In this study failure analysis of a mini van diesel engine intake valve is analyzed in detail. Failure occurred at the groove of the valve. First mechanical and chemical properties of the valve are determined. After visual investigation of the fracture surface it is concluded that fracture occurred due to fatigue. Damaged valve, valve seat, cylinder block and piston surface is investigated and construed. Failure constituted 300 kilometers after the rectification of the engine. Therefore rectification and assembly steps of valve and engine parts are analyzed in detail. Considering assembly, design and working conditions of the engine, stresses occurring at the failure surface are calculated. Endurance limit and fatigue safety factor is determined. Because of high fatigue safety factor, reasons for failure are investigated and effects causing stress increase at groove of the valve are established. These effects are faulty assembly of the valve and valve seat causing a high impact effect. In conclusion effect of impact ratio on stress increase is explained.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Failure analysis of diesel engine intake valve


    Weitere Titelangaben:

    Fehleranalyse an Einlassventilen von Dieselmotoren


    Beteiligte:
    Göksenli, Ali (Autor:in) / Eryürek, Barias (Autor:in)


    Erscheinungsdatum :

    2008


    Format / Umfang :

    4 Seiten, 7 Bilder, 1 Tabelle, 4 Quellen




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Modeling of Variable Intake Valve Timing in Camless Turbocharged Diesel Engine

    Ghazimirsaied, S. A. | British Library Conference Proceedings | 2006




    Numerical Investigation of the Intake Flow of a Four-Valve Diesel Engine

    Sun, Kai / Jia, Mengqiu / Wen, Ming et al. | SAE Technical Papers | 2017


    Intake and in-cylinder flowfield modelling of a four-valve diesel engine

    Micklow, G J / Gong, W-D | SAGE Publications | 2007