公开(公告)号：US20160025181A1

公开(公告)日：2016-01-28

申请号：US14878397

申请日：2015-10-08

Applicant: Tenneco Automotive Operating Company Inc.

Inventor： Mark NOWACZYK ,  Jelle Van de PLAS ,  Jan VOCHTEN

IPC: F16F9/512 ,  F16F9/18

CPC classification number: F16F9/5126 ,  F16F9/348 ,  F16F9/50

Abstract: A shock absorber has a pressure tube with a piston assembly slidably disposed within the pressure tube and attached to a piston rod. The pressure tube is disposed within a reserve tube and a working fluid reservoir is formed between the pressure tube and the reserve tube. The piston assembly divides the pressure tube into an upper working chamber and a lower working chamber. A base valve assembly controls a flow of working fluid between the working fluid reservoir and the lower working chamber. The base valve assembly includes a frequency dependent valve system that provides an increased level of damping for each compression stroke of the piston assembly during low frequency movements of the shock absorber. A lesser level of damping is provided for each compression stroke during high frequency movements of the shock absorber.

Abstract translation: 减震器具有压力管，其中活塞组件可滑动地设置在压力管内并附接到活塞杆。 压力管设置在储备管内，并且在压力管和储备管之间形成工作流体储存器。 活塞组件将压力管分成上工作室和下工作室。 基阀组件控制工作流体储存器和下工作室之间的工作流体流。 基阀组件包括频率依赖阀系统，其在减震器的低频运动期间为活塞组件的每个压缩行程提供增加的阻尼水平。 在减震器的高频运动期间为每个压缩冲程提供较低水平的阻尼。