Hydraulic actuator

An hydraulic actuator for a motor vehicle clutch has an actuating cylinder (25) connected selectively to an hydraulic accumulator (15) or a reservoir (19) through a control valve (23). The accumulator (15) is supplied from the reservoir by a pump (11) operated by a drive (7) such as an electric moto...

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Bibliographic Details
Main Authors RAINER REUTHAL, HANS-JURGEN SCHNEIDER, ROBERT SEUFERT
Format Patent
LanguageEnglish
Published 27.05.1998
Edition6
Subjects
BLASTING
DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
ENGINEERING ELEMENTS AND UNITS
FLUID-PRESSURE ACTUATORS
FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS
GEARING
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
HYDRAULICS OR PNEUMATICS IN GENERAL
LIGHTING
MECHANICAL ENGINEERING
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL
THERMAL INSULATION IN GENERAL
WEAPONS
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Summary:An hydraulic actuator for a motor vehicle clutch has an actuating cylinder (25) connected selectively to an hydraulic accumulator (15) or a reservoir (19) through a control valve (23). The accumulator (15) is supplied from the reservoir by a pump (11) operated by a drive (7) such as an electric motor (9). Control means (13) control operation of the motor (9) and the control valve (23). In order to eliminate a pressure sensor in the accumulator (15) a sensor (17) measures the power input of the drive (7) which represents the pressure in the accumulator (15), signals from the sensor (17) being used by the control means (13) to control operation of the drive (7).
Bibliography:Application Number: GB19970024511