Automatic level controller of motor vehicle
US5652703A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 14, 1995 |
| Grant date | Jul 29, 1997 |
| Priority date | — |
| Expiry date | Mar 14, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2500/30
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An automatic level controller of a motor vehicle has height adjusters. Each adjuster is operatively interposed between a road wheel and a vehicle body and has a work fluid chamber communicated with a compressed fluid source. The pressure in the work fluid chamber of each height adjuster is controlled in accordance with an instruction signal applied thereto. By controlling the pressure, the level controller can create both a body lowering control mode and a body raising control mode. The height of a portion of the vehicle body, which portion is supported by selected one of the height adjusters, is detected by a height sensor. A standstill of the vehicle is detected by a sensor. A jack-up representing signal is issued when, under the body lowering control mode at the standstill of the vehicle, the height of the portion detected by the height sensor is kept increased for a given time. Upon issuance of the jack-up representing signal, the level controller is suppressed from producing the body lowering control mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.