Abstract: The invention relates to a method for operating an internal combustion engine (1), in particular having compression ignition, comprising at least one SCR catalytic converter (5) in the exhaust gas system (3) and an exhaust gas recirculation valve (8), wherein the exhaust gas recirculation amount and/or the position of the exhaust gas recirculation valve (8) is controlled in accordance with the NOx concentration upstream of the SCR catalytic converter (5) in such a way that a NOx concentration (NOxI1) measured by at least one first NOx sensor (6) upstream of the SCR catalytic converter (5) corresponds to a specified NOx concentration target value (NOxs).

Abstract: The invention relates to a diagnosis method for an exhaust gas post-treatment system for the reduction of nitric oxides in the exhaust gas train of an internal combustion engine by means of selective catalytic reduction.

Abstract: An exhaust system (1) for an internal combustion engine (2), especially for a diesel engine, includes an exhaust manifold (3) inside which at least one exhaust aftertreatment device is disposed, and at least one DeNox unit that is arranged downstream from a first oxidizing catalyst (4). In order to reduce the NOx emissions a second oxidation catalyst (5) is disposed upstream of the DeNOx unit.

Abstract: A process for determining particle input into a particle filter arranged in the exhaust fume stream of an internal combustion engine makes it possible to determine the mass of deposited particles by taking into account particle and nitrogen oxide emission.

Abstract: A device and a method implementable therewith for regulating the driving speed of at least one vehicle, having an electric motor/generator connected or connectable to a drive train for at least one wheel as a function of at least its actual speed and setpoint speed. The device includes a control unit for controlling the torque of the electric motor/generator, an arrangement for driving the electric motor/generator, an arrangement for recording the actual speed of the vehicle and an arrangement for preselecting the setpoint speed of the vehicle. In the device, the electric motor/generator is usable in generator operation to generate a braking torque and in engine operation to generate a driving torque.

Abstract: The invention relates to a diagnosis method for an exhaust gas post-treatment system for the reduction of nitric oxides in the exhaust gas train of an internal combustion engine by means of selective catalytic reduction.

Abstract: A process for determining particle input into a particle filter arranged in the exhaust fume stream of an internal combustion engine makes it possible to determine the mass of deposited particles by taking into account particle and nitrogen oxide emission.

Abstract: The invention relates to a method for controlling a prime mover for a vehicle, particularly a combustion engine, comprising at least one engine control unit and at least one additional controller in the drive train. According to the invention, command variable demands are sent from the controller to the engine control unit, and the transfer function of the prime mover is at least partially depicted by means of a predetermined approximated transfer function of the prime mover.

Abstract: A method for operating an internal combustion engine is provided. By taking into account a setpoint temperature Tsetpoint of the internal combustion engine which depends on external and internal boundary conditions when controlling and/or regulating temperature-dependent functions of the internal combustion engine, fuel consumption and emission characteristics of the internal combustion engine are improved.

Abstract: A device and a method implementable therewith for regulating the driving speed of at least one vehicle, having an electric motor/generator connected or connectable to a drive train for at least one wheel as a function of at least its actual speed and setpoint speed. The device includes a control unit for controlling the torque of the electric motor/generator, an arrangement for driving the electric motor/generator, an arrangement for recording the actual speed of the vehicle and an arrangement for preselecting the setpoint speed of the vehicle. In the device, the electric motor/generator is usable in generator operation to generate a braking torque and in engine operation to generate a driving torque.

Abstract: In a method for operating a cooling and heating circuit of a motor vehicle driven by an internal combustion engine, a first cooling medium path is provided through a bypass conduit, a second cooling medium path is provided through a main cooler of the internal combustion engine, a third cooling medium is provided through a heating heat exchanger, and a fourth cooling medium path is provided through a heat accumulator. The cooling medium flows through the paths are subdivided by an electrically operated valves, and the cooling medium flows are generated by at least one pump. The valves are controlled by a control unit based on operational and environmental parameters as well as nominal values, and a third control valve which is controlled by the control unit is arranged in the fourth cooling medium path.

Abstract: A method and an arrangement are disclosed for modeling a mechatronic system in a motor vehicle in the context of an object-based ordering concept as a mapping in the unified modeling language. The elements of the CARTRONIC® with components and envelopes as their classes or objects and orders (with feedback), inquiries (with hint) and requests as their communication relationship are presented based on examples together with the essential rules from the overall control rules. A mapping requirement in the UML elements is shown for these modeling elements.

Abstract: A method for regulating the temperature of a coolant of an internal combustion engine, including a temperature sensor detecting the temperature of the coolant and a first control unit controlling and/or regulating the coolant temperature to obtain a predetermined temperature setpoint value, a further control unit being provided whose signals are fed to the first control unit, the further control unit relaying signals about an established driver type to the first control unit and, depending on whether the driver type is classified as sporty or economical, the first control unit presetting the temperature setpoint value, in which a coolant volume flow for cooling the internal combustion engine is regulated or controlled by the control unit as a function of the driver type established.

Abstract: A method is described for regulating the temperature of a coolant of an internal combustion engine, a temperature sensor detecting the temperature of the coolant and a first control unit controlling and/or regulating the coolant temperature in order to obtain a predetermined temperature setpoint value, a further control unit being provided whose signals are fed to the first control unit, the further control unit relaying signals about an established driver type to the first control unit and, depending on whether the driver type is classified as sporty or economical, the first control unit presetting the temperature setpoint value, in which a coolant volume flow for cooling the internal combustion engine is regulated or controlled by the control unit as a function of the driver type established.

Abstract: A method for operating an internal combustion engine is provided. By taking into account a setpoint temperature Tsetpoint of the internal combustion engine which depends on external and internal boundary conditions when controlling and/or regulating temperature-dependent functions of the internal combustion engine, fuel consumption and emission characteristics of the internal combustion engine are improved.

Abstract: A method for operating a cooling and heating circuit of a motor vehicle driven by an internal combustion engine, the method has the steps providing a first cooling medium path through a bypass conduit, providing a second cooling medium path through a main cooler of the internal combustion engine, providing a third cooling medium through a heating heat exchanger, providing a fourth cooling medium path through a heat accumulator, subdividing cooling medium flows through the paths by an electrically operated valves, providing the cooling medium flows by at least one pump, controlling the valves by a control unit in dependence on operational and environmental parameters as well as nominal values, arranging a third control valve which is controlled by the control unit in the fourth cooling medium path and closing the third control valve completely or partially when a reference temperature of a remaining cooling and heating circuit exceeds a nominal value provided in the control unit, and opening the third control

Abstract: A method and an arrangement automatically restarts a drive unit (1) when there is an unintended stalling of the drive unit (1). In the case of stalling, checks are made as to whether the drive unit (1) was already in a steady-state condition directly before the stalling, as to whether the stalling took place because of an operator input, especially at an input unit (5) and as to whether a force-tight connection between the drive unit (1) and a transmission (25 or 80) is present. A restart of the drive unit (1) is automatically initiated when: the drive unit (1) was already in a steady-state condition directly before the stalling; when the stalling took place in a departure from the operator input; and, when the force-tight connection between the transmission (25 or 80) and the drive unit (1) is interrupted.

Abstract: An electronic system for a vehicle includes first components for carrying out control tasks in response to operating sequences and second components that coordinate a cooperation of the components for carrying out control tasks. The first components carry out the control tasks by using operating functions and basis functions, wherein the system is constructed such that the basis functions are combined in a basis layer, and a system layer is superimposed on the basis functions, which includes at least two of the second components. At least one open interface of the system layer is provided for the operating functions, and the system layer links the basis functions to any and all operating functions, such that the operating functions can be interconnected and/or used in a modular fashion.

Abstract: A device (1) and a method implementable therewith for regulating the driving speed of at least one vehicle (3), having an electric motor/generator (17) connected or connectable to a drive train (7; 7′) for at least one wheel (11, 13; 11′, 13′) as a function of at least its actual speed and setpoint speed. The device (1) includes a control unit (31) for controlling the torque of the electric motor/generator (17), means for driving the electric motor/generator (17), means (37) for recording the actual speed of the vehicle (3) and means (39) for preselecting the setpoint speed of the vehicle (3).

Abstract: A method for operating a cooling and heating circuit of a motor vehicle driven by an internal combustion engine, the method has the steps providing a first cooling medium path through a bypass conduit, providing a second cooling medium path through a main cooler of the internal combustion engine, providing a third cooling medium through a heating heat exchanger, providing a fourth cooling medium path through a heat accumulator, subdividing cooling medium flows through the paths by an electrically operated valves, providing the cooling medium flows by at least one pump, controlling the valves by a control unit in dependence on operational and environmental parameters as well as nominal values, arranging a third control valve which is controlled by the control unit in the fourth cooling medium path and closing the third control valve completely or partially when a reference temperature of a remaining cooling and heating circuit exceeds a nominal value provided in the control unit, and opening the third control