| Patent application number | Description | Published |
|---|
| 20080249696 | Method and device for operating a drive unit - A method and a device for operating a drive unit which enable better torque coordination for a speed controller. A load-reversal damping component is provided, which filters a first setpoint value for an output variable of the drive unit to damp a load reversal. A speed controller is provided, which specifies a second setpoint value for the output variable of the drive unit in order to adjust an actual value for an engine speed of the drive unit to a setpoint value for the engine speed. A first component of the second setpoint value for the output variable specified by the speed controller is taken into account in the formation of the first setpoint value. A remaining second component of the second setpoint value for the output variable specified by the speed controller, together with the filtered first setpoint value, is taken into account only when forming a resulting third setpoint value for the output variable, the first component of the second setpoint value for the output variable specified by the speed controller being formed as a function of at least one characteristic of the load-reversal damping component, in such a way that it is not or only negligibly affected by the filtering. | 10-09-2008 |
| 20080274856 | Method and control device for implementing a startup of a combustion engine in a hybrid vehicle - A method for compensating a transmitted torque of a clutch between a regulated drive motor, in particular an electromotor, and a combustion engine in the transition to an operation using only the drive motor, to hybrid operation in which an overall torque is supplied jointly by the drive motor and the combustion engine, and the engine speed of the drive motor is controlled with the aid of a manipulated variable; to implement the transition, the combustion engine is dragged by coupling it with the drive motor with the aid of a proportional clutch having a controllable transmitted torque, and the control of the engine speed of the drive motor is implemented as a function of the transmitted torque using which the drive motor is coupled with the combustion engine. | 11-06-2008 |
| 20090124453 | METHOD FOR OPERATING A HYBRID DRIVE SYSTEM HAVING A TORQUE CONVERTER - A method for operating a hybrid drive system, in particular of a motor vehicle, having at least one electric machine and one internal combustion engine, a disconnecting clutch being provided between the electric machine and the internal combustion engine and a torque converter having a turbine wheel being provided between the electric machine and a hybrid drive output, the disconnecting clutch being engaged for starting the internal combustion engine. It is provided that, as a function of the rotational speed of the turbine wheel of the torque converter, a rotational speed is predefined for the electric machine such that no sudden torque change occurs at the hybrid drive output when the internal combustion engine is started. | 05-14-2009 |
| 20090132108 | METHOD FOR LIMITING SETPOINT TORQUES DURING ENGINE CONTROL - A method for controlling a motor vehicle drive, in particular a hybrid drive, is provided, the motor vehicle drive having at least two individual motors. In a first method step, at least one total setpoint torque is calculated. In a second step, the at least one total setpoint torque is split into at least two individual setpoint torques of the at least two individual motors. Subsequently, in a first individual torque comparison step, the sum of the at least two individual setpoint torques is compared with the total setpoint torque. In the event of a difference by more than a predefined tolerance value, a limitation step is initiated. In this limitation step, the at least two individual setpoint torques are each multiplied by a limiting factor to generate at least two limited individual setpoint torques. | 05-21-2009 |
| 20090305842 | Method for Simplifying Torque Monitoring, in Particular for Hybrid Drives - In a method for controlling a vehicle drive unit having at least two individual drives and a vehicle control unit, a continuous torque comparison between a permissible torque M | 12-10-2009 |
| 20090308673 | Method for starting an internal combustion engine in a hybrid drive - A method is described for starting an internal combustion engine of a hybrid drive having at least one electric drive. This drive can be coupled to the internal combustion engine via a first clutch for the pulse start of the engine. A speed change of the at least one electric drive occurring during the pulse start of the internal combustion engine is compensated for by continuously occurring changes of the transmission ratio in a vehicle transmission. | 12-17-2009 |
| 20100042276 | METHOD FOR MONITORING MULTI-MOTOR DRIVE - A method for controlling a vehicle drive unit, which comprises at least two individual drives, at least one of which is able to provide a negative torque. A vehicle control unit is provided, within which a continuous torque comparison is performed within a monitoring level. A permissible torque is ascertained therein. Using a torque range checker it is established whether ascertained setpoint torques lie within torque ranges of the at least two individual drives. | 02-18-2010 |
| 20110010029 | Method for Simplifying Torque Distribution in Multiple Drive Systems - A method is provided for monitoring the torque distribution in multiple drive systems, e.g., in hybrid drives. The hybrid drive includes at least two individual drives which are controlled via an engine control unit, in which a torque distribution of a setpoint torque M | 01-13-2011 |
