Investigation of dynamics, strength and durability for gas-distributing mechanism valves of the forced transport diesel engines

摘要

The oscillating process investigations actuality in the exhaust valve stem of the transport diesel engine is shown. The stem eight-mass and finite element calculation models are considered. Excitation hypothesis of the parametric flexural vibrations is proposed. Design scheme of original test rig for the full-scale fatigue valves tests is presented and fatigue diagram for exhaust gas-distributing valve is given. Results of the full-scale strain measuring of values on working engine at experimental investigation of flexural vibrating processes are presented.