Patent ID: 8191861

Claim:
A control valve for controlling a gas flow direction in a gas line of an internal combustion engine, comprising: a flap which is rotationally adjustable about a rotational axis which runs transverse to the flow direction, for controlling of a flow cross section, wherein the flap includes a closed position; a sealing face facing the flap; a sealing contour of the flap; an adjustable throttling sealing gap is configured radially between the sealing contour and the sealing face when the flap is in the closed position, wherein the adjustable throttling sealing gap is adjustable with respect to at least one of a gap length and a gap width; a drive shaft which extends coaxial to the rotational axis and on which the flap is arranged in a rotationally fixed manner, a line piece that is provided for installation in the gas line axially between line ends of the gas line opposing one another, wherein the line piece includes the flow cross section; at least two bearings arranged on both sides of the line piece; and two bearing shells that are arranged, with respect to the flow cross section, outside of the line piece on diametrically opposing sides, and wherein each of the bearing shells includes at least one of the at least two bearings; wherein at least one of the two bearings is adjustable relative to the bearing shell and the two bearing shells are adjustable relative to the line piece, thereby providing adjustability for the adjustable throttle sealing gap, wherein the flap controls the flow cross section of the line piece, and the sealing face is configured at the line piece, and wherein the drive shaft penetrates the line piece and is supported rotationally adjustably in the at least two bearings.