Power plants – Pressure fluid source and motor – With control means for structure storing work driving energy
Patent
1995-04-27
1996-12-03
Nguyen, Hoang
Power plants
Pressure fluid source and motor
With control means for structure storing work driving energy
60597, 60668, 91 4R, F16D 3102, F15B 2104
Patent
active
055796400
ABSTRACT:
A hydropneumatic powertrain includes a fluidic driver connected in parallel with first and second liquid tanks connected, respectively, with first and second gas vessels. The gas within each gas vessel is in fluid communication with the liquid within the corresponding liquid vessel. A prime mover drives a pump to pump liquid alternately into one of the two liquid tanks connected in parallel with the pump. Switch valving directs the discharge of the pump to either the first liquid tank or the second liquid tank, while the liquid tank not receiving liquid from the pump discharge is discharging its liquid, driven by expansion of gas within the corresponding gas vessel, to drive the fluidic driver which, in turn, drives the drive wheels of the vehicle. Each gas tank is equipped with a heater and a cooler whereby the gas vessel, in the compression portion of the cycle, is cooled while the other gas vessel is heated for expansion of the gas contained therein. Thus, the fluidic driver can be continuously driven by alternating discharges from the two liquid tanks.
REFERENCES:
patent: 3648458 (1972-03-01), McAlister
patent: 3901033 (1975-08-01), McAlister
patent: 3903696 (1975-09-01), Carman
patent: 4016719 (1977-04-01), Yavnai
patent: 4227587 (1980-10-01), Carman
patent: 4745745 (1988-05-01), Hagin
Gray Jr. Charles L.
Hellman Karl H.
Nguyen Hoang
The United States of America as represented by the Administrator
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