Abstract: A closed-loop control device, for closed-loop control of a power assembly including an internal combustion engine and a generator having an operative drive connection to the internal combustion engine, includes: the closed-loop control device which is configured, in a first functional state, for: detecting a generator frequency (fG) of the generator as a controlled variable; determining a control deviation (ef) as a difference between the generator frequency (fG) which is detected and a target generator frequency fsoll); determining a target speed (nsoll) as a manipulated variable for controlling the internal combustion engine as a function of the control deviation (ef); using a control rule for determining the target speed (nsoll); and being operatively connected to an open-loop control device of the internal combustion engine in such a way that the target speed (nsoll) can be transmitted by the closed-loop control device to an open-loop control device.

Abstract: A closed-loop control device, for closed-loop control of a power assembly including an internal combustion engine and a generator operatively connected in terms of drive to the internal combustion engine, includes: the closed-loop control device which is configured for: detecting a generator power (PG) of the generator as a controlled variable; ascertaining a control deviation (eP) as a difference between the generator power (PG) which is detected and a target generator power (Ptarget); determining a target torque (Mtarget) as a manipulated variable for actuating the internal combustion engine as a function of the control deviation (eP); using a control rule to determine the target torque (Mtarget); and determining the control rule used to determine the target torque (Mtarget) as a function of a predetermined loop gain (vP).

Abstract: A closed-loop control device includes: a power controller; a frequency controller for: detecting a generator frequency (fG) as a controlled variable; determining a frequency control deviation (ef) as a difference between the detected generator frequency (fG) and a target generator frequency (fsoll); determining a second preset variable as a manipulated variable for controlling an internal combustion engine as a function of the frequency control deviation (ef); and a switchover module for: using, in a first functional state, a first preset variable as a control preset variable for controlling the internal combustion engine; using, in a second functional state, the second preset variable as a control preset variable for controlling the internal combustion engine; wherein the power controller and the frequency controller can calculate a controller component for a respectively assigned preset variable during operation of the closed-loop control device, independently of a current functional state of the switchover

Abstract: A closed-loop control device includes: a power controller for: detecting a generator power of a generator as a controlled variable, determining a power control deviation as a difference between the detected generator power and a target generator power; and determining a first preset variable as a function of the power control deviation; a frequency controller for: detecting a generator frequency of the generator as a controlled variable, determining a frequency control deviation as a difference between the detected generator frequency and a target generator frequency; determining a second preset variable as a function of the frequency control deviation; and a preselection module for determining a third preset variable, the closed-loop control device for: combining the first preset variable, the second preset variable, and the third preset variable with one another to form an overall preset variable; and using the overall preset variable for controlling an internal combustion engine.

Abstract: A closed-loop control device, for closed-loop control of a power assembly including an internal combustion engine and a generator having an operative drive connection to the internal combustion engine, includes: the closed-loop control device which is configured for: detecting a generator power (PG) of the generator as a controlled variable; determining a control deviation (eP) as a difference between the generator power (PG) which is detected and a target generator power (Psoll); determining a target speed (nsoll) as a manipulated variable for controlling the internal combustion engine as a function of the control deviation (eP); using a control rule for determining the target speed (nsoll); and being operatively connected to an open-loop control device of the internal combustion engine in such a way that the target speed (nsoll) can be transmitted by the closed-loop control device to the open-loop control device.

Abstract: A closed-loop control device includes: the closed-loop control device which is configured for: detecting a generator frequency (fG) of the generator as a controlled variable; determining a control deviation (ef) as a difference between the generator frequency (fG) which is detected and a target generator frequency (fsoll); determining a target torque (Msoll) as a manipulated variable for controlling an internal combustion engine as a function of the control deviation (ef); using a control rule for determining the target torque (Msoll); and adapting the control rule—which is used to determine the target torque (Msoll)—as a function of at least one adaptation variable, the at least one adaptation variable being selected from a group consisting of the generator frequency (fG) which is detected, a target torque variable, and a generator power.

Abstract: A method for operating an injector on an internal combustion engine includes the steps of: introducing a fuel into a combustion chamber of the internal combustion engine by way of the injector; capturing, for a plurality of injection events, a wear value for the injector; assigning each respective one of the wear value that is captured to a respective one of a plurality of wear value classes; determining, for each of the plurality of wear value classes, a class frequency of a plurality of the wear value that are captured and assigned to a corresponding one of the plurality of wear value classes; calculating, based on a plurality of class frequencies of the plurality of wear value classes, a total wear value for the injector; and evaluating a condition of the injector based on the total wear value.

Abstract: A method for operating an internal combustion engine: detecting a first signal from a knock sensor in a temporal measurement window for a first load point and for a first energization duration—assigned to a pre-injection—of an injector for an operating cycle; calculating a first first evaluation point from the first signal by a first metric; detecting a second signal from the knock sensor in the temporal measurement window for the first load point and for a second energization duration—assigned to the pre-injection—of the injector for the operating cycle; calculating by the first metric a second first evaluation point from the second signal; determining an optimum energization duration as an optimum of the first first evaluation point and the second first evaluation point; and storing and/or applying the optimum energization duration to the first load point and the first combustion chamber.

Abstract: An exhaust gas after-treatment device includes: a catalytic converter system, which includes a delivery side and a discharge side; and a container including an interior space and at least two openings, the at least two openings including a first opening and a second opening, the catalytic converter system being arranged in the interior space of the container, the first opening being connected with the catalytic converter system on the delivery side, and the second opening being connected to the catalytic converter system on the discharge side.

Abstract: A method for the model-based open-loop and closed-loop control of an internal combustion engine includes the steps of: during stationary operation, switching takes place cyclically from the normal operation to an exploration operation, wherein in the exploration operation, an exploration measure of quality (J/EXP) is calculated in accordance with combustion model and variance (VAR) thereof, wherein the exploration measure of quality (J/EXP) is set as essential for the operating point of the internal combustion engine, wherein on the basis of the operating variables of the internal combustion engine combustion model is adapted, and wherein switching back to normal operation takes place.

Abstract: A method for a model-based open-loop and closed-loop control of an internal combustion engine includes the steps of: determining, via a combustion model, injection system setpoint values for controlling injection system actuators, according to a setpoint torque; adapting, during an operation of the internal combustion engine, the combustion model according to a model value, the model value being calculated from a first Gaussian process model for representing a base grid and a second Gaussian process model for representing adaptation data points; determining, by an optimizer, a minimized measure of quality by changing the injection system setpoint values within a prediction horizon, and, in an event that the minimized measure of quality is found, the injection system setpoint values are set as critical for adjusting an operating point of the internal combustion engine; and monitoring the model value in respect of a monotony which is predefined.

Abstract: A method for operating an internal combustion engine. The method includes providing a piston engine. The piston engine includes a crankshaft and a torque sensor system. The torque sensor system includes at least one first rotary angle sensor and at least one second rotary angle sensor. The method further includes measuring a first and a second rotary angle in a spacing region and determining an angular offset between the first and the second rotary angle. The angular offset results from the torsion of the loaded crankshaft wherein the spacing region is limited along the crankshaft to an actual partial region of the spacing between the bearing journals. The partial region includes an actual subgroup of at least one of the number of offsets and the number of shaft journals, so that the angular offset is assigned to the actual subgroup.

Abstract: A manifold for deflecting a flow of a medium flowing through the manifold from an inlet side of the manifold to an outlet side of the manifold includes: the inlet side; a wall at least partially defining and thereby restricting a flow volume of the manifold; and a diffuser section arranged centrally in the flow volume on the inlet side, the diffuser being a single component with the wall.

Abstract: A method for a model-based open-loop and closed-loop control of an internal combustion engine includes the steps of: calculating, by an optimizer, a pre-optimized quality measure based on an operating situation, wherein, in calculating the pre-optimized quality measure, a plurality of discrete manipulated variables having a plurality of discrete settings are interpreted as a plurality of continuous manipulated variables having a continuous settings range; quantizing the plurality of continuous manipulated variables, and the plurality of continuous manipulated variables are set as a plurality of new discrete manipulated variables (SG(new)) having a plurality of discrete settings; and calculating, by the optimizer, a post-optimized quality measure based on the plurality of new discrete manipulated variables and the operating situation of the internal combustion engine, and the post-optimized quality measure is set as critical for an operating point of the internal combustion engine by the optimizer.

Abstract: A method for operating an injector on an internal combustion engine includes the steps of: introducing a fuel into a combustion chamber of the internal combustion engine by way of the injector; capturing, for a plurality of injection events, a wear value for the injector; assigning each respective one of the wear value that is captured to a respective one of a plurality of wear value classes; determining, for each of the plurality of wear value classes, a class frequency of a plurality of the wear value that are captured and assigned to a corresponding one of the plurality of wear value classes; calculating, based on a plurality of class frequencies of the plurality of wear value classes, a total wear value for the injector; and evaluating a condition of the injector based on the total wear value.

Abstract: A method for operating an internal combustion engine, the method including the steps of: (a) actuating an injector to introduce a pre-injection amount of a fuel into a combustion chamber of the internal combustion engine; (b) determining, for an operating cycle of the combustion chamber in which the injector was actuated in the step (a), a pressure gradient characteristic value which is characteristic of a combustion chamber pressure gradient in the combustion chamber; (c) repeating the steps (a) and (b) a plurality of times; (d) determining a skew of a distribution of a plurality of pressure gradient characteristic values determined in the step (c); and (e) changing or maintaining an actuation of the injector depending on the skew determined in the step (d).

Abstract: A method for monitoring a fuel supply system in an internal combustion engine includes the steps of: recording a first pressure value in the fuel supply system in a region of the fuel supply system associated with a pre-filter and upstream of a low pressure pump; recording a second pressure value in the fuel supply system downstream of the low pressure pump in a region of the fuel supply system associated with a primary filter; monitoring the first pressure value and the second pressure value for an error state of the fuel supply system; and recognizing the error state only if the error state is plausible on a basis of both the first pressure value and the second pressure value.

Abstract: A method for a model-based open-loop and closed-loop control of an internal combustion engine includes the steps of: calculating, by an optimizer, a pre-optimized quality measure based on an operating situation, wherein, in calculating the pre-optimized quality measure, a plurality of discrete manipulated variables having a plurality of discrete settings are interpreted as a plurality of continuous manipulated variables having a continuous settings range; quantizing the plurality of continuous manipulated variables, and the plurality of continuous manipulated variables are set as a plurality of new discrete manipulated variables (SG(new)) having a plurality of discrete settings; and calculating, by the optimizer, a post-optimized quality measure based on the plurality of new discrete manipulated variables and the operating situation of the internal combustion engine, and the post-optimized quality measure is set as critical for an operating point of the internal combustion engine by the optimizer.

Abstract: A method for the model-based open-loop and closed-loop control of an internal combustion engine includes the steps of: during stationary operation, switching takes place cyclically from the normal operation to an exploration operation, wherein in the exploration operation, an exploration measure of quality (J/EXP) is calculated in accordance with combustion model and variance (VAR) thereof, wherein the exploration measure of quality (J/EXP) is set as essential for the operating point of the internal combustion engine, wherein on the basis of the operating variables of the internal combustion engine combustion model is adapted, and wherein switching back to normal operation takes place.

Abstract: A method for monitoring an operability of a vehicle, the method including the steps of: traveling a route, which is defined, with the vehicle; detecting at least one power parameter of the vehicle, the at least one power parameter being characteristic for a power of a drive of the vehicle; comparing, in a first comparison, the at least one power parameter with historical data regarding the route traveled; and evaluating the operability of the vehicle based on the first comparison.