Patent application number | Description | Published |
20100125022 | METHOD FOR OPERATING A DRIVE TRAIN - A process of operating a motor vehicle drive train that comprises at least one hybrid drive having a combustion engine and an electric motor with a clutch connected between the combustion engine and the electric motor, and an automatic transmission is arranged between the hybrid drive and an output. The process including the step of disengaging the clutch to carry out a shift, after a reduction of load at the internal combustion engine and after a reduction of the torque that is transmitted between the internal combustion engine and the electric motor. Subsequently carrying out a gear shift by the automatic transmission and, thereafter, increasing the torque that is transmitted by the clutch. Increasing the load from the combustion engine, and optionally engaging the clutch. A load transfer by the electric motor occurs before and/or after the gear shift in the transmission is carried out. | 05-20-2010 |
20100197450 | METHOD FOR OPERATING A DRIVE TRAIN - A method for operating a drive train of a motor vehicle. The drive train comprising a hybrid drive with an internal combustion engine and an electric motor, a transmission arranged between the hybrid drive and a drive output, and a clutch arranged between the internal combustion engine and the electric motor. The internal combustion engine is started by engaging the clutch only when the electric motor is providing drive power. In this situation when shifting gears in the transmission with interruption of the traction force, immediately after the gear change and during a load build-up phase of the shift operation, the internal combustion engine is started by the electric motor without traction force interruption. The clutch is controlled to partially engage to start the combustion engine and then it is completely disengaged before reaching a synchronous speed between the combustion engine and the electric motor. | 08-05-2010 |
20100204006 | METHOD FOR THE OPERATION OF A DRIVE TRAIN - A method of operating a drive train comprising a hybrid drive with a combustion engine and an electric motor; a transmission positioned between the hybrid drive and the output; and a clutch positioned between the combustion engine and the electric motor. When the electric motor exclusively drives the vehicle, the combustion engine can be started by engaging the clutch. At the time when the electric motor permanently or without traction force interruption is coupled to the output, and the rotational speed of the electric motor is greater than the starting rotational speed of the combustion engine, and a clutch, positioned between the combustion engine and the electric motor, is engagedly and disengagedly controlled so that the clutch is brought into slippage, via partial engagement, to start the combustion engine, and thereafter the clutch is completely disengaged before reaching a synchronous rotational speed between the combustion engine and the electric motor. | 08-12-2010 |
20100217508 | METHOD FOR TREATEMENT OF A DRIVELINE - A method of operating a drivetrain of a motor vehicle. The drivetrain comprises a drive aggregate formed as a hybrid drive with a combustion engine and an electric machine, and a transmission connected between the drive aggregate and a drive output. The drivetrain also comprises a pressure reservoir system with at least one pressure reservoir and at least one pressure generator by the combustion engine in order to fill the pressure reservoir. A pressure in the pressure reservoir of the pressure reservoir system is measured and a value of the actual pressure, in the pressure reservoir system, is compared with at least one threshold value. When the actual pressure value is higher than a threshold value, stopping of the combustion engine is permitted, whereas if the actual pressure value is lower than the threshold value, stopping of the combustion engine is not permitted. | 08-26-2010 |
20100304925 | MOTOR VEHICLE CONTROL SYSTEM - A motor vehicle control system for controlling a motor vehicle with a hybrid drive comprising an internal combustion engine and an electric motor, with a strategy sub-component, a control sub-component and an actuator sub-component. The functional components include at least an internal combustion engine functional component, a transmission functional component, such that the strategy sub-component ( | 12-02-2010 |
20100318251 | MOTOR VEHICLE CONTROL SYSTEM - A motor vehicle control system for controlling a motor vehicle with a hybrid drive comprising an engine and an electric motor and a plurality of functional components each divided into a strategy sub-component, a control sub-component and an actuator sub-component. The functional components include at least an engine functional component, a transmission functional component, and a hybrid functional component for controlling the electric motor and a clutch connected between the internal combustion engine and the electric motor. The strategy sub-component ( | 12-16-2010 |
20110039655 | METHOD AND DEVICE FOR CONTROLLING A CREEP MODE OF A VEHICLE HAVING A HYBRID DRIVE SYSTEM - The invention relates to a method and a device for controlling a creep mode of a vehicle having a hybrid drive system ( | 02-17-2011 |
20110054725 | METHOD FOR TRANSMITTING TARGET VALUES AND/OR TARGET DRIVE TRAIN STATES - The invention proposes a method for transferring the desired values and/or the desired drive train states of the strategy for the operative functions in a hybrid vehicle, in particular in a parallel hybrid vehicle, comprising a hybrid control system which is divided into at least two functional layers, with one layer being in the form of a strategic layer and the second layer being in the form of an operative layer, in which method, in a first step, the desired drive train state is transmitted from the strategic layer to the operative layer, with the drive train state which is checked and accepted as a target then being transmitted from the operative layer to the strategic layer, with, in a next step, the drive train state which is currently valid after the change or after the switchover to the target state being transmitted from the operative layer to the strategic layer, and with the desired values for continuous variables of the new state then being calculated in the strategic layer and being transmitted to the operative layer. | 03-03-2011 |
20110166726 | MOTOR VEHICLE CONTROL SYSTEM - A control system for controlling a vehicle with a hybrid drive comprising an internal combustion engine and an electric motor and a plurality of functional components each divided into at least a strategy sub-component, a control sub-component and an actuator sub-component, the functional components including at least an engine functional component, a transmission functional component and a hybrid functional component, such that the strategy sub-component ( | 07-07-2011 |
20110190969 | METHOD FOR CONTROLLING AND/OR REGULATING AT LEAST ONE PARTIAL LOAD TRANSFER IN A HYBRID DRIVE ARRANGEMENT - The invention relates to a method for controlling and/or regulating at least one partial load transfer in a hybrid drive arrangement of a motor vehicle. According to said method, a driver's desired torque (M | 08-04-2011 |
20140100072 | RANGE-CHANGE TRANSMISSION WITH AN ELECTRIC ENGINE - A group transmission device with an electric machine, a main transmission of a countershaft design, a splitter group of a countershaft design which is connected upstream of the main transmission and a range group connected downstream of the main transmission. In the area of the main transmission, the splitter group, and the range group, a gear ratio is variable by gear steps that can be engaged in, or disengaged from, the force flow by interlocking shifting elements. At least during a gearshift, torque of the electric machine can be introduced into the force flow in the area of the splitter group. The splitter group has at least three gear steps that can be engaged or disengaged, the main transmission has at least two gear steps that can be engaged or disengaged, and the range group has at least two gear steps that can be engaged and disengaged. | 04-10-2014 |
20150031502 | METHOD FOR OPERATING A DRIVE TRAIN AND CONTROL DEVICE - A method for operating a drive train of a hybrid vehicle with a hybrid drive comprising at least an electric machine and an internal combustion engine, wherein an automated manual transmission is connected between the internal combustion engine and an output, wherein the electric machine is coupled via a friction clutch to a shaft of the automated manual transmission. Wherein in the automated manual transmission, by interruption of the drive torque provided by the hybrid drive on the output, shifts are executed in such a way that in a first phase the drive torque provided at the output is first reduced, subsequently in a second phase the actual gear shift is executed and following that in a third phase drive torque is built up at the output. Wherein for execution of the actual shift after a gear disengagement of an actual gear of the shift and before a gear engagement of a target gear of the shift, the automated manual transmission is synchronized using a flywheel mass of the electric machine such that, when the friction clutch is opened, the rotational speed of the electric machine is brought to an inertial rotational speed and that subsequently the friction clutch is first closed to the inertial synchronization of the manual transmission and subsequently at least partially opened again. | 01-29-2015 |