Power steering device

A first fluid passage extends from a first outlet/inlet port of a hydraulic pump to a first work chamber of a power cylinder, and a second fluid passage extends from a second outlet/inlet port of the pump to a second work chamber of the power cylinder. A switch system switches the role of the first...

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Bibliographic Details
Main Authors NAKAZAWA CHIHARU, KURATA MASAKAZU, SAKAKI TOSHIMITSU, YOKOTA TADAHARU
Format Patent
LanguageEnglish
Published 21.11.2002
Edition7
Subjects
LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
MOTOR VEHICLES
PERFORMING OPERATIONS
TRAILERS
TRANSPORTING
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Summary:A first fluid passage extends from a first outlet/inlet port of a hydraulic pump to a first work chamber of a power cylinder, and a second fluid passage extends from a second outlet/inlet port of the pump to a second work chamber of the power cylinder. A switch system switches the role of the first and second outlet/inlet ports in accordance with a turning direction of a steering wheel. Flow control mechanisms are respectively incorporated with the first and second fluid passages, so that a controlled flow of hydraulic fluid from the hydraulic pump to the first or second work chamber and vice versa are appropriately carried out thereby providing the driver with a comfortable steering feeling. A bypass arrangement may be provided between the first and second fluid passages to deal with a residual pressure that would be remained in the first or second work chamber when the hydraulic pump is under inoperative condition.
Bibliography:Application Number: US20020134489