Patent application number | Description | Published |
20110196596 | METHOD AND DEVICE FOR PREVENTING WATER DAMAGE IN INTERNAL COMBUSTION ENGINES - A method for preventing a water impact in an internal combustion engine includes: detecting whether water has entered an air supply system of the internal combustion engine; and stopping the internal combustion engine if it is determined that water has entered. | 08-11-2011 |
20120046813 | Method and system for operating an electrical machine, controlled by an inverter, in a motor vehicle in a fault situation - An electrical machine in a motor vehicle is controlled by an inverter, which motor vehicle has an automatically or manually actuatable transmission. The electrical machine generates, in generator mode, electrical energy that is stored in an energy reservoir. In a fault situation, at least one variable characterizing the charge state of the energy reservoir is detected and compared with a predefined lower threshold value, and upon a shortfall below the lower threshold value, the electrical machine is switched into a freewheeling mode by opening the inverter's switching elements. For an automatic transmission, a higher transmission ratio than a present transmission ratio is additionally established; for a manual transmission, the driver is notified by a message that a lower gear needs to be engaged. | 02-23-2012 |
20120081221 | Vehicle, in particular a hybrid vehicle, having an electrical device - In a vehicle, e.g., a hybrid vehicle, having an electrical device, which has an inadmissibly high voltage for being touched by a person, a signaling sensor configured to respond in the event of an accident is connected to a warning device for signaling the voltage level. | 04-05-2012 |
20120200248 | METHOD FOR MONITORING A DRIVE STATE OF AN ELECTRIC MOTOR - A method for monitoring a drive state, particularly a non-driven drive state of an electric motor, which is fed with energy using a bridge inverter having at least one half bridge, having detecting of a state of the at least one half bridge, detecting a property of a control signal for driving the at least one half bridge, and monitoring the drive state based on the detected state of the at least one half bridge and the detected property of the control signal. | 08-09-2012 |
20120278007 | METHOD FOR CHECKING THE PLAUSIBILITY OF THE TORQUE OF AN ELECTRIC MACHINE AND MACHINE CONTROLLER FOR CONTROLLING AN ELECTRIC MACHINE AND FOR CARRYING OUT THE METHOD - A method for checking the plausibility of a torque of an electric machine, calculated on the basis of a machine model, in which a first value of an electromagnetic power of the electric machine is determined from the calculated torque and a rotational speed of the electric machine. Stator current components and stator phase voltage components are calculated from the stator currents and the stator phase voltages with respect to a reference system, which is fixed in relation to the stator. A second value of the electromagnetic power of the electric machine is determined from the stator current components and the stator phase voltage components. If a deviation of the first value of the electromagnetic power of the electric machine from the second value exceeds a predefined power threshold value, the torque of the electric machine, calculated on the basis of the machine model, is classified as implausible. | 11-01-2012 |
20130187585 | METHOD FOR OPERATING AN AT LEAST THREE-PHASE ELECTRIC MACHINE, USED AS A DRIVE ASSEMBLY IN A MOTOR VEHICLE, AND CONTROL UNIT FOR AN INVERTER - In a method for operating an at least three-phase electric machine used as a drive assembly in a motor vehicle, which is actuated via an inverter, the inverter including switching elements in the form of half bridges which are in each case electrically connected to a respective phase of the electric machine, when a first switching element of a first half bridge connected to a first phase is permanently closed/opened on account of failure, a second switching element of the first half bridge is permanently opened/closed and, in a first angular range of an electrical rotation, which is uninfluenced by the first phase, all switching elements of the additional half bridges are actuated in the usual manner. | 07-25-2013 |
20130317686 | METHOD AND DEVICE FOR OPERATING AN ELECTRIC MACHINE OF A MOTOR VEHICLE DRIVE TRAIN - A method for operating an electrical machine, in particular for making available drive power for a drive train of a motor vehicle, the electrical machine being controlled by several phase currents, the method including sensing an electrical variable that represents the torque delivered by the electrical machine; and monitoring the torque. A degradation of the electrical machine is taken into consideration in the monitoring of the torque. | 11-28-2013 |
20130338872 | METHOD AND DEVICE FOR INITIATING AN OPERATION OF A MOTOR VEHICLE UNDER EMERGENCY CONDITIONS - A method for initiating an operation under emergency conditions of a motor vehicle, the method including detecting a malfunction of a component of the motor vehicle; checking whether an operation under emergency conditions is possible; reporting the malfunction to the driver; initiating the operation under emergency conditions under predefined conditions, the operation under emergency conditions being initiated following an active confirmation by the driver. | 12-19-2013 |