Abstract: A method for control of operation of shifting elements for an automatic transmission. Each cycle of the control for similar controls are configured to shift in an overlapping manner during operation of the automatic transmission.

Abstract: Described is a method for the control of a transmission of a motor vehicle, especially an automatic transmission, with hydraulically activated shifting elements. The shifting elements are shifted to engage or disengage by means of specified pressure pattern (pkab, pkzu) which have been input into an electronic control unit. In the said method, an applied pressure (pkab) on a disengaged shifting element, by the release of a force flow generated by a holding pressure (pkab-h) is reduced to a shift pressure (pkab-sd) and a transmission input speed of rotation (nt) experiences a change dependent upon the applied pressure (pkab) on a disengaged shifting element.

Abstract: Described is a process for the adaption of the shifting operation of an automatic transmission. Accordingly, a determination of adaption values is made relative to occurrences shifting quality in the operation of an automatic transmission, and said determined values are stored in the memory of an adaption storage and can be accessed for the control of shifting operations. The determined adaption values prior to the storage in the adaption memory are corrected in respect to a lifetime loading of the automatic transmission.

Abstract: A method for controlling a transmission of a motor vehicle, especially of an automatic transmission or of an automated manual mechanical transmission. The transmission has hydraulically actuatable shifting elements which, during gear shifts, are engaged or disengaged via pressure curves (p_kzu, p_kab) stored in an electronic control unit. For one gear shift are carried out at least one adaptation of the pressure curves (p_kzu, p_kab) of the shifting elements for compensation of tolerances of components and alternative to this one adaptation for compensation of influences determinant of shifting quality for different shifting strategies and/or shifting kinds, the filling parameters of the engaging shifting elements being determined during the gear shift itself or by preset test pressure curves outside the gear shift.

Abstract: A method of operating an automatic transmission of a motor vehicle having a hydraulic system, an electronic control unit connected with the hydraulic system and at least one engageable shifting element which is controlled according to a predetermined time-pressure profile. The method comprising the steps storing an associated profile representative of the operating point of the shifting element with regard to at least one of a filling ratio and a position of one piston of the shifting element. Thereafter, calculating an actual operating point of the shifting element via an algorithm stored in the electronic control unit. Finally, controlling the shifting element by the electronic control unit, via the hydraulic system, based on the calculated actual operating point of the shifting element.

Abstract: Within the scope of the method for acceleration of the torque breakdown of clutches in automatic transmissions, the follow-up of the hydraulic pressure and therewith the torque breakdown are accelerated by an over-compensation in the control.

Abstract: Described is a process for the adaption of the shifting operation of an automatic transmission. Accordingly, a determination of adaption values is made relative to occurrences affecting shifting quality in the operation of an automatic transmission, and said determined values are stored in the memory of an adaption storage and can be accessed for the control of shifting operations. The determined adaption values prior to the storage in the adaption memory are corrected in respect to a lifetime loading of the automatic transmission.

Abstract: Described is a method for the control of a transmission of a motor vehicle, especially an automatic transmission, with hydraulically activated shifting elements. The shifting elements are shifted to engage or disengage by means of specified pressure pattern (pkab, pkzu) which have been input into an electronic control unit. In the said method, an applied pressure (pkab) on a disengaged shifting element, by the release of a force flow generated by a holding pressure (pkab-h), is reduced to a shift pressure (pkab-sd) and a transmission input speed of rotation (nt) experiences a change dependent upon the applied pressure (pkab) on a disengaged shifting element.

Abstract: A method for controlling operation of shifting elements for an automatic transmission. According to the invention, each control cycle, for similar controls, is configured to shift in an overlapping manner during operation of the automatic transmission.

Abstract: In a process for controlling an automatic gearbox, an electronic gear box control (13) calculates in a first mode of operation a driving activity and determines the set gradient of the gear box input speed of rotation depending on the driving activity. In a second mode of operation, the electronic gear box control selects a special program among a plurality of special programs and determines the set gradient of the gear box input speed of rotation depending on the selected special program.

Abstract: Described is a method for controlling a transmission of a motor vehicle, especially of an automatic transmission or of an automated manual mechanical transmission. The transmission has hydraulically actuatable shifting elements which, during gear shifts, are engaged or disengaged via pressure curves (p_kzu, p_kab) stored in an electronic control unit. For one gear shift are carried out at least one adaptation of the pressure curves (p_kzu, p_kab) of the shifting elements for compensation of tolerances of components and alternative to this one adaptation for compensation of influences determinant of shifting quality for different shifting strategies and/or shifting kinds, the filling parameters of the engaging shifting elements being determined during the gear shift itself or by preset test pressure curves outside the gear shift.

Abstract: Within the scope of the method for acceleration of the torque breakdown of clutches in automatic transmissions, the follow-up of the hydraulic pressure and therewith the torque breakdown are accelerated by an over-compensation in the control.

Abstract: A method is described for operating an automatic transmission of a motor vehicle with a hydraulic system, an electronic control unit connected with the hydraulic system and at least one shifting element controllable via the hydraulic system via preset time-pressure profiles wherein the shifting element is engaged or disengaged via the time-pressure profiles. According to the invention, depending on a time-pressure profile basis of a previous control of the shifting element and on a coordinated profile representative of the operating point of the shifting element regarding filling ratio and/or a position of a piston of the shifting element, via an algorithm stored in the electronic control unit, an actual operating point of the shifting element observed at the moment is determined after which synthetically results a control of the shifting element.

Abstract: The invention relates to a method for increasing the spontaneity of automatic gear boxes with overlapping gear shifts. The overlapping gear shifts consist of three phases. Upshifting from a first gear ratio to a second gear ratio is aborted and downshifting to a first gear ratio occurs if an abort criterion is detected. The abort criterion is validated if a request for downshifting is made by the driver and detected before the third overlapping shift phase begins.

Abstract: A method for increasing the spontaneity is proposed for an automatic transmission, the gear shifts of which are carried out as overlapping gear shifts. Here an upshift from a first to a second gear is not completely terminated and a change back from an upshift to the first gear is carried out when an abort criterion is detected.

Abstract: For an electro-hydraulically controlled automatic transmission (2) in which shifts are performed by overlapping, a method is proposed for increasing the spontaneity, in which a variable hold time is introduced for a disengaging clutch. This variable hold time is a function of the rotational speed differential of a transmission input speed (nT) and the temperature of the hydraulic fluid (.THETA.).

Abstract: A method is proposed for increasing the spontaneity of an automatic transmission where the gear shifts are carried out as overlapping gears. Here an upshift from a first to a second reduction step is not completely terminated and a change over to a downshift is carried out when an abort criterion is detected.