摘要:
A method for correcting the position of the angle marks of an incremental gear of a rotary speed sensor and/or rotary angle sensor of an internal combustion engine and to a system therefor. The method is characterized by the following steps: a) recording the angle marks using the rotary speed sensor and/or the rotary angle sensor, b) measuring the combustion chamber pressure in the respective cylinder of the internal combustion engine, c) assigning a measured pressure value to the recorded angle mark positions, d) possibly correcting the measured pressure values in a signal-conditioning device, e) storing the recorded angle mark positions with the appertaining, measured pressure values in a measured value table, f) storing of the ideal pressure values derived at the ideal angle mark positions in a reference table, g) comparing the pressure values, that were measured and possibly preprocessed in the signal-conditioning device to the ideal pressure values, h) determining deviations of the measured angle mark positions from the ideal angle mark positions, at the corresponding cylinder pressure values in an evaluation unit, and i) correcting the measured angle mark positions by the deviations determined.
摘要:
A method for calibrating at least two sensors for sensing a variable characterizing the combustion process in an internal combustion engine of a motor vehicle, operated in individual-cylinder fashion and having at least two cylinders, is provided. According to the present invention, at least one operating point of the internal combustion engine, at which an equalization of the at least two cylinders by at least one fuel quantity equalization method is performable with high accuracy, is determined. At the at least one operating point of the internal combustion engine, an equalization of the at least two cylinders is performed by the at least one fuel quantity equalization method. After the equalization of the at least two cylinders has been accomplished, at least one sensor parameter of the at least two sensors is mutually adjusted.
摘要:
A method and device for controlling an internal combustion engine in which a first variable characterizing the pressure in the combustion chamber of at least one cylinder in the internal combustion engine is detected by at least one sensor. A second variable is determined on the basis of the first variable. Features which are assigned to different partial injections are obtained by forming the difference within the second variable.
摘要:
A method is described for determining the angle-of-rotation position (φ) of a shaft of an internal combustion engine, in particular a crank angle (φ) of a crankshaft, information at least about incremental angles of rotation (Δφ) of the shaft and running times (T) for each incremental angle of rotation (Δφ) being detected on the basis of signals which indicate the rotation of the shaft and are spaced with intervals between them, and stored at least temporarily the instantaneous angle-of-rotation position (φ) being determined in the period of time between two signals by extrapolation of the angle-of-rotation position (φ) thus detected, taking into account at least one angular velocity ({overscore (ω)}) and/or change in angular velocity (Δ{overscore (ω)}) extrapolated from the stored information. In addition, a corresponding device is also described.
摘要:
A method for correcting the position of the angle marks of an incremental gear of a rotary speed sensor and/or rotary angle sensor of an internal combustion engine and to a system therefor. The method is characterized by the following steps: a) recording the angle marks using the rotary speed sensor and/or the rotary angle sensor, b) measuring the combustion chamber pressure in the respective cylinder of the internal combustion engine, c) assigning a measured pressure value to the recorded angle mark positions, d) possibly correcting the measured pressure values in a signal-conditioning device, e) storing the recorded angle mark positions with the appertaining, measured pressure values in a measured value table, f) storing of the ideal pressure values derived at the ideal angle mark positions in a reference table, g) comparing the pressure values, that were measured and possibly preprocessed in the signal-conditioning device to the ideal pressure values, h) determining deviations of the measured angle mark positions from the ideal angle mark positions, at the corresponding cylinder pressure values in an evaluation unit, and i) correcting the measured angle mark positions by the deviations determined.
摘要:
A device and a method are described for controlling an internal combustion engine, in which a control deviation and a governor are allocated to each cylinder of the internal combustion engine, each governor preselecting a cylinder-specific triggering signal on the basis of the allocated control deviation. Cylinder-specific actual values are ascertained on the basis of a signal from a sensor arranged in the exhaust train and are compared to a setpoint value. Triggering signals for the cylinder-individual control of the fuel quantity and/or air quantity are preselected on the basis of the comparison.
摘要:
A method for metering fuel into a combustion chamber of an internal combustion engine is provided, in which a fuel quantity to be metered for a combustion is metered by a preinjection and at least one additional injection, and in which, in the operation of the internal combustion engine, quantity errors of the preinjection are ascertained from the signal of at least structure-borne noise sensor. The method is distinguished in that a correction value is formed as a function of the quantity error of the preinjection, and at least one of the additional injections is corrected using the correction value. A control device is also provided that controls the method.
摘要:
A method for metering fuel into a combustion chamber of an internal combustion engine is provided, in which a fuel quantity to be metered for a combustion is metered by a preinjection and at least one additional injection, and in which, in the operation of the internal combustion engine, quantity errors of the preinjection are ascertained from the signal of at least structure-borne noise sensor. The method is distinguished in that a correction value is formed as a function of the quantity error of the preinjection, and at least one of the additional injections is corrected using the correction value. A control device is also provided that controls the method.
摘要:
A method for controlling the quantity of fuel and/or air to an internal combustion engine on a cylinder-by-cylinder basis is characterized in that a signal that is influenced by combustion or pertains to a quantity that influences the combustion and contains items of information from all cylinders, mutually offset in time, is analyzed by ascertaining vibration components in the frequency range caused by cylinder-specific differences and regulating these components separately for selected frequencies, and in that an amplitude regulator that determines the amplitude of a correction intervention measure and a phase regulator that determines the allocation of an intervention pattern with respect to the cylinders are provided for each frequency to be compensated.
摘要:
A method for operating an internal combustion engine enables an improved determination of a preferred position of a shaft of the internal combustion engine. The preferred position of the shaft is derived here on the basis of a signal characterizing a course of combustion of the internal combustion engine as a function of a phase relation determined between this signal and the preferred position of the shaft.