LNT CONTROL WITH ADAPTIVE CRUISE CONTROL

摘要

A method is provided for controlling a NOx storage catalytic converter that is disposed in the exhaust system of an internal combustion engine of a motor vehicle with an adaptive cruise control system, wherein regeneration of the NOx storage catalytic converter is started depending on the distance to a vehicle ahead. For this the motor vehicle is accelerated in a rich mode for regeneration if the distance to the vehicle ahead is large enough so that the regeneration will be completed during an acceleration phase in which the distance is reduced.

主权项

1. A method for the control of a NOx storage catalytic converter that is disposed in the exhaust system of an internal combustion engine of a motor vehicle with an adaptive cruise control system, comprising:
responsive to a first condition:
detecting a first speed of the motor vehicle;activating the adaptive cruise control system and setting the adaptive cruise control system to a second speed and detecting a distance to a preceding vehicle;increasing the distance to the preceding vehicle if the distance is less than a target distance;starting an acceleration phase while simultaneously starting regeneration of the NOx storage catalytic converter if the distance to the preceding vehicle is greater than the target distance and the first speed of the vehicle is less than the second speed; andmaintaining the acceleration phase until a target speed is reached, a gradient of the acceleration of the motor vehicle controlled such that the regeneration of the NOx storage catalytic converter is completed in the acceleration phase.