Abstract: A turbo-machine (1), including a stator (2), internally coated with a running-in layer (6), a rotor (4) within the stator (2), wherein the turbo-machine (1) supplementally includes a device for parallel displacement and rotation of the rotation axis of the rotor (10) about the axis of symmetry of the stator (2). By means of this device the gap width between stator (2) and rotor (4) is minimized and therewith the economy of the turbo-machine (1) is increased.
Abstract: An electrochemical fuel cell stack having staggered fuel and oxidant plenums is disclosed. This construction allows for reduced cell pitch without reducing plenum thickness and hence fluid flow.
Abstract: A main shaft for a transmission or a countershaft for a transmission shall be constructed in an especially light-weight manner. The transmission of high torques, such as is the case for the main shaft or countershaft for a transmission, is problematic when the base body of the shaft consists of a fiber composite material. A metal element (20, 22) is now laminated into the base body, and a gearwheel (28, 30) can then be connected to this metal element (20, 22) in a force-fit manner, so that high torques can be transmitted.
Abstract: A turbine housing for a turbine wheel of an exhaust gas turbocharger, is formed from a casting material and comprises at least two flow chambers that are separated from each other by a flow separator. The flow separator is embodied as a separate insert especially as a sheet metal part or a cast part, that is embedded into a wall region of the housing.
Abstract: A power supply system for a vehicle has at least one control unit with two power supply terminals that are each protected against overload by a fuse. The first power supply terminal is connected to a voltage regulator for the microcomputer of the control unit and to the accumulator via the quiescent current switch, while the second power supply terminal is connected to the accumulator via a fuse. The first power supply terminal supplies the microcomputer with energy, while the second power supply terminal actuates one power switch per control unit in order to supply energy to the output stages of an actuator which is operated by the control unit. The on-board vehicle power system control unit activates the quiescent current switch in order to deactivate the microcomputer, while the power switches of the same control unit are supplied with power.
Type:
Application
Filed:
August 30, 2007
Publication date:
December 9, 2010
Applicant:
Daimler AG
Inventors:
Sven Fluhrer, Dieter Grohmann, Peter Herges, Frank Huebner, Alexander Lepple, Tobias Raithel
Abstract: A drive system for an electrical machine is provided. The system includes a control unit and a monitoring unit, which is independent of the control unit. The control unit includes a device that converts one or more incoming operating parameters of the electrical machine to an output value. The monitoring unit includes a device that converts the operating parameters to a comparison value, with the conversion being carried out more quickly in the control unit than in the monitoring unit. A comparator compares the output value or an intermediate value of the output value with the comparison value of the output value or of the intermediate value.
Abstract: In a method for determining an NO2 concentration and/or a concentration ratio of NO2 and NO in an exhaust tract of a combustion device, such as an internal combustion engine, an NOx sensor that is sensitive with respect to NO2 and NO is utilized, which provides a NOx output signal correlating with an NOx concentration representing the sum of the concentrations of NO2 and NO. In order to determine the NO2 concentration and/or the concentration ratio of NO2 and NO, the NOx output signal of a first NOx sensor, which is arranged upstream of an exhaust gas treatment element arranged in the exhaust tract and having the capability of converting NO to NO2 and/or converting NO2 to NO, is compared to the NOx output signal of a second NOx sensor, which is disposed downstream of the exhaust gas treatment element.
Abstract: The present invention relates to a wind blocker arrangement (1) for a personal vehicle embodied as a cabriolet, having a roller device (5) comprising a shaft (12) and a material web (7) that may be rolled onto the shaft (12), having a bow (8) to which the material web (7) is attached and by means of which the material web (7) may be unwound from the shaft (12), and having two lateral arms (9) that, when the material web (7) is extended, are disposed in the region of the lateral edges (14) of the material web (7) and that are pivotable transversely to the rotational axis (13) of the shaft (12). A particularly compact and comfortable construction may be achieved if the arms (9) are drive-coupled to the bow (8) such that the arms (9) pivoting open causes the bow (8) to pull out the material web (7).
Type:
Application
Filed:
September 19, 2008
Publication date:
November 18, 2010
Applicant:
Daimler AG
Inventors:
Peter Lehmann, Uwe Skrzypek, Engelbert Wolpert
Abstract: In a method for controlling, and a control device of, an automated non-synchromesh multi-speed motor vehicle transmission, wherein, upon selection of a target gear, a form-fitting connection is to be established between shift elements of the target gear, wherein, however, with a certain rotational speed difference between the shift elements which causes chattering, no engagement takes place during actuation of the shift actuator for the target gear, when, upon monitoring, a certain chattering of the shift elements is detected, and, as a result, the engagement of the target gear is aborted in order to prevent the transmission from being damaged.
Type:
Grant
Filed:
May 16, 2008
Date of Patent:
November 9, 2010
Assignee:
Daimler AG
Inventors:
Manfred Guggolz, Werner Hillenbrand, David Ulmer, Markus Veit
Abstract: A fuel cell system comprising a fuel cell stack and at least one hydration sensor apparatus for measuring membrane hydration in the fuel cell stack is disclosed. The hydration sensor apparatus comprises (1) an electrically insulated sensor comprising a polymer electrolyte membrane, (2) a power supply, and (3) a load resistor. The sensor, the power supply and the load resistor of the hydration sensor apparatus are electrically connected and the sensor of the hydration sensor apparatus is fluidly connected to the fuel cell stack such that, during operation of the fuel cell system, the polymer electrolyte membrane of the hydration sensor apparatus is exposed to a fuel fluid stream of the fuel cell stack.
Abstract: In a gas exchange valve actuating device having a lever for transmitting a drive movement to at least one gas exchange valve of an engine braking control unit of an internal combustion engine, the internal combustion engine includes a compact braking control unit which is coupled to the valve operating lever for controlling actuation of the gas exchange valves in a braking mode of engine operation.
Abstract: In a camshaft operating unit having a friction torque variation simulation arrangement for controlling a camshaft adjustment device with at least two camshafts one of which is at least adjustable camshaft and at least one camshaft adjusting unit, the friction torque variation simulation arrangement is provided to simulate a friction torque camshaft required to rotate the camshaft.
Type:
Grant
Filed:
November 26, 2007
Date of Patent:
November 9, 2010
Assignee:
Daimler AG
Inventors:
Matthias Gregor, Jens Meintschel, Thomas Stolk, Alexander Von Gaisberg-Helfenberg
Abstract: In a gas exchange valve operating apparatus with at least one overhead camshaft for actuating the gas exchange valves, with a hydraulic medium supply passage extending through the camshaft and with at least one hydraulic switchable support unit cooperating with a lever-like cam follower which is disposed on a switchable support unit and on a gas exchange valve and is furthermore in contact with the overhead camshaft, the support unit is disposed in communication with at least one pressure medium supplied via the hydraulic medium supply passage of the camshaft.
Type:
Grant
Filed:
November 2, 2007
Date of Patent:
November 9, 2010
Assignee:
Daimler AG
Inventors:
Hans Kofler, Robert Niklas, Christoph Reckzügel