Method for the quality assurance of exhaust gas behavior in a motor vehicle

An apparatus for quality assurance for an exhaust gas behavior in a motor vehicle, the apparatus comprising:

• an onboard diagnosis apparatus, having an onboard diagnosis function, for an onboard diagnosis of a functional capability of an exhaust gas relevant apparatus of the motor vehicle;
• a monitoring apparatus, for monitoring the onboard diagnosis function of the onboard diagnosis apparatus of the motor vehicle;
• a trip computer apparatus for providing a trip counter, the trip counter being indicative of a number of driving cycles of the motor vehicle, wherein the trip computer apparatus is set up to allow incrementing of the trip counter;
• a diagnosis computer apparatus for providing a diagnosis counter for that onboard diagnosis function of the motor vehicle, that is affected by the monitoring, wherein the diagnosis counter apparatus is set up to allow incrementing of the diagnosis counter (130) of the onboard diagnosis function;
• a diagnosis frequency set point value apparatus for providing a diagnosis frequency setpoint value;
• a diagnosis frequency actual value apparatus for forming a diagnosis frequency actual value, by use of a suitable combination of the diagnosis counter with the trip counter;
• a comparison apparatus, for comparing the diagnosis frequency actual value with the diagnosis frequency setpoint value;
• a selection apparatus, for selecting a control method from a control method group, each control method of the control method group being indicative of an applicable motor actuation of a drive motor of the motor vehicle, and the selected control method being suitable for completing a currently running onboard diagnosis of the onboard diagnosis function successfully and initiating and completing a non-running onboard diagnosis of the onboard diagnosis function successfully;
• and
• a resetting apparatus for resetting the motor actuation to an original motor actuation, according to a state before the selection of the control method.

A computer program product comprising a non-transitory computer readable medium having stored thereon program code that, when executed by a processor, carries out the acts of:

• monitoring an onboard diagnosis function of the motor vehicle, the onboard diagnosis function being relevant to the exhaust gas behavior of the motor vehicle;
• providing a trip counter, the trip counter being indicative of a number of trips by the motor vehicle;
• providing a diagnosis counter for that onboard diagnosis function of the motor vehicle that is affected by the monitoring;
• providing a diagnosis frequency setpoint value;
• incrementing the trip counter after beginning a driving cycle of the motor vehicle and a predetermined driving time of the motor vehicle;
• forming a diagnosis frequency actual value, by use of a suitable combination of the diagnosis counter with the trip counter;
• forming a difference between the diagnosis frequency setpoint value and the diagnosis frequency actual value;
• if the formed difference between the diagnosis frequency setpoint value and the diagnosis frequency actual value is below a difference threshold:
• selecting a control method from a control method group, each control method of the control method group being indicative of an applicable motor actuation of a drive apparatus of the motor vehicle, wherein
• the selected control method is suitable for completing a currently running onboard diagnosis of the onboard diagnosis function successfully and initiating and completing a non-running onboard diagnosis of the onboard diagnosis function successfully, and
• after completion of the onboard diagnosis of the onboard diagnosis function:
• incrementing the diagnosis counter of the onboard diagnosis function;
• and
• resetting the motor actuation to an original motor actuation, according to a state before the selection of the control method.