Patent application number | Description | Published |
20130036848 | Vehicle Transmissions - There is provided a vehicle transmission including a transmission input, a transmission output, and a main shaft and a countershaft, which together form a plurality of transmission ratios for providing different gears, wherein the countershaft can be shifted by means of at least one or at least two parallel gear ratios that are optionally shiftable in drive connection with the transmission input. The vehicle transmission further includes a range change transmission, comprising at least two range-change unit transmissions that are different from one another, by means of which the main shaft can be shifted optionally into a drive connection with the transmission output, wherein a performance interface for connecting an electric motor is provided in direction of the propulsion power flow from the transmission input to the transmission output downstream of the countershaft and upstream of the range change transmission. | 02-14-2013 |
20140081528 | Method of Controlling a Vehicle Drive Train with a Hydrodynamic Retarder - The invention concerns a method for controlling a vehicle drive train with a hydrodynamic retarder which can be engaged and disengaged mechanically via a coupling, whereas the retarder comprises a working chamber formed between two bladed wheels, which is filled with a working fluid for generating a braking torque after detecting a retarder switch-on signal and is emptied of the working medium after detecting a retarder switch-off signal to turn off the braking torque, and the retarder is driven in braking mode by means of a drive shaft via the closed coupling to constitute a hydrodynamic circuit of the working fluid in the working chamber. | 03-20-2014 |
20140113759 | Drive Train Having a Hydrodynamic Retarder and Its Control Method - The invention concerns a drive train
| 04-24-2014 |
20140151176 | Method for Controlling a Hydrodynamic Retarder which can be Disengaged Mechanically Via a Separating Clutch - The invention concerns a method for controlling a hydrodynamic retarder which can be disengaged mechanically via a separating clutch in a motor vehicle, which comprises a rotating bladed rotor and a bladed stator or a rotating bladed rotor and a bladed counter-rotor rotating in opposite direction thereto, which together form a working chamber filled with working medium in braking operation and emptied of working medium in non-braking operation, wherein the rotor is driven in braking operation via a drive train with a closed separating clutch and the working chamber is emptied when passing from the braking operation to the non-braking operation, wherein the transition from the braking operation to the non-braking operation is initiated via a retarder switch-off request of a driver assistance system or via actuation of an input device by the vehicle driver. | 06-05-2014 |
20140182983 | Disconnectable Hydrodynamic Retarder and Method for Controlling Same - The invention concerns a hydrodynamic retarder | 07-03-2014 |
20140311840 | Hydrodynamic Retarder and Method for Actuating Same - The invention relates to a hydrodynamic retarder comprising a rotor that revolves in a decelerating mode and a counter-rotating twin rotor or a stationary stator which jointly from a working chamber that is or can be filled with a working medium. The rotor can be driven using driving power via a drive train in order to decelerate the drive train. The invention is characterized in that an energy storage device is associated with or integrated into the retarder, said energy storage device comprising a mechanical energy store, pressure accumulator or kinetic energy store as well as an acceleration mechanism that is connected to the rotor, said acceleration mechanism being linked to the energy store and the rotor or being integrated into the rotor in order to convert energy stored in the energy store into an angular acceleration of the rotor. | 10-23-2014 |
20140330495 | MOTOR VEHICLE DRIVE TRAIN COMPRISING A HYDRODYNAMIC RETARDER THAT CAN BE DISENGAGED, AND CONTROL METHOD THEREFOR - The invention relates to a motor vehicle drive train including a hydrodynamic retarder that comprises a revolving bladed impeller and a stationary or counter-rotating bladed turbine which jointly form a working chamber that can be filled with a working medium to switch on the retarder. The hydrodynamic retarder can be mechanically disengaged from the drive train by a disconnect clutch. The invention is characterized in that a fill level monitoring device detects the current fill level of the working medium in the working chamber, while a disconnect clutch-blocking device is effectively connected in a communicating or mechanical manner to the fill level monitoring device and prevents the disconnect clutch from engaging in accordance with the detected fill level. | 11-06-2014 |
20150184733 | MOTOR VEHICLE DRIVE TRAIN COMPRISING A HYDRODYNAMIC RETARDER - The invention concerns a motor vehicle drive train,
| 07-02-2015 |