System for sampling specific pollutants in diluted thermal machine exhaust gases

摘要

the present invention is directed to a system for the collection of specific pollutants contained in diluted exhaust gases from combustion engines, comprising a first thermal module (1) for the emissions of aldehydes and ketones, and a second module (2) for the removal of hydrocarbon emissions.;the system according to the invention includes a means to coordinate the phases of the sampling operation of the predetermined heat engine.;more specifically, the first module (1) includes a circuit (3) for trapping of aldehydes and ketones contained in the diluted exhaust gas, and a sampling circuit (4) for the dilution air.