Electronically controlled power steering system
US5307892A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 13, 1992 |
| Grant date | May 3, 1994 |
| Priority date | — |
| Expiry date | Apr 13, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D6/08
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An electronically controlled power steering system for motor vehicles is disclosed for steering dirigible wheels in response to an input torque applied to a steering wheel. The power steering system includes a mechanical steering gear mechanism coupled to the steering wheel for generating a mechanically derived steering force in response to the input torque. A power cylinder is coupled to the mechanical steering gear mechanism for producing a hydraulically derived steering force which augments the mechanically derived steering force. A control valve is provided which is in fluid communication with the power cylinder for generating differential pressure applied to the power cylinder. A first signal is generated which is indicative of the input torque applied to the steering wheel. A signal processing unit generates an output signal in response to the first signal. The signal processing unit is operable to selectively actuate the control valve in response to the output signal for selectively regulating the hydraulically derived steering force generated by the power cylinder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.