MOTEUR A COMBUSTION INTERNE, SURALIMENTE PAR TURBOCOMPRESSEURS A GAZ D'ECHAPPEMENT ET EQUIPE D'UNE CHAMBRE AUXILIAIRE DE COMBUSTION

L'INVENTION CONCERNE UN MOTEUR A COMBUSTION INTERNE SURALIMENTE PAR TURBOCOMPRESSEURS A GAZ D'ECHAPPEMENT.DANS LEDIT MOTEUR, EQUIPE D'UNE CHAMBRE AUXILIAIRE DE COMBUSTION 31 DONT LES GAZ D'ECHAPPEMENT SONT DIRIGES DE TEMPS A AUTRE VERS LA TURBINE 25, 26 D'UN TURBOCOMPRESSEUR A GAZ D'ECHAPPEMENT 17, 18, AFIN D'AMELIORER LE COMPORTEMENT A L'ACCELERATION DUDIT MOTEUR, L'AIR COMBURANT PERMETTANT LE FONCTIONNEMENT DE LADITE CHAMBRE 31 EST PRELEVE SUR LE COURANT D'AIR D'ALIMENTATION ENGENDRE PAR LE TURBOCOMPRESSEUR. LES COMPRESSEURS 24, 27 DES TURBOCOMPRESSEURS 17, 18, QUI REFOULENT TOUS DEUX DANS LE CONDUIT D'AIR D'ALIMENTATION COMMUN A TOUS LES CYLINDRES 11, 12 DU MOTEUR, SONT EQUIPES CHACUN, COTE ASPIRATION, D'UN CLAPET ANTI-RETOUR 39, 40.APPLICATION NOTAMMENT A L'ACCELERATION DE MOTEURS A COMBUSTION INTERNE SURALIMENTES PAR TURBOCOMPRESSEURS. An internal combustion engine supercharged by exhaust turbochargers, with the engine being provided with an auxiliary combustion chamber, the exhaust gas of which is temporarily fed to a turbine of an exhaust gas turbocharger for improving acceleration characteristics of the internal combustion engine. The combustion air for the auxiliary combustion chamber is derived from a stream of supercharging air produced by the exhaust turbocharger. At least two exhaust turbochargers are provided with compressors thereof both conveying or feeding into a supercharging air conduit, to all cylnders of the internal combustion engine. Each of the compressors are equipped on an intake side with one check valve. During an idling or partial load, the exhaust gas of the internal combustion engine is fed to only one of the two exhaust turbochargers, wherein a conveying air stream produced by this exhaust turbocharger effects an automatic closing of the check valve of the other exhaust turbocharger. For accelerating the internal combustion engine, the exhaust gas from the auxiliary combustion chamber, ignited for this purpose and operating under a full load, is fed to the other exhaust turbocharger, which is capable of fully taking over a supply of the auxiliary combustion chamber and the internal combustion engine with combustion air, wherein the conveyed air stream produced at this point by this exhaust turbocharger effects an automatic closing of the check valve in the one exhaust turbocharger. The exhaust gas stream produced by the internal combustion engine, increasing during acceleration, effects in the exhaust turbocharger fed therew