The hydrodynamic retarder for a vehicle has a reservoir (4) for working medium which is connected to a pneumatic system (12). This is fitted with a hydraulically controlled valve (3) and a 3/2-way valve (5) is fitted upstream of it to assist refilling of t...

The hydrodynamic retarder for a motor vehicle has a rotor and stator blade wheel, wherein at least one blade (1) of the stator (9) and/or the rotor (5) consists of two segments, wherein the first segment (2) is directly connected to the stator (4) and/or t...

A hydrodynamic retarder for a motor vehicle comprises a control circuit (1) having a hydraulic pump (11), heat exchanger (3), valve (4) and controller (2).The pump output volume is adjustable independently of the vehicle speed, drive shaft rotation or reta...

The brake system has a hydrodynamic retarder (20) an a pipe system (6) for engine coolant and retarder working medium. The pipe system contains a continuously adjustable retarder control valve (28), behind the retarder in flow direction of the working medi...