Method and apparatus for noise suppression in a fluid line
US6155378A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1999 |
| Grant date | Dec 5, 2000 |
| Priority date | — |
| Expiry date | Jul 1, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60H2001/006
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Method and apparatus for suppression of fluid-borne noise in hydraulic or fluid handling systems, such as automotive power steering, power brakes, air conditioning and fuel systems wherein a multi-chamber solution to attenuate fluid-borne noise in the system is disclosed. This solution optimizes both damping, interference and wave cancellation mechanisms in a fluid system and consists of dividing an attenuator conduit hose or pipe assembly serially into tuning chambers by a restrictor or other mechanism. In some embodiments, a tuner is placed in each and every chamber. The number of chambers can vary between two and four depending on the objective of the attenuation. In order to attenuate the ripple at the pump, the tuner in the first or most upstream chamber can be removed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.