Patent ID: 7805933

Claim:
A throttle arrangement for an exhaust system of an internal combustion engine, said throttle arrangement comprising: a throttle valve for throttling a stream of exhaust gas flowing through a pipe; and a restoring spring which prestresses said throttle valve into a closed position; wherein said throttle valve in the pipe can be pivoted about a pivot axis between the closed position, in which it at least partially closes a predetermined cross-sectional area of the pipe, and an open position, in which it releases the cross-sectional area due to the pressure of the exhaust gas against the spring force of said restoring spring, wherein said restoring spring is supported on said throttle valve on the valve end or on a lever fixedly connected to the throttle valve and on the pipe end is supported on the pipe or on a bearing for accommodating a shaft extending coaxially with the pivot axis, wherein said restoring spring is adapted for supporting the spring forces on the pipe end essentially symmetrically with regard to a plane of symmetry running perpendicular to the pivot axis in the area of the support on the valve end and extending perpendicular to the pivot axis, and wherein the lever penetrates through the pipe in at least one side opening and is attached to the shaft in a rotationally fixed manner, whereby the shaft is mounted on the bearing to rotate about the pivot axis outside of the pipe.