Daimler Chrysler Ag

Daimler-benz Ag

Hartmut Weckenmann

Thomas Kreischer

Wolfgang Strauss

Ferry Durschmidt

Eberhard Leider

Michael Groene

Michael Gr&ouml;ne

Harmut Kolb

In a method for setting torque in the operation of a motor vehicle, especially in the case of a small engine torque change in the lower to medium load range, the driver-selected torque is magnified dynamically in time, and the enhancement component is then correspondingly reduced down to an enhancement component of zero as the actual value of the torque approaches the driver-selected torque. An increase in responsiveness and a better response behavior are achieved in response to small accelerator pedal movements.

Method for magnifying torque during the operation of a motor vehicle

In a method for magnifying torque during driveaway of a motor vehicle using a clutch, the driver-selected torque is dynamically magnified in time, and the enhancement component then is reduced down to 0 at increasing vehicle speed as a function of the latter. The driveaway behavior of a vehicle may be perceptibly improved, and an unintended shutoff of the internal combustion engine may be largely prevented when the accelerator pedal is operated too weakly or the clutch is engaged too fast.

Method for magnifying torque at driveway of a motor vehicle using a clutch

Engine speed and/or vehicle velocity limitation apparatus of engine-driven motor vehicles, wherein a controller defines, as a function of the difference between an actual speed value or actual velocity value as controlled variable, on the one hand, and a speed limit value or velocity limit value or a speed limit function or velocity limit function, on the other hand, a torque setpoint for the engine of the motor vehicle as the manipulated variable. As a result, the combustion processes occur at the stoichiometric ratio even during the limiting operation, and the elimination of torque surges results in a considerable increase in drivability for the driver.

Apparatus for speed limitation of engines and/or for velocity limitation of engine-driven motor vehicles

An internal combustion engine has a catalytic converter in its exhaust gas path. In the catalytic converter, two exhaust gas emission measuring probes are provided spatially separated from one another. The phase shift between the output signals of these two measuring probes is used as a measure of the aging of the catalytic converter.

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Stuttgart, Germany

Hartmut Weckenmann