Patent application number | Description | Published |
20080206070 | Method for Control of a Pressurised Air Supply System for a Motor Vehicle - The invention relates to a method for control of a pressurised air supply system for a motor vehicle ( | 08-28-2008 |
20090113886 | HYDRODYNAMIC MACHINE - The present invention relates to a hydrodynamic machine, especially a hydrodynamic retarder, including a bladed primary wheel and a bladed secondary wheel which are arranged opposite of each other axially with respect to their blade configurations such that they jointly form a working chamber. The working chamber can be filled with a working medium for one operating state in order to transmit torque from the primary wheel to the secondary wheel by means of a circulatory flow of the working medium. The working chamber can be emptied of the working medium for a non-operating state in order to prevent a transmission of torque from the primary wheel to the secondary wheel. A suction apparatus is connected with a fluidic connection to the working chamber in order to suck off working medium and/or air from the working chamber for forming a negative pressure in the working chamber in the non-operating state. | 05-07-2009 |
20100294611 | HYDRODYNAMIC MACHINE, IN PARTICULAR HYDRODYNAMIC RETARDER - The invention relates to a hydrodynamic machine, in particular hydrodynamic retarder,
| 11-25-2010 |
20110194948 | METHOD FOR REGULATING A COMPRESSED AIR SUPPLY SYSTEM OF A MOTOR VEHICLE - A method for regulating a compressed air supply system of a motor vehicle, the system having a driving engine for driving the motor vehicle, which can be switched via a switchable hydrodynamic coupling to a driven connection with an air compressor, so that the air compressor feeds a compressed air system via an air delivery side. | 08-11-2011 |
20110315097 | VEHICLE COOLING CIRCUIT HAVING A RETARDER OR A HYDRODYNAMIC CLUTCH - A vehicle cooling circuit, especially an engine cooling circuit, including a cooling medium pump and a vehicle drive engine and/or other heat-generating assembly cooled by means of the cooling medium. The circuit includes a hydrodynamic retarder with the working medium of the hydrodynamic retarder simultaneously also being the cooling medium of the cooling circuit, and the hydrodynamic retarder operating as the cooling medium pump. The secondary blade wheel is associated with a brake or a drive running counter to the drive of the primary blade wheel in such a way that it can optionally be fixed in a first operating state (braking operation) or be driven counter to the rotational direction of the primary blade wheel and, in a second operating state (pumping operation), can partially or completely be released such that it circulates at the speed of the primary blade wheel or at a specified speed difference slower than the primary blade wheel. | 12-29-2011 |
20120132489 | Motor Vehicle Having A Retarder - The invention relates to a motor vehicle | 05-31-2012 |
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 |
20140131153 | Hydrodynamic Retarder and Method for Controlling the Power Transmission of Such a Retarder - The invention concerns a method for controlling the power transmission of a hydrodynamic retarder, comprising a rotating bladed rotor and a bladed stator or a bladed counter-rotor rotating against the direction of rotation of the rotor, which form together a working chamber which selectively can be filled with a working medium via an inlet and can be drained via an outlet; whereas the working chamber is filled with a working medium in braking mode, and a braking torque is generated with the hydrodynamic retarder and in a non-braking mode the working chamber is emptied of working medium down to a certain residual amount and substantially no braking torque is generated with the hydrodynamic retarder. The invention is characterised by the following step: In non-braking mode, working medium is injected into the working chamber of the hydrodynamic retarder for adjusting the residual amount, said working medium being extracted from a stock of working medium, which is provided outside the working chamber in a working medium storage tank using an idle pump. | 05-15-2014 |
20140299433 | Transmission Unit - The invention relates to a transmission unit for coupling a running wheel of a hydrodynamic component to a drive element having:—a running wheel shaft directly connected to the running wheel;—a first coupling device, provided with a synchroelement, to connect an intermediate shaft, indirectly connected to the running wheel, to the drive element; The invention is characterised in that:—a second coupling device, provided with a synchroelement, is provided for at least indirect connection of the running wheel shaft to the drive element; and—the running wheel shaft and the intermediate shaft are in single-sided drive connection via a free wheel. | 10-09-2014 |