Method For Influencing an Automatic Gearbox, Taking Into Consideration the Tractional Resistance
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Abstract
The invention relates to a method for influencing an automated transmission taking into consideration the tractional resistance with which the magnitude of an external tractional resistance can be determined easily and without need of data exchange with devices outside the vehicle, the same as independently of a digitalized road map of the area in which the vehicle drives and with low construction complexity.
In particular a topographical information of the area in which the vehicle drives is obtained which allows a tractional resistance detection unit, optionally in combination with additional influencing variables in relation to the external tractional resistance, to act upon the controller of an automated transmission so that by shifting the gear change points or selecting a suitable program, reduces both the fuel consumption and the pollutant and noise emissions. Moreover, the driving comfort and the climbing capacity of the vehicle are improved by preventing, starting from a specific threshold, the switching of the automated transmission to neutral position and in the full load range of the prime mover than allows the witching to a higher gear if in the gear a minimum acceleration capacity of the vehicle is guaranteed.
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Citations
33 Claims
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1-16. -16. (canceled)
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17. A method of influencing an automated transmission of a motor vehicle having a tractional resistance detection unit which determines an external tractional resistance of the vehicle and, depending on an external tractional resistance, influences a shift program of the automated transmission by at least one of activation, adaptation and variation, the method comprising the steps of:
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reading data, via the tractional resistance detection unit, containing at least information about a torque of a drivetrain, an appertaining rotational speed and an acceleration of the vehicle and, via read data, an input torque, reaching a conclusion about the external tractional resistance of the vehicle, and on a basis one of actual and statistically prepared data about the external tractional resistance of the vehicle, influencing the shift program of the automated transmission by the at least one of activation, adaptation and variation. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A method controlling an automated transmission of a motor vehicle having a tractional resistance detection unit, the method comprising the steps of:
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receiving data in the tractional resistance detection unit concerning at least one of torque of a drivetrain, a rotational speed of the drivetrain and acceleration of the vehicle and data about input torque of the drivetrain; determining an external tractional resistance of the vehicle; and at least one of activating, adapting and varying a shift program of the automated transmission on a basis of one of actual prepared data and statistically prepared data about external tractional resistance of the vehicle, to influence the shift program.
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Specification