Procedure for controlling gear changes in transmissions for vehicle

Abstract

The invention refers to a procedure for controlling gear changes in transmissions for vehicles using an electronic control unit, which includes an automatic program and a manual program, where the automatic program performs a gear change as a function of recorded vehicle parameters through the electronic transmission control unit, while, when the manual program is selected by the driver, the gear change is performed by the driver corresponding to input from the driver to at least one shift device, and where a return function is envisaged, through which a return from the manual program to the automatic program can be carried out by recording an accelerator pedal setting (x Gsp ), where at least one of the following steps is performed: a) Check whether a gear change has been requested by input from the driver to at least one shift device, where if this is the case step b) is applied, while otherwise a gear change continues to be performed corresponding to the automatic program; b) Comparison of the accelerator pedal setting (x Gsp ) to a threshold, where a lower accelerator pedal setting value (x Gsp ) results in the manual program being selected and the return function being activated, and step c) is applied, while if there is a higher accelerator pedal setting (x Gsp ) only the manual program is selected, and c) Continuous comparison of the accelerator pedal setting (x Gsp ) with the limit, where in the case of a higher accelerator pedal setting value (x Gsp ), the automatic program is selected, while otherwise the manual program continues to be selected and the return function remains active. Furthermore, the invention refers to automatic transmissions that can be operated according to the procedure and to a computer program product for executing the individual steps.

Description

technical field [0001] The present invention relates to a method for controlling gear shifting in a gearbox of a vehicle using an electronic control unit, said method comprising an automatic program and a manual program, wherein the automatic program performs gear shifting through the electronic control unit according to recorded vehicle parameters, and when the driver selects In a manual program, a gear change is performed by the driver in response to an input from the driver to at least one shifting device, and wherein a return function is considered, by which a return from a manual program to an automatic program is performed by monitoring the accelerator pedal setting. Furthermore, the invention relates to a gearbox of a vehicle operable according to said method and a computer program product for carrying out the individual steps. Background technique [0002] With automatic transmissions and automated manual transmissions of vehicles, gear changes are usually carried ou...

AI Technical Summary

Problems solved by technology

[0005] However, there are driving situations in which the driver needs to downshift in order to support the vehicle's deceleration, for example when driving downhill, in particular through the braking torque of the engine

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