Abstract: An internal combustion engine including a cylinder head, a fresh air duct configured for providing a fresh air supply to the internal combustion engine, and a quick-closing valve arranged in the fresh air duct, upstream of the cylinder head of the internal combustion engine, in order to interrupt the fresh air supply. The internal combustion engine also includes an exhaust gas recirculation pipe that has an outlet opening that is arranged centrally in the fresh air duct and, in a flow direction of the fresh air supply, upstream of the quick-closing valve forming a minimum gap between the outlet opening and the quick-closing valve.

Abstract: An exhaust-gas aftertreatment system for an internal combustion engine, having a catalyst device, which is designed to catalytically react at least one exhaust-gas component with a reactant, and a reactant-metering device, which is arranged upstream of the catalyst device along a flow path of the exhaust gas through the exhaust-gas aftertreatment system. The reactant-metering device has at least one exhaust-gas flow nozzle.

Abstract: There is disclosed a fault ride-through system for use in a power system comprising a synchronous generator driven by a prime mover. The fault ride-through system comprises a mechanical switch connected in parallel with a dynamic power dissipater, wherein the dynamic power dissipater comprises a solid-state switch connected in series with a braking resistor. A controller is configured to control the mechanical switch and the solid-state switch to control the current through the braking resistor, based on received data indicative of one or more operation parameters of the power system.

Abstract: A method for operating an internal combustion engine, in particular a gas engine, having two cylinder banks, each of which includes multiple cylinders, wherein each cylinder bank is independently supplied with charging pressure, and having a device for actively deactivating at least one cylinder of each cylinder bank. When the operating state is switched from a state with at least one deactivated cylinder to an operating state with at least one other activated cylinder, the charging pressure is reduced prior to the activation of the other cylinder.

Abstract: In an internal combustion engine with exhaust gas turbochargers which operate in parallel and of which at least one can be switched on and off by a charge air duct blocking arrangement including a charge air duct blocking element, the charge air duct blocking arrangement is adapted to provide for a certain movement characteristic of the charge air duct blocking element resulting in a slower movement of the charge air duct blocking element resulting in a longer duration for the air duct blocking element to reach its open position and a faster movement during closing resulting in a rapid closing of the charge air duct blocking element.

Abstract: A method and an arrangement for operating an internal combustion engine. According to the method, a load threshold is defined below which load control by a throttle valve is performed.

Abstract: An insert that can be positioned in a gap between a first front face of a cylinder liner, the first front face facing a cylinder head, and a second front face of the cylinder head, the second front face facing the cylinder liner. The insert includes at least one compressible material.

Abstract: A method for detecting the aging of a heterogeneous catalytic converter, including the following steps: acquiring at least one measurement signal in a media flow passing through the catalytic converter downstream of the catalytic converter; applying a time-variant input signal to the media flow and/or the catalytic converter; evaluating a behavior of the at least one measurement signal as a function of the time-variant input signal; and detecting a state of aging of the catalytic converter.

Abstract: A method for operating a dual-fuel internal combustion engine, having an intake path and an engine having a number of cylinders. In the method the engine is operated in a first operating state in diesel operation with diesel or another liquid fuel, and in a second operating state in gas operation with gas as fuel in a charge mixture, and switching between diesel operation and gas operation takes place in a switchover range determined, in particular predetermined, by switchover operating parameters.

Abstract: A method for determining the aging of an oxidation catalyst in an exhaust gas aftertreatment system of an internal combustion engine, having the following steps: ascertaining a soot burn rate of a particle filter of the exhaust gas aftertreatment system; adapting a function having at least one adaptation parameter to the soot burn rate dependent on at least one variable, a value of the adaptation parameter depending on an aging of the oxidation catalyst; and determining the aging of the oxidation catalyst using the adaptation parameter value ascertained by adapting the function.

Abstract: A method for operating an internal combustion engine having a number of cylinders and an injection system having an injection system that has a common rail and a number of injectors associated with the cylinders, wherein an individual accumulator is associated with each injector and stores fuel from the common rail for the injector. The method has the following steps: starting the internal combustion engine, operating the internal combustion engine, shutting off the internal combustion engine. The following steps are also provided: a state indicating an engine standstill is detected, in particular after the internal combustion engine has been shut off, a high-pressure limit value is defined and a target high pressure is specified, a leakage is produced in the common rail without injection, the fuel pressure in the common rail is reduced to the defined high-pressure limit value below the target high pressure by way of the leakage.

Abstract: A method for operating an internal combustion engine with a motor having a number of cylinders and an injection system having a common rail with a number of injectors assigned to the cylinders and similar high pressure components, which is designed to hold fuel from the common rail for the injector, wherein the method has the steps: injecting fuel from the common rail into a cylinder by way of an injector, determining a fuel pressure for a high-pressure component, in particular the common rail, the injector and/or the individual reservoir, having at least one high-pressure sensor measuring the fuel pressure. Provision is made for a defect in the high-pressure sensor to be detected in that a check is made as to whether magnitude of the high-pressure control deviation (ep) during a predetermined time interval (tLimit1SD, tLimit2SD, tLimit3SD) exceeds a predetermined limiting value (eLimit1SD, eLimit2SD, eLimit3SD).

Abstract: A method and a control device for monitoring the pressure in a crankcase of an internal combustion engine. The desired values for the pressure in the crankcase are defined for a plurality of operating points of the internal combustion engine. Furthermore, at least one of the defined desired pressure values is modified during operation of the internal combustion engine.

Abstract: A method for regenerating a particle filter during the operation of an internal combustion engine, having the following steps: detecting at least one loading parameter which is characteristic of a present loading of the particle filter, wherein an active regeneration measure can be carried out recurrently in a manner dependent on the loading parameter; determining a time window for a regeneration of the particle filter; and determining a prediction for an operating state of the internal combustion engine expected within the time window, wherein the active regeneration measure at a time indicated for it by the loading parameter is skipped if the prediction predicts that, within the time window, an operating state of the internal combustion engine will arise in which a regeneration of the particle filter takes place without an active regeneration measure.

Abstract: A method for improving the cold start capacity of an internal combustion engine which is cooled with water that is pre-heated for the cold start. The pre-heated hot water is conducted through flow paths in a region of the crankcase ventilating device and/or in a water/air heat exchanger of the crankcase ventilating device. An internal combustion engine with at least one cooling water circuit, at least one cooling water pump which is arranged in the cooling water circuit, and at least one crankcase ventilating device. The crankcase ventilating device is at least temporarily integrated into the cooling water circuit of the internal combustion engine, and the cooling water circuit has a pre-heating assembly for pre-heating the cooling water when the internal combustion engine is cold started.

Abstract: A method for operating an internal combustion engine, having of the following steps: operating the internal combustion engine with a gas fuel; detecting a lambda value in the exhaust gas of the internal combustion engine; determining at least one variable from the detected lambda value, characterizing the quality of the gaseous fuel; and controlling the internal combustion engine based on the at least one variable.

Abstract: An emission signature modification device for modifying an acoustic signature of an exhaust gas stream, including an exhaust gas guiding device that guides the exhaust gas stream in the flow direction thereof from an inlet area to an outlet area. An active acoustic emission modification device modifies the acoustic emission of the exhaust gas stream in predetermined operating states. If an actuator system of the active acoustic emission modification device is designed such that in a circumferential direction, the actuator system is surrounded by more than 30% of the guided exhaust gas stream, the actuating system can be protected against harmful influences from the environment by way of the exhaust gas guiding device on the one hand, and on the other hand, the required space signifier can be reduced as compared to a lateral, external arrangement of the actuating system.

Abstract: An exhaust gas aftertreatment system with an exhaust gas inlet, at least two exhaust gas aftertreatment elements, and a flow chamber. The exhaust gas inlet, the at least two exhaust gas aftertreatment elements, and the flow chamber are arranged relative to one another and fluidically connected together such that exhaust gas flowing through the exhaust gas inlet into the flow chamber can be distributed to the at least two exhaust gas aftertreatment elements. The exhaust gas passes through at least one first of the at least two exhaust gas aftertreatment elements along a first flow direction, and the exhaust gas passes through at least one second of the at least two exhaust gas aftertreatment elements along a second flow direction, wherein the first flow direction and the second flow direction are oriented at least diagonally to each other, preferably anti-parallel to each other.

Abstract: A method for determining at least one injection parameter of an internal combustion engine, including the following steps: detecting a pressure profile in a time-resolved manner in an injection system of an internal combustion engine at least during an injection; providing a reference pressure profile for at least one operating point of the injection system; comparing the detected pressure profile with the reference pressure profile, and ascertaining at least one injection parameter as a function of the comparison.

Abstract: A method for operating a driving system having an internal combustion engine and an exhaust gas purifying device through which exhaust gas from the internal combustion engine flows in order to be purified. The exhaust gas purifying device has at least one catalyst element for catalytic conversion of nitrogen monoxide into nitrogen dioxide at a determined conversion rate. In order to compensate for an age related decrease in the conversion rate of the catalyst element the nitrogen monoxide emission from the internal combustion engine and/or the exhaust gas temperature before the catalyst element are adjusted as a function of the current conversion rate and/or the age of the catalyst element so that the nitrogen dioxide concentration after the catalyst element is greater than or equal to a minimum concentration and/or that the molar ratio between nitrogen monoxide and nitrogen dioxide after the catalyst element corresponds to a predetermined ratio.