Abstract: A method for operating a motor vehicle having a hybrid drive, including a combustion engine having an engine management and at least one electro machine having a control unit, which is at least intermittently operated in an rpm-regulated manner and which is able to be in operative connection with a drive shaft of the combustion engine. For the closed-loop speed control of the electro machine, its torque is influenced by its rotational speed or a signal derived therefrom.

Abstract: A method for operating a hybrid drive for a vehicle including at least one internal combustion engine and at least one electric motor, the internal combustion engine and the electric motor being operable in a hybrid mode, which enables a temporary power boost by supplementing the internal combustion engine output with electric motor output. The temporary power boost is allowed only until reaching a limit velocity (VG), which depends on the maximum velocity (VSM, VSM?) in internal combustion engine mode, which depends on the particular driving resistance.

Abstract: In a method for operating a parallel hybrid drive of a vehicle, in particular of a motor vehicle, having an electric machine and an internal combustion engine, the internal S combustion engine is started in the driving state of the vehicle with the aid of the electric machine by engaging a disconnecting clutch. It is provided that at least one performance quantity of the parallel hybrid drive is detected and compared with an appropriate model performance quantity of a model of the parallel hybrid drive, the model not including the internal combustion engine, and that a deviation resulting from the comparison is compensated for, at least partially, by the electric machine.

Abstract: A method is for operating a vehicle having a hybrid drive, in which the hybrid drive has an internal combustion engine and at least one electric motor as drive units, and the units cooperate with one another. To achieve a negative drivetrain setpoint torque, the negative drivetrain setpoint torque is applied by the electric motor, and the internal combustion engine is operated to the greatest extent possible outside its overrun mode.

Abstract: A method and device for dynamic torque coordination of power units of a hybrid drive of a vehicle, in particular a motor vehicle. The method has a plurality of successive coordination stages, each coordination stage being assigned an operating range for at least one of the power units, and each coordination stage making at least one demand on a first power unit and/or a second power unit as a function of an overall setpoint torque requested from the hybrid drive, a subsequent coordination state having an enlarged operating range compared to a preceding coordination stage, and the subsequent coordination stage is used if the demand was unable to be satisfied within the operating range of the assigned coordination stage.

Abstract: A method for operating a hybrid drive having at least one first and one second drive-connected drive machine, in which an actual torque of at least one of the drive machines is influenced by a reference-forming element in that, from a combined setpoint torque, a first setpoint torque is formed for a slow influencing path and a second setpoint torque is formed for a fast influencing path for the first drive machine and a setpoint torque is generated for a fast influencing path of the second drive machine. A provision is made for the lead setpoint torque for influencing the slow influencing path of the first drive machine to be obtained from the unfiltered combined setpoint torque before the combined setpoint torque is processed in the reference-forming element.

Abstract: A method for operating a hybrid drive, in which at least two power units cooperate in driving, and an energy store of one of the power units is charged intermittently and one of the power units is at least intermittently supplied with driving energy from the energy store, the power unit generating a setpoint output. A requested setpoint drive torque of the drive is generated and the setpoint output of the power unit is simultaneously maintained on average over time, deviations from the setpoint output as a function of instantaneous operating points of the power units being permitted. This is done to optimize the fuel consumption.

Abstract: A method is described for starting an internal combustion engine having an E-machine coupled to it in a motor vehicle, after the input of a certain torque command at a drive control of the internal combustion engine, the internal combustion engine being accelerated for the start by the E-machine, and the internal combustion engine being set by the drive control, via actuators, to specified characteristics values for the start. To reduce exhaust gas emissions at the start of the internal combustion engine, the internal combustion engine is accelerated by the E-machine, without the injection of fuel, until the engine torque that is able to be implemented by the internal combustion engine, essentially corresponds to the torque command, and the injection of fuel into the internal combustion engine is only then released.

Abstract: In a method for determining a gradient-limited setpoint torque from a requested setpoint drive torque and a controller setpoint torque of a closed-loop speed control, the gradient of an unlimited cumulative setpoint torque, which is a function of the requested setpoint drive torque and the controller setpoint torque of the closed-loop speed control, is limited in a region of the zero crossing of the gradient-limited setpoint torque by a rate-of-change limitation to a maximally permitted or a minimally permitted value. The maximally permitted or the minimally permitted value of the rate-of-change limitation is a function of the controller setpoint torque of the closed-loop speed control.

Abstract: The invention relates to a method for operating a vehicle drive comprising at least one internal combustion engine and at least one electric machine that is mechanically coupled to the internal combustion engine, in addition to an energy accumulator that is actively coupled to the electric machine and/or the internal combustion engine. According to the invention, the internal combustion engine and the electric machine or machines generate a required drive target torque at approximately the same time, a required optimum target torque of the internal combustion engine being limited to an optimized minimum torque lying above a minimum torque of an internal combustion engine or being limited to an optimized maximum torque lying below a maximum torque of an internal combustion engine and/or a modification speed of the optimum target torque of the internal combustion engine.

Abstract: A method for regulating an electromechanically power-splitting hybrid drive system of a motor vehicle, having an internal combustion engine and two electric motors that are coupled by way of a transmission, as well as an electromechanically power-splitting hybrid drive system for a motor vehicle.