Abstract: Methods and systems are provided for adjusting a regeneration scheme in response to ageing of a first catalyst and a second catalyst. In one example, a method may include determining a first ageing of the first catalyst and a second ageing of the second catalyst and updating factors of the regeneration scheme based on the first ageing and the second ageing.

Abstract: Methods and systems are provided for an exhaust gas arrangement. In one example, a system comprises an air supply device arranged between a first LNT and a second LNT. The air supply device positioned to adjust an air/fuel ratio and a temperature of exhaust gas flowing to the second LNT and devices downstream thereof.

Abstract: Methods and systems are provided for adjusting a regeneration scheme in response to ageing of a first catalyst and a second catalyst. In one example, a method may include determining a first ageing of the first catalyst and a second ageing of the second catalyst and updating factors of the regeneration scheme based on the first ageing and the second ageing.

Abstract: An arrangement of an internal combustion engine with at least one first and one second nitrogen oxide storage catalytic converter is provided, wherein the first nitrogen oxide storage catalytic converter is arranged within a low-pressure exhaust gas recirculation circuit. A method for operating the arrangement is furthermore provided, wherein the nitrogen oxide storage catalytic converters can be used for the production of ammonia under operating conditions with a high load by providing rich exhaust gas conditions.

Abstract: Methods and systems are provided for an exhaust gas arrangement. In one example, a system comprises an air supply device arranged between a first LNT and a second LNT. The air supply device positioned to adjust an air/fuel ratio and a temperature of exhaust gas flowing to the second LNT and devices downstream thereof.

Abstract: A method for controlling exhaust gas aftertreatment in an exhaust gas aftertreatment system having at least one nitrogen oxide storage catalyst and at least one catalyst for selective catalytic reduction is provided, wherein, in phases of a high load, a combustion engine is operated with a substoichiometric fuel/air mixture, and nitrogen oxides in the exhaust gas are reduced in the nitrogen oxide storage catalyst to ammonia, which is stored in the catalyst for selective catalytic reduction, and, when the storage capacity of the catalyst for selective catalytic reduction is exceeded, the combustion engine is operated with a superstoichiometric fuel/air mixture, thus allowing nitrogen oxides in the catalyst for selective catalytic reduction to be reduced by the stored ammonia.

Abstract: Methods and systems are provided for an exhaust gas aftertreatment system. In one example, a method may include limiting ammonia desorption from a catalyst in response to an increase in driver demand by activating an electric motor.

Abstract: An arrangement of an internal combustion engine with at least one first and one second nitrogen oxide storage catalytic converter is provided, wherein the first nitrogen oxide storage catalytic converter is arranged within a low-pressure exhaust gas recirculation circuit. A method for operating the arrangement is furthermore provided, wherein the nitrogen oxide storage catalytic converters can be used for the production of ammonia under operating conditions with a high load by providing rich exhaust gas conditions.

Abstract: An operating method for a motor vehicle having a hybrid drivetrain includes, during a demand check, comparing at least one value which characterizes a current state of an exhaust-gas after-treatment device, with a setpoint value of the exhaust-gas after-treatment device. In response to the comparison indicating a deviation of the value characterizing the current state of the exhaust-gas after-treatment device from the setpoint value, a demand for a measure is indicated. The measure includes supplying charge gas, which includes recirculated exhaust gas, to the internal combustion engine during overrun operation. In addition, a capability check is carried out to detect conditions suitable for implementing the operating method.

Abstract: Methods and systems are provided for an exhaust gas aftertreatment system. In one example, a method may include limiting ammonia desorption from a catalyst in response to an increase in driver demand by activating an electric motor.

Abstract: A method for controlling exhaust gas aftertreatment in an exhaust gas aftertreatment system having at least one nitrogen oxide storage catalyst and at least one catalyst for selective catalytic reduction is provided, wherein, in phases of a high load, a combustion engine is operated with a substoichiometric fuel/air mixture, and nitrogen oxides in the exhaust gas are reduced in the nitrogen oxide storage catalyst to ammonia, which is stored in the catalyst for selective catalytic reduction, and, when the storage capacity of the catalyst for selective catalytic reduction is exceeded, the combustion engine is operated with a superstoichiometric fuel/air mixture, thus allowing nitrogen oxides in the catalyst for selective catalytic reduction to be reduced by the stored ammonia.

Abstract: The present disclosure relates to an operating method for a motor vehicle having a hybrid drivetrain where in a demand check, at least one exhaust-gas after-treatment actual value, which characterizes a current exhaust-gas after-treatment actual state, is compared with an exhaust-gas after-treatment setpoint value, and if, in the event of a deviation of the exhaust-gas after-treatment actual value from the exhaust-gas after-treatment setpoint value, a demand for a measure is detected. The measure comprises supplying charge gas, which has recirculated exhaust gas, to the internal combustion engine during overrun operation. Also a capability check is carried out to detect conditions suitable for implementing the operating method.

Abstract: A method for enriching the exhaust gas of an internal combustion engine with a reducing agent is provided, the internal combustion engine including at least one cylinder and having an intake system for admission of charge air, an exhaust gas discharge system for discharging exhaust gases, and at least one exhaust gas aftertreatment system for reducing nitrogen oxides arranged in the exhaust gas discharge system and which is periodically provided with a supply of reducing agent. The method comprises enriching the exhaust gas with the reducing agent in the exhaust gas discharge system upstream of at least the one exhaust gas aftertreatment system when a fuel supply of the at least one cylinder of the internal combustion engine is deactivated due to an absence of load demand.

Abstract: A method for enriching the exhaust gas of an internal combustion engine with a reducing agent is provided, the internal combustion engine including at least one cylinder and having an intake system for admission of charge air, an exhaust gas discharge system for discharging exhaust gases, and at least one exhaust gas aftertreatment system for reducing nitrogen oxides arranged in the exhaust gas discharge system and which is periodically provided with a supply of reducing agent. The method comprises enriching the exhaust gas with the reducing agent in the exhaust gas discharge system upstream of at least the one exhaust gas aftertreatment system when a fuel supply of the at least one cylinder of the internal combustion engine is deactivated due to an absence of load demand.

Abstract: The invention relates to an arrangement (10) and a method for adjusting the slope times of one or more drivers (90) in such a way that the adjustment is essentially independent of external conditions. The invention also relates to a driver circuit. The arrangement (10) is provided with a device (20) for detecting the time history of an output voltage that is output and supplied to a load (12) by means of the driver/s (90). The measured time values are converted into an output voltage value in a device (30) for converting the measured time history of the output voltage. Moreover, a device (40) for generating a reference voltage value is provided. Said device (40) is connected to a device (60) for predetermining a desired slope time for the driver/s (90), whereby said slope time is essentially independent of external conditions.

Abstract: A device for reducing the electromagnetic emission in integrated circuits having driver stages reduces the electromagnetic emission of an integrated circuit without requiring an increase in the blocking capacitance in the process. This is achieved by combining driver stages which do not switch simultaneously to form driver groups, and special wiring of a plurality of blocking capacitors.

Abstract: The invention relates to a bus driver having an inverter for driving a preferably clocked signal on a bus line. In the event of a capacitive coupling of the bus line to at least one neighboring bus line, a number of secondary inverters corresponding to the number of capacitively coupled bus lines are connected in parallel with the inverter of the bus driver. A simple logic combination supplies the necessary activating signals for the parallel connection of the secondary inverters. As a result, an additional secondary inverter can be connected in when an opposite edge occurs on a neighboring line for the instant of the edge. The invention consequently enables the driver intensity to be adapted dynamically to the signals of neighboring capacitively coupled bus lines.