| Patent application number | Description | Published |
|---|
| 20090033264 | Method and device for determining a gradient-limited cumulative setpoint torque from a setpoint torque of a closed-loop speed control - 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. | 02-05-2009 |
| 20090063029 | METHOD FOR STARTING AN INTERNAL COMBUSTION ENGINE - 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. | 03-05-2009 |
| 20090090572 | METHOD FOR OPERATING A HYBRID VEHICLE - 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. | 04-09-2009 |
| 20090093921 | METHOD FOR OPERATING A HYBRID VEHICLE - 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. | 04-09-2009 |
| 20090133945 | Method for dynamic torque coordination of power units of a hybrid drive of a vehicle, and corresponding device - 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. | 05-28-2009 |
| 20090218151 | METHOD FOR OPERATING A HYBRID VEHICLE - 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. | 09-03-2009 |
| 20090224713 | METHOD FOR OPERATING A PARALLEL HYBRID DRIVE - 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. | 09-10-2009 |
| 20090321166 | METHOD FOR OPERATING A HYBRID DRIVE FOR A VEHICLE - 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 (V | 12-31-2009 |
| 20100000812 | Motor Vehicle Having a Hybrid Drive, and Method for Operating a Hybrid Drive - 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. | 01-07-2010 |
| 20100042278 | CONTROL DEVICE AND METHOD FOR CONTROLLING A HYBRID DRIVE - A control device for a hybrid drive, in particular for a hybrid drive of a motor vehicle having at least one combustion engine and at least one electric motor as driving motors, whose torques are coupled together to form a total torque. A controller is provided which generates an actuating signal for controlling the speed of each of the driving motors, a first actuating signal acting on the electric motor having a higher dynamic response than a second actuating signal acting on the combustion engine. | 02-18-2010 |
| 20100062896 | METHOD FOR OPERATING A HYBRID DRIVE OF A MOTOR VEHICLE - A method is provided for operating a hybrid drive of a motor vehicle which has a combustion engine, at least one electrical machine, and at least one electrical accumulator, the electrical machine and the electrical accumulator belonging to an electrical system of the motor vehicle. The following steps are provided for implementing the method: subdividing the operation of the electrical machine into adjacent subranges of a) transient compensation operation, b) boost and/or recuperation operation, and c) operation for maintaining the vehicle electrical system; assigning torque limits and/or power output limits of the electrical machine in at least two subranges; and, releasing and/or influencing the particular torque limits and/or power output limits of the subranges as a function of the current state of the electrical accumulator and/or of the electrical machine and/or of the vehicle electrical system. | 03-11-2010 |
| 20100089064 | Method for Operating a Hybrid Motor Vehicle - The invention relates to a method for operating the drive of a hybrid motor vehicle by an internal combustion engine torque and the torque of at least one electric motor which are superimposed in such a way than a common drive torque of the hybrid motor vehicle is produced. According to said invention, the torque of the internal combustion engine is influenced by the speed of rotation thereof or a signal derived therefrom and the torque of the electric motor is influenced by the speed of rotation or the signal derived therefrom. | 04-15-2010 |
| 20100167869 | METHOD FOR OPERATING A HYBRID DRIVE OF A MOTOR VEHICLE - In a method for operating a hybrid drive of a vehicle having at least one internal combustion engine and at least one first electric machine as drive machines of a first drive train of the vehicle, and an associated first transmission, the total torque of the drive machines is adapted in a shifting operation of the transmission in order to reduce the load at the transmission and/or in order to modify rotational speeds according to the new transmission ratio, and/or the torque gradient of the drive machines is restricted to a specifiable, maximum torque gradient of the resulting total torque of the drive machines of the first drive train in a transition between acceleration operation and trailing throttle operation. | 07-01-2010 |
| 20100198436 | COORDINATION OF OPERATING MODES AND TORQUES FOR HYBRID VEHICLE DRIVES - A method for operating a driving device of a vehicle, in particular of a motor vehicle, that has as drive units at least one internal combustion engine and at least one electric machine whose torques are used for generating a drive torque of the vehicle as a function of different operating modes, and which has at least one signal flow controlling at least one drive unit in at least one operating mode, a single signal flow controlling at least one of the drive units in all operating modes by defining at least one torque limit. | 08-05-2010 |
| 20100274421 | METHOD FOR OPERATING A HYBRID VEHICLE - In a method for operating a power-branching hybrid drive having at least one first and one second electric machine coupled via a transmission, as well as having an internal combustion engine which outputs a torque M | 10-28-2010 |
| 20100280736 | Method for Operating a Hybrid Vehicle and Control Unit for Implementing the Method - The invention relates to a method and a control unit for operating a hybrid vehicle in which at least two power units, at least one of which is an internal combustion engine, provide torque for a hybrid vehicle drive. It is proposed that a required total reserve torque is determined, and limits of presently available reserve torques of each individual power unit are determined. | 11-04-2010 |
| 20100282532 | Method For Operating A Drive Device Of A Hybird Vehicle - In a method for operating a drive device of a hybrid vehicle, in particular a hybrid motor vehicle, having at least one internal combustion engine and at least one electric machine, the torques of the internal combustion engine and the electric machine are added. A torque/torque component which, with respect to a request, is not deliverable by the internal combustion engine because of the system-related inertia of the internal combustion engine, is compensated at least partially by a torque/torque component delivered by the electric machine. | 11-11-2010 |
| 20100299009 | METHOD FOR OPERATING A DRIVE DEVICE, IN PARTICULAR A HYBRID DRIVE DEVICE - A method for operating a drive device, in particular a hybrid drive device, of a vehicle, in particular a motor vehicle, having at least one internal combustion engine and at least one electrical machine as drive units, which are mechanically coupled to one another, as a function of a torque demand, in particular a filtered torque demand, in a normal operation, an ideal target torque for the particular drive unit being defined for each of the drive units and, in a dynamic operation, a target torque being defined for each of the drive units which together meet the torque demand. | 11-25-2010 |
| 20110035085 | METHOD FOR OPERATING A HYBRID DRIVE DEVICE - A method for operating a hybrid drive device, in particular for a motor vehicle, which has at least one combustion engine and at least one electric machine, the combustion engine and the electric machine being mechanically and operatively connectible to each other by a separating clutch, and a slip torque transmitted by the separating clutch being ascertained. There is a provision for the slip torque to be determined as a function of the speed characteristic of a drive shaft of the combustion engine at least when starting and/or stopping the combustion engine and to be taken into account when operating the hybrid drive device. | 02-10-2011 |
| 20110093146 | SLIP OPERATION OF A CLUTCH IN HYBRID DRIVE DEVICES - A method for operating a hybrid drive device of a motor vehicle that has at least two different drive aggregates, in particular an electric motor and an internal combustion engine, and having a clutch, the drive aggregates being capable of being operatively connected using the clutch. It is provided that, in a diagnostic, and/or adaptation operating mode; the clutch is operated with a slippage. In addition, the present system relates to a hybrid drive device, a control device for a hybrid drive device, and a motor vehicle aggregate that has both the control device and the hybrid drive device. | 04-21-2011 |
| 20110118918 | ADAPTATION OF A STEADY-STATE MAXIMUM TORQUE OF AN INTERNAL COMBUSTION ENGINE - In a method for operating an internal combustion engine, a steady-state maximum output torque and a dynamic maximum torque are ascertained. The ascertained steady-state maximum output torque is changed to a resulting steady-state maximum torque by adapting the maximum output torque in such a way that it is equal to or greater than the ascertained dynamic maximum torque. | 05-19-2011 |
| 20110202215 | METHOD AND DEVICE FOR OPERATING A HYBRID DRIVE OF A VEHICLE - In a method for operating a hybrid drive of a vehicle, which is driven by a combustion engine and an electric motor, the electric motor is supplied with energy from an energy store having a power reserve and the power of the combustion engine is supplemented by the power of the electric motor during a hybrid drive operation. In a situation in which the vehicle is to be removed as quickly as possible from a dangerous situation, the energy supplied from the energy store to the electric motor is supplied from the power reserve of the energy store when a dangerous situation is detected. | 08-18-2011 |
| 20110224856 | METHOD FOR OPERATING A VEHICLE HAVING A HYBRID DRIVE SYSTEM AS WELL AS A DRIVE SYSTEM AND A VEHICLE - A method is described for operating a hybrid drive system which has a first drive unit, in particular an internal combustion engine, and a second drive unit, in particular an electric motor, which includes activating the first drive unit and the second drive unit in such a way that the first drive unit and the second drive unit each provide an output variable for the purpose of providing a total output variable; limiting the output variable provided by the first drive unit to a limiting value which is less than a maximum output variable which may be provided by the first drive unit; canceling the limitation if the output variable provided by the second drive unit corresponds to a maximum output variable which may be provided by the second drive unit. | 09-15-2011 |
| 20110256978 | Method and Device for Starting a Hybrid Vehicle - In a method for starting a hybrid vehicle having a first drive unit and a second drive unit, the setpoint starting torque is generated by the second drive unit. In this method, a starting clutch for connecting the first drive unit is brought into the slipping state when a predefined setpoint torque of the second drive unit is exceeded. | 10-20-2011 |
| 20110276207 | METHOD FOR OPERATING A DRIVE OF A MOTOR VEHICLE, AS WELL AS A DRIVE DEVICE AND AN ELECTRONIC CONTROL UNIT - A method is described for operating a drive of a motor vehicle that has at least two shafts, each able to be driven by a shaft drive device, a total drive torque of the motor vehicle corresponding generally to the sum of the shaft torques applied to the shafts. In this context, it is provided that a quantity and/or a change in the quantity of one of the shaft torques is/are taken into account in the open-loop and/or closed-loop control of the remaining shaft torques. A drive device of a motor vehicle as well as an electronic control unit are also described. | 11-10-2011 |
| 20120004832 | METHOD AND DEVICE FOR OPERATING A DRIVE UNIT - A method for operating an internal combustion engine includes: providing a desired power specification for triggering the drive unit; providing a specification of operating point-dependent power ranges for the supplied desired power specification, in which steady-state operation of the drive unit is permissible, a power range that is not permissible in the steady state being defined between the operating point-dependent power ranges; when a change in the desired power specification for the drive unit in a transitional operating mode necessitates traversing the power range that is not permissible in the steady state, triggering the drive unit on the basis of a specification of a guided desired power, the guided desired power specification being determined by guiding the desired power specification. | 01-05-2012 |
| 20120022730 | METHOD FOR DRIVING A HYBRID VEHICLE IN A LOAD REVERSAL - 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. | 01-26-2012 |
| 20120035820 | METHOD AND DEVICE FOR OPERATING A VEHICLE, IN PARTICULAR A HYBRID VEHICLE - A method is described for operating a vehicle, in particular a hybrid vehicle, in which each of the two axles of the vehicle, which are not mechanically coupled, is driven by at least one drive unit, thus transmitting a torque to the wheels of the respective axle. To make optimal use of the different coefficients of friction of the wheels which occur with different roadway conditions, the rotational speeds of the wheels of both drive axles are ascertained and averaged, a difference being formed from the averaged rotational speeds of the two axles, respectively, and the torque on at least one axle being influenced based on this difference so that differences in the averaged rotational speeds of the wheels are counteracted. Instead of the rotational speed difference, the deviation of this rotational speed difference from a setpoint rotational speed difference may be used, for example, within the scope of ESP. Alternatively, regulation may be performed based on the wheels of an axle, in which case a dedicated drive unit is associated with each wheel. | 02-09-2012 |
| 20120138405 | METHOD AND DEVICE FOR CHANGING THE MECHANICAL COUPLING OF A DRIVE UNIT TO A POWER TRAIN OF A MOTOR VEHICLE, WHOSE POWER TRAIN IS EQUIPPED WITH AT LEAST TWO DRIVE UNITS - A method for changing a drive unit's mechanical coupling to a motor vehicle power train, which has at least two drive units, in which at least one first drive unit of the two drive units is coupled via various mechanical couplings, including mechanical transmission ratios, during the travel of the motor vehicle, a power or torque influence of the two drive units occurring if there is a change of the mechanical coupling. To ensure a change of the mechanical coupling without the vehicle occupants perceiving it, the change of the mechanical coupling of the first drive unit of the two drive units occurs in at least two operating modes, a first operating mode causing a slower operating point change with respect to time of the two drive units, while a more rapid operating point change as to time of the two drive units is provided in a second operating mode. | 06-07-2012 |
| 20120166060 | METHOD FOR COORDINATING AT LEAST ONE DRIVE UNIT - A method for coordinating at least one drive unit of a vehicle, a control unit designed as a drive unit control unit ( | 06-28-2012 |
| 20120209464 | METHOD FOR OPERATING A DRIVE DEVICE OF A MOTOR VEHICLE AND DRIVE DEVICE FOR A MOTOR VEHICLE - A method for operating a drive device of a motor vehicle, which includes at least one internal combustion engine and at least one electric machine, a driving resistance, in particular an uphill gradient, being ascertained and the internal combustion engine being operated as a function thereof. The internal combustion engine is operated as a function of a driving resistance to be expected, which is determined as a function of an instantaneous driving resistance. A drive device for a motor vehicle is also described. | 08-16-2012 |
| 20130035201 | Method and Device for Operating A Hybrid Vehicle - A method for operating a hybrid vehicle, having at least one first drive unit and one second drive unit, the second drive unit being started by at least one portion of the drive torque provided by the first drive unit in that the clutch situated between the first drive unit and the second drive unit is brought from a disengaged state into a slipping state. To improve the driving comfort of the hybrid vehicle during a start or a stop of the internal combustion engine, at least two clutches are shifted into the slipping state for starting the second drive unit. | 02-07-2013 |
| 20130138290 | METHOD AND DEVICE FOR RECOGNIZING UNINTENDED DRIVE TRAIN RESPONSES OF A MOTOR VEHICLE HAVING AT LEAST ONE DRIVE UNIT - A method for recognizing unintended drive train responses of a motor vehicle includes at least one drive unit, in which at least one input variable of the motor vehicle and/or of the drive unit is input into the drive train, and at least one output variable is measured at the motor vehicle and/or the drive unit. In order to recognize an unintended drive train response early, the at least one input variable is supplied to a dynamic model which at least partially simulates the drive train of the motor vehicle, the dynamic model determining, based on the at least one input variable, at least one model output variable which is compared to the at least one measured output variable, and an unintended drive train response being deduced if there is a difference between the measured output variable and the model output variable. | 05-30-2013 |
| 20130307577 | METHOD AND DEVICE FOR DETECTING A MALFUNCTION OF AN ELECTRIC MACHINE - The invention relates to a method for detecting a malfunction of an electric machine, a first variable (i | 11-21-2013 |
| 20130311034 | METHOD AND DEVICE FOR MONITORING THE SATISFACTORY FUNCTIONING OF AT LEAST ONE FIRST AND A SECOND COMPONENT OF A VEHICLE DRIVE TRAIN - The invention relates to a method for monitoring the proper functioning of at least one first and a second component ( | 11-21-2013 |
| 20150088351 | METHOD AND DEVICE FOR OPERATING A DRIVE DEVICE OF A VEHICLE - The invention relates to a method for operating a drive device ( | 03-26-2015 |
