Abstract: A method for operating a fuel-operated burner (3) downstream of an engine (1) and upstream of a catalytic converter (4), comprising an actuation of an ignition apparatus (12) of the burner (3) during a pre-definable preheating phase, without delivering fuel (11) to the burner (3) during the preheating phase, and, after the end of the preheating phase, a timely delivery of fuel (11) to the burner (3) and combustion of the delivered fuel (11) in the burner (3). Further, a computing unit and a computer program product for carrying out such a method are proposed.

Abstract: A method for operating a burner, comprising supplying a controlled quantity of combustion air to the burner, supplying a controlled quantity of fuel to the burner, igniting the air-fuel mixture in the burner, determining a pressure pulsation value in the exhaust gas downstream of the burner and/or in an air path upstream of the burner, and adjusting the quantity of combustion air and/or the fuel depending on the pressure pulsation value. Further proposed are a computing unit and a computer program product for performing such a method.

Abstract: The invention relates to A method for operating a fuel-operated burner (3) downstream of an engine (1) and upstream of a catalytic converter (4), comprising an actuation of an ignition apparatus (12) of the burner (3) during a pre-definable preheating phase, without delivering fuel (11) to the burner (3) during the preheating phase, and, after the end of the preheating phase, a timely delivery of fuel (11) to the burner (3) and combustion of the delivered fuel (11) in the burner (3). Further, a computing unit and a computer program product for carrying out such a method are proposed.

Abstract: A method (200) for diagnosing the functionality of a burner (100), comprising: determining a lambda value (210) of an exhaust gas of the burner (100), comparing (220) the determined lambda value to a time-based changing lambda threshold (225), and detecting a malfunction (280) when the determined lambda value exceeds the time-based changing lambda threshold (225). Furthermore, a computing unit and a computer program for carrying out such a method (200) are proposed.

Abstract: A method for adapting valve timings of an internal combustion engine, includes selecting multiple instantaneous operating points of the internal combustion engine by comparison to specified operating points, ascertaining a cylinder charge of at least one cylinder of the internal combustion engine at each of the selected operating points, ascertaining a charge error for each selected operating point from the difference of each ascertained cylinder charge from an expected value of the cylinder charge for the particular operating point, comparing the ascertained charge errors to expected charge errors, and ascertaining an adaptation value of the valve timings from the result of the comparison.

Abstract: A method for controlling a haptic accelerator pedal in a motor vehicle includes determining a current rate of change of the pedal at which a pedal lever of the pedal changes its position between a first position of rest and a second position of maximum activation when the pedal lever is moved in an activation direction. The determined current rate of change of the pedal is compared with a predefined limiting value for the rate of change of the pedal. The actuator is activated if the determined current rate of change of the pedal is lower than the limiting value for the rate of change of the pedal. The pedal is excited by means of the actuator by applying an opposing force counter to the activation direction to generate a haptically perceptible signal if the actuator is activated when an activation condition occurs.

Abstract: A method for adapting valve timings of an internal combustion engine, includes selecting multiple instantaneous operating points of the internal combustion engine by comparison to specified operating points, ascertaining a cylinder charge of at least one cylinder of the internal combustion engine at each of the selected operating points, ascertaining a charge error for each selected operating point from the difference of each ascertained cylinder charge from an expected value of the cylinder charge for the particular operating point, comparing the ascertained charge errors to expected charge errors, and ascertaining an adaptation value of the valve timings from the result of the comparison.

Abstract: A method and a control device for controlling a haptic acceleration pedal in a motor vehicle includes determining a foreseeable signal position in which a haptically perceivable signal is foreseeably to be generated by the acceleration pedal at a future time. The signal position is configured to be located between a rest position and a maximally actuated position within the shifting range of the pedal. While the pedal is located in a current position between the rest position and the foreseeable position, an actuator that is configured to generate a haptically perceivable signal on the acceleration pedal is arranged in such manner that the actuator is in operational connection with the acceleration pedal when the acceleration pedal has reached the foreseeable position. The configuration results in a prompt generation of a haptically perceivable signal and a reduced energy consumption for the actuator.

Abstract: A method for controlling a haptic accelerator pedal in a motor vehicle includes determining a current rate of change of the pedal at which a pedal lever of the pedal changes its position between a first position of rest and a second position of maximum activation when the pedal lever is moved in an activation direction. The determined current rate of change of the pedal is compared with a predefined limiting value for the rate of change of the pedal. The actuator is activated if the determined current rate of change of the pedal is lower than the limiting value for the rate of change of the pedal. The pedal is excited by means of the actuator by applying an opposing force counter to the activation direction to generate a haptically perceptible signal if the actuator is activated when an activation condition occurs.

Abstract: A method and a control device for controlling a haptic acceleration pedal in a motor vehicle includes determining a foreseeable signal position in which a haptically perceivable signal is foreseeably to be generated by the acceleration pedal at a future time. The signal position is configured to be located between a rest position and a maximally actuated position within the shifting range of the pedal. While the pedal is located in a current position between the rest position and the foreseeable position, an actuator that is configured to generate a haptically perceivable signal on the acceleration pedal is arranged in such manner that the actuator is in operational connection with the acceleration pedal when the acceleration pedal has reached the foreseeable position. The configuration results in a prompt generation of a haptically perceivable signal and a reduced energy consumption for the actuator.

Abstract: A method and a device are provided for operating an internal combustion engine which allow for an improved diagnosis of the valve mechanism of cylinders of the internal combustion engine. For this purpose, a variable characteristic of a suction performance of a cylinder of the internal combustion engine is ascertained. The variable characteristic of the suction performance is ascertained as a function of the mass flow flowing into an intake manifold of the internal combustion engine and of a change of the intake manifold pressure during an intake phase of the cylinder.

Abstract: A method and a device are provided for operating an internal combustion engine which allow for an improved diagnosis of the valve mechanism of cylinders of the internal combustion engine. For this purpose, a variable characteristic of a suction performance of a cylinder of the internal combustion engine is ascertained. The variable characteristic of the suction performance is ascertained as a function of the mass flow flowing into an intake manifold of the internal combustion engine and of a change of the intake manifold pressure during an intake phase of the cylinder.