Load testing of valves for inlet and outlet valves of internal combustion engine; involves cyclic bending load on stem and cyclic pressure threshold loading on valve stem pressing valve head on valve seat

摘要

The method involves applying a cyclic revolving bending load to the valve stem (1), which corresponds to a multiple of the bending loads of the valve stem that occur under normal conditions by the valve head rotation. A cyclic pressure threshold loading is applied to the valve head (3), which presses the valve head on the valve seat (4) and corresponds to a multiple of the fluid pressure acting on the valve head under normal conditions. An Independent claim is included for a device for implementing the method.