公开(公告)号：US09777792B2

公开(公告)日：2017-10-03

申请号：US14960624

申请日：2015-12-07

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Michael E. McGuire ,  Gary Klein ,  Charles C. Weddle ,  Robert P. Marble

IPC: F16F9/50 ,  B60G13/08 ,  F16F9/19 ,  F16F9/348 ,  B60G17/08 ,  F16K31/00

CPC classification number: F16F9/50 ,  B60G13/08 ,  B60G17/08 ,  B60G2202/24 ,  B60G2500/11 ,  F16F9/19 ,  F16F9/348 ,  F16K31/005 ,  F16K31/006

Abstract: A damper assembly includes a housing and rod supported by the housing. A piston assembly is attached to the rod, and is positioned to separate an interior chamber of the housing into a first fluid chamber and a second fluid chamber. The piston assembly includes an annular plate that defines at least one orifice. The orifice interconnects the first fluid chamber and the second fluid chamber in fluid communication. The damper assembly includes a piezoelectric device that is moveable between a disengaged position and an engaged position, in response to a control signal. When disposed in the disengaged position, the piezoelectric device does not affect fluid flow through the at least one orifice. When disposed in the engaged position, the piezoelectric device does affect fluid flow through the at least one orifice, to adjust a damping rate of the piston assembly.

公开(公告)号：US09897159B2

公开(公告)日：2018-02-20

申请号：US15196625

申请日：2016-06-29

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Robert P. Marble ,  Gary Klein ,  Charles C. Weddle ,  Michael E. Mcguire

IPC: F16F9/52 ,  F16F9/348 ,  F16F9/19

CPC classification number: F16F9/523 ,  F16F9/19 ,  F16F9/348 ,  F16F9/3485 ,  F16F9/52 ,  F16F2222/02 ,  F16F2224/0258 ,  F16F2228/066

Abstract: A damper assembly includes a housing that defines an interior chamber. A rod is supported by the housing, and is at least partially disposed within the interior chamber. A piston assembly is attached to the rod within the interior chamber. The piston assembly separates the interior chamber into at least a first fluid chamber and a second fluid chamber. The piston assembly includes an annular plate defining at least one orifice, which interconnects the first fluid chamber and the second fluid chamber in fluid communication. The piston assembly includes at least one valve disc that is disposed adjacent a first face of the annular plate. An SMA device is disposed in contact with the valve disc. The SMA device is changeable between a first state and a second state, at a transition temperature, to control a bending stiffness of the valve disc to adjust a damping rate.

公开(公告)号：US20170159742A1

公开(公告)日：2017-06-08

申请号：US14960624

申请日：2015-12-07

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Michael E. McGuire ,  Gary Klein ,  Charles C. Weddle ,  Robert P. Marble

IPC: F16F9/50 ,  F16K31/00 ,  F16F9/348 ,  B60G17/08 ,  B60G13/08 ,  F16F9/19

CPC classification number: F16F9/50 ,  B60G13/08 ,  B60G17/08 ,  B60G2202/24 ,  B60G2500/11 ,  F16F9/19 ,  F16F9/348 ,  F16K31/005 ,  F16K31/006

Abstract: A damper assembly includes a housing and rod supported by the housing. A piston assembly is attached to the rod, and is positioned to separate an interior chamber of the housing into a first fluid chamber and a second fluid chamber. The piston assembly includes an annular plate that defines at least one orifice. The orifice interconnects the first fluid chamber and the second fluid chamber in fluid communication. The damper assembly includes a piezoelectric device that is moveable between a disengaged position and an engaged position, in response to a control signal. When disposed in the disengaged position, the piezoelectric device does not affect fluid flow through the at least one orifice. When disposed in the engaged position, the piezoelectric device does affect fluid flow through the at least one orifice, to adjust a damping rate of the piston assembly.

公开(公告)号：US20180003260A1

公开(公告)日：2018-01-04

申请号：US15196625

申请日：2016-06-29

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Robert P. Marble ,  Gary Klein ,  Charles C. Weddle ,  Michael E. Mcguire

IPC: F16F9/52 ,  F16F9/19 ,  F16F9/348

CPC classification number: F16F9/523 ,  F16F9/19 ,  F16F9/348 ,  F16F9/3485 ,  F16F9/52 ,  F16F2222/02 ,  F16F2224/0258 ,  F16F2228/066

Abstract: A damper assembly includes a housing that defines an interior chamber. A rod is supported by the housing, and is at least partially disposed within the interior chamber. A piston assembly is attached to the rod within the interior chamber. The piston assembly separates the interior chamber into at least a first fluid chamber and a second fluid chamber. The piston assembly includes an annular plate defining at least one orifice, which interconnects the first fluid chamber and the second fluid chamber in fluid communication. The piston assembly includes at least one valve disc that is disposed adjacent a first face of the annular plate. An SMA device is disposed in contact with the valve disc. The SMA device is changeable between a first state and a second state, at a transition temperature, to control a bending stiffness of the valve disc to adjust a damping rate.