Abstract:
A method for controlling gear-shifting processes of a powershift gearbox which can be coupled to a drive motor and has gear steps including two friction clutches and a plurality of clutches, and at least one gearbox actuator for actuating the gear steps. The method includes the following steps: the torque of the drive motor is received by the new friction clutch associated with the new gear step to be engaged; before the disengagement of the old gear step and before or during the torque reception, a pre-determined pre-tensioning force is applied to the clutch of the old gear step by the gearbox actuator; and the old gear step is disengaged when the motor torque and the clutch torque are balanced.
Abstract:
The invention relates to methods and devices for actuating a parking brake in a gearbox which is actuated in an automated manner, whereby gear changes are carried out by means of at least one electrically driven actuator, gear positions can be selected by means of a selector device, and the parking brake can be activated by means of the selector device when the vehicle is stationary or moving slowly. The invention also relates to a vehicle provided with an additional gearbox. The ignition key can only be removed, according to the inventive methods and devices, when the gearbox is in the P state and the additional gearbox is not in the N state. The invention further relates to a method and device, whereby the additional gearbox can only be shifted in the N state when the gearbox is not in the P state. Disclosed are also methods and a device for carrying out the same, by which means automated manual gearboxes, especially parallel gearboxes, are controlled in such a way that the vehicle can be safely parked and can set off in a reliable and comfortable manner.
Abstract:
The methods and devices for actuating a parking brake in a gearbox which is actuated in an automated manner, whereby gear changes are carried out by means of at least one electrically driven actuator, gear positions can be selected by means of a selector device, and the parking brake can be activated by means of the selector device when the vehicle is stationary or moving slowly. The invention also relates to a vehicle provided with an additional gearbox. The ignition key can only be removed, when the gearbox is in the P state and the additional gearbox is not in the N state. The further method and device, whereby the additional gearbox can only be shifted in the N state when the gearbox is not in the P state. The methods and a device for carrying out the same, by automated manual gearboxes, especially parallel gearboxes, are controlled in such a way that the vehicle can be safely parked and can set off in a reliable and comfortable manner.
Abstract:
The invention relates to a method for adapting the clutch characteristics in a twin-clutch system (PSG) which comprises in a first train a first clutch (A) and a first partial transmission (iA) mounted downstream thereof, and in a second train a second clutch (B) and a partial transmission (iB) mounted downstream thereof. The first and the second train can be linked on the input side with a driving engine (M) and on the output side with the wheels of a vehicle. The first clutch (A) is actuated by a first clutch actuating mechanism (KA) and the second clutch (B) is actuated by a second clutch actuating mechanism (KB). A zero adjustment of the hodometry of the first and/or second clutch actuating mechanism (KA; KB) is carried out according to a predetermined strategy subject to predetermined criteria.
Abstract:
A semiconductor component has a housing with a first main area and a second main area opposite to the first main area, which surrounds at least one semiconductor chip. The semiconductor chip has a first metallization layer on a first main side. A second main side of the semiconductor chip borders the second main area of the semiconductor component. The first metallization layer of the semiconductor chip is connected via electrical conductors to contacts that are likewise surrounded by the housing and border the second main area. The semiconductor chip furthermore has, on the second main side, a second metallization layer for carrying signals.
Abstract:
The present invention relates to a process for the prediction of cell culture performance data of sample cells, a process for the isolation of said cells and a device for the prediction of cell culture performance data of sample cells.
Abstract:
A drive train of a motor vehicle with an internal combustion engine, a torque converter and a transmission, wherein a separation clutch is provided between the internal combustion engine and the torque converter. In order to be able to perform a creeping process at a certain creeping velocity, the separation clutch is operated slipping. This way, the gearing of the startup process can be configured long, even when using a so-called hard torque converter, without having to tolerate a creeping velocity, which is too high.
Abstract:
A powershift transmission is proposed using two transmission paths, a friction clutch being assigned to each transmission path and the transmission paths being coupleable to an output shaft for torque transmission. The transmission has a device that detects the clutch torque transmitted by the friction clutch of the active transmission path, which is coupled to the output shaft, and, when the clutch torque falls below threshold value, initiates a disengagement of the active gear ratio.
Abstract:
The invention relates to a method for carrying out gear shifting in a twin-clutch gearbox comprising at least two gearbox input shafts which are respectively coupled to the engine by means of a clutch. According to the invention, after recognizing a desire to change gear, the clutch associated with the active torque transmitting gearbox input shaft is opened until the slip limit is reached and the engine torque is controlled according to the type of shifting in order to achieve the vehicle acceleration desired by the driver.
Abstract:
A double-clutch transmission having at least three and preferably four, hydraulic shift cylinders, and a control device to actuate the hydraulic shift cylinders. To improve the speed of operation when selecting a gear, the shift cylinders needed for gear shifting are actuated with the aid of at least three electromagnetically shiftable directional valves.