Patent ID: 6619184
Filing Date: 2003-09-16
Classification: F03C,F04C,F16D,F16H

Abstract:
A hydraulic radial piston engine comprising:a plurality of torque-generating pistons; a hydraulic fuel intake (3) for supplying the plurality of torque-generating pistons with a hydraulic fluid; a valve (1) having means for moving the valve in a reverse or forward direction, the means for moving including a chamber (11); a sealing point contacting the valve (1) between the hydraulic fuel intake (3) and the chamber (11); a throttle (26, 27) for feeding or removing fluid from the chamber (11) of the valve (1); and wherein, when the valve (1) is in a first position hydraulic fuel is supplied to all of the plurality of torque-generating pistons, and when the valve is in a second position only a first portion of the plurality of torque generating pistons is supplied hydraulic fuel from the hydraulic fuel intake (3) and a second portion of torque generating pistons is connected to a hydraulic fluid return flow, and when the pressure in the hydraulic fuel intake (3) is below a certain pressure level all the pistons of the plurality of torque generating pistons are connected to the hydraulic fuel intake.