Hydrodynamic retarder

Details Hydrodynamic retarder Hydrodynamic retarder

1992-11-06

1993-11-16

Butler, Douglas C.

Brakes

Internal-resistance motion retarder

Using a rotary-type fluid damper

188274, B60T 1002, F16D 5700

Patent

active

052615138

ABSTRACT:
A hydrodynamic retarder for a vehicle has a primary part and a secondary part. The primary part has an input end connectable to the transmission output shaft of the vehicle and an output end connectable to the axle drive shaft. The fixed secondary part is, relative to the primary part, sealed against fluid discharge. A temperature sensor is provided for sensing the temperature of a working medium contained in the working circuit. A control system coordinated with a control valve is provided for adjusting by the cooling volume flow passed to the heat exchanger a specific temperature value of the working medium which has remained in the working circuit (set value). The set value of the temperature is so selected that it corresponds to a specific, desired braking moment.

REFERENCES:
patent: 4440272 (1984-04-01), Bieber
patent: 4474270 (1984-10-01), Vogelsang
patent: 4715481 (1987-12-01), Brosius
patent: 5101941 (1992-04-01), Long et al.

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