摘要:
A torque transfer system of a motor vehicle has a clutch, a transmission, a control device, and a traction load detecting device. The traction load is the variable resistance that a vehicle has to overcome to start or to keep moving, e.g., going uphill or downhill, with a heavy or light load, with or without a trailer or a roof load. The control device controls the torque transfer system, in particular the clutch, dependent on input signals received from the traction load detecting device.
摘要:
In a method and apparatus for diagnosing a malfunction in a clutch actuator of a motor vehicle, the actual position of the clutch actuator is measured by a position sensor. Simultaneously, an estimated position of the clutch actuator is calculated by an emulation unit that emulates the function of the clutch actuator. Malfunctions of the clutch-actuator are diagnosed by comparing the actual, measured position to the estimated position.
摘要:
The invention relates to a method of compensating for the influence of changes of speed of a rotary component of an adjustable clutch upon the control torque characteristic curve of the clutch in the power train of a motor vehicle wherein the clutch operates between the rotary output element of the engine or another prime mover and a rotary input element of a change-speed transmission. The method includes the steps of monitoring the rotational speed of the clutch and varying the required positions of a mobile adjusting member for the clutch as a function of changes of the monitored rotational speed. The invention also relates to the power train wherein the influence of changes of rotational speed of the aforesaid component upon the characteristic curve can be varied in accordance with the novel method.
摘要:
A method of regulating the position of a clutch actuator in a vehicle employs the concept of adapting the servo-loop parameters of a position controller of the clutch to different operating conditions of the vehicle, as well as the concept of applying and continuously adapting a bias current of the actuator motor in order to avoid or minimize the incidence of a hunting or after-regulation behavior of the control loop and to thereby minimize the energy consumption of the actuator motor.
摘要:
A transmission system including a shift mechanism for operating and controlling the transmission system. To automatically detect geometric characteristic values of the transmission system or of the shifting device a selector motor and a shift motor actuate a selector finger that is displaceably mounted in a selection-shift-passageway layout. Starting from an initial position whose coordinates within the selection-shift-passageway layout are unknown, the selector finger is displaced in the directions of shifting and in the directions of selection in order to detect paths of movement in the direction of selection or shifting. The selector finger is repeatedly displaced to establish the maximum paths of movement until the predetermined transmission geometric characteristic values are completely detected. Also disclosed are a control device for controlling a transmission system that includes a shift mechanism, and a method for controlling such a transmission system.
摘要:
A method of controlling an automated clutch of a vehicle includes the step of adapting a characteristic curve of the clutch through an electronic clutch management system. The adaptation is performed under at least one set of operating conditions that are represented by an operating point.
摘要:
The comfort level of a gear shift in a motor vehicle with an automated gear-shifting transmission is determined by shift parameters which are dependent on driving parameters and on a shift program mode that is either driver-selected or automatically determined. The shift program mode is identified through a characteristic parameter which can vary in a range of parameter values corresponding to a range of shift program modes. The method has the steps of: detecting current values of the driving parameters; detecting a current value of the characteristic parameter; determining respective minimum and maximum values that each of said shift parameters can assume within the range of characteristic parameter values as a function of the current driving parameter values; calculating actual shift parameter values as intermediate values between said maximum and minimum values for each of said shift parameters based on said current value of the characteristic parameter; and performing the gear shift with the actual shift parameter values.
摘要:
In a method for controlling an automated clutch and/or an automated transmission in a motor vehicle with an electronic clutch management system, a target value for the clutch torque is determined as an output quantity of a start-up function dependent on suitable input quantities.
摘要:
The method is designed for a motor vehicle equipped with wheel rpm sensors and means to determine whether the wheels are either rolling normally or locked or spinning without adhesion. The method employs plausibility routines to determine whether an abnormal wheel rpm sensor signal is due to locking or spinning of the wheel or whether it is due to a sensor failure. In case that an abnormal condition is detected, an alternate strategy is initialized to determine wheel rpm rates and perform control functions that are based on wheel rpm rates.
摘要:
A method of keeping track of the current operating position of an actuator in an automated gear-shift transmission has the following steps: monitoring the level of energy supplied by an energy source to the actuator; comparing the energy level to a minimum energy level required by the actuator; and if the energy level is lower than the required minimum, saving the current actuator position in memory for retrieval at a later time.