Flap valve for internal-combustion engine, has flap shaft supported in housing in rotatable manner, valve flap fastened to flap shaft at two fastening points, and material recess provided at valve flap between two fastening points

摘要

The valve (2) has a valve housing (4), and a flap shaft (10) supported in the housing in a rotatable manner. A valve flap (12) is fastened to the flap shaft at two fastening points (16.1, 16.2). A material recess is provided at the valve flap between the two fastening points. The material recess is designed as a hole passing through the valve flap. The material recess is designed as a cavity formed at the valve flap. The flap shaft exhibits a contact surface (14b), at which the valve flap lies, and the material recess is covered by the contact surface.