Abstract: The invention relates to a method for operating an internal combustion engine, wherein the internal combustion engine includes at least one combustion chamber in which a fuel is at least partially burned with ambient air, an exhaust tract that is coupled to an outlet side of the at least one combustion chamber in a fluid communicating manner, wherein hydrogen is used as fuel for the internal combustion engine, wherein the internal combustion engine also has at least one NOx storage catalyst and an exhaust gas discharged from the at least one combustion chamber into the exhaust tract at least partially, preferably entirely, flows through the at least one NOx storage catalyst, wherein a lean hydrogen-air mixture is burned in the at least one combustion chamber in a first operating state, wherein the NOx storage catalyst is regenerated in a second operating state.

Abstract: The invention relates to a method for operating an internal combustion engine comprising: determining a first set point value of a volume of air to be taken into the combustion chamber of the internal combustion engine within one working cycle thereof by retrieving the first set point value from a first characteristic map stored in a memory device of an electronic computing device as a function of a current engine speed of the internal combustion engine and as a function of a torque to be provided by the internal combustion engine; and determining a second set point value by retrieving the second set point value from a second characteristic map stored in the memory device of the electronic computing device as a function of a current engine speed of the internal combustion engine and as a function of a current volume of air supplied to the combustion chamber.

Abstract: The invention relates to a method for operating a gas engine having at least one combustion chamber, in particular for a motor vehicle, wherein a gaseous fuel is injected directly into the combustion chamber in order to operate the gas engine, the gaseous fuel being injected directly into the combustion chamber within a working cycle of the gas engine during at least two phases spaced apart from each other in time, the at least two phases beginning and ending before the first ignition occurring within the working cycle.

Abstract: The invention relates to a method for operating an internal combustion engine comprising: determining a first set point value of a volume of air to be taken into the combustion chamber of the internal combustion engine within one working cycle thereof by retrieving the first set point value from a first characteristic map stored in a memory device of an electronic computing device as a function of a current engine speed of the internal combustion engine and as a function of a torque to be provided by the internal combustion engine; and determining a second set point value by retrieving the second set point value from a second characteristic map stored in the memory device of the electronic computing device as a function of a current engine speed of the internal combustion engine and as a function of a current volume of air supplied to the combustion chamber.

Abstract: The invention relates to a method for operating a gas engine having at least one combustion chamber, in particular for a motor vehicle, wherein a gaseous fuel is injected directly into the combustion chamber in order to operate the gas engine, the gaseous fuel being injected directly into the combustion chamber within a working cycle of the gas engine during at least two phases spaced apart from each other in time, the at least two phases beginning and ending before the first ignition occurring within the working cycle.

Abstract: A combustion engine for a vehicle has an intake duct through which a fuel gas/air/exhaust gas mixture can be fed to a combustion unit of the combustion engine, and an exhaust gas recirculation system feeding in an exhaust gas from the combustion unit at an exhaust gas admission region to the gas fed to the combustion unit. A measuring device that determines the fuel gas/air/exhaust gas mass flow and the fuel gas/air/exhaust gas temperature is arranged in the intake duct upstream of the combustion unit and downstream of the exhaust gas admission region. A temperature sensor is arranged both in the exhaust gas recirculation system and in the intake duct, in each case upstream of the exhaust gas admission region, in addition to the measuring device, to determine a recirculated exhaust gas mass flow and/or an air mass flow fed to the combustion unit.

Abstract: An operating method for an apparatus, having an internal combustion engine that can be operated in a lean mode and a stoichiometric mode, a crankcase, at least one combustion chamber and preferably a throttle element via which charge air can be fed from a charge air cooler to the combustion chamber internal combustion engine is switched to a lean mode during idling and is operated in the lean mode, with the result that, in particular, the pressure difference between the crankcase and the combustion chamber is reduced.

Abstract: An operating method for an apparatus, having an internal combustion engine that can be operated in a lean mode and a stoichiometric mode, a crankcase, at least one combustion chamber and preferably a throttle element via which charge air can be fed from a charge air cooler to the combustion chamber internal combustion engine is switched to a lean mode during idling and is operated in the lean mode, with the result that, in particular, the pressure difference between the crankcase and the combustion chamber is reduced.

Abstract: An internal combustion engine, in particular a gas engine, for a motor vehicle, includes a charge air cooler arranged in an air mass flow feed upstream of an apparatus for mixing in fuel, and a measuring device for determining the air mass flow. The measuring device has a sensor system for measuring a pressure loss across the charge air cooler and a processing unit as evaluation unit for calculating the air mass flow at least from the pressure loss which is measured by the sensor system and a charge air cooler model stored in the processing unit. The charge air cooler forms a geometrically constant throttle for the air mass flow which is flowing through.

Abstract: A combustion engine, in particular a gas engine, for a vehicle, in particular for a commercial vehicle, has an intake duct through which a gas, in particular a fuel gas/air/exhaust gas mixture, can be fed to a combustion unit), in particular a cylinder-piston unit, of the combustion engine, and an exhaust gas recirculation system feeding in an exhaust gas from the combustion unit at an exhaust gas admission region to the gas fed to the combustion unit. At least one measuring device that determines the gas mass flow, in particular fuel gas/air/exhaust gas mass flow, and the gas temperature, in particular fuel gas/air/exhaust gas temperature, is arranged in the intake duct upstream of the combustion unit and downstream of the exhaust gas admission region.

Abstract: An internal combustion engine, in particular a gas engine, for a motor vehicle, includes a charge air cooler arranged in an air mass flow feed upstream of an apparatus for mixing in fuel, and a measuring device for determining the air mass flow. The measuring device has a sensor system for measuring a pressure loss across the charge air cooler and a processing unit as evaluation unit for calculating the air mass flow at least from the pressure loss which is measured by the sensor system and a charge air cooler model stored in the processing unit. The charge air cooler forms a geometrically constant throttle for the air mass flow which is flowing through.