Speed dependent control for dual air spring configuration
US7815199B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 11, 2009 |
| Grant date | Oct 19, 2010 |
| Priority date | — |
| Expiry date | May 16, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2500/20
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An air suspension system is configured to maintain a desired vehicle comfort ride level as a function of vehicle speed. The air suspension system includes a plurality of air spring assemblies that each include a piston airbag and a primary airbag mounted around the piston airbag. A first set of the air spring assemblies is tuned to a first ride rate and a second set of the air spring assemblies is tuned to a second ride rate. Pressure is continuously varied within the first and second sets of air springs to maintain a first predetermined ride rate difference between the first ride rate and the second ride rate under a low vehicle speed condition and to maintain a second predetermined ride rate difference between the first ride rate and the second ride rate under a high vehicle speed condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.