The author traces the design sequence and operational experience in the evolution of the General Electric 9 inch (228 mm) x 10.5 inch (266 mm), four stroke, vee form locomotive engine from 200 psi (14.1 Kg/cm2) BMEP to 282 psi (19.9 Kg/cm2) BMEP. Mechanical modifications required to improve reliability and to permit uprating are described and loading levels charted. Limitations encountered due to thermal loading and corrective measures taken are described. Component operating conditions are shown for original and later designs. The original 7FAL engine design had many features which could be improved to obtain increased service life and lower maintenance. Some examples of these were: rigid air inlet manifolds which were difficult to align with cylinders and were subject to fatigue cracking in operation; fuel rack operating linkages which were adjustable at many points which led to loss of adjustment or misadjustment; rigid water inlet and discharge manifolds which would eventually break and leak due to vibratory stresses; bolted cylinder head covers of such configuration that oil leaks were troublesome and access to the fuel injection equipment difficult; etc. Corrections of those problems by design changes to provide flexibility in the water and air manifolds, non-adjustable fuel rack systems and improved, quick-access covers produced the 7FBL design.


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    Title :

    Evolution of the General Electric 7FDL locomotive diesel engine


    Additional title:

    Weiterentwicklung des Lokomotiv-Dieselmotors 7FDL von General Electric


    Contributors:


    Publication date :

    1971


    Size :

    42 Seiten, 32 Bilder, 1 Tabelle


    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English




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