Abstract: The invention relates to a method for the automatic starting and stopping of an internal combustion engine. Release of a stop mode for the internal combustion engine is enabled depending on a time period that depends on the temperature difference between the temperature prevailing in the interior of a motor vehicle and the desired temperature set by the driver.

Abstract: The invention relates to a method for the automatic starting and stopping of an internal combustion engine. Release of a stop mode for the internal combustion engine is enabled depending on a time period that depends on the temperature difference between the temperature prevailing in the interior of a motor vehicle and the desired temperature set by the driver.

Abstract: A drive train controller of a motor vehicle has an engine controller for controlling the variables that influence the torque of the engine. The drive train controller also includes a transmission controller for controlling the gear shift operations of the automatic transmission. The transmission controller includes a detection circuit for determining the respective driving situation of the motor vehicle. The transmission controller changes the transmission ratio in a manner that is adaptively matched to the dynamics of the determined driving situation and/or the driver characteristics.

Abstract: A drive train controller of a motor vehicle has an engine controller for controlling the variables that influence the torque of the engine. The drive train controller also includes a transmission controller for controlling the gear shift operations of the automatic transmission. The transmission controller includes a detection circuit for determining the respective driving situation of the motor vehicle. The transmission controller changes the transmission ratio in a manner that is adaptively matched to the dynamics of the determined driving situation and/or the driver characteristics.

Abstract: A gear ratio of an automatic transmission is set by a fuzzy logic circuit which evaluates a braking torque desired by a motor vehicle driver and which carries out a change in the transmission gear ratio in order to support the braking torque of a brake system. After changing the transmission gear ratio, the braking torque desired by the driver is again evaluated and, in accordance with the evaluation result, the transmission gear ratio is, if appropriate, again adjusted in view of the desired braking torque. A drive train control system is also provided.

Abstract: A gear ratio of an automatic transmission is set by a fuzzy logic circuit which evaluates a braking torque desired by a motor vehicle driver and which carries out a change in the transmission gear ratio in order to support the braking torque of a brake system. After changing the transmission gear ratio, the braking torque desired by the driver is again evaluated and, in accordance with the evaluation result, the transmission gear ratio is, if appropriate, again adjusted in view of the desired braking torque. A drive train control system is also provided.

Abstract: The device contains an electronic control system, which, in an automatic mode, automatically determines the transmission ratio in dependence of an operating condition, and contains selector devices, which, in the automatic mode, determine the driving stages of the transmission control and, in a manual mode, change the transmission ratio in steps. After a manual selection of the transmission ratio, driving and operating situations in which the automatic mode of the control system is desirable are detected and, if such a situation is detected, a return circuit causes the electronic control system to return to the automatic mode.

Abstract: A controller for a motor vehicle device, such as a transmission. The transmission ratio is automatically controlled in dependence on at least the accelerator pedal position and the driving speed, using stored characteristic maps. A fuzzy logic circuit has at least one rule base. Various signals, which characterize driving states and the load state of the motor vehicle, are evaluated by the fuzzy logic circuit and control signals are generated in response. The control signals define the transmission ratio. At a predefined dynamic driving state, an additional control signal is generated by the fuzzy logic circuit, by means of which signal a change to the transmission ratio is carried out. That change is independent of the respective characteristic map. Dynamic driving states of this type are, for example, the occurrence of an impermissible wheel brake slip or driving down relatively long downhill gradients.

Abstract: A circuit configuration for evaluating signals from a yaw rate sensor is used in particular for movement stabilization in a motor vehicle. There is provided a controller which receives the signals from the yaw rate sensor and from further sensors. The further sensors detect motion state dependent variables, such as for example wheel speed, steering wheel angle, lateral acceleration and longitudinal acceleration. The controller calculates from one or more of these further sensors a reference yaw rate. The reference yaw rate is compared with the yaw rate measured by the yaw rate sensor. The plausibility of the yaw rate sensor signal is also checked, taking account of the motion state. If the difference between the measured yaw rate and the reference yaw rate determined in the plausibility check is above a predetermined threshold value, then the yaw rate sensor is identified as being faulty.

Abstract: A method and a circuit configuration for compensating for signal errors of a yaw velocity sensor used in regulating driving stability of a motor vehicle include ascertaining a driving state in which an offset of a yaw velocity sensor is unequivocally determinable from electrical signals of at least one of a steering wheel angle sensor, wheel speed sensors and a transverse acceleration sensor, ascertaining the offset from the signals of one of the sensors in the driving state, and calculating a yaw velocity from the electrical signals of at least one of the sensors. Driving states are ascertained at a beginning and at an end of a predetermined time interval in which the yaw velocities of the motor vehicle are unequivocally determinable and differ from one another, the yaw velocities are calculated and associated signal voltages of the yaw velocity sensor are fixed at those instants. A sensitivity is calculated from the calculated yaw velocities and the associated signal voltages of the yaw velocity sensor.