Hydrodynamic retarder

Details Hydrodynamic retarder Hydrodynamic retarder

1990-12-10

1992-02-25

Oberleitner, Robert J.

Brakes

Internal-resistance motion retarder

Using a rotary-type fluid damper

188290, 188294, F16D 5702

Patent

active

050905236

ABSTRACT:
The invention concerns a hydrodynamic retarder with a cooling circuit for the working fluid, which cooling circuit is divided into two partial flows of different cross sectional areas, between the outlet and inlet to the retarder, wherein both partial flows are separately cooled in a common heat exchanger. This assures that a small amount of working fluid will flow through the retarder after completion of the braking process, causing an aftercooling. Moreover, this assures that the retarder is more swiftly filled after a braking instruction, and a valve combination is employed for that purpose at the entrance to the retarder. Spring-loaded check valves in the line for the larger partial flow ensure a dependable circulation of the working fluid to and from the receiver.

REFERENCES:
patent: 3989127 (1976-11-01), Staudenmaier et al.
patent: 4175647 (1979-11-01), Hanke
patent: 4432442 (1984-02-01), Vogelsang
patent: 4773513 (1988-09-01), Herrmann et al.

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