Abstract: A method and a device for selecting a function which is implemented at a terminal of the device. The device includes a processor and a first function path over which a first function is implemented, and includes at least one other function path over which another function is implemented. The function paths run over at least two different terminals of the processor, and the at least two function paths are connected and are routed directly to the single terminal of the device. The selection of the function to be implemented is made by a predefinable code, and the at least second function is suppressed.

Abstract: Methods of securing the erasing and/or programming or reprogramming of data and/or programs in a memory of a computer, in particular a control unit in a motor vehicle, are described. In programming, either an identifier that identifies correct erasing and/or programming of memory is entered into an area of memory that is to be erased and/or programmed or it is selected from the data and/or programs already entered, in particular from a program identifier in the form of a section from it. In addition, the identifier is altered in memory before erasing and/or programming the data and/or programs, in particular by erasing and/or programming, so that the respective memory contents are not used in the event of an interruption in the programming operation and thus in the event of defective programming.

Abstract: A method and device for detecting the rotation direction of a piston engine, internal combustion engine or piston compressor. The piston engine includes at least one cylinder, a piston movable back and forth in the cylinder, a cylinder chamber formed inside the cylinder which is delimited by an inner cylinder wall and the piston, an inlet channel opening into the cylinder chamber via at least one inlet valve, an outlet channel opening into the cylinder chamber via at least one outlet valve, and at least one triggerable throttling device situated in the inlet channel. To detect the rotation direction in a reliable, timely, and simple manner, the pressure prevailing in the inlet channel is measured when a rotary motion is detected, compared with a predefinable threshold value, and the rotation direction is determined based on the comparison result, the throttling device being closed at least for the pressure measurement time.

Abstract: A method and device for detecting the rotation direction of a piston engine, internal combustion engine or piston compressor. The piston engine includes at least one cylinder, a piston movable back and forth in the cylinder, a cylinder chamber formed inside the cylinder which is delimited by an inner cylinder wall and the piston, an inlet channel opening into the cylinder chamber via at least one inlet valve, an outlet channel opening into the cylinder chamber via at least one outlet valve, and at least one triggerable throttling device situated in the inlet channel. To detect the rotation direction in a reliable, timely, and simple manner, the pressure prevailing in the inlet channel is measured when a rotary motion is detected, compared with a predefinable threshold value, and the rotation direction is determined based on the comparison result, the throttling device being closed at least for the pressure measurement time.

Abstract: A device for influencing the propulsion of a vehicle includes a first arrangement for measuring a transverse acceleleration variable describing the transverse acceleration acting upon the vehicle, a second arrangement for determining a variable describing the time behavior of the transverse accelaretion variable, a third arrangement for determining an intervention variable at least as a function of the transverse acceleration variable and of the variable describing the time behavior of the transverse acceleration variable, and a fourth arrangement for carrying out at least engine interventions for influencing the propulsion as a function of the intervention variable.

Abstract: A control system, for use in a vehicle, that influences at least one quantity representing tire slip, and which includes a control unit for controlling at least the drive unit of the vehicle. A traction controller for influencing the engine torque may be implemented in the control unit, and may be used to generate a value for a regulated quantity (or manipulated variable) for the torque of the drive unit based on at least a characteristic map that depends on the slippage and on the slip gradient.

Abstract: A control system, for use in a vehicle, that influences at least one quantity representing tire slip, and which includes a control unit for controlling at least the drive unit of the vehicle. A traction controller for influencing the engine torque may be implemented in the control unit, and may be used to generate a value for a regulated quantity (or manipulated variable) for the torque of the drive unit based on at least a characteristic map that depends on the slippage and on the slip gradient.

Abstract: A device for monitoring a transverse acceleration sensor located in a vehicle and detecting a first transverse acceleration quantity. The device includes a processing device that has at least one filtering device used to filter the first transverse acceleration quantity, yielding a filtered transverse acceleration quantity. A second transverse acceleration quantity is determined by determining device as a function of wheel speed quantities detected by a corresponding detecting device. A comparison between the filtered transverse acceleration quantity and the second transverse acceleration quantity is carried out in a monitoring device to monitor the transverse acceleration sensor.

Abstract: A device for monitoring an acceleration sensor located in a vehicle and detecting an acceleration quantity that describes an acceleration acting upon the vehicle. The device includes an averaging device that is used to generate a mean value of the acceleration quantity for a definable period of time. The mean value is largely independent of driving maneuvers performed with the vehicle. The device also includes a monitoring device in which a comparison between the mean value of the acceleration quantity and a threshold value is carried out to monitor the acceleration sensor.

Abstract: Air-permeable and water-permeable baffles in the form of a fine-meshed grill are mounted in front of the upwardly projecting side walls in a motor vehicle fresh-air intake duct in order to improve separation with an inlet grill retaining any coarse impurities and with at least one drainage aperture, located in the area of the lowest point of the fresh-air intake duct, for liquid separated out from the air current. The liquid making its way through the meshes of the grills flows, in the flow vacuum between baffle and side wall at the back of the baffle, downwards to the duct bottom and the drainage aperture.

Abstract: A method is disclosed for adjusting the amount of fuel to be supplied to an internal combustion engine in the case of non-idling operation even when the load signal fails. A plurality of emergency injection times are used which are modified with the manipulated variable of a lambda controller so that an injection time period is associated with each emergency injection time. The injection time periods are arranged such that they cover essentially all the injection times which can occur during the operation of an internal combustion engine. In the method, the lambda control remains switched on and the point at which control is to occur is found by running through the injection time periods. An arrangement for carrying out the method is also disclosed.

Abstract: The invention relates to a mixture control system which provides the possibility of interrupting fuel during overrun operation. The mixture control system includes apparatus for controllably reducing fuel metering at the start of overrun operation and/or controllably resuming the metering of fuel after the end of overrun operation with the controllable reduction and/or resumption taking place via a corresponding control via the integrator component of the mixture control in dependence upon the composition of the exhaust gas. A very advantageous system with respect to complexity and computation time is provided by the cooperative relationship between lambda control and mixture control.

Abstract: The invention is directed to a method for controlling the no-load speed of an internal combustion engine wherein the position of the throttle flap in the intake tube of the engine is varied as a function of the speed of the engine and of a position signal defining the position of the throttle flap. The variation of the throttle flap position takes place, however, only whenever the throttle flap has assumed a specific, predeterminable position and whenever the engine speed has remained virtually constant over a likewise predeterminable period of time. An embodiment in the form of a flow chart is described by means of which the method according to the invention can be realized.

Abstract: The invention relates to a method and apparatus for controlling operating characteristic quantities of an internal combustion engine. For issuing an uncorrected anticipatory control value, a characteristic field is addressed by directing pregiven operating characteristic quantities as addresses and, with a simultaneously superposed control, an averaged value of the control factor is applied to the anticipatory control region for effecting an adaptive learning procedure. From the averaged control factor, a global factor is defined which works multiplicatively on the entire basic characteristic field. This considers especially multiplicative disturbance influences.

Abstract: In a fuel injection system with an acceleration enrichment and a deceleration leaning, in which the transition compensation is determined by means of the throttle valve change speed in connection with the throttle valve change path. By means of the measurement of the throttle valve position the cause for the change of the air quantity is determined so that the information concerning a change of the operating state is present more quickly and a fuel leaning or fuel enrichment can accordingly also be effected more quickly. An intermediate injection threshold, which activates an intermediate injection calculation when exceeded, is built in, in addition, for the acceleration enrichment.

Abstract: A starting control for fuel injection systems of internal combustion engines is suggested in which an injection time (te.sub.VER), which is dependent on the engine starting temperature (T.sub.MS), is determined in the starting phase. In the starting phase, this injection time (te.sub.VER) follows the curve of special starting characteristic lines. A continuous transition to performance characteristics injection time (te.sub.KF) is effected by means of a comparator. A smooth transition from the starting phase to normal operation is obtained in this way.

Abstract: An arrangement for detecting data in motor vehicles is disclosed especially in combination with the open or closed loop control of internal combustion engines. The arrangement includes at least one potentiometer as a data detector which permits, in at least one boundary region of the potentiometer band, the boundary values to be made to follow the measured value. Thus, a self-adjusting measuring arrangement is obtained which largely eliminates the need for manual fine adjustment. A flowchart discloses a computer-controlled realization of the invention.

Abstract: A method is disclosed for detecting an extreme value position of a movable part by means of a position detecting sensor. The method is especially suitable for detecting the idle position of the throttle flap of an internal combustion engine with the aid of a potentiometer. In this method, a stored value (extreme value) corresponding to the extreme position is corrected upon the detection of deviating measured values, provided that the deviating measured values lie within a correction range around the extreme value. The range of movement of the movable part has to lie within the range coverable by the position sensor. After a predetermined number of identical measured values are sensed in the correction range during an operating cycle, such a measured value is stored in memory as the new extreme value. For dynamic adaptation, this next extreme value is modified cyclically, preferably prior to each operating cycle, by a predetermined value away from the outermost position.

Abstract: In a method and apparatus for controlling tank venting in internal combustion engines, a regenerative flow of fuel is released from the activated charcoal container to the negative-pressure side of the intake tube of the engine and an adaptation in the computer area for the fuel metering quantity simultaneously is prohibited, or vice versa, an adaptation is authorized and a regenerative fuel flow is prohibited, by cyclical triggering, as a function of whether the throttle flap angle drops below, or exceeds, a predetermined threshold value. Parallel to this, a continuous activated charcoal filter regeneration is provided that comes into play at relatively large air throughputs, by means of a branch line leading into the air filter area upstream of the throttle flap; furthermore, if the throttle flap angle threshold value is exceeded, both the regenerative fuel flow via the tank venting valve and the adaptation in the computer area are authorized.

Abstract: The invention is directed to an apparatus and a method for controlling the operating characteristic quantities of an internal combustion engine, with a characteristic set up with operating quantities of the internal combustion engine for pre-control of engine variables influencing the operating characteristic quantities, and with a control arrangement, responsive to at least one engine variable, for correctively influencing the characteristic values. The values stored in the characteristic field and selected in dependence on operating characteristic quantities of the internal combustion engine are modified via the control arrangement to correctively influence the characteristic values. In addition, the characteristic values lying within the defined region of the characteristic value modified are also changed in dependence on the modification of this particular characteristic value.