Vehicle fluid suspension circuit with equalized supply and discharge speeds
US4858895A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 1988 |
| Grant date | Aug 22, 1989 |
| Priority date | — |
| Expiry date | May 31, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2600/85
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicle fluid suspension circuit has an efficient cross-sectional area of the high pressure supply line is smaller than that of the low pressure exhaust line. The fluid supply and discharge speed can be equalized so that the vehicle height increasing speed and the vehicle height decreasing speed are equalized with each other, and the ride comfort is improved. Furthermore, the vehicle suspension circuit has two lines from fluid suspension to low pressure reserve tank are provided during fluid exhaust. A simplified construction can vary a speed of exhausted fluid from fluid suspension. Feeding and exhausting speeds, computation for the valve opening and closing time intervals is improved to be quite simple, and quick control is attained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.