Patent ID: 10415625

Abstract:
A fastening device, fixing an exhaust manifold (12) on a cylinder head (14) of an internal combustion engine, has a contact surface (20) supported relative to a cylinder head contact surface (22). A fastening edge area (16) has a wedge fastening flange area (24) with a fastening element support surface (26) inclined in relation to the contact surface (20) that has a wedge angle (W1). A fastening element (38) is pressed against the fastening element support surface (26) with a fastening flange support surface (40) with a fastening bolt unit (30) supported in relation to the cylinder head (14). The wedge angle (W1) and a coefficient of static friction (μ) of the frictional interaction of the fastening element (38) in relation to the exhaust manifold (12) is defined by: 0<W1<2 tan−1 (μ), in which W1 is the wedge angle, and μ if the coefficient of static friction.