Patent application number | Description | Published |
20100151990 | METHOD AND DEVICE FOR COMPENSATING A TRANSMITTED TORQUE OF A DISCONNECTING CLUTCH OR A HYBRID CLUTCH OF A HYBRID DRIVE - A method and a device for compensating a transmitted torque of a clutch between a regulated drive motor, in particular an electric motor, and an internal combustion engine of a hybrid drive when transitioning from an exclusive operation using the drive motor to a hybrid operation, a total torque from the drive motor and the internal combustion engine being jointly provided in hybrid operation, the rotational speed of the drive motor being controlled or regulated with the aid of a manipulated variable; the internal combustion engine being entrained at a controllable transmitted torque by coupling to the drive motor via a proportional clutch for performing the transition. The rotational speed of the drive motor is controlled or regulated as a function of a setpoint transmitted torque using which the drive motor is to be coupled to the internal combustion engine. | 06-17-2010 |
20100173744 | METHOD AND DEVICE FOR OPERATING A DRIVE UNIT - A method and an apparatus are provided for operating a drive unit having at least one combustion engine and at least one electrical machine mechanically coupled to the at least one combustion engine. The method and apparatus enable improved boost operation. In an embodiment, a target value for an output variable of the drive unit is implemented by the at least one combustion engine and the at least one electrical machine. The contribution of the at least one electrical machine to the implementation of the target value for the output variable is made available at most for a predefined time. | 07-08-2010 |
20100274423 | Idle speed regulation for a hybrid vehicle - A regulating method for hybrid vehicles having an electric motor and an internal combustion engine, for rotational speed regulation of the electric motor, including detecting the driving speed of the vehicle, detecting a desired torque, and comparing the driving speed with a driving speed minimum value, in which, when a desired torque below a torque minimum value is detected and the comparison yields the result that the driving speed is not above the driving speed minimum value, the electric motor is regulated to a setpoint idle speed which is below the minimum idle speed of the internal combustion engine. | 10-28-2010 |
20110093175 | METHOD AND DEVICE FOR ENGAGING A CLUTCH - In a method for engaging a clutch having at least one previously known touch point position, the clutch is engaged according to a speed profile, the course of which depends on at least one of the previously known touch point positions. | 04-21-2011 |
20110230307 | Method and device for operating a hybrid drive device during the start of an internal combustion engine - In a method for operating a hybrid drive device for a motor vehicle having at least one internal combustion engine, another drive unit and a separating clutch, to start the internal combustion engine the separating clutch is engaged, and during the start of the internal combustion engine, a setpoint rotational speed is predefined for the other drive unit. This setpoint rotational speed for the other drive unit is determined with the aid of a drivetrain model. | 09-22-2011 |
20110301798 | METHOD FOR REGULATING ROTATIONAL SPEED - A method is provided for regulating the rotational speed in a hybrid drive of a vehicle having a first drive source, in particular an internal combustion engine, and a second drive source, in particular an electric motor. A rotational speed variable which is a function of a rotational speed of the first drive source and of a rotational speed of the second drive source is determined. The rotational speed of the first drive source or of the second drive source is regulated based on the rotational speed variable for oscillation reduction. | 12-08-2011 |
20120059567 | Method and device for operating a drive unit of a motor vehicle - A method is described for operating a drive unit of a motor vehicle, a setpoint torque being determined for driving the drive unit as a function of a driver request torque and an idle speed regulator torque being included in the driver request torque for determining the setpoint torque, and a drivability filter being applied for torque smoothing. In order to maintain the quality of the speed regulation and simultaneously make the drivability of the vehicle comfortable, the drivability filter is applied before or after the inclusion of the idle speed regulator torque in the driver request torque as a function of the instantaneous driving situation of the motor vehicle. | 03-08-2012 |
20120130579 | METHOD AND DEVICE FOR DETERMINING THE BEGINNING OF A START PHASE OF AN INTERNAL COMBUSTION ENGINE IN A HYBRID 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. | 05-24-2012 |
20120303197 | METHOD AND DEVICE FOR CONTROLLING THE IDLE SPEED IN A HYBRID VEHICLE - A method for controlling the idle speed in a hybrid vehicle in which at least two power plants contribute together or separately to driving the hybrid vehicle, and a setpoint value is compared to an actual value for controlling the idle speed, the setpoint rotational speed being set as a function of the comparison by changing at least one intensification factor of the control. To adapt the control dynamics to the actual transmission characteristics of the first of the two power plants, the idle speed control for the at least two power plants is carried out simultaneously, the at least one intensification factor being continuously adapted to the power output of a first of the two power plants. | 11-29-2012 |