Voith Turbo Gmbh Co. Kg

J&uuml;rgen Friedrich

Klaus Vogelsang

Peter Heilinger

Peter Rose

Karl Mondorf

A drive unit includes a motor, a hydrodynamic retarder, at least one pump, at least one feed line for feeding operating medium to the retarder, and at least one bypass line which conveys operating medium past the retarder. A device for directing the flow of operating medium is arranged upstream of the retarder in the direction of flow. The device can feed the operating medium through the retarder via the feed line, feed the operating medium past the retarder via a bypass line, or divide the total flow of operating medium into at least two predetermined parts. A first predetermined part of the operating medium is fed through the retarder via the feed line. A second predetermined part of the operating medium is conveyed past the retarder via the bypass line.

Drive unit including a motor and a retarder

The invention relates to a method and a device for increasing the use of the braking moment of a retarder in an automobile. According to this method, the heat produced by the retarder during braking is dissipated using a coolant. The method is characterized in that at least one auxiliary consumer and/or at least one of the following devices of the cooling system&mdash;a connected fan, a connected thermostat, a coolant pump, a bypass-valve&mdash;is controlled in dependence on the mode of the operation of the retarder.

Method and device for increasing the use of the braking moment of a retarder in an automobile

A drive unit includes a hydrodynamic retarder having a rotor paddle wheel, a stator paddle wheel, and a housing surrounding the rotor and stator wheels. The unit includes a coolant cycle system for an internal combustion engine, the coolant for this coolant cycle also being a working medium of the retarder. The drive unit further includes a working medium container for the coolant which is connected to the coolant cycle system. A connecting pipe is disposed between the working medium container and a hydrodynamic center of the retarder. A valve is disposed in the connecting pipe.

Growing community of inventors

Crailsheim, Germany

Jürgen Friedrich

Growing community of inventors

Crailsheim, Germany

J&uuml;rgen Friedrich

Jürgen Friedrich