Pressure medium fluid circuit for active suspension system with variable fluid source discharge rate depending upon magnitude of stroke in relative displacement between vehicular body and suspension member
US5062660A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 1990 |
| Grant date | Nov 5, 1991 |
| Priority date | — |
| Expiry date | Apr 27, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2600/90
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An active suspension system utilizes an acceleration exerted on a vehicle body and a stroke magnitude in relative displacement between the vehicle body and a suspension member as parameters for controlling discharge rate of pressure medium fluid from a pressure source unit. The pressure source unit is normally driven at limited discharge rate for minimizing driving power consumption. The pressure source unit is responsive to the vertical acceleration greater than a predetermined acceleration criterion and to vertical stroke magnitude greater than a predetermined stroke criterion to increase discharge rate for compensating pressure medium fluid amount to be consumed for suspension control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.