CPC F01N 1/166 (2013.01) [G10K 11/161 (2013.01)] | 17 Claims |
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).
|