Method for anti-pollution treatment of exhaust gas from drive train of motor vehicle, involves deducing correction of aeraulic curve of exhaust gas recirculation valve based on difference between measured and estimated operating quantities

摘要

The method involves measuring an operating quantity of a drive train of a motor vehicle, and estimating the same operating quantity by a logic controller. The correction of an aeraulic curve of an exhaust gas recirculation valve (22) is deduced based on the difference between the measured and estimated operating quantities. The quantity is selected from a pressure at the level of a manifold, a rate within a drive drain or richness of mixture introduced in a combustion chamber. An independent claim is also included for a drive train for a motor vehicle, comprising a fresh air intake valve.