F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
F01N1/00—Silencing apparatus characterised by method of silencing
F01N1/16—Silencing apparatus characterised by method of silencing by using movable parts
F01N1/18—Silencing apparatus characterised by method of silencing by using movable parts having rotary movement
Dispositif amélioré de contrôle de la quantité d'air introduit à l'admission d'un moteur à combustion interne suralimenté et procédé utilisant un tel dispositif