Abstract: A method for operating a combustion engine is disclosed. In an embodiment, the method includes: generating several sparks to ignite a fuel-air mixture in a combustion chamber by an ignition device of the combustion engine, determining a combustion duration of at least one of the sparks, detecting a deviation of an actual operation from a target operation of the combustion engine at least depending on the combustion duration, compensating for the deviation by implementing at least one measure which influences a combustion of the fuel-air mixture in the combustion chamber, determining the combustion duration of the chronological first of the sparks, allocating the first spark to a first spark type or to a second spark type depending on the combustion duration, and implementing the at least one measure if at least one value which characterizes a frequency of one of the spark types exceeds a threshold value.

Abstract: A method for operating a combustion engine is disclosed. In an embodiment, the method includes: generating several sparks to ignite a fuel-air mixture in a combustion chamber by an ignition device of the combustion engine, determining a combustion duration of at least one of the sparks, detecting a deviation of an actual operation from a target operation of the combustion engine at least depending on the combustion duration, compensating for the deviation by implementing at least one measure which influences a combustion of the fuel-air mixture in the combustion chamber, determining the combustion duration of the chronological first of the sparks, allocating the first spark to a first spark type or to a second spark type depending on the combustion duration, and implementing the at least one measure if at least one value which characterizes a frequency of one of the spark types exceeds a threshold value.

Abstract: In an internal combustion engine having at least one cylinder with a combustion chamber formed between a piston and a cylinder head, inlet and outlet ducts formed in the cylinder head, a fuel injector arranged in the cylinder head into for forming a hollow fuel cone in the combustion chamber and a spark plug arranged such that, during The injection of fuel, the electrodes of the spark plug are outside the injected hollow fuel cone, the spark plug and the fuel injector are positioned in such a way that a first distance (C) is provided between an injector axis and a free end of the central electrode of the spark plug, and the cylinder bore has a diameter (D), with a ratio (C/D) of the first distance (C) and a bore diameter (D) being in a range of 0.1 to 0.19, in particular 0.13 to 0.17.

Abstract: In an internal combustion engine comprising at least one cylinder including a combustion chamber formed between a piston and a cylinder head including inlet and exhaust ports, an outwardly opening injection nozzle for injecting fuel in the form of a hollow cone into the combustion chamber and a spark plug mounted in the cylinder head, the spark plug is positioned at a distance B from the exhaust port axis and the cylinder bore having a diameter D such that the ratio B/D is between 0.02 and 0.13, in particular between 0.04 and 0.1.

Abstract: In an internal combustion engine having at least one cylinder in which a combustion chamber is delimited between a piston and a cylinder head which includes at least one intake duct, at least one exhaust duct, a fuel injector arranged in the cylinder head and having outwardly opening injection nozzle through which fuel is injected into the combustion chamber in the form of a hollow cone, and a spark plug arranged in the combustion chamber (4) in such that the electrodes of the spark plug (7) are situated outside the injected hollow fuel cone formed during fuel injection, the fuel injector is positioned in the cylinder head in such a way that a first spacing (E) is provided between a fuel outlet opening and an intake passage axis, and the cylinder bore having a diameter (D), wherein a first ratio (E/D) is provided in a range from 0.15 to 0.22.

Abstract: In an internal combustion engine having at least one cylinder with a combustion chamber formed between a piston and a cylinder head, at least one inlet duct and at least one outlet duct formed in the cylinder head, a fuel injector arranged in the cylinder head so as to project into the combustion chamber and having an outwardly opening injection nozzle through which fuel in the form of a hollow cone is injected into the combustion chamber and a spark plug arranged in the combustion chamber in such a way that, during the injection of fuel, the electrodes of the spark plug are outside the injected hollow cone of fuel, the spark plug and the fuel injector are positioned in such a way that a first distance (c) is provided between an injector axis and a free end section of the central electrode of the spark plug, and the cylinder bore has a diameter (D), with a ratio (C/D) of the first distance (C) and a bore diameter (D) being in a range of 0.1 to 0.19, in particular 0.13 to 0.17.

Abstract: In an internal combustion engine comprising a cylinder-head with at least one combustion chamber in the cylinder head and the cylinder head has at least one intake passage and one exhaust passage, and an external exhaust gas recirculation line which branches off from the exhaust passage and opens at least into one of the intake passages, a pivotable flap is arranged between the exhaust gas recirculation passage and the associated intake passage in the region where the exhaust gas recirculation line is connected to the intake passage, the flap opening or closing a connection between the intake passage and the exhaust gas recirculation passage as a function of the pivoting position adjustment of the flap.

Abstract: Method for operating an internal combustion engine in which fuel is injected into a combustion chamber by an injector. The injector has a drivable piezo-actuator. A setpoint value is generated for driving the piezo-actuator. A setpoint charge quantity (QCsetpoint) is determined from the setpoint value, and an actual charge quantity (QCactual) supplied to the piezo-actuator is determined. The setpoint charge quantity (QCsetpoint) and the actual charge quantity (QCactual) are combined, and the combined result (Son) acts upon the drive circuit of the piezo-actuator.

Abstract: In an internal combustion engine comprising a cylinder-head with at least one combustion chamber in the cylinder head and the cylinder head has at least one intake passage and one exhaust passage, and an external exhaust gas recirculation line which branches off from the exhaust passage and opens at least into one of the intake passages, a pivotable flap is arranged between the exhaust gas recirculation passage and the associated intake passage in the region where the exhaust gas recirculation line is connected to the intake passage, the flap opening or closing a connection between the intake passage and the exhaust gas recirculation passage as a function of the pivoting position adjustment of the flap.

Abstract: Method for operating an internal combustion engine in which fuel is injected into a combustion chamber by an injector. The injector has a drivable piezo-actuator. A setpoint value is generated for driving the piezo-actuator. A setpoint charge quantity (QCsetpoint) is determined from the setpoint value, and an actual charge quantity (QCactual) supplied to the piezo-actuator is determined. The setpoint charge quantity (QCsetpoint) and the actual charge quantity (QCactual) are combined, and the combined result (Son) acts upon the drive circuit of the piezo-actuator.

Abstract: A cylinder head for an internal combustion engine includes a spark plug 3, provided in combustion chamber 2, and an injection nozzle 1 that has a housing end face 27 and a closure element 6 which is movable by an actuator and has a closure member 10, the housing end face 17 of the injection nozzle 1 forming a common, planar surface with the closure member 10 in the closed state of the injection nozzle 1.

Abstract: A method for the formation of a combustible fuel/air mixture in a combustion chamber of a direct-injection internal combustion engine with an injection nozzle, which has a closure body includes the steps of injecting at least two partial quantities of fuel into the combustion chamber and moving the closure body of the injection nozzle into its closed position after the injection of each of the partial quantities of fuel.

Abstract: The present invention relates to a cylinder head for an internal combustion engine having a spark plug 3, provided in combustion chamber 2, and an injection nozzle 1 that has a housing end face 27 and a closure element 6 which is movable by an actuator and has a closure member 10, the housing end face 17 of the injection nozzle 1 forming a common, planar surface with the closure member 10 in the closed state of the injection nozzle 1.

Abstract: A method for the formation of a combustible fuel/air mixture in a combustion chamber of a direct-injection internal combustion engine with an injection nozzle, which has a closure body includes the steps of injecting at least two partial quantities of fuel into the combustion chamber and moving the closure body of the injection nozzle into its closed position after the injection of each of the partial quantities of fuel.