Power plants – Pressure fluid source and motor – Methods of operation
Patent
1998-09-21
1999-11-30
Nguyen, Hoang
Power plants
Pressure fluid source and motor
Methods of operation
60425, 60436, 60452, F16D 3100
Patent
active
059921455
ABSTRACT:
The method for preventing the interruption of tension during connection and disconnection of a first hydraulic motor to and from the power train of vehicles, in particular loaders, consists in that during the disconnection of the first hydraulic motor the high-pressure line is connected with the low-pressure line thereof, a flow distributor is readjusted so that the amount of oil fed to the first hydraulic motor is not increased, the pressure on a second hydraulic motor not to be disconnected being raised to a new value which remains constant during the disconnection, of the first hydraulic motor, a pump is readjusted to the new required (reduced) flow rate; and after adjustment of the pump to the new flow rate, the connection of the high-pressure line with the low-pressure line of the first hydraulic motor is eliminated; and during the connection of the hydraulic motor said method steps are carried out in reverse sequence.
REFERENCES:
patent: 2398265 (1946-04-01), Tyler
patent: 2996135 (1961-08-01), Grabow
patent: 3421389 (1969-01-01), Fauchere
patent: 5481873 (1996-01-01), Saruwatari et al.
patent: 5560204 (1996-10-01), Ishihama et al.
Gebhard Wolfgang
Mann Egon
Nguyen Hoang
ZF Friedrichshafen AG
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