Suspension control apparatus
US11104198B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2018 |
| Grant date | Aug 31, 2021 |
| Priority date | — |
| Expiry date | Sep 21, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2400/10
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A shock absorber includes an inner cylinder electrode sealingly containing electrorheological fluid therein, a piston slidably inserted in the inner cylinder electrode, and a relief valve provided on the piston and configured to relieve an actual damping force according to a desired value. The controller includes an instruction value calculation portion configured to determine a high-voltage instruction value to output to the shock absorber based on a detection value output from a sprung acceleration sensor and an unsprung acceleration sensor. The electrorheological fluid has such a characteristic that an actual damping force value output according to the instruction value output from the instruction value calculation portion increases when a temperature is low compared to when the temperature is high. The relief valve and the high-voltage instruction value are set based on the actual damping force value that output when the temperature is high.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.