmission, and a mass body that is coupled to the output element.

16. The transmission system including the damper device according to claim 6 , wherein
the input element includes one input plate, and
the output element includes two output plates that face each other along an axial direction of the damper device and that are coupled to each other so as to sandwich the input plate.

17. The transmission system including the damper device according to claim 6 , wherein the damper device further includes a third elastic body that is held at least by the output element when torque is not transmitted between the input element and the output element, and that acts in parallel with at least either one of the first and second elastic bodies as a relative torsion angle of the input element and the output element increases when torque is transmitted between the input element and the output element.

18. The transmission system including the damper device according to claim 6 , wherein a combined spring constant of the first and second elastic bodies is 600 to 1000 Nm/rad.

19. A designing method of a damper device, the method comprising:
providing an input element coupled to an engine via a clutch;
providing an intermediate element;
providing an output element coupled to an input shaft of a transmission;
providing a first elastic body that is disposed between the input element and the intermediate element;
providing a second elastic body that is disposed between the intermediate element and the output element and that acts in series with the first elastic body, wherein
when a total moment of inertia of the output element and a rotation element that rotates integrally with the output element on the engine side with respect to the input shaft is J 2 , and a total moment of inertia of all rotation members included between the input shaft and a differential gear coupled to an output shaft of the transmission is J TM , setting the moment of inertia J 2 so that 0.12≤J 2 /(J 2 +J TM )≤0.5 is satisfied.

Assignees

• Aisin Corp

Inventors

• Wajima Masaki
• Nagae Akihiro
• Hirai Yuichiro

Classifications

• F16D3/12 Primary

  specially adapted for accumulation of energy to absorb shocks or vibration (by making use of fluid elements F16D3/80) · CPC title

• F02N7/00

  Starting apparatus having fluid-driven auxiliary engines or apparatus · CPC title

• F16F15/13469

  Combinations of dampers, e.g. with multiple plates, multiple spring sets, i.e. complex configurations · CPC title

• F16H45/02

  with mechanical clutches for bridging a fluid gearing of the hydrokinetic type (control of torque converter lock-up clutches F16H61/14) · CPC title

• F16F2226/00

  Manufacturing; Treatments · CPC title