Abstract: The present invention relates to a method for resolving a tooth-on-tooth position of a positive-locking shifting element of an automated manual transmission, in which gear steps of the automated manual transmission are changed by means of a pressure-medium-actuated shift actuator. If, during a change of a gear step of the automated manual transmission, a tooth-on-tooth position occurs at the interlocking shifting element, then the control of the pressure-medium-actuated shift actuator is varied in such manner as to resolve the tooth-on-tooth position. A control unit for carrying out the method is also disclosed.

Abstract: A method of controlling a pneumatic actuator for actuation of a pneumatically actuated device. The actuator comprises a piston and a pneumatic cylinder, the piston is arranged to move axially within the pneumatic cylinder. The piston is moved as a function of a pressure in a pressure chamber of the pneumatic cylinder, and the pressure in the pressure chamber is adjusted by a control unit which controls at least a valve and/or a pressure regulator and/or a pressure generating device. A pilot control component, for the control, is determined as a function of at least a sliding friction force and/or at least a static friction force of the pneumatic actuator.

Abstract: A method of controlling and regulating a transmission brake which, for the purpose of synchronization, determines a target rotational speed of a shaft to be synchronized on the basis of an actual rotational speed of a transmission shaft, and controls a transmission brake such that the determined target rotational speed is set for the shaft that is to be synchronized. The transmission brake also carries out additional functions. These functions require no, or only minimal, additional hardware complexity in a cost-neutral way, but considerably increase the functional and practical value of the transmission brake. The comfort and speed of shifting operations, the protection or, as the case may be, the detection of error states in sensors, a clutch, a main clutch or a motor control are improved, and undesirable transmission states avoided. It is also possible to account for and influence other conditions, such as the operation of ancillary devices.

Abstract: A method of actuating an assembly of a transmission, with which are associated a plurality of actuators with whose help the assembly can in principle be actuated, such that out of the actuators available in principle for actuation, a control unit selects at least one actuator for the actual actuation and activates the selected actuator with an output signal in such manner that a status parameter of the actuated assembly corresponds to or follows a control-side nominal value, such that out of the actuators available in principle for actuating the assembly, the control unit selects at least one actuator for the actual actuation of the assembly in such manner that, for all the actuators available in principle for actuating the assembly over the operating life of the transmission, the extent of their utilization is approximately uniform.

Abstract: A method of controlling a pneumatic actuator for actuation of a pneumatically actuated device. The actuator comprises a piston and a pneumatic cylinder, the piston is arranged to move axially within the pneumatic cylinder. The piston is moved as a function of a pressure in a pressure chamber of the pneumatic cylinder, and the pressure in the pressure chamber is adjusted by a control unit which controls at least a valve and/or a pressure regulator and/or a pressure generating device. A pilot control component, for the control, is determined as a function of at least a sliding friction force and/or at least a static friction force of the pneumatic actuator.

Abstract: A method of controlling and regulating a transmission brake which, for the purpose of synchronization, determines a target rotational speed of a shaft to be synchronized on the basis of an actual rotational speed of a transmission shaft, and controls a transmission brake such that the determined target rotational speed is set for the shaft that is to be synchronized. The transmission brake also carries out additional functions. These functions require no, or only minimal, additional hardware complexity in a cost-neutral way, but considerably increase the functional and practical value of the transmission brake. The comfort and speed of shifting operations, the protection or, as the case may be, the detection of error states in sensors, a clutch, a main clutch or a motor control are improved, and undesirable transmission states avoided. It is also possible to account for and influence other conditions, such as the operation of ancillary devices.

Abstract: A device and a method for control of an automatic transmission (1) in a vehicle having one control unit (2), which can receive signals produced by a transmission gearshift lever (7), and/or a first transmission control (8). The signals of the first transmission control are bridgeable so that the automatic transmission can be manually operated. In order to make it possible to efficiently operate the vehicle with low fuel consumption and great flexibility of the driver at the moment, manual operation of the automatic transmission is possible only when the vehicle is at speed (v) lower than a predetermined speed limit.

Abstract: A method of monitoring a hydraulic or pneumatic transmission control system, which comprises a pressure supply unit with a conduit directing a pressure medium under a supply pressure, and an actuating member for a clutch control element of a friction clutch. The actuating member has a pressure space which can be connected by a clutch control valve to the conduit, and in which the supply pressure is determined by a pressure sensor that can be connected to the conduit. The method includes the steps of determining the supply pressure by the pressure sensor, given that briefly opening the clutch control valve produces a pressure increase and/or a pressure gradient of the control pressure in the pressure space, and the currently existing supply pressure can be calculated from the control pressure, the pressure increase and/or the pressure gradient.

Abstract: A method of actuating an assembly of a transmission, with which are associated a plurality of actuators with whose help the assembly can in principle be actuated, such that out of the actuators available in principle for actuation, a control unit selects at least one actuator for the actual actuation and activates the selected actuator with an output signal in such manner that a status parameter of the actuated assembly corresponds to or follows a control-side nominal value, such that out of the actuators available in principle for actuating the assembly, the control unit selects at least one actuator for the actual actuation of the assembly in such manner that, for all the actuators available in principle for actuating the assembly over the operating life of the transmission, the extent of their utilization is approximately uniform.

Abstract: A method for monitoring a starting process of a motor vehicle, having a drive train including a driving motor, a torque transfer system and a transmission, a controller and an actuator, which is controlled by the controller for actuating the torque transfer system. Upon initiation of the starting process, if it is observed that the motor vehicle does not start, despite a clear starting request, appropriate measures for starting the motor vehicle are initiated.

Abstract: A method and apparatus for cycling a neutral switch of an automated mechanical transmission includes software which, either independently or by operator command through a shift actuator having side-to-side motion capability and sensors, controls a select piston and cylinder assembly to provide shift rail motion along a transverse axis of the transmission which simulates operator commanded motion of a shift rail of a conventional (manual) transmission as the operator checks for neutral. Such activity may release a malfunctioning neutral switch thereby providing a proper neutral indication to associated transmission and engine components to, for example, permit starting of the engine.

Abstract: A method for the control of an automatic transmission during a change of ratio procedure, wherein the synchronous speed of rotation (SD) for the new transmission gear-stage lies under the no-load speed of rotation (LD) of a drive motor which can be connected to the transmission and wherein a gear-stage engagement actuator for the engagement of a new transmission gear-stage is then activated, when the transmission input speed of rotation (GED) has reached a predetermined speed of rotation window (F), which window also encompasses the synchronous speed of rotation (SD). In order to make such a shifting method more comfortable than previously, the invented method deviates from that procedure based on downshifting, which has been customary up to this time and rather proceeds in a upshifting mode.

Abstract: A method of monitoring a hydraulic or pneumatic transmission control system, which comprises a pressure supply unit with a conduit directing a pressure medium under a supply pressure, and an actuating member for a clutch control element of a friction clutch. The actuating member has a pressure space which can be connected by a clutch control valve to the conduit, and in which the supply pressure is determined by a pressure sensor that can be connected to the conduit. The method includes the steps of determining the supply pressure by the pressure sensor, given that briefly opening the clutch control valve produces a pressure increase and/or a pressure gradient of the control pressure in the pressure space, and the currently existing supply pressure can be calculated from the control pressure, the pressure increase and/or the pressure gradient.

Abstract: A method for establishing malfunctions of components of a motor vehicle power train as well as the reaction to the same. The power train has a drive motor and an automatic transmission with respectively allocated control devices, setting apparatus and sensors, and the transmission input shaft is allocated a torque sensor for recording the transmission input shaft. During operation of the motor vehicle, the functions of the control devices, the operating elements, the sensors and their data transmission apparatus as well as the measured values of the transmission input torque are recorded and checked for signs of malfunction. After recognizing such a malfunction, operations are conducted by means of which the motor vehicle can be further operated in an emergency type of operation or with the aid of which the driving operation can be safely ended.

Abstract: The invention relates to a method for monitoring a starting process of a motor vehicle, having a drive train, with a driving motor, a torque transfer system, and a transmission, a controller, and an actuator controlled by the controller for actuating the torque transfer system. If a starting observer detects that, despite a clear starting request, no starting occurs, appropriate measures supporting the starting of the motor vehicle are thereupon initiated.

Abstract: A method for the control of an automatic transmission during a change of ratio procedure, wherein the synchronous speed of rotation (SD) for the new transmission gear-stage lies under the no-load speed of rotation (LD) of a drive motor which can be connected to the transmission and wherein a gear-stage engagement actuator for the engagement of a new transmission gear-stage is then activated, when the transmission input speed of rotation (GED) has reached a predetermined speed of rotation window (F), which window also encompasses the synchronous speed of rotation (SD). In order to make such a shifting method more comfortable than previously, the invented method deviates from that procedure based on downshifting, which has been customary up to this time and rather proceeds in a upshifting mode.

Abstract: A method and apparatus for cycling a neutral switch of an automated mechanical transmission includes software which, either independently or by operator command through a shift actuator having side-to-side motion capability and sensors, controls a select piston and cylinder assembly to provide shift rail motion along a transverse axis of the transmission which simulates operator commanded motion of a shift rail of a conventional (manual) transmission as the operator checks for neutral. Such activity may release a malfunctioning neutral switch thereby providing a proper neutral indication to associated transmission and engine components to, for example, permit starting of the engine.

Abstract: The invention relates to a device and a method for control of an automatic transmission (1) in a vehicle having one control unit (2) by which can be received signals produced by a transmission selector lever (7) and/or a first transmission control (8), the signals of the first transmission control (8) being bridgeable so that the automatic transmission (1) can be manually operated. In order to make possible operating the vehicle with low fuel consumption and great flexibility of the driver at the moment, it is provided that a manual operation of the automatic transmission (1) be possible only when the vehicle has a speed (v) lower than a predetermined speed limit.

Abstract: A control procedure for an automatic transmission, wherein, via a gear range shifter, a change of the gear range both between the forward travel gear range and the reverse travel gear range and between a fast gear mode and a creeper gear mode can be put into action. A control apparatus selects a transmission gear to be engaged, dependent on data, input by an operator with the aid of a gear range shifter for the manual choice of a driving gear area, whereby the gear range shifter possesses at least a D-shifting position for the selection of a forward travel gear range, an N-position for the selection of an idle running position of the automatic transmission and an R-position for the selection of a reverse travel gear range, and that the automatic transmission can be driven in a fast gear mode as well as in a creeper gear mode.

Abstract: A method and a device with which disturbing vibrations are diminished at least in the height of their amplitude. A control and regulating device (24) and suitable sensors (34, 36, 41) activate a device (7, 11, 15, 23, 29, 30) when previously established limiting values are exceeded with regard to procedure, with which components of the motor vehicle are influenced such that the disturbing vibrations are damped or compensated.