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: Drug delivery articles, resident articles, and retrieval systems e.g., for gram-level dosing, are generally provided. In some embodiments, the residence articles are configured for transesophageal administration, transesophageal retrieval, and/or gastric retention to/in a subject. In certain embodiments, the residence article includes dimensions configured for transesophageal administration with a gastric resident system. In some cases, the residence article may be configured to control drug release e.g., with zero-order drug kinetics with no potential for burst release for weeks to months. In some embodiments, the residence articles described herein comprise biocompatible materials and/or are safe for gastric retention. In certain embodiments, the residence article includes dimensions configured for transesophageal retrieval. In some cases, the residence articles described herein may comprise relatively large doses of drug (e.g., greater than or equal to 1 gram).

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 fuel system for an internal combustion engine is configured to operate with at least two fuel types, and includes an electrically driven high-pressure fuel pump for at least one of the two fuel types. The high-pressure fuel pump is connected on an outlet side to a high-pressure line which is common to the two fuel types.

Abstract: A fuel system comprises a first reservoir for a first fuel in liquid phase that has a first vapor pressure, and a second reservoir for a second fuel in liquid phase that has a second vapor pressure. The second vapor pressure is higher than the first vapor pressure. The fuel system further includes a mixing device for mixing the first fuel in liquid phase with the second fuel in liquid phase, and an injector which is hydraulically connected to the mixing device and is configured so that as, or immediately after, the mixture passes through an outlet opening of the injector, the second fuel changes from the liquid phase to a gaseous phase.

Abstract: A method for operating an internal combustion engine (100), particularly of a motor vehicle, operated with a gas as fuel, a lambda value of an air/fuel mixture being regulated by means of lambda control as a function of a signal from a lambda probe (130), and, when a lean/rich jump is detected by the lambda probe (130), a mixture control factor (GRF) which controls the mixture composition being varied at least for a predeterminable time such that a shift of the lambda air ratio toward rich is caused, is characterized in that the mixture control factor (GRF) is varied in such a way that an additional defined shift of the lambda air ratio toward rich is caused.

Abstract: In a method for generating an internal combustion engine configured to run on both a gas fuel and a liquid fuel, the shutoff valve of the gas injection system is initially closed, the engine is then operated with the liquid fuel, and subsequently all gas injection valves of the gas injection system are opened in a predefined pattern while the shutoff valve is still closed.

Abstract: In a method for diagnosing an internal combustion engine having first and second fuel injectors, if a misfire is detected, the following steps are performed in sequence: a first fuel quantity of the fuel is introduced only by the first fuel injector; a check is performed to determine whether a misfire results from the introduction of a first fuel quantity in the first step; a second fuel quantity of the fuel is introduced only by the second fuel injector; a check is performed to determine whether a misfire results from the introduction of the second fuel quantity in the third step; and an engine error is diagnosed if a misfire was detected in the second or in the fourth step.

Abstract: A method for operating an internal combustion engine (100), particularly of a motor vehicle, operated with a gas as fuel, a lambda value of an air/fuel mixture being regulated by means of lambda control as a function of a signal from a lambda probe (130), and, when a lean/rich jump is detected by the lambda probe (130), a mixture control factor (GRF) which controls the mixture composition being varied at least for a predeterminable time such that a shift of the lambda air ratio toward rich is caused, is characterized in that the mixture control factor (GRF) is varied in such a way that an additional defined shift of the lambda air ratio toward rich is caused.

Abstract: In a method and a device for operating a drive unit, e.g., of a vehicle, to provide improved diagnosis of a state of a power transmission unit, the power transmission unit in the engaged state transmits an output power of an engine to a drive train, the state of the power transmission unit being detected. The state of the power transmission unit is diagnosed as a function of an output quantity of the engine.

Abstract: In a method for generating an internal combustion engine configured to run on both a gas fuel and a liquid fuel, the shutoff valve of the gas injection system is initially closed, the engine is then operated with the liquid fuel, and subsequently all gas injection valves of the gas injection system are opened in a predefined pattern while the shutoff valve is still closed.

Abstract: In a method and a device for operating an injection device (5) for an internal combustion engine, the injection device (5) includes injection valves (40), via which fuel is injected directly into combustion chambers (100) of the internal combustion engine. Mechanisms are provided for detecting misfirings (310), and for determining a fuel pressure (320). A mechanical fault of an injection valve (40) is detected when a misfire occurs in a cylinder (110) and the fuel pressure simultaneously drops below a threshold value (SW). An electrical fault in an injection device (5) is detected when misfirings of cylinders (110) assigned to an output stage bank of the injection device (5) are observed, and the fuel pressure has dropped below a threshold value (SW). The responses to the faults that are implemented differ depending on the faults that were detected.

Abstract: In a method for diagnosing an internal combustion engine having first and second fuel injectors, if a misfire is detected, the following steps are performed in sequence: a first fuel quantity of the fuel is introduced only by the first fuel injector; a check is performed to determine whether a misfire results from the introduction of a first fuel quantity in the first step; a second fuel quantity of the fuel is introduced only by the second fuel injector; a check is performed to determine whether a misfire results from the introduction of the second fuel quantity in the third step; and an engine error is diagnosed if a misfire was detected in the second or in the fourth step.

Abstract: The invention relates to a method and a device for operating an injection device (5) for an internal combustion engine, the injection device (5) including injection valves (40), via which fuel is injected directly into combustion chambers (100) of the internal combustion engine. Means are provided for detecting misfirings (310), and for determining a fuel pressure (320). A mechanical fault of an injection valve (40) is detected when a misfire occurs in a cylinder (110) and the fuel pressure simultaneously drops below a threshold value (SW). An electrical fault in an injection device (5) is detected when misfirings of cylinders (110) assigned to an output stage bank of the injection device (5) are observed, and the fuel pressure has dropped below a threshold value (SW). The responses to the faults that are implemented differ depending on the faults that were detected.

Abstract: An operating method for an internal combustion engine is described, especially for a motor vehicle, in which, in a first operating mode, fuel is injected preferably for heating a catalytic converter and, in at least one further operating mode, into a combustion chamber. In order to prevent a sudden change in the torque produced by the internal combustion engine during the switchover from/to the first operating mode, a distribution factor influencing torque is taken into account in an actual branch and/or in a setpoint branch of controller of the internal combustion engine.

Abstract: An arrangement for monitoring the drive of an actuator includes an output-stage component which includes a counter. With the aid of the counter, the switch-on time of the actuator is determined. The determined switch-on time is made available to the microcomputer for diagnostic purposes.

Abstract: In a method and a device for operating a drive unit, e.g., of a vehicle, to provide improved diagnosis of a state of a power transmission unit, the power transmission unit in the engaged state transmits an output power of an engine to a drive train, the state of the power transmission unit being detected. The state of the power transmission unit is diagnosed as a function of an output quantity of the engine.

Abstract: An operating method for an internal combustion engine is described, especially for a motor vehicle, in which, in a first operating mode, fuel is injected preferably for heating a catalytic converter and, in at least one further operating mode, into a combustion chamber. In order to prevent a sudden change in the torque produced by the internal combustion engine during the switchover from/to the first operating mode, a distribution factor influencing torque is taken into account in an actual branch and/or in a setpoint branch of controller of the internal combustion engine.

Abstract: A method and a device for controlling an engine, in which a control module calculates a setpoint torque based on an accelerator position and calculates an air mass and a fuel mass from this setpoint torque. In the process, a setpoint value for lambda (ratio of air mass to fuel mass) is taken into account when the fuel mass is calculated. A monitoring module calculates a monitoring value for the air mass from the fuel mass and compares it to a measured air mass for fault detection.