Abstract: A control unit having a plurality of error shutdown interfaces by which, upon activation, in each case one or more components to be controlled by the control unit is/are able to be switched off. The control unit is set up to run one or more different applications, each of which is equipped to trigger an error shutdown if necessary, the control unit additionally being set up to provide internal interfaces for the one or more applications. The internal interfaces and the error shutdown interfaces are predefinably assignable to each other, so that in response to an invocation of one of the internal interfaces, the one or more error shutdown interfaces assigned to it is/are activated. A method for operation of the control unit is also described.

Abstract: A control unit having a plurality of error shutdown interfaces by which, upon activation, in each case one or more components to be controlled by the control unit is/are able to be switched off. The control unit is set up to run one or more different applications, each of which is equipped to trigger an error shutdown if necessary, the control unit additionally being set up to provide internal interfaces for the one or more applications. The internal interfaces and the error shutdown interfaces are predefinably assignable to each other, so that in response to an invocation of one of the internal interfaces, the one or more error shutdown interfaces assigned to it is/are activated. A method for operation of the control unit is also described.

Abstract: A method for diagnosing the dynamic characteristics of a lambda sensor, which is used at least intermittently for a cylinder-individual lambda closed-loop control, which provides for at least one actuating variable of the lambda closed-loop control to be detected and compared to a specifiable maximum threshold, and, if the maximum threshold is exceeded, the dynamic response of the lambda sensor is deemed insufficient with respect to the usability for the cylinder-individual lambda closed-loop control.

Abstract: A circuit configuration for operating a gas sensor is described, including a reference gas space in which an electrode is situated which is supplied with a reference gas pump current to maintain the concentration of the reference gas. A diagnostic system determines a concentration change of the reference gas via a change in the reference pump current and a time-based evaluation of the sensor signal of the gas sensor.

Abstract: A method for diagnosing the dynamic characteristics of a lambda sensor, which is used at least intermittently for a cylinder-individual lambda closed-loop control, which provides for at least one actuating variable of the lambda closed-loop control to be detected and compared to a specifiable maximum threshold, and, if the maximum threshold is exceeded, the dynamic response of the lambda sensor is deemed insufficient with respect to the usability for the cylinder-individual lambda closed-loop control.

Abstract: A circuit configuration for operating a gas sensor is described, including a reference gas space in which an electrode is situated which is supplied with a reference gas pump current to maintain the concentration of the reference gas. A diagnostic system determines a concentration change of the reference gas via a change in the reference pump current and a time-based evaluation of the sensor signal of the gas sensor.

Abstract: A method for cylinder-specific adjustment of the injection quantity in internal combustion engines is provided, as well as an internal combustion engine with which the method may be implemented. The injection quantity per cylinder selected by the engine management is changed in a controlled manner following an orthogonal experimental plan. The effect of this change on the excess-air factor “lambda” is analyzed, allowing the formulation of a regression polynomial to determine necessary corrections of the injection quantity, which injection quantity is adjustable individually for each cylinder with a view to optimum combustion.

Abstract: A sensor for determining the concentration of a gas component in a gas mixture is provided, including at least one pump cell having an outer pump electrode which is exposed to the gas mixture and an inner pump electrode located in a measuring chamber, and further including a Nernst cell having a Nernst electrode located in the measuring chamber and a reference electrode located in a reference gas channel. The pump cell and the Nernst are formed in a composite structure of stacked solid electrolyte layers, which structure has an upper layer containing the pump electrodes, a middle layer containing the measuring chamber and the reference gas channel, as well as a lower layer containing a heating element and two supply leads. To suppress noise in the output signal of the sensor, the leads of the Nernst cell are disposed in one plane, in parallel side-by-side relationship, and symmetrically to at least one of the two supply leads of the heating element.

Abstract: A method is presented for determining the fuel/air ratio in the individual cylinders (single cylinder lambda) of an internal combustion engine having a plurality of cylinders, whose exhaust gases mix together in a common exhaust gas pipe system, from the signal of an exhaust gas probe, whose mounting location lies in the common exhaust gas pipe system, with the aid of an invertible model for the intermixing of the exhaust gases at the mounting location of the exhaust gas probe. The method is distinguished in that, in the determination of the single cylinder lambda from the signal of the one exhaust gas probe evaluated with the aid of the inverted model, the rotational angle position of the exhaust gas probe at its mounting position is taken into consideration.

Abstract: A method for cylinder-specific adjustment of the injection quantity in internal combustion engines is provided, as well as an internal combustion engine with which the method may be implemented. The injection quantity per cylinder selected by the engine management is changed in a controlled manner following an orthogonal experimental plan. The effect of this change on the excess-air factor “lambda” is analyzed, allowing the formulation of a regression polynomial to determine necessary corrections of the injection quantity, which injection quantity is adjustable individually for each cylinder with a view to optimum combustion.

Abstract: A method is presented for determining the fuel/air ratio in the individual cylinders (single cylinder lambda) of an internal combustion engine having a plurality of cylinders, whose exhaust gases mix together in a common exhaust gas pipe system, from the signal of an exhaust gas probe, whose mounting location lies in the common exhaust gas pipe system, with the aid of an invertible model for the intermixing of the exhaust gases at the mounting location of the exhaust gas probe. The method is distinguished in that, in the determination of the single cylinder lambda from the signal of the one exhaust gas probe evaluated with the aid of the inverted model, the rotational angle position of the exhaust gas probe at its mounting position is taken into consideration.