Patent application number | Description | Published |
20100145539 | Energy Management System for a Motor Vehicle - In an energy management system for a motor vehicle, the system has an energy manager that contains a computing unit. Connected to the energy manager are a memory device and a plurality of electrical system components that include energy-producing devices, energy storage devices, and consumers of energy. Various possible operating states are assigned to each of the energy producers and energy storage devices, and these states are represented as the summation of an energy producer and of zero, one, or a plurality of what are known as virtual energy consumers. | 06-10-2010 |
20130197765 | METHOD FOR OPERATING A VEHICLE ELECTRICAL SYSTEM, A CONTROLLER AND A COMPUTER PROGRAM PRODUCT - An electrical system of a vehicle includes at least one energy store, the vehicle having an internal combustion engine and electric machine mechanically coupled thereto, an actuatable accelerator pedal for predefining a torque to be output, an engine controller for injection of fuel, and an actuatable brake pedal, using which a controller is activated at least in a first partial range of its actuation, subject to first external operating conditions, so that recuperative power of the electric machine is generated at the same time that energy is fed into the electrical system. To increase the recuperation potential, the electric machine is switched to recuperative power by the controller in an operating phase in which a driver request is inferred due to actuations of the accelerator pedal, resulting in a braking power of the vehicle, the injection of the internal combustion engine being maintained due to second internal operating conditions. | 08-01-2013 |
20130214707 | METHOD AND DEVICE FOR CONTROLLING AN ELECTRIC MACHINE - In a method for predefining a generator-based braking power of an electric machine in a vehicle, a motor-based propulsion power is predefined as a function of the position of a first final control element, e.g., an accelerator pedal, and the generator-based braking power is predefined as a function of the position of the first final control element, the generator-based braking power assuming values which are unequal to zero, already at an actuated position of the first final control element. | 08-22-2013 |
20130221935 | METHOD AND DEVICE FOR OPERATING A GENERATOR IN A RECUPERATION SYSTEM OF A MOTOR VEHICLE - A setpoint for a mechanical torque of a generator in a recuperation system of a motor vehicle is specified, and a generator current of the generator for setting the specified mechanical torque of the generator is set. | 08-29-2013 |
20130311022 | METHOD AND DEVICE FOR CONTROLLING AN INTERNAL COMBUSTION ENGINE - A device for operating a drivetrain, which drivetrain includes an electrical machine, has an energy management unit and an electrical machine management unit. The energy management is configured for transmitting a desired electrical, and/or a lower electrical limit, and/or an upper electrical limit power to the electrical machine management unit. | 11-21-2013 |
20130319352 | METHOD FOR LOWERING THE AIR TEMPERATURE OF AN ENGINE COMPARTMENT OF A VEHICLE - In a method for lowering the air temperature of an engine compartment of a vehicle accommodating an internal combustion engine, an air-fluid heat exchanger having at least one cooling element for cooling the air-fluid heat exchanger, and an electric drive, the at least one cooling element is activated as a function of the temperature of a fluid side of the air-fluid heat exchanger and as a function of a temperature of the electric drive. | 12-05-2013 |
20140368031 | METHOD AND DEVICE FOR ADAPTING A VOLTAGE LIMIT IN AN ONBOARD ELECTRICAL SYSTEM - A method is described for controlling a voltage limit for a maximally permissible operating voltage in an on-board electrical system of a vehicle, including the step of adapting the voltage limit in dependence on vehicle data, wherein an actual voltage is ascertained and the actual voltage is short-circuited or limited if the actual voltage exceeds the voltage limit. Also described is a device for controlling a voltage limit for a maximally permissible operating voltage in an on-board electrical system of a vehicle, having an adaptation device for adapting the voltage limit in dependence on vehicle data. | 12-18-2014 |
20150051820 | Method for Preparing the Start-Up of an Internal Combustion Engine With the Aid of a Belt-Driven Starter Generator - A method for preparing a start-up of an internal combustion engine with a belt-driven starter generator having a stator and rotor windings, the starter generator being operated so that its generated torque slowly increases over a period of more than two rotor winding-time constants. The stator winding is energized so that the generated torque slowly increases over a period of more than two rotor winding-time constants. The rotor winding is energized and, when a field current through the rotor winding is below a lower threshold value prior to the beginning of its energization, the stator winding is energized, before the field current is above an upper threshold value. The belt of the starter generator is pre-tensioned prior to the actual starting operation by activating the electric machine so that jolts, vibrations and noises, which occur during the start-up of the internal combustion engine with a starter generator, may be avoided. | 02-19-2015 |