US 11,988,124 B2
Exhaust system for an internal combustion engine
Marco Ballatore, Modena (IT); Matteo Ausili, Modena (IT); Simone Galuzzi, Modena (IT); and Emanuele Magliano, Modena (IT)
Assigned to FERRARI S.p.A., Modena (IT)
Filed by FERRARI S.p.A., Modena (IT)
Filed on Nov. 10, 2021, as Appl. No. 17/523,134.
Claims priority of application No. 102020000032843 (IT), filed on Dec. 30, 2020.
Prior Publication US 2022/0205376 A1, Jun. 30, 2022
Int. Cl. F01N 1/16 (2006.01); G10K 11/16 (2006.01)
CPC F01N 1/166 (2013.01) [G10K 11/161 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An exhaust system (6) for an internal combustion engine (4); the exhaust system (6) comprises:
an end chamber (9) having a first inlet opening (19) and a second inlet opening (26), which are separate from and independent of one another, and an outlet opening (10), through which exhaust gases are released into the atmosphere;
an exhaust duct (7), which originates from the internal combustion engine (4) and leads to the first inlet opening (19) of the end chamber (9);
a silencer device (11), which has an outlet opening (17), which directly leads to the second inlet opening (26) of the end chamber (9);
a bypass duct (12), which originates from the exhaust duct (7) in the area of a bifurcation (13) and ends in an inlet opening (16) of the silencer device (11); and
an adjustment valve (14), which can be electronically controlled, is arranged along the exhaust duct (7) downstream of the bifurcation (13) where the bypass duct (12) originates and is designed to adjust the exhaust gas flow towards the first inlet opening (19) of the end chamber (9);
wherein the end chamber (9) has at least one movable partition (23), which can be moved to different positions so as to change the width and/or the shape of the outlet opening (10);
wherein it is provided a motor-driven actuator device (24), which is configured to actively move the movable partition (23) and can be electronically controlled; and
wherein it is provided a control unit (27), which is configured to change, by controlling the actuator device (24), the position of the movable partition (23) and to change a position of the adjustment valve (14);
wherein the end chamber (9) comprises at least one fixed wall (20) having the second inlet opening (26), through which the silencer device (11) leads; and
wherein the movable partition (23) is hinged to the end chamber (9) in the area of a first fixed wall (20) so as to rotate around a rotation axis (25).