Daimler Chrysler Ag

Thomas Kreischer

Hartmut Weckenmann

Eberhard Leider

Michael Groene

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.

Growing community of inventors

Waiblingen, Germany

Thomas Kreischer