公开(公告)号：US20210010559A1

公开(公告)日：2021-01-14

申请号：US16509731

申请日：2019-07-12

Applicant: Tenneco Automotive Operating Company Inc.

Inventor： Diego Alves de Oliveira ,  Nirupam Kar ,  Matthew Ryan Schelosky ,  Matthew Roessle

IPC: F16F9/36 ,  B60G13/08 ,  F16F9/49 ,  F16F9/58

Abstract: A damper includes a pressure tube and a piston. The piston defines a rebound chamber and a compression chamber. The damper further includes a piston rod that reciprocates with the piston. The damper includes a sealing ring slidably disposed around the piston rod. The sealing ring includes a locking mechanism adapted to lock the sealing ring around the piston rod. The sealing ring also includes an inner surface having a plurality of concave surfaces and a plurality of convex surfaces. Each of the plurality of concave surfaces is located adjacent to a corresponding convex surface of the plurality of convex surfaces. The sealing ring further includes an upper surface extending between the outer and inner surfaces. The upper surface defines a plurality of channels. The sealing ring further includes grooves and bleeds for tuning energy dissipated by the damper during rebound stroke to help reduction of noise.

公开(公告)号：US10989268B2

公开(公告)日：2021-04-27

申请号：US16509731

申请日：2019-07-12

Applicant: Tenneco Automotive Operating Company Inc.

Inventor： Diego Alves de Oliveira ,  Nirupam Kar ,  Matthew Ryan Schelosky ,  Matthew Roessle

IPC: F16F9/36 ,  B60G13/08 ,  F16F9/58 ,  F16F9/49

Abstract: A damper includes a pressure tube and a piston. The piston defines a rebound chamber and a compression chamber. The damper further includes a piston rod that reciprocates with the piston. The damper includes a sealing ring slidably disposed around the piston rod. The sealing ring includes a locking mechanism adapted to lock the sealing ring around the piston rod. The sealing ring also includes an inner surface having a plurality of concave surfaces and a plurality of convex surfaces. Each of the plurality of concave surfaces is located adjacent to a corresponding convex surface of the plurality of convex surfaces. The sealing ring further includes an upper surface extending between the outer and inner surfaces. The upper surface defines a plurality of channels. The sealing ring further includes grooves and bleeds for tuning energy dissipated by the damper during rebound stroke to help reduction of noise.