Method and device for operating especially an automatic or automated gearbox comprising a parking brake and a runaway locking mechanism

Methods and devices for actuating a parking brake in a gearbox which is actuated in an automated manner, whereby gear changes are carried out using at least one electrically driven actuator, gear positions can be selected by using a selector device, and the parking brake can be activated by using the selector device when the vehicle is stationary or moving slowly. A vehicle provided with an additional gearbox. An ignition key can only be removed, when the gearbox is in a P state and the additional gearbox is not in the N state. A 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. Further methods and a device in which automated manual gearboxes, especially parallel gearboxes, are controlled in such a way that the vehicle can be safely parked.

Method for controlling an automated shift gearbox

A method for controlling a drivetrain in a motor vehicle which has an internal combustion engine with a crankshaft, an automated gearbox with engagable and disengagable gears and a gearbox input shaft and a gearbox output shaft which drives drive wheels, a friction clutch which connects the crankshaft and the gearbox input shaft in a separable manner and is operated in an automated fashion, and a control unit for controlling the drivetrain. For driving comfort, before the vehicle comes to a stop, a starting gear is engaged in an overrun mode such that, after opening the friction clutch, a synchronization of gearbox input and output shaft rotational speed of the starting gear is initiated at a gearbox input shaft rotational speed which is higher than a target rotational speed of the gearbox input shaft yielded by the transmission ratio of the starting gear between the gearbox input and output shaft.

Determining an engine torque error during an engine torque intervention

A method for determining an error in engine torque, wherein at least before and after a predetermined change in the engine torque the change in engine speed is registered, and this is compared with the engine torque before and after the change in the engine torque.

Method and device for adapting the control of the clutches of a double clutch transmission

A method of adapting control of clutches of a double clutch transmission, including: during a shifting process, controlling torque transmittable by an opening clutch and torque transmittable by a closing clutch according to nominal curves; during a shifting process, determining a difference between a nominal value and an actual value; and adapting a nominal curve of at least one of the clutches for a following shifting process by reducing a difference between the nominal value and the actual value.

Method and device for adapting the control of the clutches of a double clutch transmission

A method of adapting control of clutches of a double clutch transmission, including: during a shifting process, controlling torque transmittable by an opening clutch and torque transmittable by a closing clutch according to nominal curves; during a shifting process, determining a difference between a nominal value and an actual value; and adapting a nominal curve of at least one of the clutches for a following shifting process by reducing a difference between the nominal value and the actual value.

Method for controlling a clutch

A method is described for controlling a clutch which is located between a drive motor and an automated manual transmission of a drive train. In this method, vibrations during load alternations are reduced by controlling the clutch so that a free-wheeling function is implemented during an engine braking mode.

Determining an engine torque error during an engine torque intervention

A method for determining an error in engine torque, wherein at least before and after a predetermined change in the engine torque the change in engine speed is registered, and this is compared with the engine torque before and after the change in the engine torque.

Method for controlling a clutch

A method is described for controlling a clutch which is located between a drive motor and an automated manual transmission of a drive train. In this method, vibrations during load alternations are reduced by controlling the clutch so that a free-wheeling function is implemented during an engine braking mode.

Method and Warning Device for Graphically Processing an Image of a Camera

The invention relates to a method for graphically processing an image of the surroundings of a motor vehicle, the image being been provided by a camera device. It is known fact that said images are processed in such a way that the danger potential for the motor vehicle posed by an obstacle in the surroundings is visualized optically by or highlighted for the driver. According to the invention, the image provided by the camera device is processed taking into account the position of the obstacle in the image in order to highlight said danger potential in an even clearer manner for the driver. To this end, the actual position of the obstacle in the surroundings of the motor vehicle is initially determined. The position of the obstacle in the image corresponding to the actual position of the obstacle in the surroundings is subsequently determined.

Method for controlling an automated shift gearbox

A method for controlling a drivetrain in a motor vehicle which has an internal combustion engine with a crankshaft, an automated gearbox with engagable and disengagable gears and a gearbox input shaft and a gearbox output shaft which drives drive wheels, a friction clutch which connects the crankshaft and the gearbox input shaft in a separable manner and is operated in an automated fashion, and a control unit for controlling the drivetrain. For driving comfort, before the vehicle comes to a stop, a starting gear is engaged in an overrun mode such that, after opening the friction clutch, a synchronization of gearbox input and output shaft rotational speed of the starting gear is initiated at a gearbox input shaft rotational speed which is higher than a target rotational speed of the gearbox input shaft yielded by the transmission ratio of the starting gear between the gearbox input and output shaft.

Steering angle sensor system with increased redundancy

The invention relates to a steering angle sensor system with enhanced redundancy in order to increase faultlessness in measured results. In order to meet the safety requirements of steer by wire or other vehicle adjustment systems with regard to steering angle measurement data, several sensors (3, 4, 12) are operated in parallel and measurement data provided by a second fault-free sensor is evaluated if a first sensor is found to be faulty. Advantageous embodiments of the invention involve allocation of several sensor heads to a code track, the use of various physical measurement procedures within the same sensor system and the use of said sensors with a varying degree of measurement accuracy.

DOUBLE CLUTCH GEAR AND A METHOD FOR CARRYING OUT A HIGH SWITCHING FROM A BEGINNING GEAR TO A TARGET IN THE DOUBLE CLUTCH GEAR OF A VEHICLE

Position sensor arrangement for rotation angle sensor in motor vehicle

The sensor includes a coding element (6) which controls a light (L) from a light source (5) hitting on a CCD line sensor, in dependence on the position of the coding element. An evaluation arrangement (V,12,4) determines the position of the coding element in response to a current light distribution on the CCD line sensor (11), whereby the light source is activated in pulses. The light source is preferably driven with the maximum nominal power permissible for pulse operation. The light source is preferably switched on periodically, whereby its activated time is smaller than five percent of the total period.

transmission

Control and/or regulation method for dual-clutch gearbox has clutches controlled for slip regulation during overlapping gear shift

The control and/or regulation method has at least one of the clutches of the dual-clutch gearbox torque-controlled for providing slip regulation during an overlapping gear shift, e.g. the clutch for the target gear is controlled with varying the engine drive torque, with the slip revs of the clutch for the initial gear held constant. An Independent claim for a dual-clutch gearbox for an automobile is also included.

Distance measurement device for motor vehicles which operates with microwaves

The device transmits at least one transmission wave train from a transmitter (1-4) and receives the corresp. reflected wave train in a receiver (6-8). An evaluation device evaluates parameters of the reflected waves depending on corresp. parameters of the transmitted wave train, to determine characteristics of the reflecting obstruction. In order to detect an object constituting an obstruction for the vehicle, a transmission wave train in the microwave frequency range is transmitted. This lies in the millimetre wavelength range, esp. between 3 and 60 mm.

Process and device for driving a motor vehicle controls a parallel switching gear with a double coupling in the drive train

A gear for a motor vehicle (1) has an automatically operated friction coupling with a gear shaft coupled to a combustion engine (2) and a drive wheel (6) connected to the gear output. A conversion step between the gear (4) input and output shafts is switchable by an actuator (13b) controlled by a control unit (13). An Independent claim is also included for a process to operate a gear as above.

Twin-clutch transmission and method for controlling and/or regulating a twin-clutch transmission during an overlapping gearshift

The invention relates to method for controlling and/or regulating a twin-clutch transmission during an overlapping gearshift, whereby at least one clutch is controlled in such a manner that a clutch is slip-controlled. The invention also relates to a twin-clutch transmission for a vehicle, especially for carrying out the method, whereby at least one control device for controlling and/or regulating at least one clutch during an overlap phase is provided.

Device for the detection of particles on a windshield

The invention relates to a device (1) for detecting particles (2) on a windshield (3) of an automobile (10) comprising a radiation source (4) emitting optical beams (5) onto the windshield (3), a beam receiver (6) receiving part of the beams (5) sent to the windshield (3) and a control unit (8) controlling the radiation source (4) and evaluating the beams (7) received by said beam receiver (6). According to the invention, in order to reliably detect particles in the field of view of a driver of the automobile (10) in such a device (1) without arranging said device (1) in the field of view of the driver, the radiation source (4) is directed in such a manner that the optical beams (5) of the radiation source (4) hit the windshield (3) in the area of the field of view of the driver of the automobile (10) and the beam receiver (6) is directed to the area of the windshield (3) that is hit by the beams (5) of the radiation source (4).

Bestimmung eines motormomentfehlers während eines motormomenteneingriffs

Verfahren und vorrichtung zum steuern eines doppelkupplungsgetriebes

Doppelkupplungsgetriebe und ein verfahren zum durchführen einer hochschaltung von einem anfangsgang in einen zielgang bei dem doppelkupplungsgetriebe eines fahrzeuges

Verfahren zur steuerung einer kupplung

Verfahren und vorrichtung zum steuern eines doppelkupplungsgetriebes

Verfahren und warnvorrichtung zum grafischen aufbereiten eines bildes einer kamera

Flexible multilayer band on base of expanded thermoplast foil

Verfahren und warnvorrichtung zum grafischen aufbereiten eines bildes einer kamera