Power plants – Pressure fluid source and motor – Methods of operation
Patent
1995-04-27
1996-04-16
Look, Edward K.
Power plants
Pressure fluid source and motor
Methods of operation
60415, 60416, 91 4R, F16D 3100, F15B 2104
Patent
active
055071449
ABSTRACT:
A hydraulic accumulator system alternately stores energy in the form of gas pressure and converts the stored energy into work by gas expansion. The hydraulic accumulator system, by connection to drive wheels of a vehicle, can serve as a hydropneumatic powertrain for the vehicle. High-pressure and low-pressure fluid drive units are operable either in a motor mode or in a pump mode. A plurality of high-pressure liquid vessels and a plurality of low-pressure liquid vessels are connected in parallel between the fluid drive units and a gas reservoir, with the high-pressure fluid drive unit connecting with the high-pressure liquid vessels and the low-pressure fluid drive unit connecting with the low-pressure liquid vessels. A liquid reservoir supplies liquid to the fluid drive units when operating in the pump mode and receives liquid from the fluid drive units operating in a motor mode. A method of operating the system is also disclosed herein.
REFERENCES:
patent: 3100965 (1963-08-01), Blackburn
patent: 4098144 (1978-07-01), Besel et al.
patent: 4674280 (1987-06-01), Stuhr
patent: 4731991 (1988-03-01), Hagin
Gray Jr. Charles L.
Safoutin Michael J.
Look Edward K.
Nguyen Hoang
The United States of America as represented by the Administrator
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