Abstract: Method for operating an internal combustion engine which has a gas combustion system and an exhaust gas post-treatment system. Exhaust gas that leaves the gas combustion system is directed to at least one CH4 oxidation catalytic converter of the exhaust gas post-treatment system. The CH4/NO2 mole ratio in the exhaust gas is set in a defined fashion by at least one gas-combustion-system-side and/or exhaust-gas-post-treatment-system-side measure upstream of at least one CH4 oxidation catalytic converter.

Abstract: Method for operating an internal combustion engine which has a gas combustion system and an exhaust gas post-treatment system. Exhaust gas that leaves the gas combustion system is directed to at least one CH4 oxidation catalytic converter of the exhaust gas post-treatment system. The CH4/NO2 mole ratio in the exhaust gas is set in a defined fashion by at least one gas-combustion-system-side and/or exhaust-gas-post-treatment-system-side measure upstream of at least one CH4 oxidation catalytic converter.

Abstract: The present invention relates to a method for generating ammonia from an ammonia precursor substance and to the use thereof for reducing nitrogen oxides in exhaust from industrial facilities, from combustion engines, from gas engines, from diesel engines or from petrol engines.

Abstract: The present invention relates to an ammonia gas generator for generating ammonia from an ammonia precursor substance and to the use thereof for reducing nitrogen oxides in exhaust, in particular from industrial facilities, from combustion engines, from gas engines, from diesel engines or from petrol engines.

Abstract: The invention relates to an ammonia gas generator for producing ammonia from an ammonia precursor substance as well as the use thereof in exhaust after treatment systems. The invention further relates to a method for producing ammonia gas to reduce nitrogen oxides in exhaust gases, in particular combustion gases from internal combustion engines such as diesel engines.

Abstract: An exhaust gas aftertreatment system for an internal combustion engine, particularly for a ship's diesel engine operated with heavy oil, has a SCR catalyst that uses ammonia as reductant. A nozzle is positioned upstream of the SCR catalyst viewed in flow direction of the exhaust gas. Using the nozzle, an aqueous urea solution is decomposed at a defined pressure and at a defined temperature to form water vapor, carbon dioxide and ammonia vapor such that ammonia evaporated by the nozzle is injected into the exhaust gas via the nozzle.

Abstract: A device for injecting a liquid, particularly an aqueous urea solution, into an exhaust gas flow has at least one atomizing nozzle which is designed as a two-component nozzle and by means of which the liquid is injected into the exhaust gas flow by means of pressurized air such that the liquid can be mixed with the pressurized air first directly upon exiting, or after exiting, the respective atomizing nozzle outside of the atomizing nozzle. The atomizing nozzle, or each atomizing nozzle, has a nozzle base body, a nozzle air cap and a nozzle insert which are formed as turning parts. The respective atomizing nozzle can be connected to a nozzle lance via the nozzle base body, and the nozzle air cap and the nozzle insert are received and held in the nozzle base body.

Abstract: The present invention relates to an ammonia gas generator for generating ammonia from an ammonia precursor substance and to the use thereof for reducing nitrogen oxides in exhaust, in particular from industrial facilities, from combustion engines, from gas engines, from diesel engines or from petrol engines.

Abstract: The invention relates to an ammonia gas generator for producing ammonia from an ammonia precursor substance as well as the use thereof in exhaust aftertreatment systems. The invention further relates to a method for producing ammonia gas to reduce nitrogen oxides in exhaust gases, in particular combustion gases from internal combustion engines such as diesel engines.

Abstract: The present invention relates to a method for generating ammonia from an ammonia precursor substance and to the use thereof for reducing nitrogen oxides in exhaust from industrial facilities, from combustion engines, from gas engines, from diesel engines or from petrol engines.

Abstract: A device for injecting a liquid, particularly an aqueous urea solution, into an exhaust gas flow has at least one atomizing nozzle which is designed as a two-component nozzle and by means of which the liquid is injected into the exhaust gas flow by means of pressurized air such that the liquid can be mixed with the pressurized air first directly upon exiting, or after exiting, the respective atomizing nozzle outside of the atomizing nozzle. The atomizing nozzle, or each atomizing nozzle, has a nozzle base body, a nozzle air cap and a nozzle insert which are formed as turning parts. The respective atomizing nozzle can be connected to a nozzle lance via the nozzle base body, and the nozzle air cap and the nozzle insert are received and held in the nozzle base body.

Abstract: An exhaust gas aftertreatment system for an internal combustion engine, particularly for a ship's diesel engine operated with heavy oil, has a SCR catalyst that uses ammonia as reductant. A nozzle is positioned upstream of the SCR catalyst viewed in flow direction of the exhaust gas. Using the nozzle, an aqueous urea solution is decomposed at a defined pressure and at a defined temperature to form water vapor, carbon dioxide and ammonia vapor such that ammonia evaporated by the nozzle is injected into the exhaust gas via the nozzle.