Abstract: A method and a device for controlling an internal combustion engine of a vehicle, in which a performance quantity of the internal combustion engine or of the vehicle is limited to a predefined limit value. For the limiting, a control of the air supply to the internal combustion engine is permitted first, while a control of the ignition angle is permitted subsequently.

Abstract: A method and an arrangement as well as a computer program for controlling an internal combustion engine are suggested. A torque model is utilized in the context of the computation of actual quantities and/or actuating quantities. In the context-of the torque model computation, the combustion center is considered which describes the angle at which a specific portion of the combustion energy is converted.

Abstract: A method, a device and a computer program for controlling an internal combustion engine, in which a torque model is used within the framework of calculating instantaneous variables and/or actuating variables. In doing so, a basic value ascertained under standard conditions is corrected as a function of the inert-gas rate and/or the valve-overlap angle. Moreover, to further improve the accuracy of the model, the efficiency for the conversion of the chemical energy into mechanical energy by which the optimum torque value is corrected, is determined as a function of the deviation between optimum ignition angle and an instantaneous ignition angle as well as an additional variable representing the combustion performance of the mixture. The latter is the optimum ignition angle.

Abstract: A method detects mass flows to the intake manifold of an internal combustion engine having a device for controlling the air supply to the intake manifold and having a sensor for detecting the intake manifold pressure and having a control apparatus for evaluating a trace of the intake manifold pressure. In the context of the method, when the internal combustion engine is switched off, the supply of air to the intake manifold is reduced in a predetermined manner and the trace of the intake manifold pressure, which adjusts thereupon, is evaluated for detecting the mass flows.

Abstract: A method is introduced for testing the operability of a tank vent valve between an internal combustion engine and a fuel vapor reservoir, in which the stored fuel vapor is supplied from the fuel vapor storage to the internal combustion engine when the tank vent valve is open, and in which the fuel vapor supply represents a first energy flow to the internal combustion engine, and in which air also flows to the internal combustion engine via a throttle valve, and, in which a second energy flow is assigned to this air, and in which an arrangement is provided which holds the sum of the two energy flows at a predefined value, and in which the tank vent valve is controlled in an opening manner, and in which a change in the energy flow delta E through the throttle valve, resulting from the opening control, is determined, and is compared to a predetermined threshold, and in which and a small change in the energy flow, which does not exceed the threshold value (threshold), is evaluated as a fault.

Abstract: A method for checking the operativeness of a tank-ventilation valve of a tank-ventilation system of a motor vehicle is characterized by the following steps: the tank-ventilation valve is triggered in a stepped manner in a preselectable working point; the intake-manifold pressure (pintake manifold) is measured and modeled in the process; the measured intake-manifold pressure (pintake manifold) is compared to the modeled intake-manifold pressure and an operative tank-ventilation valve assumed if a correlation within preselected limits is given; otherwise, a defective tank-ventilation valve is assumed.

Abstract: A method and an arrangement for controlling the drive unit of a vehicle make possible the jolt-free enablement of a rapid actuating path (5) for the conversion of a desired value for an output quantity of the drive unit. The desired value for the output quantity of the drive unit is pregiven. Depending upon the operating state of the drive unit, an actual value for the output quantity is caused to track the desired value via a slow actuating path (1) or the rapid actuating path (5). With a transition from the slow actuating path (1) to the rapid actuating path (5), the desired value, starting from the wanted value, is first set equal to the actual value and thereafter is limited in its change and is again brought back to the wanted value.

Abstract: A method and a device for controlling an internal combustion engine of a vehicle, in which a performance quantity of the internal combustion engine or of the vehicle is limited to a predefined limit value. For the limiting, a control of the air supply to the internal combustion engine is permitted first, while a control of the ignition angle is permitted subsequently.

Abstract: A method of operating an internal combustion engine of a motor vehicle has the steps of injecting fuel into a combustion chamber in at least two operating types; flowing an air/fuel mixture through a tank ventilation valve and supplying the air/fuel mixture to the combustion chamber; generating an output signal by an integrator, which represents a specific desired fuel rate (fkastes) of the air/fuel mixture flowing through the tank ventilation valve, which is used to take into account respectively a current lambda on the engine; determining a desired fuel proportion (fkates) of the air/fuel mixture flowing through the tank ventilation valve, which represents the desired fuel proportion that should be supplied through the tank ventilation valve; comparing the specific desired fuel rate (fkastes) to the desired fuel proportion (fkates); conveying a comparison result back to the integrator; thereby regulating the specific desired fuel rate (fkastes) to the desired fuel proportion (fkates) of the air/fuel mixture

Abstract: A method for determining the fuel content of a regeneration gas during regeneration of an intermediate fuel vapor storage unit in internal combustion engines with gasoline direct injection in lean (stratified) mode. Stored fuel vapor is supplied to the engine as regeneration gas via a controllable tank venting valve. The signal of an exhaust gas analyzer probe in the exhaust gas is considered for determining the fuel content of the regeneration gas. An adjustment between the analyzer probe signal and a preselected setpoint occurs while the tank venting valve is closed. The analyzer probe signal is combined with a correction quantity while the tank venting valve is closed, so that the combination corresponds to the setpoint. The analyzer probe signal is combined in the same manner with the previously obtained correction valve while the tank venting value is open. Regeneration gas charge is determined from this combination.

Abstract: A method and an arrangement as well as a computer program for controlling an internal combustion engine are suggested. A torque model is utilized in the context of the computation of actual quantities and/or actuating quantities. In the context-of the torque model computation, the combustion center is considered which describes the angle at which a specific portion of the combustion energy is converted.

Abstract: Method for controlling a tank venting valve between an internal combustion engine and a fuel vapor storage unit, with the stored fuel vapor being supplied from the fuel vapor storage unit to the internal combustion engine when the tank venting valve is open. A distinction is made between active and inactive tank venting phases, and the purge rate is preset during active tank venting by a purge rate setting means as a function of operating parameters of the engine and/or the tank venting system. If the duration of the inactive tank venting phase exceeds a minimum duration, the purge rate in the subsequent active tank venting phase is temporarily limited to a value below the rate preset by the purge rate setting means.

Abstract: A method and an electronic control device for diagnosing the mixture formation in internal combustion engines including tank ventilation. The diagnosis is linked to the mixture adaptation and is performed only with active lambda control and, therefore, especially not in operating modes of the internal combustion engine in which lambda is merely controlled. In the method, outside of active lambda control, an indication of a mixture or probe fault is recognized in that, given active tank ventilation and non-active mixture adaptation, a fault suspicion is formed when a measurement for the influence of the tank ventilation on the mixture composition, the measurement is formed assuming an intact system, takes on implausible values. If this suspicion exists, the mixture adaptation is requested to verify the suspicion, if appropriate.

Abstract: A method for compensating for faulty adaptations of the pilot control of fuel metering for an internal combustion engine which is operated in the at least two different operating modes, homogeneous mode and stratified charge mode. The method includes mixture regulation and adaptation of mixture regulation occurring in homogeneous mode; switching occurring between the operating modes, depending on a desired operating mode which is determined from a plurality of operating mode requirements. Furthermore, each of the operating mode requirements are assigned a priority; and the desired operating mode is determined depending on the priorities of the operating mode requirements. Also, switching to homogeneous mode with the activation of the adaptation momentarily occurs, even outside the normal starting conditions of the adaptation.

Abstract: A method is introduced for testing the operability of a tank vent valve between an internal combustion engine and a fuel vapor reservoir, in which the stored fuel vapor is supplied from the fuel vapor storage to the internal combustion engine when the tank vent valve is open, and in which the fuel vapor supply represents a first energy flow to the internal combustion engine, and in which air also flows to the internal combustion engine via a throttle valve, and in which a second energy flow is assigned to this air, and in which means are provided which hold the sum of the two energy flows at a predefined value, and in which the tank vent valve is controlled in an opening manner, and in which a change in the energy flow delta E through the throttle valve, resulting from the opening control, is determined, and is compared to a predetermined threshold, and in which and a small change in the energy flow, which does not exceed the threshold value (threshold), is evaluated as a fault.

Abstract: A method for compensating for faulty adaptations of the pilot control of fuel metering for an internal combustion engine which is operated in the at least two different operating modes, homogeneous mode and stratified charge mode, is described with mixture regulation and adaptation of mixture regulation taking place in homogeneous mode, and switching taking place between the operating modes, depending on a desired operating mode which is determined from a plurality of operating mode requirements, each of the operating mode requirements being assigned a priority, and the desired operating mode being determined depending on the priorities of the operating mode requirements, the physical priority of the adaptation being elevated in different time references, thus requiring a switch to homogeneous mode

Abstract: Method and arrangement for operating an internal combustion engine (10) which is operable in several operating modes, especially an internal combustion engine (10) having direct injection or intake manifold injection and having a control apparatus (11). The control apparatus (11), that is, its software has a plurality of functions (12) and a scheduler (13) for activating the functions (12). The executability of the functions (12) is determined in dependence upon the operating-mode dependent and operating-mode independent conditions and, with the aid of a bridging signal, the determination of the operating-mode dependent conditions can be disabled.

Abstract: A method for determining mass flows into the inlet manifold (3) of an internal combustion engine, with means (5, 6, 9), for controlling the air intake into the inlet manifold (5, 6, 9), means (4), for determining the inlet manifold pressure and means (11) for evaluating the inlet manifold pressure curve, is disclosed. Within the disclosed method, the air intake into the inlet manifold, on switching off the internal combustion engine, is reduced by a set amount and the curve for the inlet manifold pressure thus produced is evaluated for the estimation of the mass flows and a leak in the inlet manifold proven by an increased rate of pressure change.

Abstract: The invention describes an internal combustion engine (1), in particular for a motor vehicle, in which fuel can be injected into a combustion chamber (4) in at least two operation types, and in which an air/fuel mixture can flow through a tank ventilation valve (17) and can be supplied to the combustion chamber (4). A control unit (18) can be used to determine a specific desired fuel rate for the air/fuel mixture flowing through the tank ventilation valve (17).

Abstract: A method for compensating for faulty adaptations of the pilot control of fuel metering for an internal combustion engine which is operated in the at least two different operating modes, homogeneous mode and stratified charge mode, is described with mixture regulation and adaptation of mixture regulation taking place in homogeneous mode; switching taking place between the operating modes, depending on a desired operating mode which is determined from a plurality of operating mode requirements; each of the operating mode requirements being assigned a priority; the desired operating mode being determined depending on the priorities of the operating mode requirements; switching to homogeneous mode with the activation of the adaptation momentarily taking place, even outside the normal starting conditions of the adaptation, and a deviation of the adaptation quantity from its neutral value during the short-time activation being evaluated as a suspected error, with the engine control program elevating the priority of