Abstract: In a method for detecting a running internal combustion engine in a hybrid vehicle, the internal combustion engine, as a first drive unit, and a second drive unit contribute toward driving the hybrid vehicle. To determine reliably whether the internal combustion engine is running during hybrid operation, an interference signal is actively introduced into the ongoing operating sequence of the internal combustion engine, and the response of the internal combustion engine to this interference signal is evaluated. If there is no response of the internal combustion engine, it is concluded that the internal combustion engine is not operating.

Abstract: In a method for starting an internal combustion engine (60) having multiple combustion chambers (62, 64, 66, 68), wherein said internal combustion engine (60) has a starting system (50) and is operated using a start-stop function, and wherein said starting system (50) is actuated after a stop phase in operation of said internal combustion engine (60) to restart said internal combustion engine (60), a combustion chamber (62, 64, 66, 68) to be ignited first of the multiple combustion chambers (62, 64, 66, 68) is determined upon a restart of the internal combustion engine (60), and after a first ignition of the combustion chamber (62, 64, 66, 68) to be ignited first, speed data for the internal combustion engine (60) are detected, and a starter release of the starting system (50) is caused if the detected speed data meet a predetermined starter release criterion.

Abstract: A method is described for starting an internal combustion engine having an E-machine coupled to it in a motor vehicle, after the input of a certain torque command at a drive control of the internal combustion engine, the internal combustion engine being accelerated for the start by the E-machine, and the internal combustion engine being set by the drive control, via actuators, to specified characteristics values for the start. To reduce exhaust gas emissions at the start of the internal combustion engine, the internal combustion engine is accelerated by the E-machine, without the injection of fuel, until the engine torque that is able to be implemented by the internal combustion engine, essentially corresponds to the torque command, and the injection of fuel into the internal combustion engine is only then released.

Abstract: In a method for detecting a running internal combustion engine in a hybrid vehicle, the internal combustion engine, as a first drive unit, and a second drive unit contribute toward driving the hybrid vehicle. To determine reliably whether the internal combustion engine is running during hybrid operation, an interference signal is actively introduced into the ongoing operating sequence of the internal combustion engine, and the response of the internal combustion engine to this interference signal is evaluated. If there is no response of the internal combustion engine, it is concluded that the internal combustion engine is not operating.

Abstract: The invention deals with a method for the operation of an internal combustion engine with at least two cylinders, which can be operated with a fuel of variable quality stored in a tank and/or with fuel blends stored in the tank from a first and at least a second fuel in variable mixing ratios, and wherein variable fuel qualities and/or fuel blends of different compositions require variable air/fuel ratios for the achievement of a stable combustion and/or have a variable vaporization behavior.

Abstract: In a method for starting an internal combustion engine (60) having multiple combustion chambers (62, 64, 66, 68), wherein said internal combustion engine (60) has a starting system (50) and is operated using a start-stop function, and wherein said starting system (50) is actuated after a stop phase in operation of said internal combustion engine (60) to restart said internal combustion engine (60), a combustion chamber (62, 64, 66, 68) to be ignited first of the multiple combustion chambers (62, 64, 66, 68) is determined upon a restart of the internal combustion engine (60), and after a first ignition of the combustion chamber (62, 64, 66, 68) to be ignited first, speed data for the internal combustion engine (60) are detected, and a starter release of the starting system (50) is caused if the detected speed data meet a predetermined starter release criterion.

Abstract: The invention relates to a procedure to heat up or keep warm an exhaust gas emission control assembly of a vehicle with a drive train containing one transmission. The drive train is powered by an internal combustion engine and at least one second drive unit. It is proposed that also in an operating state, which lies outside of the idle speed, a rotational speed or a torque of the internal combustion engine deviating from values for the engine rotational speed and the torque is set, which would exist during an identical driving condition without the heating-up or keeping warm of the exhaust gas emission control assembly.

Abstract: In a method for operating a direct-injection internal combustion engine, a position of at least one piston inside a cylinder in which the combustion engine is at a standstill is determined; and a starting cylinder into which fuel is injected first is selected for a start following the standstill. An instantaneous charge of the starting cylinder is determined as a function of a duration of the standstill of the combustion engine. A distance (d) between the piston of the starting cylinder and a specified position of the piston is calculated. A minimum distance of the piston of the selected cylinder is determined as a function of the instantaneous charge; and another cylinder is selected as starting cylinder if the distance (d) between the piston of the starting cylinder and the specified position is less than the minimum distance.

Abstract: In a method for operating a direct-injection internal combustion engine, a position of at least one piston inside a cylinder in which the combustion engine is at a standstill is determined; and a starting cylinder into which fuel is injected first is selected for a start following the standstill. An instantaneous charge of the starting cylinder is determined as a function of a duration of the standstill of the combustion engine. A distance (d) between the piston of the starting cylinder and a specified position of the piston is calculated. A minimum distance of the piston of the selected cylinder is determined as a function of the instantaneous charge; and another cylinder is selected as starting cylinder if the distance (d) between the piston of the starting cylinder and the specified position is less than the minimum distance.

Abstract: A method is described for starting an internal combustion engine having an E-machine coupled to it in a motor vehicle, after the input of a certain torque command at a drive control of the internal combustion engine, the internal combustion engine being accelerated for the start by the E-machine, and the internal combustion engine being set by the drive control, via actuators, to specified characteristics values for the start. To reduce exhaust gas emissions at the start of the internal combustion engine, the internal combustion engine is accelerated by the E-machine, without the injection of fuel, until the engine torque that is able to be implemented by the internal combustion engine, essentially corresponds to the torque command, and the injection of fuel into the internal combustion engine is only then released.

Abstract: The invention deals with a method for the operation of an internal combustion engine with at least two cylinders, which can be operated with a fuel of variable quality stored in a tank and/or with fuel blends stored in the tank from a first and at least a second fuel in variable mixing ratios, and wherein variable fuel qualities and/or fuel blends of different compositions require variable air/fuel ratios for the achievement of a stable combustion and/or have a variable vaporization behavior.

Abstract: To achieve a reliable and exhaust-optimized combustion starting already from the beginning of a combustion phase in the startup of an internal combustion engine, the internal combustion engine is brought to a target speed by an electric motor in a drag phase, the target speed being higher than the previously known starting speed. The target speed corresponds approximately to an idling speed assigned to the internal combustion engine, for example. After exceeding the starting speed, first a mixture enrichment is determined, taking into account a prevailing state of a wall film here in particular. Only after reaching the target speed is the fuel metered and does the combustion take place in the combustion phase. The fuel is metered here in particular on the basis of the mixture enrichment determined after exceeding the starting speed.

Abstract: The invention concerns a procedure to heat up or keep warm an exhaust gas emission control assembly of a motor vehicle with a drive train containing one transmission. The drive train is powered by an internal combustion engine and at least one second drive unit. It is proposed that also in an operating state, which lies outside of the idle speed, a rotational speed or a torque of the internal combustion engine deviating from values for the engine rotational speed and the torque is set, which would exist during an identical driving condition without the heating-up or keeping warm of the exhaust gas emission control assembly.

Abstract: A control apparatus for protected switching of a load encompasses at least two switch units in series with a load, to permit delivery of energy to a load when each switch unit is switched on and to block it when at least one of the switch units is shut off; an electronic control system for triggering each switch unit via a first switching path and second switching paths, and for monitoring its state; a delay element on the first switching path, such that each switch unit can be shut off both by way of a shutoff signal conveyed via the first switching path and by way of a shutoff signal conveyed via the second switching path; and in a state in which one of the switch units is shut off and the other is switched on, the electronic control system ascertains a malfunction of the first switching path if, after output of a shutoff signal on the first switching path, the other switch unit does not shut off within a predefined time window.

Abstract: An internal combustion engine controller includes a main processor for monitoring operating parameters of an internal combustion engine and a triggering device, working together with the main processor, for an electric fuel pump of the internal combustion engine. The triggering device works together with an electric activation device and operates so that the fuel pump is triggered essentially without time delay after actuation of the activation device. The internal combustion engine controller has an electronic switching device which operates so that, during an initialization process of the main processor, it triggers the electric fuel pump independently of the main processor.

Abstract: The invention relates to a method and an arrangement for correcting a fuel quantity which is supplied to an internal combustion engine. The correction is carried out in dependence upon a first corrective value for a start phase of the engine and a second corrective value for a restart of the engine. In this way, a precise fuel precontrol can be carried out.

Abstract: A control apparatus for protected switching of a load encompasses at least two switch units in series with a load, to permit delivery of energy to a load when each switch unit is switched on and to block it when at least one of the switch units is shut off; an electronic control system for triggering each switch unit via a first switching path and second switching paths, and for monitoring its state; a delay element on the first switching path, such that each switch unit can be shut off both by way of a shutoff signal conveyed via the first switching path and by way of a shutoff signal conveyed via the second switching path; and in a state in which one of the switch units is shut off and the other is switched on, the electronic control system ascertains a malfunction of the first switching path if, after output of a shutoff signal on the first switching path, the other switch unit does not shut off within a predefined time window.

Abstract: The aim of the invention is to reduce exhaust emission during the staring phase of a direct-injection internal combustion engine. For this purpose, at least one first injection per working cycle takes place when the internal combustion engine is cold, especially during the starting and/or warm-up phase, thereby producing a substantially homogeneous, combustible fuel/air mixture (56) in the combustion chamber (12). In the same working cycle at least one further injection is supposed to take place which produces a substantially rich fuel/air mixture (64) in the zone of the ignition device (34). The lambda value of the fuel/air mixture (64) produced by the second injection in the zone of the ignition device (34) is smaller than the lambda value of the fuel/air mixture (56) present in the remaining combustion chamber.

Abstract: The aim of the invention is to reduce exhaust emission during the staring phase of a direct-injection internal combustion engine. For this purpose, at least one first injection per working cycle takes place when the internal combustion engine is cold, especially during the starting and/or warm-up phase, thereby producing a substantially homogeneous, combustible fuel/air mixture (56) in the combustion chamber (12). In the same working cycle at least one further injection is supposed to take place which produces a substantially rich fuel/air mixture (64) in the zone of the ignition device (34). The lambda value of the fuel/air mixture (64) produced by the second injection in the zone of the ignition device (34) is smaller than the lambda value of the fuel/air mixture (56) present in the remaining combustion chamber.

Abstract: An internal combustion engine controller (120) includes a main processor (200) for monitoring operating parameters of an internal combustion engine (100) and a triggering device (170), working together with the main processor (200), for an electric fuel pump (110) of the internal combustion engine (100). The triggering device (170) works together with an electric activation device (205) and is designed in such a way that the fuel pump (110) is triggered essentially without time delay after actuation of the activation device (205). The internal combustion engine controller (120) has an electronic switching device which is designed so that, during an initialization process of the main processor (200), it triggers the electric fuel pump (110) independently of the main processor (200).