Abstract: A method, a computer program, an electronic storage medium, and an electronic control device for controlling an internal combustion engine are described, in which an injection is distributed among at least three partial injections. The spacing of the partial injections and/or the distribution of the injection quantities of the partial injections is predefined as a function of a parameter that characterizes the combustion sequence.

Abstract: A method and a device for setting an afterglow temperature in a self-igniting internal combustion engine, the afterglow temperature being reduced in a defined operating state of the internal combustion engine until a modification of an operating parameter as a result of the reduction of the afterglow temperature is required in order to maintain the defined operating state, in particular in order to maintain the injected fuel quantity.

Abstract: In order to very accurately ascertain the pollutant emission of the motor vehicle, which occurs during the operation of an internal combustion engine, without the use of complex measurement and test engineering, it is proposed, that during the operation of the internal combustion engine at least one cylinder pressure is in each case acquired at specifiable crankshaft angles, scanning values of a heating rate assigned to the acquired cylinder pressures are determined, the scanning values of the heating rate are provided to a specifiable model as input values, a crankshaft angle assigned to the initiation of combustion, an air/fuel ratio and an exhaust gas recirculation rate are ascertained and provided to the model as input values and the pollutant emission is determined as a function of the input values using the model.

Abstract: A method for determining the quality of the fuel for an internal combustion engine, in particular a direct-injection internal combustion engine in a vehicle, which is characterized by the following be performed: the internal combustion engine is operated in idle mode under predefinable operating conditions, the curve of the injection quantity, necessary for idling, over the engine temperature is determined, and the fuel quality is inferred from the curve of the injection quantity over the engine temperature.

Abstract: A procedure for operating a particle sensor that is arranged downstream after a particle filter, at which an ash contamination can occur, and a device for implementing the procedure, are suggested. A remaining operating time determination determines the remaining operating time of the particle sensor related to an ash contamination. Alternatively or additionally the remaining operating time determination provides a correction signal, with which the sensitivity loss of the particle sensor caused by the ash contamination can be considered.

Abstract: A method for identifying the fuel quality and for operating an internal combustion engine, as well as an engine control unit, in which the temperature of at least one sheathed-element glow plug of the engine is controlled, an engine response after a temperature change is compared to an engine response before the temperature change, and from the result of this comparison, the fuel quality is derived.

Abstract: A method for controlling at least one sheathed-element glow plug in an internal combustion engine, the temperature of the sheathed-element glow plug being controlled as a function of at least one operating parameter of the internal combustion engine in such a way that optimal combustion properties of the internal combustion engine prevail at all times.

Abstract: A method and a device for setting an afterglow temperature in a self-igniting internal combustion engine, the afterglow temperature being reduced in a defined operating state of the internal combustion engine until a modification of an operating parameter as a result of the reduction of the afterglow temperature is required in order to maintain the defined operating state, in particular in order to maintain the injected fuel quantity.

Abstract: The invention relates to a method and a device for controlling an internal combustion engine for which, in the light of performance characteristics, control parameters for at least one control element (100) are specified. A parameter is determined which characterizes the uneven running.

Abstract: A method for determining the quality of the fuel for an internal combustion engine, in particular a direct-injection internal combustion engine in a vehicle, which is characterized by the following be performed: the internal combustion engine is operated in idle mode under predefinable operating conditions, the curve of the injection quantity, necessary for idling, over the engine temperature is determined, and the fuel quality is inferred from the curve of the injection quantity over the engine temperature.

Abstract: A method for controlling at least one sheathed-element glow plug in an internal combustion engine, the temperature of the sheathed-element glow plug being controlled as a function of at least one operating parameter of the internal combustion engine in such a way that optimal combustion properties of the internal combustion engine prevail at all times.

Abstract: A method for identifying the fuel quality and for operating an internal combustion engine, as well as an engine control unit, in which the temperature of at least one sheathed-element glow plug of the engine is controlled, an engine response after a temperature change is compared to an engine response before the temperature change, and from the result of this comparison, the fuel quality is derived.

Abstract: In order to very accurately ascertain the pollutant emission of the motor vehicle, which occurs during the operation of an internal combustion engine, without the use of complex measurement and test engineering, it is proposed, that during the operation of the internal combustion engine at least one cylinder pressure is in each case acquired at specifiable crankshaft angles (KWi), scanning values (Qi) of a heating rate (HZ) assigned to the acquired cylinder pressures are determined, the scanning values (Qi) of the heating rate (HZ) are provided to a specifiable model as input values, a crankshaft angle assigned to the initiation of combustion (AiVB), an air/fuel ratio (?) and an exhaust gas recirculation rate are ascertained and provided to the model as input values and the pollutant emission is determined as a function of the input values using the model.

Abstract: A procedure for operating a particle sensor that is arranged downstream after a particle filter, at which an ash contamination can occur, and a device for implementing the procedure, are suggested. A remaining operating time determination determines the remaining operating time of the particle sensor related to an ash contamination. Alternatively or additionally the remaining operating time determination provides a correction signal, with which the sensitivity loss of the particle sensor caused by the ash contamination can be considered.

Abstract: A method for ascertaining a quality characteristic of a Diesel fuel for a Diesel internal combustion engine, having a device for determining the cylinder pressure curve of at least one cylinder, a process variable of the combustion being ascertained from the cylinder pressure curve, which characterizes the fuel quality.

Abstract: In a muffler device of a motor vehicle, with a plurality of mufflers and an actuator for changing the flow resistance to the exhaust gases flowing through the mufflers, in order to change the damping characteristic, the actuator is provided in a pipe branch having an inlet and two outlets, each outlet being connected via a pipe to a muffler, and the throughflow cross section of the inlet being variable by means of the actuator.

Abstract: An exhaust gas muffler of multi-chamber construction includes an outer housing having an upper and lower half shell, an inner shell, and an inner exhaust gas duct through the exhaust gas muffler. The inner exhaust gas duct has at lease one curved outlet pipe that has a first curved section and a straight outlet end runs flush with the outer housing. The invention also covers a method for the production of the multi-chamber exhaust gas muffler.

Abstract: An enclosure for mounting on a substrate includes a rigid tubular support member and a revolvable elastic sleeve having a double wall enclosing lubricant sealed therein. The sleeve is mounted on the support member in an expanded state with a portion of the inner wall of the sleeve secured to the support member so that the sleeve can be revolved over the end of the support member to contract elastically to a less expanded state while retaining a portion of the sleeve on the support.

Abstract: An exhaust gas muffler of multi-chamber construction includes an outer housing having an upper and lower half shell, an inner shell, and an inner exhaust gas duct through the exhaust gas muffler. The inner exhaust gas duct has at lease one curved outlet pipe that has a first curved section and a straight outlet end runs flush with the outer housing. The invention also covers a method for the production of the multi-chamber exhaust gas muffler.

Abstract: An enclosure for mounting on a substrate, comprising a rigid tubular support member (4) and a revolvable elastic sleeve (6) having a double wall enclosing lubricant (14) sealed therein, wherein the sleeve is mounted on the support member in an expanded state with a portion of the inner wall of the sleeve secured (16) to the support member so that the sleeve can be revolved over the end of the support member to contract elastically to a less expanded state while retaining a portion of the sleeve on the support.