Daimler Chrysler Ag

Guenter Fleckenstein

Helmut Daudel

Hermann Hiereth

Roland Bischoff

An exhaust gas turbocharger with a variable turbine geometry can be adjusted in the fired engine operation by an automatic turbine controller to a definable desired supercharging pressure in the intake port. In the braking operation, the turbocharger can be adjusted by an engine braking system with an automatic braking controller as a function of operating parameters of the internal-combustion engine into a ram position which increases the pressure in the exhaust gas system. A change-over element is provided for the change-over between the engine braking system and the automatic turbine controller. To make the exhaust gas turbocharger variable, the automatic turbine controller and the engine braking system each have a modular design and a separate construction. A manual braking signal to the engine braking system, can be generated in a manually adjustable brake operating device. A change-over element is provided for changing over between the automatic braking controller and the brake operating device.

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Esslingen, Germany

Guenter Fleckenstein