Flap device and intake system

A valve device for an intake system of an internal combustion engine, comprising:

• a housing having one inlet duct per cylinder of the internal combustion engine,
• a flap arrangement having a flap for each inlet duct for varying the cross-section of the respective inlet duct through which a flow can pass,
• wherein:
• the flap arrangement has for all flaps a common actuating shaft for the common pivoting of the flaps about a flap pivot axis,
• the actuating shaft carries a magnet carrier in a torque-proof manner, which in turn carries a permanent magnet which cooperates with a rotation angle sensor for detection of the rotation position of the flap arrangement,
• the housing has a wall aperture between the permanent magnet and the rotation angle sensor such that no sealing separation exists between the permanent magnet and the rotation angle sensor.

A valve device for an intake system of an internal combustion engine comprising:

• a housing including one inlet duct per cylinder of the internal combustion engine, said housing defining a receiving space;
• a flap arrangement, which for each inlet duct has a flap for varying the cross-section of the respective inlet duct through which a flow can pass, said flap arrangement including a common actuating shaft for the common pivoting of the flaps about a flap pivot axis;
• a permanent magnet mounted to rotate in cooperation with at least one end of said common actuating shaft;
• and
• a rotational angle sensor positioned within said receiving space, said rotational angle sensor cooperating with said permanent magnet for detection of the rotation position of the flap arrangement;
• wherein a wall aperture is formed within said housing between said permanent magnet and said rotational angle sensor such that the magnetic field of the permanent magnet is transferred directly to the rotational angle sensor.