Peng-Yang Li

Degradation of Exhaust Valves in Medium-Speed Marine Diesel Engines: An Evidence-Tiered Review of Materials, Surface Engineering, and Qualification

Exhaust valves in medium-speed marine diesel engines experience coupled combustion heating, intermittent seat cooling, repeated impact and microslip, deposit-assisted corrosion, and prolonged service. Their degradation therefore cannot be explained or qualified using a single room-temperature property. This review orga...