Abstract: The invention concerns a method for operating an internal combustion engine (1, 18) having a plurality of combustion chambers (4), in the case of which the combustion chambers (4) are charged with fuel and air or with a fuel/air mixture. In order to prevent torque jumps from occurring when cylinders (3) of the internal combustion engine (1, 18) are shut down and when switching the operating mode of direct-injection internal combustion engines (18), it is proposed that the charging of the combustion chambers (4) with fuel and air or with a fuel/air mixture be controlled individually via open-loop or closed-loop control for each combustion chamber (4). In the case of a direct-injection internal combustion engine (18), a certain number of combustion chambers (4) can be operated with homogenous-charge operation, and the remaining combustion chambers (4) can be operated with stratified-charge operation in accordance with the level of torque required.

Abstract: A method for operating an internal combustion engine is provided, such as, for example, in a motor vehicle, in which at least two different fuels are simultaneously supplied to at least one combustion chamber of the internal combustion engine.

Abstract: A method and a device for controlling the drive unit of a vehicle are provided, setpoint selection variables and characteristic variables being received, which represent the way the setpoint selection variable is set. In a coordinator, setpoint selection variables and characteristic variables are coordinated independently from one another and one of the variables is selected, on which the control of the drive unit is based. In a converter, the selected setpoint selection variable and characteristic variable are converted into control signals, the control signals being selected on the basis of the setpoint selection variable and the characteristic variable, optionally considering further operating variables, for example, the operating state of the drive unit.

Abstract: A device for regulating the energy supply for the ignition of an internal combustion engine including an ignition coil and a central control unit, the ignition coil including a primary winding and an ignition power module connected to the primary winding. The central control unit ascertains a time difference between the beginning of current flow through the primary winding and the reaching of a first threshold value of the primary current, and in the light of the time difference, the central control unit determines an additional power loss of the ignition power module and/or active energy reduction, caused by interturn short circuits in the primary winding. When the additional power loss of the ignition power module exceeds a power loss threshold value, the ignition power module is switched off.

Abstract: The invention concerns a method for operating an internal combustion engine (1, 18) having a plurality of combustion chambers (4), in the case of which the combustion chambers (4) are charged with fuel and air or with a fuel/air mixture. In order to prevent torque jumps from occurring when cylinders (3) of the internal combustion engine (1, 18) are shut down and when switching the operating mode of direct-injection internal combustion engines (18), it is proposed that the charging of the combustion chambers (4) with fuel and air or with a fuel/air mixture be controlled individually via open-loop or closed-loop control for each combustion chamber (4). In the case of a direct-injection internal combustion engine (18), a certain number of combustion chambers (4) can be operated with homogenous-charge operation, and the remaining combustion chambers (4) can be operated with stratified-charge operation in accordance with the level of torque required.

Abstract: A method for operating an internal combustion engine is provided, such as, for example, in a motor vehicle, in which at least two different fuels are simultaneously supplied to at least one combustion chamber of the internal combustion engine.

Abstract: A device for regulating the energy supply for the ignition of an internal combustion engine having an ignition coil and a central control unit (16) is proposed, the ignition coil having a primary winding (4) and an ignition power module (13) connected to the primary winding (4). The central control unit ascertains a time difference between the beginning of current flow through the primary winding (4) and the reaching of a first threshold value of the primary current, and in the light of the time difference, the central control unit (16) determines an additional power loss of the ignition power module (13) and/or active energy reduction, caused by interturn short circuits in the primary winding (4). When the additional power loss of the ignition power module (13) exceeds a power loss threshold value, the ignition power module is switched off.

Abstract: A method for adjusting the torque in an internal combustion engine is introduced having the steps: determining a desired torque; determining an operating point from measured values for air charge and rpm; determining a standard torque for this operating point; determining a desired efficiency from standard torque and desired torque; determining the lambda corresponding to this efficiency; determining the fuel quantity from the corresponding lambda and the air charge derived from measurement quantities. The fuel quantity in combination with the air charge yields the corresponding lambda for realizing the desired torque.

Abstract: A method and an arrangement for operating internal combustion engines is suggested which is operated in at least one operating state with a lean air/fuel mixture. The fuel mass, which is to be injected, or the injection time, which is to be outputted, is determined in dependence upon a desired value. For monitoring the operability, the actual torque of the engine is determined on the basis of the fuel mass, which is to be injected, or the injection time, which is to be outputted, or the outputted injection time and compared to a maximum permissible torque and a fault reaction is initiated when the actual torque exceeds the maximum permissible torque. Parallel to the above, a quantity, which represents the oxygen concentration in the exhaust gas, is compared to at least one pregiven limit value and a fault reaction is initiated when this quantity exceeds the limit value.

Abstract: The invention is directed to a method for determining the actual torque of an internal combustion engine having gasoline direct injection. In the method, the torque of the engine is computed with a model in dependence upon operating variables. A value for the maximum torque, which would be achieved under standard conditions, is specified from a pregiven characteristic field in dependence upon operating variables which characterize an operating point of the engine. An efficiency is inputted for at least one torque-influencing actuating variable of the engine with the efficiency being formed in dependence upon a current or present value of the actuating variable and a standard value of the actuating variable. The maximum torque is corrected with the efficiency to determine the actual torque. The invention is also directed to an arrangement for determining the actual torque of the engine.