Patent ID: 8307634

Claim:
An exhaust arrangement for an exhaust line having an exhaust gas treatment device and a liquid injection device located upstream of the exhaust gas treatment device comprising: a single moving element incorporating a throttling member having a closing surface and, operatively connected to the throttling member, a turbulence generating member and an actuator for controlling a position of the moving element between a first position wherein the moving element is in a retracted position and creates a minimum backpressure in the exhaust line and a second position wherein the moving element is in an extended position and creates a maximum back pressure, or selectively in at least one intermediate position wherein the moving element is in a turbulence generating position wherein the turbulence generating member intrudes at least partially into the exhaust line and creates turbulences within a flow of exhaust gases through the exhaust line, wherein the turbulence generating member extends from the throttling member and is provided with a plurality of openings through which the exhaust gases flow.