Robert Boschgmbh

Alexander Maass

Manfred Hellmann

Frank Steuernagel

Hermann Winner

Gholamabas Esteghlal

Jens-Werner Falkenstein

Werner Urban

Rainer Moritz

Jens Lueder

Andreas Seel

Jens Schick

Thorsten Juenemann

Alexander Wuerz-Wessel

Boyke Richter

Joerg Kieser

Joerg Heckel

Markus Vogelgesang

Benjamin Klotz

Christian Vienken

Kai Moegle

Alexander Roesch

Klaus-Guenther Fleischer

The invention relates to a method and device for determining the position angle of a rotor () in an electric synchronous machine (). The device is designed to comprise: a voltage generator () for generating electrical voltage pulses at angles in a coordinate system fixed in respect of the stator when the rotor () is stationary; a measuring device () for measuring any electrical current value returning to the electrical voltage pulses generated by the voltage generator (); and a computing device (), which is designed: &#x2014;to store a current signal curve of the current values measured; &#x2014;to generate a zero-mean current signal curve by shifting the current signal curve or the measured current values; &#x2014;to compute an integral function () of the zero-mean current signal curve; and&#x2014;to determine the position angle of the rotor () on the basis of the computed integral function ().

Method and device for determining the position angle of a rotor in an electric synchronous machine

The invention relates to a method for regulating a hybrid drive of a hybrid electric motor vehicle which has an electric energy store (HV), said method having the following steps: determining (S) criteria for engaging the electric drive (EM; EM, EM) and/or the internal combustion engine (VM) using an adjustable drive mode, wherein a part of a battery capacity of the electric energy store (HV) is reserved using a variable setting; and regulating (S) the engagement of the electric drive (EM; EM, EM) and/or the internal combustion engine (VM) of the hybrid electric motor vehicle using the determined criteria and the variable setting.

Method and regulating device for regulating a hybrid drive of a hybrid electric motor vehicle

A device for a traffic flow assistant for a vehicle includes a surroundings sensor system, which recognizes traffic-relevant objects on a traffic lane, on which the vehicle is traveling, and on at least one further adjacent lane, gaps in the traffic are recognized with the aid of the surroundings sensor system and vehicle-dynamic parameters of the objects are determined and future gaps in the flow of traffic are able to be predicted therefrom. For these recognized gaps and predicted gaps, lane change options are ascertained and, from this and the present and/or predicted presence of gaps in the traffic suitable for changing lanes and the vehicle-dynamic state of the vehicle, a signal for the lane selection is generated, which is dependent on the lane change options and an optimization strategy.

Lane change assistant for optimizing the traffic flow (traffic flow assistant)

A method and a device for driver information, according to which a warning is produced on the basis of the lane information which indicates crossing of the lane edge. Upon branching of a roadway line, the particular outer lines are used as lane edge markings as the basis for the lane departure warning.

Method and device for driver information

The invention relates to a method for operating a drive device () of a motor vehicle, said drive device () comprising at least one combustion engine () and at least one electric machine (), as well as a dual clutch transmission () which can be functionally connected to the combustion engine () and which comprises a first sub-transmission (), a first clutch () being associated therewith, and a second sub-transmission (), a second clutch () and the electric machine () being associated therewith. In a purely electrical driving operation, the electric machine () is operated in a motorized manner, a driving gear is engaged in the second sub-transmission (), and both clutches () are disengaged. According to the invention, in order to start the combustion engine () during the electric driving operation, the second clutch () is engaged so as to drive the combustion engine () by means of the electric machine (), a gear is engaged in the first sub-transmission (), said gear having a lower gear ratio than the engaged driving gear of the second sub-transmission (), the first clutch () is brought into a slip position and the second sub-transmission () is subsequently brought into a neutral position, the rotational speed of the electric machine () is increased at least to a starting rotational speed for the combustion engine () with the slip of the first clutch () being adjusted to maintain a forward torque of the motor vehicle, and the combustion engine () is started once its starting rotational speed has been reached. In addition, the invention relates to a device for operating a drive device of a motor vehicle.

Method and device for operating a drive device

A method for driving a hybrid vehicle during a load reversal includes: the application of a first torque on a first hybrid vehicle axle during an acceleration reversal; and the application of a second torque on a second hybrid vehicle axle during the acceleration reversal, a direction of action of the second torque being opposite to a direction of action of the first torque.

Method for driving a hybrid vehicle in a load reversal

A method and a device for operating a hybrid vehicle, which ascertain the torque necessary for starting the non-operating internal combustion engine, and this torque is reserved by an additional drive unit. The torque necessary for starting the non-operating internal combustion engine is minimized by appropriately adjusting parameters of the internal combustion engine system.

Method and device for operating a hybrid drive for a vehicle

A method and a device for operating a drive train for a vehicle is described, which has at least one drive unit, which is suitable for outputting a drive torque. The rates of change for triggering a torque increase and a torque reduction of the drive torque of the at least one drive unit are specified. This occurs in such a way that the specifiable rates of change of the torque increase and the torque reduction of the drive torque of the at least one drive unit are different.

Method and device for operating a drive train for a vehicle

A method for determining the beginning of a start phase of an internal combustion engine in a hybrid vehicle, in which a second drive unit drives the hybrid vehicle, the internal combustion engine being started upon reaching a certain drive torque of the second drive unit. In order to always be able to achieve the maximum solely electric driving range of the hybrid vehicle using the second drive unit and simultaneously improve the driving comfort of the hybrid vehicle by optimizing the internal combustion engine start triggering, the internal combustion engine is started when a predicted drive torque of the second drive unit is less than or equal to the drive torque, as instantaneously measured and increased by a torque reserve, of the second drive unit.

Method and device for determining the beginning of a start phase of an internal combustion engine in a hybrid vehicle

A method for ascertaining a rotational speed parameter for determining a setpoint torque for driving a drivetrain. The drivetrain comprises a first and at least one second drive assembly for driving a hybrid vehicle. The first drive assembly can be coupled to the drivetrain by means of a clutch. The second drive assembly is mechanically coupled to the drivetrain. When the hybrid vehicle is being driven by means of at least the first drive assembly, the rotational speed parameter corresponds to the value of a shaft rotational speed. When the hybrid vehicle is being driven only by means of the second drive assembly, the rotational speed parameter corresponds to the value of a determined rotational speed.

Method and device for ascertaining a rotational speed parameter for determining a setpoint torque

A driver assistance system having a lane-keeping function, having a device for detecting the lanes on a roadway, and a control unit for intervening in the steering system of the vehicle for lane-keeping. Means are provided in the driver assistance system for detecting the position of the vehicle with respect to the lane marking of the lane. Furthermore, means are provided for detecting a travel of the vehicle through a curve. The control unit executes its control function as a function of the position of the vehicle on the lane and as a function of the cornering. The intervention depends on whether the vehicle is located on the inner side of the curve or on the outer side of the curve.

Driver assistance system

A method for detecting an optical structure from image sequences of an image recording system. An optical flow field is derived from the image sequences of the image recording system. The vectors of the optical flow field are broken down into components by projection onto a coordinate system of the image recorded by the image recording system. At least one component of the flow vectors is analyzed for a change of direction. The image elements containing a change of direction of a vector component are connected to form a curve.

Method for detecting an optical structure

A method for travel course prediction in a motor vehicle having a position finding system for objects situated ahead of the vehicle is provided. In accordance with the method, a function describing the shape of the roadside is calculated on the basis of measured distance data and angle data for stationary roadside targets, wherein multiple stationary targets are identified and tracked. The path of the road is estimated for various subsets of the set of tracked stationary targets, under the assumption that these stationary targets are situated along the roadside, and roadside targets are differentiated from interfering objects on the basis of the plausibility of the resulting possible shapes of the roadside, the most probable shape of the roadside being determined on the basis of the roadside targets.

Method and device for predicting the course of motor vehicles

A method and a device for driver information and for a reaction upon leaving the traffic lane by a vehicle. In this context, the course of at least one edge marking of the traffic lane is ascertained, the track of the vehicle that is to be expected is determined, and as a function of these variables the possible leaving of the traffic lane by the vehicle is ascertained. In the determination of the track of the vehicle, future reactions of the driver are taken into consideration.

Method and device for informing a driver or for reacting when the vehicle leaves a lane

A method and a device for warning a driver, the magnitude of the generated warning signal being a function of the probability of the driver inattentiveness.

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Ludwigsburg, Germany

Alexander Maass