Power plants – Pressure fluid source and motor – Condition responsive control of pump or motor displacement
Patent
1986-11-10
1988-05-31
Michalsky, Gerald A.
Power plants
Pressure fluid source and motor
Condition responsive control of pump or motor displacement
60489, 60490, F15B 1518
Patent
active
047472693
ABSTRACT:
A power-transmitting system provides conservation of (speed) X(torque) product between an input shaft and an output shaft. It represents the equivalent of the power being transmitted through the system. This power is transformed into the form of incompressible fluid flow at high pressure by a volumetric pump coupled to the input shaft. This fluid flow is forced at that pressure into a volumetric motor. The fluid then pushes on pistons which are constrained by a fixed enclined track. The pistons are laterally guided in a rotor and radially arranged therein. The enclined track forms a closed curved surface which surrounds these pistons and the resultant of the reactions of the track surface on the pistons results in a torque being exerted on the rotor. The structure supporting the track surface is slidable in a manner such that the piston strokes are adjustable between zero and a set maximum. For a given power level input, the torque developed by the output shaft and the speed thereof are controlled by adjusting the position of the slidable track with respect to the rotor location.
REFERENCES:
patent: 4244279 (1981-01-01), Stewart et al.
patent: 4258548 (1981-03-01), Hall et al.
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