Abstract: A method is described for determining a cylinder charge of an internal combustion engine by using a model. The rotational speed of the internal combustion engine, its intake manifold pressure, its intake manifold temperature, its exhaust gas mass flow, its external exhaust gas recirculation, a starting variable of a model for internal residual gas determination, a valve control time, a valve lift, as well as a variable for the characteristic curve of an operating mode switchover of the internal combustion engine are used as input variables of model.

Abstract: Suggested is a procedure for operating a self-igniting Otto engine (OM) with at least one inlet valve (14), with one or several variably controllable outlet valves (15), with a sensor (21) for a continuous detection of an air-fuel-ratio (?) of the Otto engine (OM) and with a sensor (22) for detecting an engine speed n of the Otto engine (OM), whereby the fuel is directly injected into at least one combustion chamber (10) and whereby the Otto engine (OM) is operated in such a way, that a desired combustion focus (MFB50%set) is adjusted. The procedure is thereby characterized, in that the self-igniting moment of the fuel is influenced by an injection moment depending on a combustion focus (MFB50%set). An independent claim relates to a control unit that is customized for controlling the process of the procedure.

Abstract: Procedure for the transition of an internal combustion engine, particularly a gasoline engine with direct gasoline injection and with a partially variable valve-train assembly, from an initial mode of operation into a target mode of operation, whereby the initial mode of operation and the target mode of operation are either a mode of operation with an externally-supplied ignition or one with self-ignition. The procedure comprises the procedural steps: Adaptation of the operating parameters of the initial mode of operation to the required values for the target mode of operation in a map-based pilot control phase Changeover of the mode of operation after the map-based pilot control phase Closed-loop control of the operating parameters after the changeover.

Abstract: Suggested is a procedure for operating a self-igniting Otto engine (OM) with at least one inlet valve (14), with one or several variably controllable outlet valves (15), with a sensor (21) for a continuous detection of an air-fuel-ratio (?) of the Otto engine (OM) and with a sensor (22) for detecting an engine speed n of the Otto engine (OM), whereby the fuel is directly injected into at least one combustion chamber (10) and whereby the Otto engine (OM) is operated in such a way, that a desired combustion focus (MFB50%set) is adjusted. The procedure is thereby characterized, in that the self-igniting moment of the fuel is influenced by an injection moment depending on a combustion focus (MFB50%set). An independent claim relates to a control unit that is customized for controlling the process of the procedure.

Abstract: In an internal combustion engine, gasoline is injected directly into a combustion chamber and ignited by auto-ignition. The characteristics map range within which fuel is ignited by auto-ignition is enlarged by supercharging the internal combustion engine.

Abstract: A method for operating an internal combustion engine in a state of controlled self-ignition. The internal combustion engine includes a combustion chamber, at least one intake valve and at least one exhaust valve whose opening times can be changed. A fresh mixture is introduced into the combustion chamber during an intake stroke and an ignitable gas mixture is produced in the combustion chamber by way of the introduction of fuel and compressed in a compression stroke, whereby the gas mixture self-ignites toward the end of the compression stroke.The fresh mixture is introduced into the combustion chamber by way of a compression mechanism during the intake stroke.

Abstract: Procedure and device for the operation of a gasoline engine with direct gasoline injection and with a variable valve-train assembly in a mode of operation with self-ignition, in which when a deviation by the actual values of physical parameters characterizing a combustion from set point values occurs in a work cycle, a closed-loop control of the actual values results in such a way that in succeeding work cycles, conditions, particularly a thermodynamic state of a combustible gas in a combustion chamber, exist for the mode of operation with self-ignition.

Abstract: In an internal combustion engine, gasoline is injected directly into a combustion chamber and ignited by auto-ignition. The characteristics map range within which fuel is ignited by auto-ignition is enlarged by supercharging the internal combustion engine.

Abstract: A method for the transition of a gasoline engine with direct gasoline injection and with a variable valve train assembly from an initial mode of operation to a target mode of operation, whereby the initial mode of operation and the target mode of operation are either a mode of operation with an externally-supplied ignition or a mode of operation with a self-ignition, wherein the method comprises adapting operating parameters of the initial mode of operation to required values for the target mode of operation in a map-based pilot control phase; shifting the mode of operation after the map-based pilot control phase; and controlling the operation parameters after the shift.

Abstract: A method of operating an internal combustion engine with direct gasoline injection and controlled self-ignition, wherein the internal combustion engine includes a combustion chamber, at least one intake valve and at least one exhaust valve each having an adjustable opening time. The method includes compressing an ignitable gas mixture that contains residual gas in the combustion chamber during a compression stroke, where the gas mixture self ignites, and altering step-wise over multiple combustion cycles at least one of a residual gas volume and a point of injection time to an interim value other than a value assigned to a target load during a load transfer from an initial load to the target load.

Abstract: In a method for operating an internal combustion engine, particularly an Otto engine having direct gasoline injection in controlled self-ignition, the internal combustion engine including a combustion chamber, at least one intake valve and at least one exhaust valve, whose opening times are variable, and a fuel-air-exhaust gas mixture is introduced into a combustion chamber and is compressed in a compression stroke; the fuel-air mixture self-igniting towards the end of the compression stroke, a controlled self-ignition is made possible in wide load ranges by varying the opening times of the intake valve and the exhaust valve as a function of the load.

Abstract: In an internal combustion engine, gasoline is injected directly into a combustion chamber and ignited by auto-ignition. The characteristics map range within which fuel is ignited by auto-ignition is enlarged by supercharging the internal combustion engine.

Abstract: Methods and devices of operating an internal combustion engine, especially a gasoline engine with direct gasoline injection, in a controlled self-ignition. The internal combustion engine includes a combustion chamber, at least one intake valve and at least one exhaust valve, whose opening times are changeable. The internal combustion engine also includes an adjustable exhaust gas recirculation and a gas mixture capable of ignition, which contains the residual gas, which is compressed in the combustion chamber during a compression stroke, whereby the gas mixture self-ignites toward the end of the compression stroke. The residual gas moves into, respectively remains in, the combustion chamber by using internal and external exhaust gas recirculation.

Abstract: The invention concerns a procedure for the braking of a vehicle, especially a motor vehicle, that is operated by a combustion engine, at which the braking torque is initiated into a drive train of the vehicle, by compressing gas in at least one cylinder of the combustion engine during the compression stroke and by discharging the compressed gas at the end of the compression stroke through at least one opened outlet valve from the cylinder. It is provided that the outlet valve is slightly opened before or during the compression stroke and widely opened at the end of the compression stroke.

Abstract: Method for the operation of an internal combustion engine, wherein the internal combustion engine comprises a combustion chamber, at least one intake valve and at least one exhaust valve, whose opening times are adjustable, wherein fresh mixture is introduced into the combustion chamber during an intake stroke; and by the introduction of fuel, an ignitable gas mixture is produced in the compression chamber and is compressed during a compression stroke and wherein the gas mixture is ignited toward the end of the compression stroke, thereby characterized, in that the fresh mixture is introduced into the combustion chamber during the intake stroke by means of a compression device and in that the intake valve is closed in such a way that the geometric compression is reduced in comparison to a closing angle, which optimal for combustion.

Abstract: Procedure for the operation of an internal combustion engine, particularly a gasoline engine with direct gasoline injection and controlled self-ignition, whereby the internal combustion engine (1) comprises a combustion chamber (2), at least one intake valve (EV) and at least one exhaust valve (AV), whose opening times can be altered, and an ignitable gas mixture, which contains residual gas, is compressed in the combustion chamber (2) during a compression stroke (V), whereby the gas mixture self ignites during the compression stroke (V). During a load transfer from an initial load to a target load, the residual gas volume and/or the point of injection time is altered for at least one power stroke to an interim value other than the value assigned to the target load.

Abstract: In an internal combustion engine, gasoline is injected directly into a combustion chamber and ignited by auto-ignition. The characteristics map range within which fuel is ignited by auto-ignition is enlarged by supercharging the internal combustion engine.

Abstract: A method for the transition of a gasoline engine with direct gasoline injection and with a variable valve train assembly from an initial mode of operation to a target mode of operation, whereby the initial mode of operation and the target mode of operation are either a mode of operation with an externally-supplied ignition or a mode of operation with a self-ignition, wherein the method comprises: adaptating operating parameters of the initial mode of operation to required values for the target mode of operation in a map-based pilot control phase; shifting the mode of operation after the map-based pilot control phase; and controlling the operating parameters after the shift.

Abstract: Method for operating an internal combustion engine in a state of controlled self-ignition, wherein the internal combustion engine comprises a combustion chamber, at least one intake valve) and at least one exhaust valve, whose opening times can be changed, and wherein the fresh mixture is introduced into the combustion chamber during an intake stroke and an ignitable gas mixture is produced in the combustion chamber by way of the introduction of fuel and compressed in a compression stroke, whereby the gas mixture self-ignites toward the end of the compression stroke. The fresh mixture is introduced into the combustion chamber by way of a compression mechanism during the intake stroke.

Abstract: Procedure to operate an internal combustion engine, especially a gasoline engine with direct gasoline injection, in a controlled self-ignition, whereby the internal combustion engine comprises a combustion chamber at least one intake valve and at least one exhaust valve, whose opening times are changeable, and comprises as well an adjustable exhaust gas recirculation and a gas mixture capable of ignition, which contains the residual gas, which is compressed in the combustion chamber during a compression stroke, whereby the gas mixture self-ignites toward the end of the compression stroke. The residual gas moves into, respectively remains in, the combustion chamber by means of internal and external exhaust gas recirculation.