Electronic controlled fluid suspension system
US4937748A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 1988 |
| Grant date | Jun 26, 1990 |
| Priority date | — |
| Expiry date | Sep 2, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2800/915
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An electronic controlled suspension system detects a load on the fluid actuators and calculates a torsional load on the vehicle. Responsive to the calculated torsional load, corrective control is executed on the fluid flow to and from the fluid actuators, eliminating torsional load on the vehicle. Therefore, the driving characteristic is prevented from changing due to an unbalanced load on the vehicle. On the other hand, the electronic controlled suspension system detects a vehicle's cornering state. Responsive to the cornering state detected, control signals are output to increase the roll stiffness distribution to the front wheels. As a result, the roll stiffness distribution to the front wheels while the vehicle is about to corner becomes larger than that while the vehicle is steadily cornering. Responsive to the control signals, the vehicle attitude is controlled by supplying and discharging fluid to and from fluid actuators. Consequently, when the vehicle is just starting to corner, laterally moving load is controlled, and quick-responsive steering is realized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.